Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

15 files changed, 11857 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/lto/ChangeLog b/gcc-4.9/gcc/lto/ChangeLog
new file mode 100644
index 000000000..ad806db7d
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+++ b/gcc-4.9/gcc/lto/ChangeLog
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+2014-03-19  Richard Biener  <rguenther@suse.de>
+
+	PR middle-end/60553
+	* lto-tree.h (lang_tree_node): For types use TYPE_NEXT_VARIANT 
+	instead of TREE_CHAIN as chain_next.
+
+2014-03-19  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (lto_wpa_write_files): Move call to
+	lto_promote_cross_file_statics ...
+	(do_whole_program_analysis): ... here, into the partitioning
+	block.  Do not ggc_collect after lto_wpa_write_files but
+	for a last time before it.
+
+2014-03-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/60571
+	* lto.c (wait_for_child): Define WCONTINUED if not defined to 0.
+	Fix formatting.
+
+2014-03-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR sanitizer/60535
+	* lto-lang.c (lto_init): Add NAME_TYPE for int128_integer_type_node
+	and complex_{float,{,long_}double}_type_node.
+
+2014-03-08  Paulo Matos  <paulo@matos-sorge.com>
+
+	* lto-lang.c (lto_init): Pass flag_short_double to
+	build_common_tree_nodes.
+
+2014-02-14  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR lto/60295
+	* lto.c (stream_out): Avoid parallel streaming with
+	-flto=jobserver until we are able to throttle it down
+	resonably.
+
+2014-02-14  Jan Hubicka  <hubicka@ucw.cz>
+
+	* lto-partition.c (add_symbol_to_partition_1,
+	undo_partition, lto_balanced_map): Aliases have no
+	defined size.
+	(lto_balanced_map): Do not follow refering variables
+	if they can be optimized out.
+
+2014-02-14  Richard Biener  <rguenther@suse.de>
+
+	PR lto/60179
+	* lto.c (compare_tree_sccs_1): Do not compare
+	DECL_FUNCTION_SPECIFIC_TARGET.
+	(lto_read_decls): Re-build DECL_FUNCTION_SPECIFIC_TARGET.
+
+2014-02-12  Richard Biener  <rguenther@suse.de>
+
+	PR lto/60060
+	* lto-lang.c (lto_write_globals): Do not call
+	wrapup_global_declarations or emit_debug_global_declarations
+	but emit debug info for non-function scope variables
+	directly.
+
+2014-02-06  Jan Hubicka  <hubicka@ucw.cz>
+
+	* lto.c (unify_scc): Free CONSTRUCTOR_ELTS.
+
+2014-02-06  Jan Hubicka  <hubicka@ucw.cz>
+
+	PR ipa/59469
+	* lto-partition.c (symbol_class): Move to cgraph.h
+	(get_symbol_class): Move to symtab.c
+	(add_references_to_partition, add_symbol_to_partition_1,
+	lto_max_map, lto_1_to_1_map, lto_balanced_map,
+	lto_promote_cross_file_statics): Update.
+
+2014-02-05  Jan Hubicka  <hubicka@ucw.cz>
+
+	* lto.c (lto_parallelism): New static var.
+	(do_stream_out, wait_for_child, stream_out): New static functions.
+	(lto_wpa_write_files): Add support for parallel streaming.
+	(do_whole_program_analysis): Set parallelism.
+	* lang.opt (fwpa): Add parameter.
+	* lto-lang.c (lto_handle_option): Handle flag_wpa.
+	(lto_init): Update use of flag_wpa.
+	* lto-streamer.h (asm_nodes_output): Declare.
+
+2014-02-05  Richard Biener  <rguenther@suse.de>
+
+	* lto.h (lto_global_var_decls): Remove.
+	* lto-lang.c (lto_init): Do not allocate lto_global_var_decls.
+	(lto_write_globals): Do nothing in WPA stage, gather globals from
+	the varpool here ...
+	* lto.c (lto_main): ... not here.
+	(materialize_cgraph): Do not call rest_of_decl_compilation
+	on the empty lto_global_var_decls vector.
+	(lto_global_var_decls): Remove.
+
+2014-02-04  Jan Hubicka  <hubicka@ucw.cz>
+
+	* lto-partition.c (get_symbol_class): Only unforced DECL_ONE_ONLY 
+	needs duplicating, not generic COMDAT.
+
+2014-02-04  Richard Biener  <rguenther@suse.de>
+
+	PR lto/59723
+	* lto.c (mentions_vars_p): Handle NAMELIST_DECL.
+	(lto_fixup_prevailing_decls): Handle fixing up CONSTRUCTOR values.
+
+2014-02-04  Jan Hubicka  <hubicka@ucw.cz>
+	    Markus Trippelsdorf
+
+	PR ipa/59469
+	* lto-symtab.c (lto_cgraph_replace_node, lto_varpool_replace_node):
+	merge force_output and forced_by_abi flags.
+
+2014-01-24  Balaji V. Iyer  <balaji.v.iyer@intel.com>
+
+	* lto-lang.c (lto_init): Replaced flag_enable_cilkplus with
+	flag_cilkplus.
+
+2014-01-09  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (gimple_canonical_types_compatible_p): Fix comment.
+
+2014-01-09  Richard Biener  <rguenther@suse.de>
+
+	PR lto/45586
+	* lto.c (hash_canonical_type): Do not hash TREE_ADDRESSABLE,
+	TYPE_ALIGN, TYPE_RESTRICT or TYPE_REF_CAN_ALIAS_ALL.
+	(gimple_canonical_types_compatible_p): Do not compare them either.
+
+2014-01-02  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	Update copyright years
+
+2013-12-06  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	* lto.c: Remove struct tags when referring to class varpool_node.
+	* lto-partition.c: Likewise.
+	* lto-symtab.c: Likewise.
+
+2013-11-29  Jakub Jelinek  <jakub@redhat.com>
+	    Richard Biener  <rguenther@suse.de>
+
+	PR lto/59326
+	* lto.c (compare_tree_sccs_1): Handle OMP_CLAUSE.
+
+2013-11-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/59326
+	* lto.c (mentions_vars_p_omp_clause): New function.
+	(mentions_vars_p): Call it for OMP_CLAUSE.  Remove break;
+	after return stmts.
+
+2013-11-22  Andrew MacLeod  <amacleod@redhat.com>
+
+	* lto.c: Add required include files from gimple.h.
+	* lto-lang.c: Likewise
+	* lto-object.c: Likewise
+	* lto-partition.c: Likewise
+	* lto-symtab.c: Likewise
+
+2013-11-18  Trevor Saunders  <tsaunders@mozilla.com>
+
+	* lto-partition.c lto-symtab.c lto.c Adjust.
+
+2013-11-14  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c: Include stringpool.h.
+	Include stor-layout.h.
+	* lto-partition.c: Include gcc-symtab.h.
+	* lto.c: Include stor-layout.h.
+
+2013-10-31  David Malcolm  <dmalcolm@redhat.com>
+
+	Automated part of renaming of symtab_node_base to symtab_node.
+
+	Patch autogenerated by rename_symtab.py from
+	https://github.com/davidmalcolm/gcc-refactoring-scripts
+	revision 58bb219cc090b2f4516a9297d868c245495ee622
+
+	* lto-partition.c (add_symbol_to_partition): Rename
+	symtab_node_base to symtab_node.
+	(get_symbol_class): Likewise.
+	(symbol_partitioned_p): Likewise.
+	(add_references_to_partition): Likewise.
+	(add_symbol_to_partition_1): Likewise.
+	(contained_in_symbol): Likewise.
+	(add_symbol_to_partition): Likewise.
+	(lto_1_to_1_map): Likewise.
+	(lto_max_map): Likewise.
+	(lto_balanced_map): Likewise.
+	(privatize_symbol_name): Likewise.
+	(promote_symbol): Likewise.
+	(may_need_named_section_p): Likewise.
+	(rename_statics): Likewise.
+	(lto_promote_statics_nonwpa): Likewise.
+	* lto-symtab.c (lto_symtab_merge): Likewise.
+	(lto_symtab_resolve_replaceable_p): Likewise.
+	(lto_symtab_symbol_p): Likewise.
+	(lto_symtab_resolve_can_prevail_p): Likewise.
+	(lto_symtab_resolve_symbols): Likewise.
+	(lto_symtab_merge_decls_2): Likewise.
+	(lto_symtab_merge_decls_1): Likewise.
+	(lto_symtab_merge_decls): Likewise.
+	(lto_symtab_merge_symbols_1): Likewise.
+	(lto_symtab_merge_symbols): Likewise.
+	(lto_symtab_prevailing_decl): Likewise.
+	* lto.c (lto_wpa_write_files): Likewise.
+	(read_cgraph_and_symbols): Likewise.
+	(do_whole_program_analysis): Likewise.
+
+2013-10-30  David Malcolm  <dmalcolm@redhat.com>
+
+	* lto-symtab.c (lto_symtab_merge_decls_2): Split symtab_node
+	declarations onto multiple lines to make things easier for
+	rename_symtab.py.
+	(lto_symtab_merge_decls_1): Likewise.
+	(lto_symtab_merge_symbols_1): Likewise.
+
+2013-10-29  Balaji V. Iyer  <balaji.v.iyer@intel.com>
+
+	* Make-lang.in (lto/lto-lang.o): Added cilk.h in dependency list.
+	* lto-lang.c (lto_init): Added a call to cilk_init_builtins if Cilk
+	Plus is enabled.
+
+2013-10-29  David Malcolm  <dmalcolm@redhat.com>
+
+	Patch autogenerated by refactor_symtab.py from
+	https://github.com/davidmalcolm/gcc-refactoring-scripts
+	revision 58bb219cc090b2f4516a9297d868c245495ee622
+
+	* lto-partition.c (lto_promote_cross_file_statics): Update for
+	conversion of symtab types to a true class hierarchy.
+	(rename_statics): Likewise.
+	(promote_symbol): Likewise.
+	(privatize_symbol_name): Likewise.
+	(lto_balanced_map): Likewise.
+	(varpool_node_cmp): Likewise.
+	(node_cmp): Likewise.
+	(lto_1_to_1_map): Likewise.
+	(undo_partition): Likewise.
+	(add_symbol_to_partition): Likewise.
+	(contained_in_symbol): Likewise.
+	(add_symbol_to_partition_1): Likewise.
+	(add_references_to_partition): Likewise.
+	(symbol_partitioned_p): Likewise.
+	(get_symbol_class): Likewise.
+	(lto_max_map): Likewise.
+	* lto-symtab.c (lto_symtab_prevailing_decl): Likewise.
+	(lto_symtab_merge_symbols): Likewise.
+	(lto_symtab_merge_symbols_1): Likewise.
+	(lto_symtab_merge_decls): Likewise.
+	(lto_symtab_merge_decls_1): Likewise.
+	(lto_symtab_merge_decls_2): Likewise.
+	(lto_symtab_resolve_symbols): Likewise.
+	(lto_symtab_resolve_can_prevail_p): Likewise.
+	(lto_symtab_symbol_p): Likewise.
+	(lto_symtab_resolve_replaceable_p): Likewise.
+	(lto_symtab_merge): Likewise.
+	(lto_varpool_replace_node): Likewise.
+	(lto_cgraph_replace_node): Likewise.
+	* lto.c (lto_main): Likewise.
+	(do_whole_program_analysis): Likewise.
+	(materialize_cgraph): Likewise.
+	(read_cgraph_and_symbols): Likewise.
+	(cmp_partitions_order): Likewise.
+	(lto_materialize_function): Likewise.
+	(has_analyzed_clone_p): Likewise.
+
+2013-10-29  Andrew MacLeod  <amacleod@redhat.com>
+
+	* lto/lto-object.c: Add gimple.h to include list.
+	* lto/lto-partition.c: Likewise.
+
+2013-10-18  Andrew MacLeod  <amacleod@redhat.com>
+
+	* lto.c: Remove tree-flow.h from include list.
+
+2013-10-15  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (hash_canonical_type): Split out from ...
+	(iterative_hash_canonical_type): ... here.  Register types
+	we recurse to.
+	(gimple_canonical_type_hash): Adjust.
+	(gimple_register_canonical_type_1): Split out from ...
+	(gimple_register_canonical_type): ... here.  Cache computed
+	hash value.
+	(lto_register_canonical_types): Split into two modes,
+	clearing and computing TYPE_CANONICAL.
+	(lto_read_decls): Adjust.
+	(read_cgraph_and_symbols): Do two passes over global trees,
+	first clearing then computing TYPE_CANONICAL.
+
+2013-10-14  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (gimple_canonical_types): Move out-of GC space.
+	(canonical_type_hash_cache): Make a pointer-map.
+	(num_canonical_type_hash_entries, num_canonical_type_hash_queries):
+	New counters.
+	(iterative_hash_canonical_type): Adjust.
+	(read_cgraph_and_symbols): Likewise.
+	(print_lto_report_1): Likewise.
+
+2013-10-14  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (gimple_types, type_hash_cache, struct type_pair_d,
+	type_pair_cache, lookup_type_pair, struct sccs, next_dfs_num,
+	gtc_next_dfs_num, compare_type_names_p, gtc_visit,
+	gimple_types_compatible_p_1, gimple_types_compatible_p,
+	visit, iterative_hash_name, struct type_hash_pair,
+	type_hash_pair_compare, iterative_hash_gimple_type, gimple_type_hash,
+	gimple_type_eq, gimple_register_type, num_not_merged_types,
+	num_not_merged_types_in_same_scc, num_not_merged_types_trees,
+	num_not_merged_types_in_same_scc_trees): Remove old merging code
+	and statistics.
+	(lto_read_decls): Do not run old merging code in parallel.
+	(read_cgraph_and_symbols): Do not init/free old merging
+	data structures.
+	(print_lto_report_1): Do not report differences of old vs. new
+	merging code.
+
+2013-10-14  Richard Biener  <rguenther@suse.de>
+
+	* lto-lang.c (lto_init): Do not re-init canonical types here.
+	(lto_register_canonical_types): Move to ...
+	* lto.c (lto_register_canonical_types): ... here.
+	(gimple_canonical_types, canonical_type_hash_cache,
+	iterative_hash_canonical_type, gimple_canonical_type_hash,
+	gimple_canonical_types_compatible_p, gimple_canonical_type_eq,
+	gimple_register_canonical_type): Add canonical type merging machinery
+	moved from gimple.c.
+	(read_cgraph_and_symbols): Init and free canonical type tables
+	here.
+	(print_lto_report_1): Report canonical type table stats here.
+
+2013-10-11  Jakub Jelinek  <jakub@redhat.com>
+
+	* lto-lang.c (DEF_FUNCTION_TYPE_8): Define.
+
+2013-09-25  Tom Tromey  <tromey@redhat.com>
+
+	* Make-lang.in (LTO_H, LINKER_PLUGIN_API_H, LTO_TREE_H)
+	(lto/lto-lang.o, lto/lto.o, lto/lto-partition.o)
+	(lto/lto-object.o): Remove.
+
+2013-09-06  Richard Biener  <rguenther@suse.de>
+
+	* lto-symtab.c: Move from gcc/
+	* lto.h: Include vec.h.
+	(lto_global_var_decls): Declare.
+	* lto.c (lto_global_var_decls): Move definition here.
+	* Make-lang.in (LTO_OBJS): Add lto-symtab.o.
+	(lto-symtab.o): Add.
+	* config-lang.in (gtfiles): Add lto.h.
+
+2013-08-31  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (mentions_vars_p_field_decl, lto_fixup_prevailing_decls): 
+	DECL_FIELD_OFFSET can contain an reference to variable.
+
+2013-08-31  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (tree_with_vars): Turn into vector.
+	(MAYBE_REMEMBER_WITH_VARS): Change to...
+	(CHECK_VAR): ... this one.
+	(CHECK_NO_VAR): New macro.
+	(maybe_remember_with_vars_typed): Turn to ...
+	(mentions_vars_p_typed): ... this one.
+	(maybe_remember_with_vars_common): Turn to ...
+	(mentions_vars_p_comon): ... this one.
+	(maybe_remember_with_vars_decl_minimal): Turn to ...
+	(mentions_vars_p_decl_minmal): ... this one.
+	(maybe_remember_with_vars_decl_common): Turn to ...
+	(mentions_vars_p_decl_common): ... this one.
+	(maybe_remember_with_vars_decl_with_vis): Turn to ...
+	(mentions_vars_p_decl_with_vis): ... this one.
+	(maybe_remember_with_vars_decl_non_common): Turn to ...
+	(mentions_vars_p_decl_non_common): ... this one.
+	(maybe_remember_with_vars_function): Turn to ...
+	(mentions_vars_p_function): ... this one.
+	(maybe_remember_with_vars_field_decl): Turn to ...
+	(mentions_vars_p_field_decl): ... this one.
+	(maybe_remember_with_vars_type): Turn to ...
+	(mentions_vars_p_type): ... this one.
+	(maybe_remember_with_vars_binfo): Turn to ...
+	(mentions_vars_p_binfo): ... this one.
+	(maybe_remember_with_vars_constructor): Turn to ...
+	(mentions_vars_p_constructor): ... this one.
+	(maybe_remember_with_vars_expr): Turn to ...
+	(mentions_vars_p_expr): ... this one.
+	(maybe_remember_with_vars): Turn to ...
+	(mentions_vars_p): ... this one.
+	(lto_read_decls): Update.
+	(LTO_SET_PREVAIL): Do not call function for internal decls.
+	(lto_fixup_prevailing_decls): Update to match mentions_vars_p;
+	check that something was updated.
+	(lto_fixup_state): Do not care about internal decls.
+	(lto_fixup_decls): Update.
+	(read_cgraph_and_symbols): Update.
+
+2013-08-29  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Free decl states.
+
+2013-08-29  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (compare_tree_sccs_1): Compare  DECL_FINAL_P,
+	DECL_CXX_CONSTRUCTOR_P, DECL_CXX_DESTRUCTOR_P and
+	TYPE_FINAL_P.
+
+2013-08-28  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (compare_tree_sccs_1): Drop DECL_ERROR_ISSUED,
+	DECL_DEFER_OUTPUT and DECL_IN_TEXT_SECTION.
+	(unify_scc): Do checking assert.
+
+2013-08-06  Jan Hubicka  <jh@suse.cz>
+	    Martin Liska  <marxin.liska@gmail.com>
+
+	* lto-partition.c (lto_balanced_map): Always base order on 
+	source file order.
+
+2013-08-06  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_function): Do not read body anymore.
+
+2013-08-02  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_function): Do not push struct function.
+	* lto-partition.c (get_symbol_class): Handle abstracts correctly.
+	(may_need_named_section_p): Even abstract origins may need
+	named section.
+
+2013-07-30  David Malcolm  <dmalcolm@redhat.com>
+
+	* Make-lang.in (lto/lto.o:): Depend on CONTEXT_H and
+	PASS_MANAGER_H.
+
+	* lto.c (do_whole_program_analysis): Update for move of
+	all_regular_ipa_passes from a global to a field of class
+	pass_manager.
+
+2013-07-21   Ondřej Bílka  <neleai@seznam.cz>
+
+	* lto-partition.c: Fix typos.
+
+2013-06-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (lto_balanced_map): Fix -fno-toplevel-reorder
+	partitioning of variables.
+
+2013-06-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Set cgraph state.
+
+2013-06-19  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (add_references_to_partition): Use
+	ctor_for_folding.
+
+2013-06-18  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (lto_register_var_decl_in_symtab): Pass in cache index
+	and use it.
+	(lto_register_function_decl_in_symtab): Likewise.
+	(cmp_tree): New function.
+	(unify_scc): Instead of using the streamer cache map from entry
+	to cache index match up the two maps we have by sorting them.
+	Adjust calls to lto_register_var_decl_in_symtab and
+	lto_register_function_decl_in_symtab.
+
+2013-06-17  Richard Biener  <rguenther@suse.de>
+
+	* Make-lang.in (lto.o): Add $(DATA_STREAMER_H) dependency.
+	* lto.c: Include data-streamer.h.
+	(lto_read_in_decl_state): Use streamer_tree_cache_get_tree.
+	(gimple_type_leader_entry_s, gimple_type_leader,
+	gimple_lookup_type_leader): Remove.
+	(gtc_visit): Simplify.
+	(gimple_types_compatible_p): Likewise.
+	(gimple_register_type_1): Likewise.  Merge into ...
+	(gimple_register_type): ... this.  Keep it as legacy for
+	statistics purposes for now.
+	(fixup_integer_cst): Remove.
+	(LTO_FIXUP_TREE, lto_fixup_types, lto_ft_*): Simplify and
+	rename to ...
+	(MAYBE_REMEMBER_WITH_VARS, maybe_remember_with_vars,
+	maybe_remember_with_vars_*): ... these.
+	(uniquify_nodes): Remove.
+	(lto_fixup_prevailing_type): New function.
+	(struct tree_scc, struct tree_scc_hasher): New type and hasher.
+	(tree_scc_hash, tree_scc_hash_obstack): New globals.
+	(num_merged_types, num_prevailing_types, num_not_merged_types,
+	num_not_merged_types_in_same_scc, total_scc_size, num_sccs_read,
+	total_scc_size_merged, num_sccs_merged, num_scc_compares,
+	num_scc_compare_collisions): New global counters.
+	(compare_tree_sccs_1): New function.
+	(compare_tree_sccs): Likewise.
+	(unify_scc): Likewise.
+	(lto_read_decls): Stream in tree SCCs and unify them on the
+	way in.  Finalize prevailing SCC tree members.
+	(read_cgraph_and_symbols): Do not initialize or free gimple_type_leader.
+	Allocate and free tree_scc_hash_obstack and tree_scc_hash, do not bother
+	to ggc-collect during merging.
+	(print_lto_report_1): Adjust for new merging code.
+
+2013-06-12  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Set cgraph into streaming state.
+
+2013-06-12  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (register_resolution): Take lto_file_data argument.
+	(lto_register_var_decl_in_symtab,
+	lto_register_function_decl_in_symtab): Update.
+	(read_cgraph_and_symbols): Update resolution_map handling.
+
+2013-06-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (get_symbol_class): Simplify weakref handling.
+	(add_symbol_to_partition_1): Likewise.
+	(contained_in_symbol): Likewise.
+	(lto_balanced_map): Likewise.
+	(rename_statics): Drop weakref.
+
+2013-06-05  Richard Biener  <rguenther@suse.de>
+
+	* lto.c (num_merged_types): New global variable.
+	(uniquify_nodes): Increase num_merged_types when merging a type.
+	(print_lto_report_1): Output the number of merged types.
+
+2013-06-01  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Simplify dumping; Replace
+	lto_symtab_merge_cgraph_nodes by lto_symtab_merge_symbols.
+	(do_whole_program_analysis): Update dumping.
+
+2013-05-29  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (has_analyzed_clone_p, lto_materialize_function): Update for new symtab
+	flags.
+	* lto-partition.c (get_symbol_class, lto_balanced_map): Likewise.
+
+2013-05-15  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (privatize_symbol_name): Return true when
+	privatizing happened.
+	(rename_statics): Do not go into infinite loop when privatizing
+	is not needed.
+
+2013-05-16  Jason Merrill  <jason@redhat.com>
+
+	* Make-lang.in ($(LTO_EXE)): Use link mutex.
+
+2013-05-15  Martin Jambor  <mjambor@suse.cz>
+
+	* lto-partition.c (lto_balanced_map): Print symbol order instead
+	of node uids.
+
+2013-05-15  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/57038
+	PR lto/47375
+	* lto-partition.c (get_symbol_class): Fix weakrefs.
+	(lto_balanced_map): Fix weakrefs.
+	(privatize_symbol_name): Remove unnecesary label.
+	(rename_statics): Handle weakrefs as statics.
+
+2013-05-09  Jan Hubicka  <jh@suse.cz>
+	    Richard Biener  <rguenther@suse.de>
+
+	* lto.c (lto_register_var_decl_in_symtab): Don't do renaming.
+	(lto_register_var_decl_in_symtab): Likewise.
+	(lto_main): Promote statics.
+	* lto-partition.c (privatize_symbol_name): New function.
+	(promote_symbol): Use it.
+	(may_need_named_section_p): New predicate.
+	(rename_statics): New functions.
+	(lto_promote_cross_file_statics): Simplify; do renaming.
+	(lto_promote_statics_nonwpa): New function.
+	* lto-partition.h (lto_promote_statics_nonwpa): New function.
+
+2013-02-08  Richard Biener  <rguenther@suse.de>
+
+	PR lto/56231
+	* lto-lang.c (lto_init): Do not enter a dummy file.
+
+2013-02-07  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR bootstrap/56227
+	* lto.c (lto_resolution_ready): Use %wx instead of
+	HOST_WIDE_INT_PRINT_HEX_PURE in the argument to internal_error.
+
+2013-02-04  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/56168
+	* lto.c (read_cgraph_and_symbols): Do not call lto_symtab_merge_decls
+	or lto_fixup_decls at LTRANS time.
+
+2013-01-09  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/45375
+	* lto.c (do_whole_program_analysis): Remove unreachable nodes after IPA.
+
+2012-12-10  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR lto/55466
+	* lto.c (lto_register_var_decl_in_symtab): Don't record static
+	variables.
+	(lto_main): Record the global variables if WPA isn't enabled.
+
+2012-11-20  Diego Novillo  <dnovillo@google.com>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	* lto.c: Replace all vec<T, A>() initializers with vNULL.
+
+2012-11-16  Diego Novillo  <dnovillo@google.com>
+
+	Adjust for new vec API (http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec)
+
+	* lto-lang.c: Use new vec API in vec.h.
+	* lto-partition.c: Likewise.
+	* lto-partition.h: Likewise.
+	* lto.c: Likewise.
+
+2012-10-31  Lawrence Crowl  <crowl@google.com>
+
+	* lto.c (lto_wpa_write_files): Change symtab checking to a checked
+	down-cast via dyn_cast.
+	* lto-partition.c (add_symbol_to_partition_1): Likewise.
+	(undo_partition): Likewise.
+	(lto_balanced_map): Likewise.
+	(get_symbol_class): Likewise and via is_a.
+	(lto_balanced_map): Change symtab checking to is_a.
+
+2012-10-12  Richard Biener  <rguenther@suse.de>
+
+	PR lto/54898
+	* lto.c (gimple_types_compatible_p_1): Also compare
+	TYPE_MAIN_VARIANT.
+	(iterative_hash_gimple_type): Also hash TYPE_MAIN_VARIANT.
+
+2012-10-09  Tobias Burnus  <burnus@net-b.de>
+
+	* lto-lang.c (lto_register_builtin_type): Avoid useless
+	decl creation.
+	* lto-object.c (lto_obj_file_open, lto_obj_file_open): Free memory.
+
+2012-10-08  Tobias Burnus  <burnus@net-b.de>
+
+	* lto.c (lto_wpa_write_files, read_cgraph_and_symbols):
+	Free lto_file struct after closing the file.
+
+2012-10-08  Jan Hubicka  <jh@suse.cz>
+
+	* lto/lto.c (remember_with_vars): Also fixup INTEGER_CST.
+	(fixup_integer_cst): New functoin.
+	(lto_ft_type): Fixup BASETYPE of methods and offsets.
+
+2012-10-07  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Release type merging hash early;
+	release input encoders.
+	* lto-partition.c (new_partition): Update for new lto_symtab_encoder_new.
+
+2012-10-06  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/54790 
+	* lto.c (resolution_map): New static var.
+	(register_resolution): New function.
+	(lto_register_var_decl_in_symtab): Use it.
+	(read_cgraph_and_symbols): Copy resolutions into the symtab.
+
+2012-09-20  Martin Jambor  <mjambor@suse.cz>
+
+	* lto.c (lto_materialize_function): Call push_struct_function and
+	pop_cfun.
+
+2012-09-19  Dehao Chen  <dehao@google.com>
+
+	* lto/lto.c (lto_fixup_prevailing_decls): Remove tree.exp.block field.
+
+2012-09-19  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_function): Update confused comment.
+	(read_cgraph_and_symbols): Do not free symtab.
+
+2012-09-12  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (do_whole_program_analysis): Care timevars, statistics and
+	AUX pointer cleaning. Add max partitioning.
+	* lto-partition.c (enum symbol_class): New.
+	(get_symbol_class): New function.
+	(symbol_partitioned_p): New function.
+	(add_references_to_partition): Remove.
+	(add_aliases_to_partition): Remove.
+	(add_cgraph_node_to_partition_1): Remove.
+	(add_cgraph_node_to_partition): Remove.
+	(add_symbol_to_partition): New function.
+	(add_symbol_to_partition_1): New function.
+	(contained_in_symbol): New function.
+	(partition_cgraph_node_p): Remove.
+	(partition_varpool_node_p): Remove.
+	(partition_symbol_p): Remove.
+	(lto_1_to_1_map): Cleanup.
+	(lto_max_map): New.
+	(lto_balanced_map): Update.
+	(lto_promote_cross_file_statics): Update.
+	* lto-partition.h (lto_max_map): Declare.
+	* timevar.def (TV_WHOPR_PARTITIONING): New timevar.
+
+2012-09-11  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/54312
+	* lto.c (uniquify_nodes): Remove quadratic loop checking if the
+	type is variant leader.
+
+2012-09-11  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (enum gtc_mode): Remove.
+	(struct type_pair_d): Adjust.
+	(lookup_type_pair): Likewise.
+	(gimple_type_leader): Do not mark as deletable.
+	(gimple_lookup_type_leader): Adjust.
+	(gtc_visit): Likewise.
+	(gimple_types_compatible_p_1): Likewise.
+	(gimple_types_compatible_p): Likewise.
+	(gimple_type_hash): Likewise.
+	(gimple_register_type): Likewise.
+	(read_cgraph_and_symbols): Manage lifetime of tables
+	here.
+
+2012-09-11  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (gimple_types, type_hash_cache, enum gtc_mode,
+	struct type_pair_d, lookup_type_pair, struct sccs,
+	next_dfs_num, gtc_next_dfs_num, struct gimple_type_leader_entry_s,
+	gimple_type_leader, gimple_lookup_type_leader, compare_type_names_p,
+	gtc_visit, gimple_types_compatible_p_1, gimple_types_compatible_p,
+	visit, iterative_hash_name, struct type_hash_pair,
+	type_hash_pair_compare, iterative_hash_gimple_type, gimple_type_hash,
+	gimple_type_eq, gimple_register_type_1, gimple_register_type):
+	Move here from gimple.c
+	(read_cgraph_and_symbols): Free hash tables here.
+	(print_lto_report_1): New function wrapping print_lto_report.
+	(do_whole_program_analysis): Call it.
+	(lto_main): Likewise.
+
+2012-09-10  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (partition_symbol_p): Forward declare.
+	(add_references_to_partition): Reimplement using partition_symbol_p.
+	(add_aliases_to_partition): Break out from add_references_to_partition;
+	reimplement using partition_symbol_p.
+	(add_cgraph_node_to_partition_1): Handle callees using partition_symbol_p;
+	add sanity checks.
+	(add_varpool_node_to_partition): Use add_aliases_to_partition.
+	(partition_varpool_node_p): Do not special case aliases.
+
+2012-08-12  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_wpa_write_files): Do not delete partition encoder;
+	it is deleted after streaming.
+	* lto-partition.c (partition_symbol_p): New function.
+	(promote_var, promote_fn): Remove.
+	(promote_symbol): New function.
+	(lto_promote_cross_file_statics): First compute boundaries; rewrite
+	to lookup the actual boundaries instead of computing them ad-hoc.
+
+2012-08-12  Jan Hubicka  <jh@suse.cz>
+
+	Replace cgraph_node_set and varpool_node_set by symtab_node_encoder
+	in partitioning.
+	* lto-partition.h (ltrans_partition_def): Replace cgraph_set and varpool_set
+	by encoder.
+	* lto-partition.c (new_partition): Update.
+	* lto.c (cmp_partitions_order): Update.
+	(lto_wpa_write_files): Update.
+	(free_ltrans_partitions): Update.
+	(add_references_to_partition): Update.
+	(add_cgraph_node_to_partition_1): Update.
+	(add_cgraph_node_to_partition): Update.
+	(add_varpool_node_to_partition): Update.
+	(undo_partition): Update.
+	(lto_balanced_map): Update.
+	(set_referenced_from_other_partition_p, set_reachable_from_other_partition_p,
+	set_referenced_from_this_partition_p): Update.
+	(lto_promote_cross_file_statics): Update.
+
+2012-08-12  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (set_referenced_from_other_partition_p,
+	set_reachable_from_other_partition_p, set_referenced_from_this_partition_p):
+	New functions.
+	(lto_promote_cross_file_statics): Use them.
+
+2012-07-24  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Use input_symtab.
+
+2012-07-24  Uros Bizjak  <ubizjak@gmail.com>
+
+	* lto-tree.h (lang_decl): Add variable_size GTY option.
+
+2012-07-16  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* lto.c: Do not include timevar.h.
+	* Make-lang.in: Fix dependencies.
+
+2012-06-18  Lawrence Crowl  <crowl@google.com>
+
+        * lto.c (do_whole_program_analysis):  Rename use of TV_PHASE_CGRAPH to
+	TV_PHASE_OPT_GEN.  Use new timevar TV_PHASE_STREAM_OUT around the call
+	to lto_wpa_write_files.
+	(lto_main):  Rename use of TV_PHASE_CGRAPH to TV_PHASE_OPT_GEN.  Move
+	start of TV_PHASE_OPT_GEN to include call to materialize_cgraph.  Use
+	TV_PHASE_SETUP for the call to lto_init.  Use new timevar
+	TV_PHASE_STREAM_IN around the call to read_cgraph_and_symbols.
+	Turn TV_PHASE_PARSING off then back on again, because LTO is pretending
+	to be a front end, but is not one.
+
+2012-05-18  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_constructors_and_inits): Remove.
+	(read_cgraph_and_symbols): Remove handling of alias pairs.
+
+2012-05-17  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (add_references_to_partition): Handle external vars.
+	(partition_varpool_node_p): Likewise.
+	(lto_promote_cross_file_statics): Do not promote externals.
+
+2012-05-14  Bernd Schmidt  <bernds@codesourcery.com>
+
+	* lto-lang.c (handle_fnspec_attribute): New static function.
+	(lto_attribute_table): Add "fn spec".
+	(DEF_ATTR_STRING): Define and undefine along with the other macros.
+
+2012-05-04  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (do_whole_program_analysis): Set timevars correctly.
+	(lto_main): Likewise.
+
+2012-05-04  Richard Guenther  <rguenther@suse.de>
+
+	* lang.opt (fwpa): Do not mark as Optimization.
+	(fltrans): Likewise.
+
+2012-04-30  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_main): Use compile ().
+	* lto-partition.c (partition_cgraph_node_p): Use
+	symtab_used_from_object_file_p.
+	(partition_varpool_node_p): Likewise.
+
+2012-04-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (partition_cgraph_node_p): Use force_output.
+
+2012-04-18  Jan Hubicka  <jh@suse.cz>
+
+	* lto-partition.c (add_references_to_partition, lto_balanced_map):
+	Update for new ipa-ref API.
+
+2012-04-16  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Use FOR_EACH
+        walkers to walk cgraph and varpool.
+	(materialize_cgraph): Likewise.
+	* lto-partition.c (lto_1_to_1_map): Likewise.
+	(lto_balanced_map): Likewise.
+	(lto_promote_cross_file_statics): Likewise.
+
+2012-04-14  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c: Update field referenced for new cgraph/varpool layout.
+	* lto-partition.c: Likewise.
+
+2012-04-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c: Update copyright; remove params.h, ipa-inline.h
+	and ipa-utils.h inlines; inline lto-partition.h
+	(ltrans_partition_def, ltrans_partition, add_cgraph_node_to_partition,
+	add_varpool_node_to_partition, new_partition, free_ltrans_partitions,
+	add_references_to_partition, add_cgraph_node_to_partition_1,
+	add_cgraph_node_to_partition, add_varpool_node_to_partition,
+	undo_partition, partition_cgraph_node_p, partition_varpool_node_p,
+	lto_1_to_1_map, node_cmp, varpool_node_cmp, lto_balanced_map,
+	promote_var, promote_fn, lto_promote_cross_file_statics): move to...
+	* lto-partition.c: ... here; new file.
+	* lto-partition.h: New file.
+	* Make-lang.in (lto.o): Update dependencies.
+	(lto-partition.o): New.
+
+2012-04-05  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Remove
+	definition.
+
+2012-03-12  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (builtin_type_for_size): Use lto_type_for_size.
+
+2012-03-06  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/52097
+	* lto.c (uniquify_nodes): Merge TYPE_FIELDS of variant types.
+
+2012-02-28  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/52400
+	* lto.c (lto_register_function_decl_in_symtab): Do not register
+	a reverse renamed decl mapping.
+
+2012-01-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/51774
+	* lto-lang.c (handle_returns_twice_attribute): New function.
+	(lto_attribute_table): Add returns_twice attribute.
+
+2011-12-21  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (GIMPLE_REGISTER_TYPE): New define.
+	(LTO_FIXUP_TREE): Use it.
+	(uniquify_nodes): Mark new non-prevailing types and avoid
+	calling gimple_register_type on others.
+	(lto_read_decls): Add comment.
+
+2011-12-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* lto.h (lto_parse_hex): Delete.
+	* lto.c (lto_read_decls): Use 'int' for offsets.
+	(lto_parse_hex): Make static and return proper 64-bit host type.
+	(lto_resolution_read): Use proper 64-bit host type.
+
+2011-12-13  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/48354
+	* lto.c (lto_ft_decl_non_common): When we merged DECL_ORIGINAL_TYPE
+	with the type of the TYPE_DECL clear DECL_ORIGINAL_TYPE.
+
+2011-12-01  Uros Bizjak  <ubizjak@gmail.com>
+
+	* lto-lang.c (lto_attribute_table): Handle *tm regparm.
+	(ignore_attribute): New.
+
+2011-11-21  Aldy Hernandez  <aldyh@redhat.com>
+
+	* lto-lang.c (lto_attribute_table): Handle transaction_pure.
+	(handle_transaction_pure_attribute): New.
+
+2011-11-03  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/44965
+	* lto-lang.c (lto_post_options): Do not read file options.
+	* lto.c (lto_read_all_file_options): Remove.
+	(lto_init): Call lto_set_in_hooks here.
+
+2011-10-09  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (node_cmp, varpool_node_cmp): New functions.
+	(lto_balanced_map): Honnor -fno-toplevel-reorder of vars&functions.
+	(cmp_partitions): Rename to ...
+	(cmp_partitions_size): ... this one.
+	(cmp_partitions_order): New function.
+	(lto_wpa_write_files): Sort partitions by order when
+	-fno-toplevel-reorder is used.
+
+2011-10-09  Andi Kleen  <ak@linux.intel.com>
+
+	* lto.c (lto_section_read): Call fatal_error on IO or mmap errors.
+
+2011-10-11  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	* lto-lang.c (def_builtin_1): Delete old interface with two
+	parallel arrays to hold standard builtin declarations, and replace
+	it with a function based interface that can support creating
+	builtins on the fly in the future.  Change all uses, and poison
+	the old names.  Make sure 0 is not a legitimate builtin index.
+
+2011-10-02   Andi Kleen  <ak@linux.intel.com>
+
+	* lto-object.c (lto_obj_add_section_data): Add list.
+	(lto_obj_add_section): Fill in list.
+	(ltoobj_build_section_table): Pass through list.
+	* lto.c (file_data_list): Declare.
+	(create_subid_section_table): Pass arguments directly.
+	Fill in list of file_datas.
+	(lwstate): Delete.
+	(lto_create_files_from_ids): Pass in direct arguments.
+	Don't maintain list.
+	(lto_file_read): Use explicit section and file data lists.
+	(lto_read_all_file_options): Pass in section_list.
+	* lto.h (lto_obj_build_section_table): Add list.
+	(lto_section_slot): Add next.
+	(lto_section_list): Declare.
+
+2011-10-02  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/47247
+	* common.c (lto_resolution_str): Add new resolution.
+	* common.h (lto_resolution_str): Likewise.
+
+2011-09-30  H.J. Lu  <hongjiu.lu@intel.com>
+	    Andi Kleen  <ak@linux.intel.com>
+
+	PR lto/50568
+	* lto.c (lto_splay_tree_delete_id): New.
+	(lto_splay_tree_compare_ids): Likewise.
+	(lto_splay_tree_lookup): Likewise.
+	(lto_splay_tree_id_equal_p): Likewise.
+	(lto_splay_tree_insert): Likewise.
+	(lto_splay_tree_new): Likewise.
+	(lto_resolution_read): Change id to unsigned HOST_WIDE_INT.
+	Use lto_splay_tree_id_equal_p and lto_splay_tree_lookup.
+	(create_subid_section_table): Use lto_splay_tree_lookup and
+	lto_splay_tree_insert.
+	(lto_file_read): Use lto_splay_tree_new.
+
+2011-09-26   Andi Kleen  <ak@linux.intel.com>
+
+	* lto.c (lto_resolution_read): Remove id dumping.
+	(lto_section_with_id): Turn id HOST_WIDE_ID.
+	(create_subid_section_table): Dito.
+
+2011-08-28  Dodji Seketeli  <dodji@redhat.com>
+
+	* lto-lang.c (lto_init): Likewise.  Also, avoid calling
+	linemap_add twice.
+
+2011-08-11  Martin Jambor  <mjambor@suse.cz>
+
+	* lto.c (uniquify_nodes): Use main variant's BINFO too.
+
+2011-08-08   Diego Novillo  <dnovillo@google.com>
+
+	* Make-lang.in (lto/lto.o): Add TREE_STREAMER_H.
+	* lto.c: Include tree-streamer.h.
+
+2011-07-06  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (lto_init):
+	Merge calls to build_common_tree_nodes and build_common_tree_nodes_2.
+
+2011-06-11  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/48246
+	* lto.c (lto_1_to_1_map): Don't create empty partitions.
+	(lto_balanced_map): Likewise.
+
+2011-06-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (add_cgraph_node_to_partition_1): Break out from ...
+	(add_cgraph_node_to_partition) ... here; walk aliases.
+	(lto_1_to_1_map): Remove same body alias code.
+	(promote_fn): Likewise.
+	(lto_promote_cross_file_statics): Update comment.
+
+
+2011-06-07  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (uniquify_nodes): Move code to register decls to
+	the loop that computes canonical types.
+
+2011-06-07  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (lto_init): Do not set
+	size_type_node or call set_sizetype.
+
+2011-06-04  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_init): New.
+	(lto_main): Call it.
+
+2011-06-03  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (get_resolution): Move from lto-streamer-in.c.
+	(lto_register_var_decl_in_symtab): Likewise.
+	(lto_register_function_decl_in_symtab): Likewise.
+	(uniquify_nodes): Call lto_register_var_decl and
+	lto_register_function_decl_in_symtab after reading a new
+	VAR_DECL or FUNCTION_DECL.
+
+2011-06-01  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (lto_register_canonical_types): New function.
+	(lto_init): Register common nodes with the canonical type machinery.
+	Do not play tricks with char_type_node.
+
+2011-05-26  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (uniquify_nodes): Fix bug in one of the previous changes.
+
+2011-05-25  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_ft_typed): New function.
+	(lto_ft_common): Call it.
+	(lto_ft_constructor): Likewise.
+	(lto_ft_expr): Likewise.
+	(lto_fixup_prevailing_decls): Check for TS_COMMON before accessing
+	TREE_CHAIN.
+
+2011-05-20  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_ft_common): Remove pointer-to chain teardown.
+	(lto_ft_type): Move main-variant and pointer-to chain building ...
+	(uniquify_nodes): ... here.  Compute TYPE_CANONICAL also here,
+	in a separate final loop.
+
+2011-05-19  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (uniquify_nodes): First register all types before
+	fixing up the tree SCC.
+
+2011-05-11  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/48952
+	* lto.c (do_whole_program_analysis): Do not register cgraph hooks.
+
+2011-05-11  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_ft_type): Use TYPE_MINVAL and TYPE_MAXVAL.  Adjust
+	location of binfo field.
+	(lto_fixup_prevailing_decls): Likewise.
+
+2011-05-10  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (def_fn_type): Don't call build_function_type, call
+	build_function_type_array or build_varargs_function_type_array
+	instead.
+
+2011-05-07  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* lto-lang.c (global_bindings_p): Return bool.
+
+2011-05-07  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_function): Use
+	cgraph_function_with_gimple_body_p.
+	(add_cgraph_node_to_partition): Do not re-add items to partition;
+	handle thunks.
+	(add_varpool_node_to_partition): Do not re-add items to partition.
+
+2011-05-03  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (free_ltrans_partitions): Fix accidental commit.
+
+2011-05-03  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (ltrans_partition_def): Remove GTY annotations.
+	(ltrans_partitions): Move to heap.
+	(new_partition): Update.
+	(free_ltrans_partitions): New function.
+	(lto_wpa_write_files): Use it.
+
+2011-04-29  Martin Jambor  <mjambor@suse.cz>
+
+	* lto.c: Include ipa-utils.h.
+	(lto_balanced_map): Update call to ipa_reverse_postorder.
+	* Make-lang.in (lto/lto.o): Add IPA_UTILS_H to dependencies.
+
+2011-04-29  Michael Matz  <matz@suse.de>
+
+	* lto.c (toplevel): Include tree-flow.h.
+	(lto_read_in_decl_state): Don't merge types here.
+	(tree_with_vars): New static hash table.
+	(remember_with_vars): New static functions.
+	(LTO_FIXUP_TYPE): New macro.
+	(lto_ft_common, lto_ft_decl_minimal, lto_ft_decl_common,
+	lto_ft_decl_with_vis, lto_ft_decl_non_common, lto_ft_function,
+	lto_ft_field_decl, lto_ft_type, lto_ft_binfo, lto_ft_constructor,
+	lto_ft_expr, lto_fixup_types, uniquify_nodes): New static functions.
+	(lto_read_decls): Uniquify while reading in trees.
+	(lto_fixup_data_t, LTO_FIXUP_SUBTREE,
+	LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE, no_fixup_p, lto_fixup_common,
+	lto_fixup_decl_minimal, lto_fixup_decl_common, lto_fixup_decl_with_vis,
+	lto_fixup_decl_non_common, lto_fixup_function, lto_fixup_field_decl,
+	lto_fixup_type, lto_fixup_binfo, lto_fixup_constructor,
+	lto_fixup_tree): Remove.
+	(lto_fixup_state): Remove data argument.  Use
+	lto_symtab_prevailing_decl.
+	(LTO_SET_PREVAIL, LTO_NO_PREVAIL): New macros.
+	(lto_fixup_prevailing_decls): New function.
+	(lto_fixup_state_aux): Argument aux is unused.
+	(lto_fixup_decls): Don't allocate pointer sets, don't use
+	lto_fixup_tree, use lto_fixup_prevailing_decls.
+	(read_cgraph_and_symbols): Allocate and remove tree_with_vars.
+	* Make-lang.in (lto/lto.o): Depend on $(TREE_FLOW_H).
+
+2011-04-16  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* lto.c (lto_balanced_map): Fix typos in head comment.
+	(lto_promote_cross_file_statics): Fix long lines and remove redundant
+	test.
+
+2011-04-16  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_balanced_map): Update.
+
+2011-04-14  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c: Include ipa-inline.h
+	(add_cgraph_node_to_partition, undo_partition): Use inline_summary
+	accessor.
+	(ipa_node_duplication_hook): Fix declaration.
+	* Make-lang.in (lto.o): Update dependencies.
+
+2011-04-12  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-tree.h (union lang_tree_node): Check for TS_COMMON before
+	calling TREE_CHAIN.
+	* lto.c (lto_fixup_common): Likewise.
+
+2011-04-08  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (handle_sentinel_attribute): Don't use TYPE_ARG_TYPES.
+	(handle_type_generic_attribute): Likewise.
+
+2011-04-03  Michael Matz  <matz@suse.de>
+
+	* lto.c (lto_materialize_function): Don't read and then discard
+	sections in WPA mode.
+	(lto_read_in_decl_state): Adjust call to lto_streamer_cache_get.
+
+	* lto-lang.c (registered_builtin_fndecls): Remove.
+	(lto_getdecls): Return NULL_TREE.
+	(lto_builtin_function): Don't remember in registered_builtin_fndecls.
+
+2011-03-31  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/48246
+	* lto.c (lto_wpa_write_files): Disable assert for non-empty
+	partitions when checking is not enabled.
+
+2011-03-25  Kai Tietz  <ktietz@redhat.com>
+
+	* lto.c (lto_resolution_read): Use filename_cmp instead
+	of strcmp.
+	(lto_read_section_data): Likewise.
+
+2011-03-25  Jeff Law  <law@redhat.com>
+
+	* lto/lto-lang.c (def_fn_type): Add missing va_end.
+
+2011-03-21  Kai Tietz  <ktietz@redhat.com>
+
+	PR target/12171
+	* lto-lang.c (lto_attribute_table): Adjust table.
+
+2011-02-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR bootstrap/47807
+	* Make-lang.in (lto/lto-lang.o): Depend on $(LTO_STREAMER_H) instead
+	of lto-streamer.h.
+
+2011-02-18  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/47798
+	* lto-tree.h (lto_global_var_decls): Do not declare here.
+	* lto-lang.c: Include lto-streamer.h.
+	* Make-lang.in (lto-lang.o): Adjust dependencies.
+
+2011-02-10  Kai Tietz  <kai.tietz@onevision.com>
+
+	PR lto/47241
+	* lto.c (lto_read_section_data): Free
+	fd_name in failure case.
+	For mingw targets don't hash file-descriptor.
+	(read_cgraph_and_symbols): Close current_lto_file
+	in failure case.
+
+2011-01-11  Jan Hubicka  <jh@suse.cz>
+
+	PR lto/45721
+	PR lto/45375
+	* lto.c (partition_cgraph_node_p, partition_varpool_node_p): Weakrefs
+	are not partitioned.
+
+2010-12-22  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (handle_nonnull_attribute, handle_sentinel_attribute):
+	Use prototype_p.
+
+2010-12-06  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/46796
+	* lto-lang.c (lto_init): Give names to basic types.
+
+2010-11-30  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-object.c: Don't include toplev.h.
+	* Make-lang.in (lto/lto-object.o): Don't depend on toplev.h.
+
+2010-11-30  Joseph Myers  <joseph@codesourcery.com>
+
+	* Make-lang.in (lto/lto-object.o): Depend on toplev.h instead of
+	$(TOPLEV_H).
+
+2010-11-29  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-endian.h: Delete.
+	* lto-object.c: Don't include "libiberty.h".
+	(O_BINARY): Don't define.
+	* lto.c: Don't include "libiberty.h" or <sys/mman.h>.
+	(O_BINARY): Don't define.
+
+2010-11-23  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (read_cgraph_and_symbols): Remove newline from diagnostic.
+
+2010-11-23  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/46605
+	* lto.c (read_cgraph_and_symbols): Bail out after errors.
+
+2010-11-17  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto.c (lto_main): Take no arguments.
+	* lto.h (lto_main): Update prototype.
+
+2010-11-16  Ian Lance Taylor  <iant@google.com>
+
+	* lto-object.c (lto_obj_file_open): Call
+	simple_object_attributes_merge rather than
+	simple_object_attributes_compare.
+
+2010-11-12  Joseph Myers  <joseph@codesourcery.com>
+
+	* Make-lang.in (lto/lto.o): Use $(OPTS_H).
+	* lto-lang.c (lto_handle_option): Take location_t parameter.
+
+2010-11-10  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto.c (lto_resolution_read): Start diagnostics with lowercase
+	letters and remove trailing '.'.
+	(lto_file_finalize): Start diagnostic with a lowercase letter.
+
+2010-11-02  Ian Lance Taylor  <iant@google.com>
+
+	* lto-object.c: New file.
+	* lto-elf.c: Remove file.
+	* lto-macho.c: Remove file.
+	* lto-macho.h: Remove file.
+	* lto-coff.c: Remove file.
+	* lto-coff.h: Remove file.
+	* Make-lang.in (LTO_OBJS): Change lto/$(LTO_BINARY_READER).o to
+	lto/lto-object.o.
+	($(LTO_EXE)): Remove $(LTO_USE_LIBELF)
+	(lto/lto-objfile.o): New target.
+	(lto/lto-elf.o, lto/lto-coff.o, lto/lto-macho.o): Remove targets.
+	(lto/lto.o): Remove $(LIBIBERTY_H).
+
+2010-10-22  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (add_cgraph_node_to_partition,
+	add_varpool_node_to_partition): Add debug info.
+	(lto_1_to_1_map, lto_balanced_map): Do not re-add already
+	partitioned nodes.
+	(do_whole_program_analysis): Set function flags before dumping.
+
+2010-10-22  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_type): Fixup TYPE_CANONICAL again, via
+	the new gimple_register_canonical_type.
+
+2010-10-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR bootstrap/45954
+	* config-lang.in (boot_language): Set to $enable_lto.
+
+2010-10-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/45638
+	* Make-lang.in (check-lto): New dummy target.
+
+2010-10-14  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* lto-elf.c (SHN_XINDEX): Define if not already defined.
+
+2010-10-08  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-lang.c (lto_init_options): Change to
+	lto_init_options_struct.  Update parameters.
+	(LANG_HOOKS_INIT_OPTIONS): Don't define.
+	(LANG_HOOKS_INIT_OPTIONS_STRUCT): Define.
+
+2010-10-06  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_balanced_map): Fix accounting of program size.
+
+2010-10-06  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_balanced_map): Do not produce empty partitions.
+
+2010-10-06  Andi Kleen  <ak@linux.intel.com>
+
+	* lto.c (lto_process_name): Add.
+	(lto_main): Call lto_process_name.
+
+2010-10-06  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (partition_cgraph_node_p, partition_varpool_node_p): Handle
+	COMDATs required by the linker.
+
+2010-10-05  Ian Lance Taylor  <iant@google.com>
+
+	* lto.c (lto_section_with_id): Make s a const pointer.
+
+2010-10-05  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c:  Include params.h.
+	(add_cgraph_node_to_partition, add_varpool_node_to_partition): Do
+	refcounting in aux field.
+	(undo_partition, partition_cgraph_node_p, partition_varpool_node_p):
+	New functions.
+	(lto_1_to_1_map): Simplify.
+	(lto_balanced_map): New function.
+	(do_whole_program_analysis): Chose proper partitioning alg.
+	* Make-lang.in (lto.o): Add dependency on params.h
+
+2010-10-04  Andi Kleen  <ak@linux.intel.com>
+
+	* Make-lang.in (lto1): Add + to build rule.
+
+2010-10-03  Andi Kleen  <ak@linux.intel.com>
+
+    	* lto.c (lto_file_finalize): Replace gcc_assert for missing section
+          with fatal_error.
+
+2010-09-28  Jan Hubicka  <jh@suse.cz>
+
+	* lto-lang.c (handle_leaf_attribute): New function.
+	(lto_attribute_tables): Add leaf.
+
+2010-09-25  Jie Zhang  <jie@codesourcery.com>
+
+	* lto.c (lto_read_all_file_options): Start a new line after
+	printing out file names.
+
+2010-09-24  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_promote_cross_file_statics): Use const_value_known_p.
+
+2010-09-20  Jan Hubicka  <jh@suse.cz>
+
+	PR tree-optimize/45605
+	* lto.c (lto_promote_cross_file_statics): Use const_value_known_p.
+
+2010-09-18  Gerald Pfeifer  <gerald@pfeifer.com>
+
+	* lto-elf.c (lto_obj_file_open): Also provide filename when
+	elf_begin fails.
+
+2010-09-17  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_promote_cross_file_statics): Use const_value_known.
+
+2010-09-17  Richard Guenther  <rguenther@suse.de>
+
+	* lang.opt (flag_wpa): Also enable for the driver.
+
+2010-09-16  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_function): Do not tamper with STATIC and
+	EXTERNAL flags. 
+
+2010-09-15  Laurynas Biveinis  <laurynas.biveinis@gmail.com>
+
+	* lto-tree.h (struct lang_type): Add variable_size GTY option.
+
+2010-09-08  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (real_file_count, real_file_decl_data): New static vars.
+	(read_cgraph_and_symbols): Use it.
+
+2010-09-08  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (read_cgraph_and_symbols): Collect again after each
+	file.
+
+2010-09-07  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (promote_var, promote_fn): Set DECL_VISIBILITY_SPECIFIED.
+
+2010-09-03  Richard Guenther  <rguenther@suse.de>
+
+	* lto-elf.c (validate_file): Always error if validation fails.
+
+2010-08-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_1_to_1_map): Be prepared for node to have no file data.
+	(lto_wpa_write_files): Update comments.
+
+2010-08-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR bootstrap/45357
+	* lto.c (lto_materialize_function): Replace has_analyzed_clone
+	with has_analyzed_clone_p.
+
+2010-08-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (has_analyzed_clone_p): New function
+	(lto_materialize_function): Use callgraph to determine if
+	body is needed.
+	(materialize_cgraph): Remove DECL_IS_BUILTIN check.
+
+2010-08-20  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c: Use FOR_EACH_VEC_ELT.
+
+2010-07-27  Andi Kleen  <ak@linux.intel.com>
+
+	* Make-lang.in (lto.o): Add dependency to splay-tree.h
+
+2010-07-27  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-lang.c (lto_handle_option): Update prototype and return
+	value type.  Remove duplicate assignment to result.
+
+2010-07-27  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-lang.c (lto_option_lang_mask, lto_complain_wrong_lang_p):
+	New.
+	(lto_init_options): Update prototype.
+	(LANG_HOOKS_OPTION_LANG_MASK, LANG_HOOKS_COMPLAIN_WRONG_LANG_P):
+	Define.
+
+2010-07-10  Andi Kleen  <ak@linux.intel.com>
+
+	PR lto/44992
+        * lto.c: Include splay-tree.h
+	(lto_resolution_read): Change to walk file_ids tree and parse
+	extra file_id in resolution file.
+	(lto_section_with_id): Add.
+	(create_subid_section_table): Add.
+	(lwstate): Add.
+	(lto_create_files_from_ids): Add.
+	(lto_file_read): Change to handle sub file ids and create list
+	of file_datas. Add output argument for count.
+	(get_section_data): Pass file_data to lto_get_section_name.
+	(lto_flatten_file): Add.
+	(read_cgraph_and_symbols): Handle linked lists of file_datas.
+
+2010-07-10  Andi Kleen  <ak@linux.intel.com>
+
+	* lto-coff.c (hash_name, eq_name): Move.
+	(lto_obj_build_section_table): Call lto_obj_create_section_hash_table.
+	* lto-elf.c: (hash_name, eq_name): Move.
+	(lto_obj_build_section_table): Call lto_obj_create_section_hash_table.
+	* lto-macho.c: (hash_name, eq_name): Move.
+	(lto_obj_build_section_table): Call lto_obj_create_section_hash_table.
+	* lto.c: (hash_name, eq_name): Move from lto-*.c
+	(lto_obj_create_section_hash_table): Add.
+	(free_with_string): Add.
+
+2010-07-08  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	* lto-coff.c: Include diagnostic-core.h in every file that
+	includes toplev.h.
+	* lto-elf.c: Likewise.
+	* lto-lang.c: Likewise.
+	* lto-macho.c: Likewise.
+
+2010-07-07  Jakub Jelinek  <jakub@redhat.com>
+
+	* lto-elf.c (ELFOSABI_NONE, ELFOSABI_LINUX): Define if not defined.
+	(validate_file): Allow merging of ELFOSABI_NONE with ELFOSABI_LINUX
+	objects.
+
+2010-07-05  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (add_cgraph_node_to_partition): Forward declare; walk also
+	nodes from same comdat group as well as all comdat functions referenced
+	here.
+	(add_varpool_node_to_partition, add_references_to_partition): New
+	function.
+	(lto_1_1_map): Skip COMDAT fnctions/variables; use
+	add_varpool_node_to_partition; clear aux flags when done.
+	(lto_promote_cross_file_statics): Do not promote stuff that gets
+	duplicated to each ltrans.
+
+2010-07-04  Jan Hubicka  <jh@suse.cz>
+
+        * lto.c (read_cgraph_and_symbols): Dump cgraph before merging.
+
+2010-06-13  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_type): Do not register or fixup TYPE_CANONICAL.
+
+2010-06-09  Kai Tietz  <kai.tietz@onevision.com>
+
+	* lto.c (lto_resolution_read):  Pre-initialize local variable r.
+	* lto-coff.c (coff_write_object_file): Add braces to if.
+
+2010-06-08  Laurynas Biveinis  <laurynas.biveinis@gmail.com>
+
+	* lto.c (lto_read_in_decl_state): Use typed GC allocation.
+	(lto_file_read): Likewise.
+	(new_partition): Likewise.
+	(read_cgraph_and_symbols): Likewise.
+
+2010-06-07  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-lang.c (flag_no_builtin, flag_no_nonansi_builtin): Remove.
+	(lto_handle_option): Don't set flag_signed_char here.
+
+2010-06-04  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41584
+	* lto.c (lto_1_to_1_map): Use the proper file_data for
+	varpool nodes.
+
+2010-05-30  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (promote_var, promote_fn, lto_wpa_write_files): Dump
+	partitioning decisions.
+
+2010-05-29  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (bitmap vector): Remove.
+	(lto_cgraph_node_sets,  lto_varpool_node_sets): Remove.
+	(ltrans_partition_def): New structure.
+	(ltrans_partition): New type and VECtor.
+	(new_partition): New function.
+	(add_cgraph_node_to_partition): New function.
+	(lto_1_to_1_map): Reorganize for partitions.
+	(lto_add_inline_clones): Remove.
+	(lto_add_all_inlinees): Remove.
+	(lto_promote_cross_file_statics): Use partitions.
+	(cmp_partitions): New function.
+	(lto_wpa_write_files): Do not call lto_add_all_inlinees;
+	use partitions; output files sorted by size.
+
+2010-05-29  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* Make-lang.in: Replace vec.h dependency with VEC_H.
+
+2010-05-28  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-coff.c (coff_errmsg): Remove.
+	(lto_coff_begin_section_with_type, lto_obj_append_data): Use %m in
+	errors instead of coff_errmsg (-1).
+	* lto-macho.c (mach_o_errmsg): Remove.
+	(lto_obj_begin_section, lto_obj_append_data): Use %m in errors
+	instead of mach_o_errmsg (-1).
+	* lto.c (read_cgraph_and_symbols): Use %m in errors instead of
+	xstrerror (errno).
+
+2010-05-28  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (prefix_name_with_star): Removed.
+	(strip_extension): Likewise.
+	(get_filename_for_set): Likewise.
+	(lto_write_ltrans_list): Fold into ...
+	(lto_wpa_write_files): ... this.  Name LTRANS units
+	by suffixing the ltrans output list filename.
+	(do_whole_program_analysis): Adjust.
+
+2010-05-27  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto.c: Include diagnostic-core.h instead of diagnostic.h.
+	(read_cgraph_and_symbols, lto_main): Use seen_error.
+	* Make-lang.in (lto/lto.o): Update dependencies.
+
+2010-05-27  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR lto/44230
+	* lto.h (lto_eh_personality): New prototype.
+	* lto.c: Include debug.h.
+	(first_personality_decl): New static variable.
+	(lto_materialize_function): Set it to DECL_FUNCTION_PERSONALITY of the
+	first function for which it is non-null.
+	(lto_eh_personality_decl): New static variable.
+	(lto_eh_personality): New function.
+	* lto-lang.c (LANG_HOOKS_EH_PERSONALITY): Redefine to above function.
+	* Make-lang.in (lto/lto.o): Add dependency on debug.h.
+
+2010-05-26  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* lto-lang.c: Do not include expr.h.
+
+2010-05-24  Richard Guenther  <rguenther@suse.de>
+
+	* lto-elf.c (lto_obj_build_section_table): Work around
+	FreeBSD libelf issue.
+
+2010-05-22  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (read_cgraph_and_symbols): Do not collect.
+
+2010-05-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (promote_var, promote_fn): New functions.
+	(lto_promote_cross_file_statics): Compute correctly boundary including
+	static initializers of readonly vars.
+
+2010-05-18  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_1_to_1_map): Partition non-inline clones.
+	(lto_promote_cross_file_statics): Deal with non-inline clones.
+
+2010-05-18  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_materialize_function): Announce function when
+	reading body; allocate_struct_function only when reading body;
+	do not finalize local statics; ggc_collect after reading;
+	do not mark reachable node.
+	(materialize_cgraph): Do not announce function.
+
+2010-05-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (materialize_cgraph): Revert my previous patch.
+
+2010-05-11  Kai Tietz  <kai.tietz@onevision.com>
+
+	* lto-coff.c (IMAGE_FILE_MACHINE_ADM64): Rename to
+	IMAGE_FILE_MACHINE_AMD64.
+	* lto-coff.c (IMAGE_FILE_MACHINE_ADM64): Likewise.
+
+2010-05-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_fixup_decls): Remove global var decls freeing here.
+	(materialize_cgraph): Add it here.
+
+2010-05-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_fixup_decls): Free no longer needed lto_global_var_decls
+	vector.
+
+2010-05-11  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_1_to_1_map): Remove some no longer needed checks.
+	(lto_promote_cross_file_statics): Never promote DECL_EXTERNAL;
+	use reachable_from_other_partition_p and
+	referenced_from_other_partition_p test.
+
+2010-05-11  Kai Tietz  <kai.tietz@onevision.com>
+
+	* lto-coff.c (validate_file): Add x64-coff support.
+	* lto-coff.h (IMAGE_FILE_MACHINE_ADM64): New.
+	(COFF_KNOWN_MACHINES): Add IMAGE_FILE_MACHINE_ADM64.
+	* lto-lang.c (lto_build_c_type_nodes): Add check for
+	'long long unsigned int' for x64-windows.
+	(lto_init): Likewise.
+
+
+2010-05-07  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* lto.h (struct lto_file_struct): Document offset member.
+	* lto-endian.h: New file.
+	* lto-macho.h: New file.
+	* lto-macho.c: New file.
+	* Make-lang.in: Add rule for lto-macho.o.
+
+2010-05-07  Richard Guenther <rguenther@suse.de>
+
+	PR lto/43857
+	PR lto/43371
+	* lang.opt (fresolution): Change to ...
+	(fresolution=): ... this.
+	* lto-lang.c (lto_handle_option): Adjust.
+
+2010-05-07  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (DUMPBASE_SUFFIX): Remove.
+	(lto_execute_ltrans): Move functionality to lto-wrapper.c.
+	Rename to ...
+	(lto_write_ltrans_list): ... only output the list of ltrans files.
+	(lto_maybe_unlink): Remove.
+	(do_whole_program_analysis): Do not execute LTRANS phase
+	from here.
+
+2010-05-06  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* lto-lang.c (lto_handle_option): Add argument kind.
+
+2010-05-05  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_promote_cross_file_statics): Compute boundary based on
+	refs.
+
+2010-05-05  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_1_to_1_map): Partition only needed nodes.
+
+2010-04-30  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (get_filename_for_set): Look for cgraph node and if none found,
+	use default name.
+	(lto_wpa_write_files): Write any non-empty partition.
+
+2010-04-30  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c: Do not attempt to make constant pool references global.
+
+2010-04-28  Jan Hubicka  <jh@suse.cz>
+
+	* lto/lto.c (lto_read_in_decl_state): Use GGC.
+	(lto_wpa_write_files): Announce what we are writting.
+	(all_file_decl_data): New.
+	(read_cgraph_and_symbols): Use GGC; correct timevars.
+	(do_whole_program_analysis): Collect.
+	* lto/Make-lang.in (lto.o): Fix dependency.
+	* Makefile.in (GTFILES): Add lto-streamer.h.
+	* varpool.c (varpool_analyze_pending_decls): Use TV_VARPOOL.
+	(varpool_assemble_pending_decls): Use VAROUT.
+	* lto-streamer.h (lto_tree_ref_table): Annotate.
+	(lto_in_decl_state): Annotate.
+	(lto_file_decl_data): Annotate.
+
+2010-04-28  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_varpool_node_sets): New.
+	(lto_1_to_1_map): Partition varpool too.
+	(globalize_context_t, globalize_cross_file_statics,
+	lto_scan_statics_in_ref_table, lto_scan_statics_in_cgraph_node,
+	lto_scan_statics_in_remaining_global_vars): Remove.
+	(lto_promote_cross_file_statics): Rewrite.
+	(get_filename_for_set): Take vset argument.
+	(lto_wpa_write_files): Pass around vsets.
+
+2010-04-27  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	PR lto/42776
+	* Make-lang.in (LTO_OBJS): Use LTO_BINARY_READER instead of
+	hardcoding 'lto-elf.o'.
+	($(LTO_EXE)): Use LTO_USE_LIBELF instead of hardcoding '-lelf'.
+
+	* lto-coff.h: New file.
+	* lto-coff.c: Likewise.
+
+2010-04-26  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_type): Deal with non-type TYPE_CONTEXT.
+
+2010-04-26  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	* lto.h (lto_elf_file_open): Rename prototype from this ...
+	(lto_obj_file_open): ... to this.
+	(lto_elf_file_close): Likewise ...
+	(lto_obj_file_close): ... and likewise.
+	(lto_elf_build_section_table): Likewise ...
+	(lto_obj_build_section_table): ... and likewise.
+	(lto_elf_begin_section): Likewise ...
+	(lto_obj_begin_section): ... and likewise.
+	(lto_elf_append_data): Likewise ...
+	(lto_obj_append_data): ... and likewise.
+	(lto_elf_end_section): Likewise ...
+	(lto_obj_end_section): ... and likewise.
+	* lto.c (lto_file_read): Update references to the above.
+	(lto_wpa_write_files): Likewise.
+	(lto_read_all_file_options): Likewise.
+	(read_cgraph_and_symbols): Likewise.
+	* lto-lang.c (LANG_HOOKS_BEGIN_SECTION): Likewise.
+	(LANG_HOOKS_APPEND_DATA): Likewise.
+	(LANG_HOOKS_END_SECTION): Likewise.
+	* lto-elf.c (lto_elf_file_open): Rename from this ...
+	(lto_obj_file_open): ... to this, updating any references.
+	(lto_elf_file_close): Likewise ...
+	(lto_obj_file_close): ... and likewise.
+	(lto_elf_build_section_table): Likewise ...
+	(lto_obj_build_section_table): ... and likewise.
+	(lto_elf_begin_section): Likewise ...
+	(lto_obj_begin_section): ... and likewise.
+	(lto_elf_append_data): Likewise ...
+	(lto_obj_append_data): ... and likewise.
+	(lto_elf_end_section): Likewise ...
+	(lto_obj_end_section): ... and likewise.
+
+2010-04-21  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_fixup_tree): Do not call wpa fixup.
+	(materialize_cgraph): Likewise.
+
+2010-04-21  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_wpa_write_files): Update.
+	(read_cgraph_and_symbols): Be more verbose.
+	(materialize_cgraph): Likewise.
+	(do_whole_program_analysis): Likewise.
+
+2010-04-21  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (globalize_cross_file_statics): When function has address taken,
+	it needs to be public.
+
+2010-04-20  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_add_inline_clones): Do not track inlined_decls.
+	(lto_add_all_inlinees): Likewise.
+	(lto_wpa_write_files): Likewise.
+
+2010-04-18  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* lto-lang.c (lto_init): Remove second argument in call to
+	build_common_tree_nodes.
+
+2010-04-16  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* lto-elf.c [!HAVE_ELF_GETSHDRSTRNDX] (elf_getshdrstrndx): New
+	function.
+
+2010-03-09  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR bootstrap/43276
+	* lto-elf.c: Define EM_* constants if not already defined.
+
+2010-03-03  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* lto-elf.c (is_compatible_architecture): New static function.
+	(DEFINE_VALIDATE_EHDR): Use it to validate the architecture.
+
+2010-02-11  Richard Guenther  <rguenther@suse.de>
+
+	PR driver/43021
+	* lto-elf.c (lto_elf_file_open): Handle file@offset case more
+	appropriately.
+
+2010-01-11  Andy Hutchinson  <hutchinsonandy@gcc.gnu.org>
+
+	* lto.c (O_BINARY): Define.
+	(lto_read_section_data): Open file in binary mode.
+	* lto-elf.c (O_BINARY): Define.
+	(lto_elf_file_open): Open file in binary mode. 
+
+2010-01-08  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/42528
+	* lto-lang.c (lto_handle_option): Handle -f[un]signed-char.
+	(lto_init): Do not init char_type_node in a standard way
+	but according to flag_signed_char.
+
+2010-01-03  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR lto/41564
+	* lto.c (DUMPBASE_SUFFIX): New.
+	(lto_execute_ltrans): Append a sequence number to -dumpbase
+	for LTRANS.
+
+2010-01-02  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR lto/42580
+	* lto-elf.c (lto_elf_file_open): Stop if the command line
+	option file is missing.
+
+2009-12-15  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_field_decl): Fixup DECL_FIELD_OFFSET.
+	(lto_post_options): Do not disable debuginfo.
+
+2009-12-14  Dmitry Gorbachev  <d.g.gorbachev@gmail.com>
+
+	* Make-lang.in ($(LTO_EXE)): Use $(LINKER).
+
+2009-12-11  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/42037
+	* lto.c (lto_resolution_read): Properly grow the vector.
+
+2009-12-11  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41915
+	* lto-lang.c (lto_init_options): Initialize flag_complex_method
+	to the C99 default.  Do not set flag_unit_at_a_time.
+
+2009-11-28  Jakub Jelinek  <jakub@redhat.com>
+
+	* lto-lang.c (handle_nonnull_attribute): Remove unused attr_arg_num
+	variable.
+
+2009-11-19  Rafael Avila de Espindola  <espindola@google.com>
+
+	PR bootstrap/42096
+	* lto-elf.c (lto_elf_file_open): Use lto_parse_hex.
+	* lto.c (lto_parse_hex): New.
+	(lto_resolution_read): Use lto_parse_hex.
+	* lto.h (lto_parse_hex): New.
+
+2009-11-17  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto-elf.c (lto_file_init): Add offset argument.
+	(lto_elf_file_open): Record the offset.
+	* lto.c (lto_resolution_read): Change file_name into a lto_file
+	argument. Check offsets.
+	(lto_file_read): Update call to lto_resolution_read.
+	* lto.h (lto_file_struct): Add the offset field.
+
+2009-11-16  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto-elf.c (lto_elf_file_open): Use strtoll to parse the offset.
+
+2009-11-14  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Set also ipa_transforms_to_apply.
+
+2009-11-12  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lang.opt (fresolution): Renamed from resolution.
+	* lto-lang.c (lto_handle_option): Handle new option name.
+	* lto.c (lto_resolution_read): Add more checks. Discard rest of line.
+
+2009-11-04  Richard Guenther  <rguenther@suse.de>
+            Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto-elf.c (lto_elf_build_section_table): Add the base offset.
+	(lto_elf_file_open): Handle offsets in arguments name@offest.
+
+2009-10-30  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41858
+	* lto.c (lto_file_read): Do not set file_data->fd.
+	(lto_read_section_data): Use a single-entry file-descriptor cache.
+	Do not check the result of xmalloc.
+	(free_section_data): Do not use file_data->fd.
+	(lto_read_all_file_options): Likewise.
+
+2009-10-22  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_jump_functions): Remove.
+	(lto_fixup_decls): Do not fixup jump functions.
+	(read_cgraph_and_symbols): Schedule cgraph merging after
+	summary reading.  Schedule type and decl fixup before
+	summary reading.
+
+2009-10-22  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_data_t): Remove free_list member.
+	(lto_fixup_tree): Do not insert into free_list.
+	(free_decl): Remove.
+	(lto_fixup_decls): Remove free-list handling.
+
+2009-10-22  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_fixup_jump_functions): New function.
+	(lto_fixup_decls): Use it.
+
+2009-10-16  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41715
+	* lto.c (lto_fixup_tree): Revert last change.
+
+2009-10-14  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_fixup_tree): In case the prevailing decl is not
+	compatible with the one we replace wrap it around a
+	VIEW_CONVERT_EXPR.
+
+2009-10-09  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41635
+	PR lto/41636
+	* lto.c (read_cgraph_and_symbols): Do not assert we can open
+	a file.
+	* lto-elf.c (init_shdr##BITS): Fix i18n problems.
+	(init_ehdr##BITS): Likewise.
+
+2009-10-08  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto-elf.c (init_shdr##BITS, lto_elf_begin_section_with_type,
+	init_ehdr##BITS, lto_elf_file_close): Remove trailing "." from
+	diagnostics.
+	* lto-lang.c (lto_post_options): Remove trailing "." from
+	diagnostics.
+
+2009-10-08  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (read_cgraph_and_symbols): Free the gimple type merging
+	hash tables.
+
+2009-10-07  Joseph Myers  <joseph@codesourcery.com>
+
+	* lto.c: Only include <sys/mman.h> if HAVE_MMAP_FILE.
+
+2009-10-07  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (read_cgraph_and_symbols): Mark functions neccesary only at
+	ltrans stage; explain why this is needed and should not.
+
+2009-10-05  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41552
+	PR lto/41487
+	* lto.c (lto_read_decls): Do not register deferred decls.
+	(read_cgraph_and_symbols): Delay symbol and cgraph merging
+	until after reading the IPA summaries.
+
+2009-10-02  Rafael Avila de Espindola  <espindola@google.com>
+
+	* Make-lang.in (lto/lto-lang.o): Don't depend on lto/common.h.
+	(lto-lang.c): Don't include lto/common.h.
+
+2009-10-02  Rafael Avila de Espindola  <espindola@google.com>
+
+	* Make-lang.in (LTO_OBJS): Remove lto/common.o.
+	(lto/common.o): Remove.
+	* common.c: Remove.
+	* common.h (lto_kind_str): Remove.
+	(lto_visibility_str): Remove.
+	(lto_resolution_str): Make it static.
+
+2009-10-01  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_read_decls): Add comment.
+	Call internal_error instead of gcc_assert.
+	(lto_resolution_read): Likewise.
+	(lto_add_all_inlinees): Tidy.
+	* Make-lang.in: Fix copyright boilerplate.
+	(lto.pdf): New.
+	(lto.install-pdf): New.
+	* lto-tree.h: Fix copyright boilerplate.
+	* lang-specs.h: Likewise.
+	Remove ".lto" entry from compilers fragment.
+	* lto-elf.c: Move inclusion of gelf.h after config.h.
+	Tidy formatting everywhere.
+	* lto.h: Fix copyright boilerplate.
+	Tidy formatting everywhere.
+	* common.c: Likewise.
+	* config-lang.in: Likewise.
+	* common.h: Likewise.
+	* lto-lang.c: Likewise.
+
+2009-10-01  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (lto_read_section_data): Use plain lseek/read.
+
+2009-10-01  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (LTO_MMAP_IO): Define if we can mmap files and
+	use sysconf to query the system page size.
+	(lto_file_read): Implement fallback using stdio.
+	(free_section_data): Likewise.
+
+2009-09-29  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_init): Really fix call to
+	build_common_builtin_nodes.
+
+2009-09-29  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_init): Fix call to
+	build_common_builtin_nodes.
+
+2009-09-29  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/40754
+	* lto-elf.c (init_shdr##BITS): Properly specify alignment
+	in bytes.
+	(first_data_block): New static variable.
+	(lto_elf_append_data): Align the first data block in each
+	section.
+
+2009-09-28  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c: Tidy.  Remove stale FIXME lto markers.
+	* lto.c (strip_extension): New.
+	(get_filename_for_set): Call it.  Do not call make_cwd_temp_file.
+	(lto_execute_ltrans): Tidy.
+	Do not pass -fwpa nor -fltrans-* to LTRANS.
+	* opts.c: Tidy formatting and remove stale FIXME lto markers.
+	* tree.c (need_assembler_name_p): Call
+	lang_hooks.decls.may_need_assembler_name_p if set.
+	* varasm.c (default_binds_local_p_1): Remove check for
+	flag_ltrans.
+	* varpool.c (decide_is_variable_needed): Do not test for
+	in_lto_p.
+
+2009-09-22  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/39276
+	* lto.c (lto_execute_ltrans): Perform ltrans phase manually.
+	* Make-lang.in: Remove ltrans-driver stuff.
+	* config-lang.in: Likewise.
+	* lang.opt (fltrans-driver): Remove.
+	* lto-lang.c (lto_init_options): Remove code initializing
+	ltrans_driver.
+	* ltrans-driver: Remove.
+
+2009-09-21  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_define_builtins): Remove superfluous
+	calls to targetm.init_builtins and build_common_builtin_nodes.
+	(lto_init): Add targetm.arm_eabi_unwinder as parameter to
+	build_common_builtin_nodes.
+	* lto.c (lto_materialize_function): Do nothing if NODE is a
+	clone.
+
+2009-09-03  Diego Novillo  <dnovillo@google.com>
+
+	* lto-elf.c (validate_file): Replace call to
+	elf_getshstrndx with call to elf_getshdrstrndx.
+
+2009-08-19  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (lto_init): Merge char_type_node with the
+	appropriately signed variant.
+
+2009-08-19  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41071
+	* lto.c (lto_fixup_common): Re-build the pointer-to chain part one.
+	(lto_fixup_type): Re-build the pointer-to chain part two.
+
+2009-08-19  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41071
+	* lto.c (lto_fixup_type): Re-build the type variant chain.
+
+2009-08-19  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41071
+	* lto.c (lto_fixup_constructor): New function.
+	(lto_fixup_tree): Replace all types.  Properly fixup
+	constructors and constants.
+
+2009-08-14  Richard Guenther  <rguenther@suse.de>
+
+	* lto.c (read_cgraph_and_symbols): Exchange TREE_CHAIN use
+	for DECL_LANG_SPECIFIC.
+
+2009-08-13  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41032
+	* lto-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to NULL.
+
+2009-07-30  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/40903
+	* lto.c (read_cgraph_and_symbols): After fixing up decls choose
+	the largest decl for output and free TREE_CHAIN for further
+	use.
+
+2009-07-24  Diego Novillo  <dnovillo@google.com>
+
+	* Make-lang.in: Add empty lto.install-plugin target.
+
+2009-07-13  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_fixup_tree): Handle IMPORTED_DECL.
+
+2009-07-11  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (lto_write_globals): Wrapup global decls.
+
+2009-07-10  Richard Guenther  <rguenther@suse.de>
+
+	* lto-lang.c (lto_init): Allocate one more location to make
+	BUILTINS_LOCATION correct.
+
+2009-07-09  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* lto.c (free_section_data): Cast computed_offset to caddr_t.
+
+2009-07-06  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_fixup_type): Fixup TYPE_SIZE and
+	TYPE_SIZE_UNIT.
+
+2009-07-06  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (preload_common_nodes): Remove.
+	(lto_read_in_decl_state): Call lto_streamer_cache_get.
+	(lto_read_decls): Call lto_data_in_create and
+	lto_data_in_delete.
+	(free_decl): Do not call ggc_free.
+	(lto_main): Call lto_init_reader.
+	* lto-lang.c (lto_type_for_size): Handle intTI_type_node.
+	(lto_init): Initialize main_identifier_node if needed.
+	Make ptrdiff_type_node be integer_type_node.
+
+2009-06-19  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c: Remove code guarded by #ifdef LTO_STREAM_DEBUGGING.
+	Remove code guarded by #ifdef GLOBAL_STREAMER_TRACE.
+	Remove code guarded by #ifdef LOCAL_TRACE.
+
+2009-06-18  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c: Update license to GPLv3.
+	* lto-elf.c: Likewise.
+	* common.c: Likewise.
+	* lto-lang.c: Likewise.
+	* lto.h: Remove superfluous include files.  Update all
+	users.
+
+2009-06-17  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (read_cgraph_and_symbols): Call input_cgraph.
+
+2009-06-02  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_1_to_1_map): Ignore nodes that have not been
+	read in.
+	(materialize_cgraph): Only materialize nodes that have a
+	representation on file.
+
+2009-06-01  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_handle_option): Hanlde OPT_Wabi.
+
+2009-05-31  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_type_for_mode): Handle all the modes
+	handled in c_common_type_for_mode.
+
+2009-05-21  Diego Novillo  <dnovillo@google.com>
+
+	* lto-elf.c: Always include <gelf.h>.
+	* config-lang.in (target_libs): Remove.
+	(build_by_default): Set to no.
+
+2009-05-15  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_materialize_function): Assert that DECL is
+	not a builtin.
+	(materialize_cgraph): Don't try to materialize builtin
+	functions.
+	* lto-section-out.c (write_symbol_vec): Do not write
+	builtin functions.
+
+2009-05-13  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (LANG_HOOKS_GET_ALIAS_SET): Define.
+
+2009-05-07  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_resolution_read): Add type casts for C++ warnings.
+	(LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE): Define.
+	(lto_fixup_type): Call it for TYPE_POINTER_TO,
+	TYPE_REFERENCE_TO, TYPE_CONTEXT and TYPE_CANONICAL.
+	(lto_fixup_tree): Call gimple_register_type when *TP is a
+	type.
+	(lto_main): Call bitmap_obstack_initialize.
+
+2009-04-22  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (free_section_data): Tidy.
+	(lto_1_to_1_map): Tidy.
+	(lto_add_all_inlinees): Tidy.
+	(prefix_name_with_star): New.
+	(get_filename_for_set): New.
+	(lto_wpa_write_files): Call cgraph_node_set_needs_ltrans_p
+	to determine what cgraph node sets to write.
+	Call get_filename_for_set to compute temporary file
+	names.
+	(lto_execute_ltrans): Do not execute LTRANS on files with
+	names that start with '*'.
+	Move logic to execute LTRANS together so that LTRANS is
+	invoked only if there are any files to compile.
+	(do_whole_program_analysis): Only remove output files
+	that do not start with '*'.
+
+2009-04-06  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_post_options): Set flag_excess_precision_cmdline.
+	* lto.c (read_cgraph_and_symbols): Set cgraph_function_flags_ready.
+	(lto_add_all_inlinees): Tidy.
+
+2009-03-26  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c: Include gimple.h.
+	(lto_read_in_decl_state): Call gimple_register_type for
+	every type in every stream.
+	(lto_fixup_common): Call gimple_register_type if T has a
+	type.
+	(do_whole_program_analysis): Call print_lto_report.
+	(lto_main): Call print_lto_report after cgraph_optimize.
+	* Make-lang.in (lto.o): Add dependency on GIMPLE_H.
+
+2009-03-24  Diego Novillo  <dnovillo@google.com>
+
+	* Make-lang.in (lto-lang.o): Add dependency on TARGET_H and EXPR_H.
+	(lto.o): Add dependency on GIMPLE_H.
+
+2009-03-10  Simon Baldwin  <simonb@google.com>
+
+	* lto.c (lto_read_all_file_options): Close any open file descriptor
+	contained in file_data before freeing.
+
+2009-02-24  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto.c (lto_add_inline_clones): Don't add the master clone. Check
+	for a decl in the original bitmap, not a node.
+	(lto_add_all_inlinees): Remove original nodes that are not needed.
+	(lto_scan_statics_in_cgraph_node): Don't care if the node is the master.
+
+2009-02-24  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_materialize_function): Update
+	lto_stats.num_function_bodies.
+	(get_section_data): Initialize *LEN to 0.
+	(lto_1_to_1_map): Update lto_stats.num_cgraph_partitions.
+	(lto_wpa_write_files): Update lto_stats.num_cgraph_nodes.
+	Update lto_stats.num_output_files.
+	(read_cgraph_and_symbols): Update lto_stats.num_input_files.
+	(materialize_cgraph): Update lto_stats.num_input_cgraph_nodes.
+	(lto_main): Initialize lto_stats.
+	If flag_lto_report is set, call print_lto_report.
+
+2009-02-19  Diego Novillo  <dnovillo@google.com>
+
+	Revert
+
+	2009-02-19  Rafael Avila de Espindola  <espindola@google.com>
+
+		* lto.c (lto_add_inline_clones): Don't add the
+		master clone. Check for a decl in the original
+		bitmap, not a node.
+		(lto_add_all_inlinees): Remove original nodes
+		that are not needed.
+		(lto_scan_statics_in_cgraph_node): Don't care if
+		the node is the master.
+		(lto_promote_cross_file_statics): Use a new
+		context.seen_node_decls for each set
+
+2009-02-19  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto.c (lto_add_inline_clones): Don't add the master clone. Check
+	for a decl in the original bitmap, not a node.
+	(lto_add_all_inlinees): Remove original nodes that are not needed.
+	(lto_scan_statics_in_cgraph_node): Don't care if the node is the master.
+	(lto_promote_cross_file_statics): Use a new context.seen_node_decls
+	for each set
+
+2009-02-18  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_wpa_write_files): Use timers TV_WHOPR_WPA
+	and TV_WHOPR_WPA_IO.
+	(lto_execute_ltrans): Use timer TV_WHOPR_WPA_LTRANS_EXEC.
+	(read_cgraph_and_symbols): Use timer TV_IPA_LTO_DECL_IO.
+	(materialize_cgraph): Use timer TV_IPA_LTO_GIMPLE_IO.
+	Use timer TV_WHOPR_WPA or TV_WHOPR_LTRANS or TV_LTO
+	depending on command line flags.
+	(do_whole_program_analysis): Use timer TV_WHOPR_WPA.
+	(lto_main): Remove timer uses.
+
+2009-02-18  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto.c (lto_materialize_function): Don't set DECL_EXTERN to 0.
+	(lto_wpa_write_files): Update calls to renamed functions.
+
+2009-02-17  Diego Novillo  <dnovillo@google.com>
+
+	PR 39203
+	* lto-lang.c (lto_post_options): Disable -fwhole-program
+	when running LTRANS.
+
+2009-02-10  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (read_cgraph_and_symbols): Fix comment.
+
+2009-02-10  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (read_cgraph_and_symbols): Read options from all
+	IL files.
+
+2009-02-10  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (read_cgraph_and_symbols): Factor out of lto_main.
+	(materialize_cgraph): Likewise.
+	(do_whole_program_analysis): Likewise.
+	(lto_main): Call read_cgraph_and_symbols,
+	materialize_cgraph and do_whole_program_analysis.
+
+2009-02-10  Simon Baldwin  <simonb@google.com>
+
+	* lto.c: Include lto-opts.h.
+	* (lto_main): Clear file options at loop start, read any saved
+	options from the first file handled, and re-issue options.
+	* Makefile.in (lto.o): Add dependency on lto-opts.h.
+
+2009-02-02  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_main): Stop LTO_TIMER and use
+	TV_WHOPR_WPA_LTRANS_EXEC when launching LTRANS.
+
+2009-01-30  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR lto/38995
+	* lto-elf.c (init_shdr##BITS): Set the sh_addralign field
+	to POINTER_SIZE.
+
+2009-01-29  Ramana Radhakrishnan  <ramana.r@gmail.com>
+
+	* Make-lang.in (LTO_EXE): Link with all 
+	BACKENDLIBS and not only GMPLIBS
+
+2009-01-28  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR bootstrap/38992
+	* lto-elf.c: Include gelf.h instead of libelf.h.
+	(lto_elf_file_close): Replace elfx_update_shstrndx with
+	gelf_getehdr, elf_getscn, gelf_getshdr, gelf_update_shdr and
+	gelf_update_ehdr.
+
+2009-01-28  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR middle-end/38996
+	* lto-elf.c (DEFINE_INIT_EHDR): Initialize e_version.
+
+2009-01-26  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Update.
+
+2009-01-26  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_types_compatible_p): Move to gimple.c
+	and rename into gimple_types_compatible_p.
+
+2009-01-12  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto-lang.c (lang_hooks): Remove the const qualifier.
+
+2009-01-06  Diego Novillo  <dnovillo@google.com>
+
+	* ltrans-driver: Mark 'all' target as phony.
+
+2008-12-31  Diego Novillo  <dnovillo@google.com>
+
+	* ltrans-driver: Execute a NOP action for target 'all'.
+
+2008-12-19  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_1_to_1_map): Tidy.
+
+2008-12-19  Diego Novillo  <dnovillo@google.com>
+
+	* lto-elf.c (lto_elf_file_open): When FILENAME cannot
+	be opened, show its name.
+	* ltrans-driver: If $verbose is set, do not use parallelism.
+
+2008-12-17  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto.c (lto_fixup_function): New.
+	(lto_fixup_tree): Call lto_fixup_function.
+
+2008-12-14  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_1_to_1_map): Create a cgraph node set for any global
+	variables if there is no function.
+
+2008-12-10  Simon Baldwin  <simonb@google.com>
+
+	* ltrans-driver: Always run make in silent mode, to avoid make's
+	trace on stdout interfering with lto-wrapper output.
+
+2008-12-10  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c	(lto_add_inline_clones): Do not force master clones of
+	inlined functions already in SET to be static inline.
+
+2008-12-04  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (globalize_context_t): New type to store states in
+	globalization of cross-file statics.
+	(globalize_cross_file_statics): New.
+	(lto_scan_statics_in_ref_table): Walk tree to look for reachable
+	static decls that need to be fixed up.
+	(lto_scan_statics_in_cgraph_node): Change call interface to use
+	a globalize_context_t CONTEXT for all states used.
+	(lto_scan_statics_in_remaining_global_vars): New.
+	(lto_promote_cross_file_statics): Use new call interface of
+	LTO_SCAN_STATICS_IN_CGRAPH_NODE.  Handle remaining externally
+	visible vars in the last set.
+
+2008-12-03  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_fixup_tree): Do not emit an error when
+	PREVAILING throw but T doesn't.
+
+2008-12-02  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_scan_statics_in_ref_table): New function factored out
+	from code in ...
+	(lto_scan_statics_in_cgraph_node): Handle both file-scope static
+	variables and functions.
+	(lto_promote_cross_file_statics): Rename bitmaps to SEEN_DECLS
+	and GLOBAL_DECLS from SEEN_VARS and GLOBAL_VARS.
+
+2008-11-29  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c: Include timevar.h.
+	(lto_materialize_function): Tidy.  Add comments.
+	(lto_wpa_write_files): Tidy.
+	(lto_execute_ltrans): Tidy.
+	(lto_main): Add local variable LTO_TIMER.  Initialize it
+	to one of TV_WHOPR_WPA, TV_WHOPR_LTRANS or TV_LTO.
+	Start and stop the timer.
+	Tidy comments.
+	* Make-lang.in (lto.o): Add dependency on timevar.h.
+	* ltrans-driver: React to -v and -save-temps.
+	Use simple heuristic to determine how much parallelism to
+	use when executing make.
+
+2008-11-12  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_bitmap_obstack): Remove var.
+	(lto_materialize_function): Do nothing instead of marking function
+	body in file if flag_wpa is true.
+	(lto_add_all_inlinees): Use bitmap functions in lto-utils.c.
+	(lto_scan_statics_in_cgraph_node): New function.
+	(lto_promote_cross_file_statics): Same.
+	(lto_wpa_write_files): Call lto_promote_cross_file_statics.
+	Use bitmap functions in lto-utils.c.  Remove unsued label OUT.
+	* Make-lang.in (lto/lto.o): Add lto-utils.h to dependency list.
+
+2008-11-09  Diego Novillo  <dnovillo@google.com>
+
+	* lto/lto.c (lto_fixup_tree): Change error message locus
+	information to include location of mismatching
+	declaration.
+	Use TREE_NO_WARNING to avoid repeated messages.
+	(lto_main): If lto_fixup_decls emitted any errors, exit.
+	* lto/lto-lang.c: Don't include libfuncs.h and except.h
+	(lto_init_options): Don't enable exceptions by default.
+	(lto_eh_runtime_type): Move to lto-function-in.c
+	(lto_init_eh): Likewise.
+	(lto_init): Don't call lto_init_eh.
+	* lto/Make-lang.in (lto-lang.o): Remove dependency on
+	libfuncs.h and except.h.
+
+2008-10-30  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_read_decls): Declare debug_main only if
+	LTO_STREAM_DEBUGGING is enabled.
+
+2008-10-30  Simon Baldwin  <simonb@google.com>
+
+	* lto.c (lto_wpa_write_files): Create intermediate files with
+	make_cwd_temp_file().
+	(lto_maybe_unlink): New.  Delete intermediate WPA files unless
+	WPA_SAVE_LTRANS is set.
+	(lto_main): Call lto_maybe_unlink() for intermediate WPA files.
+	* ltrans-driver: Do not strip directory from output files.
+
+2008-10-29  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (free_decl): Call lto_symtab_clear_resolution when freeing
+	DECL.
+	* Make-lang.in (LTO_OBJS): Remove lto/lto-symtab.o
+	(lto/lto-symtab.o): Remove rule.
+	* lto-tree.h (struct lang_identifier): Remove LTO specific fields.
+	(struct lang_decl): Remove RESOLUTION and add DUMMY in struct.
+	(LANG_IDENTIFIER_CAST, LTO_IDENTIFIER_DECL, LTO_DECL_RESOLUTION):
+	Remove macros.
+	lto-symtab.c (File): Move up one level.
+	lto-lang.c (cgraph.h): Remove include.
+	(input_overwrite_node, input_node, input_edge, input_cgraph_1,
+	input_cgraph): Move to lto-cgraph.c in gcc directory above.
+	(LANG_HOOKS_INPUT_CGRAPH): Remove use of macro.
+
+2008-10-24 Rafael Espindola  <espindola@google.com>
+
+	* lto-function-in.c (get_resolution): Return LDPR_PREEMPTED_IR for
+	non prevailing weak symbols.
+
+2008-10-24 Rafael Espindola  <espindola@google.com>
+
+	* lto-lang.c (input_cgraph_1): Iterate over nodes, not cgraph_nodes.
+
+2008-10-24 Rafael Espindola  <espindola@google.com>
+
+	* lto-lang.c (input_node): Avoid casts from pointers to ints of
+	different types.
+
+2008-10-23  Simon Baldwin  <simonb@google.com>
+
+	* lto-lang.c (input_node): Save the node reference, rather than the
+	node pointer, in node->inlined_to.
+	(input_cgraph_1): Convert node references into node pointers.
+
+2008-10-22  Diego Novillo  <dnovillo@google.com>
+	    Rafael Espindola  <espindola@google.com>
+
+	* lto.c (lto_resolution_read): Tidy.
+	* lto-symtab.c (lto_symtab_prevailing_decl): Do not
+	abort if RET is NULL.
+
+2008-10-22  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_fixup_tree): Check for NOTHROW conflict only if
+	exceptions flag is given.
+	* lto-lang.c: (lto_init_options) Set default exceptions flag.
+	(lto_init_eh): Remove exceptions flag initialization.
+	(lto_init): Only call lto_init_eh if exceptions flag is set. 
+
+2008-10-21  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c: Tidy some formatting.
+	* lto.h: Likewise.
+
+2008-10-21  Simon Baldwin  <simonb@google.com>
+
+	* lto-symtab.c: (lto_same_type_p): Types cannot be equal if one of
+	them is NULL (but not the other).
+
+2008-10-17  Diego Novillo  <dnovillo@google.com>
+
+	* ltrans-driver: Divert output from make to a temporary file.
+	Show it if the call to make failed.
+
+2008-10-15  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_wpa_write_files): Reformat do-while loop.
+	Do not print TEMP_FILENAME
+	* ltrans-driver: Call make with -s.
+
+2008-10-15  Diego Novillo  <dnovillo@google.com>
+
+	* lto-symtab.c (lto_symtab_merge_decl): Do not force
+	TREE_STATIC on global symbols.
+
+2008-10-14  Ollie Wild  <aaw@google.com>
+
+	* Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): Remove.
+	(LTRANS_DRIVER_EXE): Add.
+	(lto.all.cross): Add LTRANS_DRIVER_EXE.
+	(lto.all.encap): Add LTRANS_DRIVER_EXE.
+	(lto.install.common): Remove ltrans-driver.
+	(lto.mostlyclean): Add LTRANS_DRIVER_EXE.
+	(LTRANS_DRIVER_EXE): New build rule.
+	* config-lang.in (compilers): Add ltrans-driver.
+
+2008-10-14  Diego Novillo  <dnovillo@google.com>
+
+	* Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): Disable transformation
+	of program name.
+
+2008-10-13  Ollie Wild  <aaw@google.com>
+
+	* lang-spec.h (@lto): Replace lto1_options with cc1_options.
+	* lto.c (lto_execute_ltrans): Add "-fno-wpa -fltrans -xlto" to CFLAGS.
+	* ltrans-driver (LTRANS_FLAGS): Remove.
+
+2008-10-08  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_fixup_tree): Remove ATTRIBUTE_UNUSED from DATA.
+	Handle new tree codes RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
+	and TREE_BINFO.  Also move code handling FUNCTION_DECL and VAR_DECL
+	from lto_fixup_state to here.
+	(lto_fixup_state): Take an lto_fixup_data_t object DATA instead of
+	just a free-list.  Fix up types also.  Move decl merging code to
+	lto_fixup_tree.
+	(lto_fixup_state_aux): Change AUX to point to an lto_fixup_data_t
+	object.
+	(lto_fixup_decls): Use another pointer set to avoid multiple
+	walking of nodes except for DECLs to be replaced.  Pass an
+	lto_fixup_data_t object to tree-walker.
+
+2008-10-08 Rafael Espindola  <espindola@google.com>
+
+	* lto-symtab.c (lto_symtab_set_resolution): New.
+	(lto_symtab_merge_decl): Use lto_symtab_set_resolution and
+	lto_symtab_get_resolution.
+	(lto_symtab_prevailing_decl): Return decl for non public decls.
+	(lto_symtab_get_resolution): New.
+	* lto.c (lto_fixup_tree, lto_fixup_state): Remove unecessary checks.
+
+2008-10-06 Rafael Espindola  <espindola@google.com>
+
+	* lto-lang.c: Include cgraph.h.
+	(input_overwrite_node, input_node, input_edge, input_cgraph_1,
+	input_cgraph): Moved from lto-cgraph.c.
+	(LANG_HOOKS_INPUT_CGRAPH): New.
+
+2008-10-03 Rafael Espindola  <espindola@google.com>
+
+	* lto.c (lto_fixup_tree, lto_fixup_state): Fix the FIXME.
+
+2008-10-03 Rafael Espindola  <espindola@google.com>
+
+	* lto-symtab.c (lto_symtab_overwrite_decl): Remove. Remove all calls.
+	(lto_symtab_merge_decl): Update  LTO_IDENTIFIER_DECL the reflect the
+	prevailing definition. Don't mark TREE_NOTHROW differences.
+	* lto.c (lto_fixup_tree): New.
+	(lto_fixup_state): New.
+	(lto_fixup_state_aux): New.
+	(free_decl): New.
+	(lto_fixup_decls): New.
+	(lto_main): Call lto_fixup_decls.
+
+2008-10-02  Ollie Wild  <aaw@google.com>
+
+	* lang.opt (fltrans): Moved from common.opt.  Remove RejectNegative
+	and Init.
+	(fwpa): Moved from common.opt.  Remove RejectNegative and Init.
+	* lto-lang.c (lto_post_options): Add validation and fixups for
+	-fltrans and -fwpa.
+
+2008-10-02 Rafael Espindola  <espindola@google.com>
+
+	* lto-symtab.c (lto_symtab_merge_var, lto_symtab_merge_fn,
+	lto_symtab_merge_decl): Return void.
+	(lto_symtab_prevailing_decl): New.
+
+2008-09-30 Rafael Espindola  <espindola@google.com>
+
+	* lto-symtab.c (lto_symtab_compatible): Remove the check for already
+	defined symbols.
+	(lto_symtab_overwrite_decl): Copy LTO_DECL_RESOLUTION.
+	(lto_symtab_merge_decl): Store symbol resolution in LTO_DECL_RESOLUTION.
+	Check for already defined symbols.
+	* lto-tree.h (lang_decl): Remove dummy and add resolution fields.
+	(LTO_IDENTIFIER_RESOLUTION): Remove.
+	(LTO_DECL_RESOLUTION): New.
+
+2008-09-30 Rafael Espindola  <espindola@google.com>
+
+	* lto.c (lto_read_decls): Use new input_tree signature.
+
+2008-09-26  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_main): Call lto_fixup_nothrow_decls to fix up function
+	bodies affected by exception attribute merging of DECLs.
+	* lto-symtab.c (lto_symtab_merge_decl): Handle exception attribute
+	merging. 
+
+2008-09-25  Rafael Espindola  <espindola@google.com>
+
+	* Make-lang.in (PLUGIN_API_H, LTO_TREE_H): New.
+	(lto/lto-lang.o, lto/lto.o, lto/lto-symtab.o) Use LTO_TREE_H.
+	* lto-symtab.c (lto_symtab_compatible): New.
+	(lto_symtab_overwrite_decl): New.
+	(lto_symtab_merge_decl): Refactor to use the above functions
+	and the resolution from lang_identifier.
+	* lto-tree.h: Include plugin-api.h.
+	(lang_identifier): Add resolution.
+	(LTO_IDENTIFIER_RESOLUTION): New.
+
+2008-09-25  Ollie Wild  <aaw@google.com>
+
+	* lang.opt (fltrans-output-list=): New option.
+	* lto.c (lto_execute_ltrans): Output file names to ltrans_output_list.
+
+2008-09-25 Rafael Espindola  <espindola@google.com>
+
+	* lto.c (lto_resolution_read): Initialize ret;
+
+2008-09-24  Ollie Wild  <aaw@google.com>
+
+	* lto.c (sys/mman.h): Move include.
+	(lto_wpa_write_files): Return a list of written files.
+	(lto_execute_ltrans): New function.
+	(lto_main): Call lto_execute_ltrans.
+	(ltrans-driver): New file.
+	* lto-lang.c (DEFAULT_LTRANS_DRIVER): New macro.
+	(DEAULT_LTRANS_DRIVER_LEN): New macro.
+	(lto_init_options): Initialize ltrans_driver.
+	(lto_handle_option): Fix incorrect default output value.
+	* lang.opt (fltrans-driver=): New option.
+	* Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): New variable.
+	(lto.install-common): Add lto/ltrans-driver.
+
+2008-09-24 Rafael Espindola  <espindola@google.com>
+
+	* Make-lang.in (LTO_OBJS): Add lto/common.o.
+	(lto/lto.o): Depend on lto/common.h.
+	(lto/common.o): New.
+	* lang.opt (resolution): New.
+	* lto-lang.c (resolution_file_name): New.
+	(lto_handle_option): Handle OPT_resolution.
+	* lto-symtab.c (lto_symtab_merge_decl): Add a resolution argument.
+	(lto_symtab_merge_var,lto_symtab_merge_fn): Add a resolution argument.
+	pass it to lto_symtab_merge_decl.
+	* lto.c: Include common.h.
+	(lto_read_decls): Add resolutions and resolutions_size arguments.
+	Initialize data_in.globals_resolution and
+	data_in.globals_resolution_size.
+	(index_and_symbol_resolution): New.
+	(lto_resolution_read): New.
+	(lto_file_read): Add argument resolution_file.
+	Read resolution.
+	* lto.h (resolution_file_name): New.
+
+2008-09-23 Rafael Espindola  <espindola@google.com>
+
+	* common.c: Update description.
+	* common.h: Update description.
+
+2008-09-23 Rafael Espindola  <espindola@google.com>
+
+	* common.c: Moved from lto-plugin.
+	* common.h: Moved from lto-plugin.
+
+2008-09-22  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c	(VEC(bitmap,heap)): Declare.
+	(lto_materialize_function): Handle WAP mode specially.
+	(lto_add_inline_clones): New.
+	(lto_add_all_inlinees): Changle algorithm and to use bitmaps.  Also
+	return a bitmap of inlined decls.
+	(lto_wpa_write_files): Handle all DECLs brought in by inlining.
+	(lto_main): Call reset_inline_failed to reset inlining states.
+    	Check call-graph after WPA inlining.
+	* lto-lang.c (lto_init): Do not clear flag_generate_lto
+	unconditionally.
+
+2008-09-19  Doug Kwan  <dougkwan@google.com>
+
+	lto.c (lto_main): Remove unsued wrapper code.
+	lang-specs.h (@lto): Use lto1_options instead of cc1_options.
+
+2008-09-19  Rafael Espindola  <espindola@google.com>
+
+	* lto-symtab.c: Include lto-tree-in.h.
+	* lto-tree.h (lto_symtab_merge_var, lto_symtab_merge_fn): Remove.
+	* lto.h (lto_symtab_merge_var, lto_symtab_merge_fn): Remove
+	* Make-lang.in (lto/lto-symtab.o): Add lto-tree-in.h.
+
+2008-09-17  Paolo Bonzini  <bonzini@gnu.org>
+	    Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto-lang.c (COMPOUND_LITERAL_EXPR_DECL_STMT,
+	COMPOUND_LITERAL_EXPR_DECL): Remove.
+	(emit_local_var): Remove.
+	(lto_expand_expr): Remove.
+	(lto_staticp): Remove.
+	(LANG_HOOKS_EXPAND_EXPR): Remove.
+	(LANG_HOOKS_STATICP): Remove.
+
+2008-09-11  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c: Include except.h and libfuncs.h.
+	(lto_init_eh): New.
+	(lto_init): Call it.
+	Set flag_generate_lto to 0.
+	* Make-lang.in (lto-lang.o): Add dependency on except.h
+	and libfuncs.h.
+
+2008-09-09  Bill Maddox  <maddox@google.com>
+
+	* lto-lang.c: Include header file expr.h.
+	(COMPOUND_LITERAL_EXPR_DECL_STMT,
+	COMPOUND_LITERAL_EXPR_DECL): Copied from c-common.h.
+	(emit_local_var):  Copied from c-semantics.c.
+	(lto_expand_expr, lto_staticp): Copied from c_expand_expr
+	and c_staticp in c-common.c.
+	(LANG_HOOKS_EXPAND_EXPR,LANG_HOOKS_STATICP):  Redefined.
+
+2008-09-08  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (lto_global_bindings_p): Return 1 during
+	IPA passes.
+
+2008-09-07  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c: Tidy formatting.
+
+2008-08-04  Bill Maddox  <maddox@google.com>
+
+	* lto-symtab.c (lto_symtab_merge_decl): Add comment.
+	
+2008-09-03  Doug Kwan  <dougkwan@google.com>
+
+	lto.c (lto_add_all_inlinees): Reset FAILED_REASON of edges to
+	CIF_OK instead of NULL.
+
+2008-09-02  Diego Novillo  <dnovillo@google.com>
+	    Simon Baldwin  <simonb@google.com>
+
+	* lto-lang.c (lto_type_for_size): Rewrite.  Adapt from
+	c_common_type_for_size.
+	(lto_type_for_mode): Remove ATTRIBUTE_UNUSED markers.
+	(lto_init): Call linemap_add.
+	(signed_and_unsigned_types): Remove.
+
+2008-08-29  Diego Novillo  <dnovillo@google.com>
+
+	* lto-lang.c (handle_noreturn_attribute): New local function.
+	(handle_const_attribute): New local function.
+	(handle_malloc_attribute): New local function.
+	(handle_pure_attribute): New local function.
+	(handle_novops_attribute): New local function.
+	(handle_nonnull_attribute): New local function.
+	(handle_nothrow_attribute): New local function.
+	(handle_sentinel_attribute): New local function.
+	(handle_type_generic_attribute): New local function.
+	(handle_format_attribute): New local function.
+	(handle_format_arg_attribute): New local function.
+	(lto_attribute_table): Declare.
+	(lto_format_attribute_table): Declare.
+	(lto_init_attributes): New local function.
+	(lto_define_builtins): Call it.
+	Call targetm.init_builtins and build_common_builtin_nodes.
+	(LANG_HOOKS_COMMON_ATTRIBUTE_TABLE): Define.
+	(LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE): Define.
+
+2008-08-28  Diego Novillo  <dnovillo@google.com>
+
+	* Make-lang.in (lto-lang.o): Replace tree-gimple.h with
+	$(GIMPLE_H).
+	(lto-symtab.o): Add dependency on $(GIMPLE_H).
+	* lto-lang.c: Include gimple.h instead of tree-gimple.h.
+	* lto-symtab.c: Include gimple.h.
+	* lto-tree.h (chain_next): Replace GENERIC_NEXT with
+	TREE_CHAIN.
+
+2008-08-27  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (vec.h, bitmap.h, pointer-set.h, ipa-prop.h, ggc.h,
+	gt-lto-lto.h): New includes.
+	(lto_materialize_function): Do not read in function body in WPA mode.
+	Format a line to fit in 80 columns.
+	(lto_cgraph_node_sets): New garbage collected variable.
+	(lto_1_to_1_map, lto_add_all_inlinees, lto_wpa_write_files):
+	New functions.
+	(lto_main): Initialize bitmap obstack.  Add code to handle WPA mode.
+	* Make-lang.in (LTO_H): Replace filename lto-section-in.h with 
+	variable LTO_SECTION_IN_H.
+	(lto/lto.o): Include gt-lto-lto-c.h ggc.h ,VEC_H, BITMAP_H,
+	pointer-set.h and IPA_PROP_H. Also replace filename lto-section-in.h
+	with variable LTO_SECTION_IN_H.
+	* config-lang.in (gtfiles): Add lto/lto.c.
+	* lto-symtab.c (lto_symtab_merge_decl): Set DECL_CONTEXT of
+	merged DECL_RESULT correctly.
+
+2008-08-26  Bill Maddox  <maddox@google.com>
+
+	* lto-lang.c  Include tree-gimple.h.
+	(lto_mark_addressable): Call mark_addressable rather than
+	asserting.
+	(lto_post_options): Suppress debug info generation.
+	* Make-lang.in: Add dependency of lto-lang.o on tree-gimple.h.
+	
+2008-08-25  Bill Maddox <maddox@google.com>
+
+	* lto-symtab.c (lto_symtab_merge_decl): Remove a suspect
+	assertion and leave an explanatory comment in its place.
+	
+2008-08-21  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (preload_common_nodes): Call lto_get_common_nodes to get a list
+	of common nodes instead of computing locallly.
+	(lto_read_in_decl_state): New.
+	(lto_read_decls): Change code for udpate in struct lto_decl_header.
+	Read global and per-function in-decl states.
+	* Make-lang.in (LTO_H): Update dependency.
+	(lto/lto.o): Same.
+	(lto-symtab.c): Merge	(revision 139039)
+	* lto-symtab.c (lto_symtab_merge_decl): Merge DECL_RESULT.
+
+2008-08-21  Rafael Espindola  <espindola@google.com>
+
+	* config-lang.in (target_libs): New.
+
+2008-08-20  Bill Maddox  <maddox@google.com>
+
+	* lto.c (current_lto_file): Remove GTY marker from static
+	variable.  Remove include of file gt-lto-lto.h.
+	* Make-lang.in: Remove dependency of lto/lto.o on
+	gt-lto-lto.h.
+	* lto-elf.c (lto_file_close): Removed.
+	(lto_elf_file_open): Use XCNEW instead of GGC_CNEW to
+	allocate lto_elf_file object.
+	(lto_elf_file_close): Free lto_elf_file object after close.
+	* lto.h (struct lto_file_struct): Remove GTY marker.
+	* config-lang.in: Remove lto/lto.h and lto/lto.c from
+	gtfiles.
+	
+2008-08-20  Bill Maddox  <maddox@google.com>
+
+	* lto.c (lto_read_decls): Provide dummy argument to input_tree
+	to conform to its new signature.
+	* lto-symtab.c (lto_symtab_merge_decl): Do not invoke ggc_free
+	on discarded node here, now called in global_vector_fixup.
+	
+2008-08-09  Bill Maddox  <maddox@google.com>
+
+	* lto.c (preload_common_nodes): Verify that fileptr_type_node
+	has not been set to a front-end-specific value.
+	
+2008-08-05  Doug Kwan  <dougkwan@google.com>
+	
+	* Make-lang.in (lto-symtab.o): Add missing dependencies to fix
+	build breakage.
+
+2008-07-30  Bill Maddox  <maddox@google.com>
+
+	* lto.c (lto_materialize_function): Call lto_original_decl_name.
+	Remove obsolete comments.
+	(lto_read_decls): Remove initialization of deleted field data_in.global.
+	Tidy up comments.
+	(lto_main): Remove redundant initialization of section_hash_table.
+	* lto-elf.c: Removed obsolete comments.
+	* lto.h: Tidy up comments.
+	* lto-symtab.c (lto_least_common_multiple): New function.
+	(lto_symtab_merge_decl): Merge variable alignments in some cases.
+	Tidy up comments.
+
+2008-07-25  Diego Novillo  <dnovillo@google.com>
+	    Bill Maddox  <maddox@google.com>
+
+	* lto.c: Re-order include files.
+	Include lto-section-out.h.
+	(preload_common_nodes): Add debugging output.
+	Add new local INDEX_TABLE.
+	Call preload_common_node.
+	* Make-lang.in (lto.o): Add dependency on lto-section-out.h
+
+2008-07-13  Bill Maddox  <maddox@google.com>
+
+	* lto.c (lto_read_decls): Cast pointer to const char * to avoid
+	unwanted scaling during pointer addition.
+
+2008-07-11  Bill Maddox  <maddox@google.com>
+	    Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_read_decls): Fix C++ compatibility warnings.
+	Make code const-correct.
+	(lto_file_read): Fix C++ compatibility warnings.
+	(lto_read_section_data):  Fix C++ compatibility warnings.
+	(lto_get_section_data): Use CONST_CAST to avoid warning when
+	const pointer passed to free.
+	* lto-elf.c (lto_elf_build_section_table): Fix C++
+	compatibility warnings.
+	(lto_elf_append_data):  Fix C++ compatibility warnings.  Use CONST_CAST
+	to avoid warning assigning const pointer to d_buf field of Elf_Data.
+	(lto_get_current_out_file):  Fix C++ compatibility warnings.
+
+2008-07-11  Diego Novillo  <dnovillo@google.com>
+
+	* Make-lang.in (lto-warn): Define.
+
+2008-07-03  Simon Baldwin  <simonb@google.com>
+
+	* lto.c (lto_read_decls): Wrapped debug-only data items within #ifdef
+	LTO_STREAM_DEBUGGING.
+
+2008-06-27  Ollie Wild  <aaw@google.com>
+
+	* lto-elf.c (lto-section-out.h): New include.
+	(struct lto_elf_file): Remove bits member.  Add scn, shstrtab_stream,
+	and data members.
+	(cached_file_attrs): New static variable.
+	(lto_elf_get_shdr, lto_elf_free_shdr): Remove elf_file parameter.
+	Use cached_file_attrs for checking bits.
+	(lto_elf_build_section_table): Remove elf_file argument from
+	lto_elf_get_shdr and lto_elf_free_shdr calls.
+	(DEFINE_INIT_SHDR): New macro.
+	(init_shdr32, init_shdr64): New functions defined via the
+	DEFINE_INIT_SHDR macro.
+	(lto_elf_begin_section_with_type): New function.
+	(lto_elf_begin_section): New function.
+	(lto_elf_append_data): New function.
+	(lto_elf_end_section): New function.
+	(DEFINE_VALIDATE_EHDR): New macro.
+	(validate_ehdr32, validate_ehdr64): New functions defined via the
+	DEFINE_VALIDATE_EHDR macro.
+	(validate_file): New function.
+	(DEFINE_INIT_EHDR): New macro.
+	(init_ehdr32, init_ehdr64): New functions defined via the
+	DEFINE_INIT_EHDR macro.
+	(init_ehdr): New function.
+	(lto_elf_file_open): Add support for writable files.  Move some
+	validation logic to validate_file.
+	(lto_elf_file_close): Add support for writable files.  Write file data
+	and free data blocks.
+	(current_out_file): New static variable.
+	(lto_set_current_out_file): New function.
+	(lto_get_current_out_file): New function.
+	* lto.c (lto_main): Add writable argument to lto_elf_file_open calls.
+	Add temporary initialization for testing ELF serialization.
+	* lto.h (lto-section-out.h): New include.
+	(struct lto_file_struct): Slight modification to comment.
+	(lto_elf_file_open): Add writable parameter.
+	(lto_elf_begin_section): New function declaration.
+	(lto_elf_append_data): New function declaration.
+	(lto_elf_end_section): New function declaration.
+	(lto_set_current_out_file, lto_get_current_out_file): New function
+	declarations.
+	* lto-lang.c (LANG_HOOKS_BEGIN_SECTION): Set as lto_elf_begin_section.
+	(LANG_HOOKS_APPEND_DATA): Set as lto_elf_append_data.
+	(LANG_HOOKS_END_SECTION): Set as lto_elf_end_section.
+	* Make-lang.in (LTO_H): Add lto-section-out.h.
+
+2008-06-12  Ollie Wild  <aaw@google.com>
+
+	* lto.h (struct lto_file_vtable_struct): Remove.
+	(struct lto_file_struct): Remove vtable member.
+	* lto-elf.c (lto_file_init): Remove vtable argument.
+	(lto_elf_map_optional_lto_section): Remove.
+	(lto_elf_unmap_section): Remove.
+	(lto_elf_file_vtable): Remove.
+	(lto_elf_file_open): Remove lto_elf_file_vtable argument from
+	lto_file_init call.
+	(lto_elf_find_section_data): Remove.
+
+2008-06-11  Ollie Wild  <aaw@google.com>
+
+	* lto.c (lto_file_read): Add const qualifier to data variable.
+
+2008-06-11  Diego Novillo  <dnovillo@google.com>
+
+	Merge from lto-streamber sub-branch.
+
+	2008-06-04  Ollie Wild  <aaw@google.com>
+
+		* lto.c: Remove inclusion of dwarf2.h and dwarf2out.h.
+		* Make-lang.in (lto.o): Remove dependency on dwarf2.h.
+
+	2008-05-28  Bill Maddox  <maddox@google.com>
+
+		Replace the DWARF reader in the LTO front-end.
+
+		* lto.c: Include lto-tree-in.h, lto-tags.h.
+		(enum DWARF2_class, DW_cl_constant, struct
+		DWARF2_form_data, struct lto_context,
+		lto_fd_init, lto_info_fd_init,
+		lto_abbrev_fd_init, lto_info_fd_close,
+		lto_file_init, lto_file_close,
+		lto_file_corrupt_error, lto_abi_mismatch_error,
+		LTO_CHECK_INT_VAL, LTO_READ_TYPE,
+		lto_read_uleb128, lto_read_sleb128,
+		lto_read_initial_length, lto_abbrev_read_attrs,
+		lto_abbrev_read, lto_abbrev_read_lookup,
+		lto_read_section_offset,
+		lto_read_comp_unit_header, find_cu_for_offset,
+		lto_get_file_name,
+		lto_resolve_reference,lto_read_form,
+		attribute_value_as_int,
+		make_signed_host_wide_int,
+		attribute_value_as_constant, lto_cache_hash,
+		lto_cache_eq, lto_cache_store_DIE,
+		lto_cache_lookup_DIE, lto_find_integral_type,
+		lto_find_integral_type_1,
+		LTO_BEGIN_READ_ATTRS_UNCHECKED,
+		LTO_BEGIN_READ_ATTRS, LTO_END_READ_ATTRS,
+		lto_unsupported_attr_error, lto_get_identifier,
+		lto_read_referenced_type_DIE,
+		lto_read_compile_unit_DIE,
+		lto_read_array_type_DIE,
+		lto_read_structure_union_class_type_DIE,
+		lto_read_enumerator_DIE,
+		lto_read_enumeration_type_DIE,
+		lto_read_only_for_child_DIEs,
+		lto_read_only_for_child_DIEs,
+		lto_read_member_DIE, lto_read_abbrev,
+		lto_read_variable_formal_parameter_constant_DIE,
+		lto_get_body): Removed.
+		(preload_common_nodes): New function.
+		(lto_read_decls): Convert for new global streamer.
+		(lto_materialze_file_data,
+		lto_read_subroutine_type_subprogram_die,
+		lto_read_unspecified_parameters_DIE,
+		lto_read_typedef_DIE,
+		lto_read_pointer_reference_type_DIE,
+		lto_read_subrange_type_DIE,
+		lto_read_base_type_DIE,
+		lto_read_const_volatile_restrict_type_DIE,
+		lto_read_namespace_DIE,
+		lto_read_unspecified_type_DIE, lto_read_DIE,
+		lto_read_child_DIEs, lto_collect_child_DIEs):
+		Removed.
+		(lto_info_read, lto_set_cu_context): Removed.
+		(lto_file_read): Convert for new global streamer.
+		(lto_resolve_type_ref, lto_read_DIE_at_ptr,
+		lto_resolve_var_ref, lto_resolve_fn_ref,
+		lto_resolve_field_ref, lto_resolve_typedecl_ref,
+		lto_resolve_namespacedecl_ref): Removed.
+		(lto_file_init, lto_file_close): Moved to lto-elf.c.
+		* lto-tree.h (lto_symtab_merge_var,
+		lto_symtab_mergee_fun): Declare here.
+		* lto-elf.c (lto_file_init, lto_file_close): Moved from lto.c.
+		(lto_elf_file_open): Removed code to read DWARF debug sections.
+		* lto.h (lto_context, DWARF2_attr, DWARF2_abbrev,
+		DWARF2_CompUnit, lto_die_ptr,
+		lto_die_cache_entry, lto_fd, lto_info_fd,
+		lto_abbrev_fd): Removed.
+		(lto_file): Removed debug_info and debug_abbrev fields.
+		(lto_ref): Removed.
+		(lto_file_init, lto_file_close,
+		lto_resolve_type_ref, lto_resolve_var_ref,
+		lto_resolve_fn_ref, lto_resolve_field_ref,
+		lto_resolve_typedecl_ref,
+		lto_resolve_namespacedecl_ref,
+		lto_get_file_name): Removed declarations.
+		(lto_symtab_merge_var, lto_symtab_merge_fn):
+		Declarations moved to lto-tree.h.
+		* lto-symtab.c (lto_compatible_attributes_p):
+		Lobotomize this, as it barfs on "Hello, world!".
+		* lto-section-out.c: Include lto-tree-out.h.
+		(lto_hash_global_slot_node,
+		lto_eq_global_slot_node, preload_common_nodes,
+		write_global_stream, write_global_references):
+		New functions.
+		(produce_asm_for_decls): Convert for new global streamer.
+		* lto-section-out.h (lto_hash_global_slot_node,
+		lto_eq_global_slot_node): Declare.
+
+2008-06-07  Kenneth Zadeck <zadeck@naturalbridge.com>
+	    Jan Hubicka  <jh@suse.cz>
+	
+	* lto.c (sys/mman.h, tree-pass.h): New includes.
+	(lto_materialize_constructors_and_inits,
+	lto_materialize_function): Keeps length of section.
+	(lto_materialize_cgraph): Removed.
+	(lto_read_decls): Initialize fd field.
+	(lto_file_read): Different return type and removed much code to
+	lto_main.
+	(page_mask): New variable.
+	(lto_read_section_data, get_section_data, free_section_data): New
+	functions.
+	(lto_main): Now calls pass manager, sets the hooks so that the ipa
+	passes can get the section data. 
+	
+2008-05-27  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto.h (lto_read_decls): Made local.
+	(lto_input_function_body, lto_input_constructors_and_inits, 
+	lto_input_cgraph): Declarations moved to lto-section-in.h.
+	* lto-section-in.c: Moved to .. .
+	* lto-cgraph-in.c: Ditto.
+	* lto-section-in.h: Ditto.
+	* lto-function-in.c: Ditto.
+	* lto-lang.c (lto_handle_option): Added ATTRIBUTE_UNUSED to parms.
+	(lto_insert_block): Removed.
+	(LANG_HOOKS_INSERT_BLOCK): Removed.
+	* Make-lang.in (lto-cgraph-in.o, lto-function-in.o,
+	lto-section-in.o): Rules moved to lto/Makefile.in.
+	
+
+2008-05-16  Ollie Wild  <aaw@google.com>
+
+	* lto-lang.c (tree-inline.h): Include.
+	(lto_post_options): New function.
+	(LANG_HOOKS_POST_OPTIONS): Define.
+	* lto-cgraph-in.c (overwrite_node): Set node->global.insns.
+	* lto-function-in.c (input_bb): Set TREE_BLOCK (stmt).
+
+2008-05-13  Diego Novillo  <dnovillo@google.com>
+
+	* lto-function-in.c (input_ssa_names): Call
+	make_ssa_name_fn instead of make_ssa_name.
+
+2008-05-12  Diego Novillo  <dnovillo@google.com>
+
+	* lto-cgraph-in.c (overwrite_node): Update references to
+	inline summary fields.
+	* lto-function-in.c (input_expr_operand): Do not handle
+	STRUCT_FIELD_TAG.
+
+2008-05-09  Ollie Wild  <aaw@google.com>
+
+	* lang.opt: New file.
+	* lto-lang.c (lto_init_options): New function.
+	(lto_handle_option): New function.
+	(lto_init): Move initialization of flag_unit_at_a_time to
+	lto_init_options.
+	(LANG_HOOKS_INIT_OPTIONS): Define.
+	(LANG_HOOKS_HANDLE_OPTION): Define.
+
+2008-04-29  Ollie Wild  <aaw@google.com>
+
+	* lto.c (lto_read_namespace_DIE): New function.
+	(lto_read_DIE): Add lto_read_namespace_DIE callback.  Cache
+	NAMESPACE_DECL DIE's.
+	(lto_resolve_namespacedecl_ref): New function.
+	* lto.h (lto_resolve_namespacedecl_ref): New function.
+	* lto-section-in.c (lto_read_decls): Read namespace declarations.
+	* lto-section-in.h (struct lto_file_decl_data): Add namespace_decls
+	and num_namespace_decls.
+	* lto-function-in.c (input_expr_operand): Add NAMESPACE_DECL case.
+	* lto-lang.c (lto_init_ts): New function.
+	(LANG_HOOKS_INIT_TS): Set as lto_init_ts.
+
+2008-04-16  Ollie Wild  <aaw@google.com>
+
+	* lto-function-in.c (input_type_ref): Updated function description.
+
+2008-04-16  Ollie Wild  <aaw@google.com>
+
+	* lto-function-in.c (input_type_ref_1): New function.
+	(input_type_ref): Split into two functions.
+	(input_function): Add support for type contexts.
+
+2008-04-16  Ollie Wild  <aaw@google.com>
+
+	* lto.c (lto_materialize_function): Use DECL_ASSEMBLER_NAME to compute
+	section name
+
+2008-04-16  Ollie Wild  <aaw@google.com>
+
+	* lto.c (lto_read_compile_unit_DIE): Add DW_LANG_C_plus_plus to the
+	list of supported languages.
+
+2008-03-25  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	Merge with mainline @133491.
+
+2008-03-05  Kenneth Zadeck <zadeck@naturalbridge.com>
+	    Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_info_fd_init, lto_info_fd_close): Get rid of
+	fd->unmaterialized_fndecls.
+	(lto_get_file_name, lto_materialize_cgraph): New function.
+	(lto_materialize_constructors_and_inits,
+	lto_materialize_function): Read info directly from elf file.
+	(lto_file_read): Made local and initialize dictionary so that
+	other lto sections can be read without reprocessing the elf file.
+	(lto_main): Read all functions after all files have been processed
+	for their types, globals and cgraph.  
+	* Make-lang.in (lto.o, lto-cgraph-in.c, lto-section-in): Changed
+	dependencies.
+	* lto-elf.c (lto_elf_file): Removed strtab, symtab fields.
+	(hash_name, eq_name, lto_elf_build_section_table): New functions.
+	(lto_elf_read_symtab): Removed function.
+	(lto_elf_file_open): Removed call to lto_elf_read_symtab.
+	* lto.h (lto_info_fd_struct): Removed unmaterialized_fndecls.
+	(lto_file_read): Made local.
+	(lto_get_file_name, lto_elf_build_section_table,
+	lto_input_cgraph): 
+	New function.
+	* lto-section-in.c (lto_read_section_data, lto_get_section_data):
+	New functions.
+	(lto_read_decls): Get the file name.
+	* lto-cgraph-in.c: New file.
+	* lto-function-in.c (tag_to_expr): Stops at LTO_tree_last_tag.
+	(input_expr_operand, lto_read_body): Set lto_debug_context.tag_names.
+	(input_labels): Fixed latent sizeof issue.
+	(input_function): Build stmt array to set call sites into cgraph
+	edges.
+	(lto_read_body): Reset cfun->curr_properties.
+	* lto_section_in.h (lto_section_slot): New structure.
+	(section_hash_table.lto_file_decl_data): New field.
+
+	
+2008-02-09  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto.c (lto_read_variable_formal_parameter_const): Remove code to
+	reconstruct static initializers.
+	(lto_get_body, lto_materialize_function): Add lto_section_type as
+	a parameter.
+	(lto_materialize_constructors_and_inits,
+	lto_materialize_file_data): New function.
+	(lto_materialize_function,
+	lto_read_subroutine_type_subprogram_DIE): Renamed unmap_fn_body to
+	unmap_section and map_fn_body to map_section.
+	(lto_set_cu_context): Process functions and static inits
+	differently.
+	* Make-lang.in (LTO_H, lto/lto-function-in.o,
+	lto/lto-section-in.o): Update dependencies.
+	* lto/lto-elf.c (lto_elf_map_optional_lto_section): Add
+	lto_section_type parameter.
+	(lto_elf_unmap_fn_body): Renamed to lto_elf_unmap_section.
+	* lto.h (lto_file_vtable_struct): Removed two of the fields and 
+	renamed the other two so that there is only one map function and
+	one unmap function and each takes a section type parameter.
+	(lto_read_function_body): Renamed to lto_input_function_body and
+	added file_data parameter.
+	(lto_read_var_init): Removed.
+	(lto_input_constructors_and_inits): New function.
+	* lto-section-in.c (lto_read_decls): New function.
+	* lto-function-in.c (data_in): Moved fields field_decls, fn_decls,
+	var_decls, type_decls, types to lto_file_decl_data.
+	(input_type_ref, input_expr_operand, lto_read_body): Get
+	field_decls, fn_decls, var_decls, type_decls, types from different
+	structure.
+	(input_globals, input_constructor, lto_read_var_init): Removed.
+	(input_constructors_or_inits): New function.
+	(lto_read_function_body, lto_input_constructors_and_inits):
+	Renamed to lto_input_function_body and takes file_data parameter.
+	* lto-section-in.h (lto_file_decl_data): New structure.
+	
+2008-01-28  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-function-in.c (input_globals.c): Changed input type to
+	lto_function_header.
+	(input_bb): Removed code to deserialize the stmt number.
+	(input_function): Renumber all stmts after they are input.
+	(lto_read_body, lto_read_function_body, lto_read_var_init):
+	Changed to used new header format and enum section_type.
+	*lto-lang.c (success): Removed. 
+	
+2008-01-28  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-elf.c (lto_elf_lookup_sym): Remove unused function.
+	(lto_elf_free_sym): Likewise.
+
+	* lto-elf.c (lto_elf_read_var_init): Remove unused function.
+	(lto_elf_build_init): Likewise.
+
+2008-01-14  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c: Renamed to lto-function-in.c.
+	(input_1_unsigned): Moved to lto-section-in.c and renamed
+	lto_input_1_unsigned.
+	(input_uleb128): Moved to lto-section-in.c and renamed
+	lto_input_uleb128.
+	(input_widest_uint_uleb128): Moved to lto-section-in.c and renamed
+	lto_input_widest_uint_uleb128.
+	(input_sleb128): Moved to lto-section-in.c and renamed
+	lto_input_sleb128.
+	(input_integer): Moved to lto-section-in.c and renamed
+	lto_input_integer.
+	(debug_in_fun): Moved to lto-section-in.c and renamed
+	lto_debug_in_fun.
+	(input_block): Moved to lto-section-in.h and renamed
+	lto_input_block.
+	(input_expr_operand): Fixed to allow lists with more than one
+	element.
+	* lto-section-in.h: New file.
+	* lto-section-in.c: New file with changes from above.
+	* Make-lang.in (lto-read.o): Renamed lto-function-in.c.
+	(lto-section-in.o): New rule.
+	
+2007-12-29  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_expr_operand): Mark static and external
+	VAR_DECLs as needed.
+
+2007-12-29  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_integer): Use the correct shift amount.
+
+2007-12-29  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (lto_pushdecl): Do nothing instead of aborting.
+	(LANG_HOOKS_NAME): Define.
+
+2007-12-27  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_find_integral_type): Define as a macro.  Rename the
+	original function to...
+	(lto_find_integral_type_1): ...this.  Consult UNSIGNEDP if we
+	don't have a base type.
+	(lto_read_enumeration_type_DIE): Examine the values of the
+	enumeration to determine whether we can use an unsigned type for
+	the base type of the enumeration.
+
+2007-12-24  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_structure_union_class_type_DIE): Set TYPE_MODE
+	and TYPE_ALIGN on UNION_TYPEs as soon as possible.
+
+2007-12-22  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (lto_types_compatible_p): New function.
+	(LANG_HOOKS_TYPES_COMPATIBLE_P): Define.
+
+2007-12-22  Nathan Froyd  <froydnj@codesourcery.com>
+	    Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Fixed uninitialize var warning.
+	(input_local_vars): Read in DECL_INITIAL and context for local
+	statics that need to be put in unexpanded_vars_list.
+
+2007-12-21  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_real): Use a separate null-terminated buffer
+	for calling real_from_string.
+	(input_expr_operand): If we take the address of a FUNCTION_DECL,
+	tell cgraph that it's needed.
+
+2007-12-19  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_read_base_type_DIE): Handle complex integer types.
+
+2007-12-18  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_DIE): Call lto_read_only_for_child_DIEs instead.
+	(lto_file_read): Reset the members of 'context' every time we read
+	a toplevel DIE, with special attention to last_param_type.
+
+2007-12-18  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_subroutine_type_subprogram_DIE): Initialize
+	'declaration'.  Set the assembler name for non-public functions.
+
+2007-12-17  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto_read.c (data_in.unexpanded_indexes): New array.
+	(input_local_var): Added code to read in unexpanded_var_list
+	indexes for variables.  Only read in DECL_CHAIN field for
+	parameters.
+	(input_local_vars): Added code to rebuild unexpanded_var_list in
+	order using unexpanded_indexes.
+	(input_function): Added code to set DECL_CONTEXT for functions.
+
+2007-12-13  Doug Kwan  <dougkwan@google.com>
+
+	* lto.c (lto_read_pointer_reference_type_DIE): Handle optional name
+	in pointer and reference types.
+
+2007-12-13  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_expr_operand): Use DECL_RESULT when reading a
+	RESULT_DECL.
+
+2007-12-13  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_array_type_DIE): Return the cached DIE if we've
+	already read the DIE.
+	(lto_get_body): New function, split out from...
+	(lto_materialize_function): ...here.  Call it.
+	(lto_read_subroutine_type_subprogram_DIE): Call lto_get_body to
+	determine DECL_EXTERNAL.
+	* lto-symtab.c (lto_symtab_merge_decl): Merge the DECL_RESULTs of
+	FUNCTION_DECLs when necessary.  Use the type of the actual
+	function definition if we are unable to easily merge types.  Ignore
+	spurious DECL_MODE mismatches on VAR_DECLs.  Merge DECL_MODEs when
+	necessary.
+
+2007-12-13  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS): Define.
+
+2007-12-12  Bill Maddox  <maddox@google.com>
+
+	Revert
+	2007-12-07  Bill Maddox  <maddox@google.com>
+
+	* lto.c (lto_str_fd_init): New function.
+	(lto_str_fd_close): New function.
+	(lto_file_init): Call lto_str_fd_init.
+	(lto_file_close): Call lto_str_fd_close.
+	(lto_str_read): New function. Read debug string table.
+	(lto_str_lookup): New function. Get string for debug
+	string table offset.
+	(lto_read_form): Recognize DW_FORM_strp.
+	(lto_file_read): Invoke lto_str_read.
+
+	* lto-elf.c (lto_elf_file_open): Read raw section data
+	for the .debug_str section, if present.
+
+	* lto.h (struct lto_str_fd_struct): New struct.
+	(struct lto_file_struct): Added new field DEBUG_STR
+	to hold the file descriptor for the debug string table.
+	
+2007-12-07  Bill Maddox  <maddox@google.com>
+
+	* lto.c (lto_str_fd_init): New function.
+	(lto_str_fd_close): New function.
+	(lto_file_init): Call lto_str_fd_init.
+	(lto_file_close): Call lto_str_fd_close.
+	(lto_str_read): New function. Read debug string table.
+	(lto_str_lookup): New function. Get string for debug
+	string table offset.
+	(lto_read_form): Recognize DW_FORM_strp.
+	(lto_file_read): Invoke lto_str_read.
+
+	* lto-elf.c (lto_elf_file_open): Read raw section data
+	for the .debug_str section, if present.
+
+	* lto.h (struct lto_str_fd_struct): New struct.
+	(struct lto_file_struct): Added new field DEBUG_STR
+	to hold the file descriptor for the debug string table.
+
+2007-12-07  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_cfg): Call init_empty_tree_cfg_for_function.
+	Grow the basic_block_info and label_to_block_map vectors if
+	necessary.  Read in the block chain.
+
+2007-12-06  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_DIE): Set TYPE_ALIAS_SET where necessary.
+
+2007-12-06  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_form): Add DW_cl_address for DW_AT_const_value.
+
+2007-12-06  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_expr_operand): Don't check for MTAGs.
+	(lto_read_body): Don't declare PROP_alias.
+
+2007-12-06  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-symtab.c (lto_symtab_merge_decl): Handle FUNCTION_DECLs without
+	argument type information.
+
+2007-12-03  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Set
+	TREE_THIS_VOLATILE if the associated type is a volatile type.
+	(lto_materialize_function): Remove call to init_ssa_operands.
+	* lto-read.c (input_expr_operand): Add SSA_NAME_VAR as a referenced
+	variable when reading an SSA_NAME.  Do the same when reading a
+	RESULT_DECL, a RETURN_EXPR, or an MTAG.
+	(input_cfg): Call init_ssa_operands.
+	(input_ssa_names): Set the default def of an SSA_NAME if necessary.
+	Move call to init_tree_ssa...
+	(lto_read_body): ...here.  Use push_cfun and pop_cfun.  Call
+	add_referenced_var on any variables referenced from the body of the
+	function.  Inform the rest of the compiler we are in SSA form and
+	inform later passes about the current properties.
+
+2007-11-30  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_materialize_function): Add FIXME.
+
+2007-11-29  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (enum built_in_attribute): New enum.
+	(flag_no_builtin, flag_no_nonansi_builtin, flag_isoc94, flag_isoc99,
+	built_in_attributes): New variables.
+	(def_builtin_1): New function.
+	(lto_define_builtins): #define DEF_BUILTIN and include builtins.def.
+
+2007-11-28  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Set
+	DECL_SOURCE_LOCATION for debugging purposes.
+	(lto_read_member_DIE): Set DECL_SOURCE_LOCATION.  If we have read a
+	bitfield, use the type specified by the DIE for TREE_TYPE and defer
+	laying out the decl until later.
+	(lto_read_subroutine_type_subprogram_DIE): Compare the function's
+	name with DECL_ASSEMBLER_NAME.  Set DECL_SOURCE_LOCATION and
+	TREE_ADDRESSABLE.
+	* lto-read.c (input_expr_operand): Set TREE_ADDRESSABLE on the
+	operand of an ADDR_EXPR.
+	* lto-lang.c (enum lto_builtin_type): New enum.
+	(builtin_type): New typedef.
+	(builtin_types, string_type_node, const_string_type_node,
+	wint_type_node, intmax_type_node, uintmax_type_node,
+	signed_size_type_node): New variables.
+	(def_fn_type, builtin_type_for_size, lto_define_builtins,
+	lto_build_c_type_nodes): New functions.
+	(lto_init): Initialize builtin types.
+	(lto_set_decl_assembler_name): Let the target machine mangle the
+	name if the decl is TREE_PUBLIC, otherwise uniquify it.
+
+2007-11-21  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Don't
+	set TREE_ADDRESSABLE.  Do set DECL_COMDAT.  Set TREE_READONLY if
+	the type is a constant type.  Set the assembler name and inform
+	the rest of the compiler about the new decl if the decl is not
+	public.
+	(lto_read_subroutine_type_subprogram_DIE): Don't check for equivalency
+	of DECL_ASSEMBLER_NAME when determining if we have a builtin.  Don't
+	try to read in function bodies for functions that already have bodies.
+	* lto-symtab.c (lto_same_type_p): Check for unbounded array
+	equivalency.
+	(lto_symtab_merge_decl): Don't merge decls that aren't TREE_PUBLIC.
+	Check for whether we matched a builtin function type before calling
+	lto_same_type_p on the generated type.  Permit cases where the
+	declaration of an array is unbounded, but the definition is bounded.
+	Don't combine TREE_PUBLIC flags.  Copy over DECL_SIZE and
+	DECL_SIZE_UNIT if necessary.
+
+2007-11-16  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Get types right 
+	for COMPLEX_CST.
+
+2007-11-16  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (make_new_block, input_cfg): Properly set
+	n_basic_blocks.
+	
+2007-11-16  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_array_type_DIE): Handle DIEs with DW_AT_GNU_vector
+	set properly by building a VECTOR_TYPE instead of an ARRAY_TYPE.
+
+2007-11-16  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_base_type_DIE): Use make_bitfield_integer_type to
+	construct the integer type for bitfields.
+
+2007-11-16  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (data_in.current_node_has_loc): Removed.
+	(input_line_info): Returns true if node needs line set.
+	(set_line_info): Always sets line if called.
+	(clear_line_info): Removed reference to current_node_needs_loc.
+	(input_expr_operand): Keeps track locally if current node needs a loc.
+	(input_local_var): Added code to handle DECL_INITIAL for
+	static local vars. Only set loc if necessary.
+	
+2007-11-15  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_subroutine_type_subprogram_DIE): Fix thinko'd
+	DECL_CONTEXT.
+
+2007-11-15  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c: Include langhooks.h.
+	(lto_find_integral_type): Rework logic to handle the case where
+	got_byte_size is true, but the bitsize requested and that of the
+	base_type doesn't match.
+	(lto_read_variable_formal_parameter_constant_DIE): Only check for
+	asm_name if we are creating a VAR_DECL.
+	(lto_materialize_function): Set DECL_EXTERNAL if we can't find a
+	definition.
+	(lto_read_subroutine_type_subprogram_DIE): Check for a builtin
+	function reference and use the builtin's decl if so.  Set the
+	DECL_CONTEXT of the RESULT_DECL for the function.
+	* lto-lang.c (registered_builtin_fndecls): New variable.
+	(lto_getdecls): Return it.
+	(lto_builtin_function): Chain the new decl onto
+	registered_builtin_fndecls.
+
+2007-11-15  Kenneth Zadeck <zadeck@naturalbridge.com>
+	    
+	* lto-read.c (process_tree_flags, lto_static_init_local):
+	Renamed to ADD_CLASS_EXPR_FLAG. ADD_CLASS_DECL_FLAG New Macro.
+	(input_line_info, clear_line_info): Fixed new line number code.
+	(input_expr_operand): Added type to SWITCH_EXPR.
+	(lto_read_body): Properly initialized data_in.
+	Clear line info when leaving.
+	
+2007-11-13  Diego Novillo  <dnovillo@google.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE):
+	Initialize ARTIFICIAL.
+	(lto_read_subroutine_type_subprogram_DIE): Initialize
+	SAVED_SCOPE.
+	* lto-read.c (set_line_info): Remove ; from calls to
+	LINEMAP_POSITION_FOR_COLUMN.
+
+2007-11-13  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_type_ref): Renamed from get_type_ref.
+	(input_expr_operand, input_local_var): Renamed get_type_ref to 
+	input_type_ref.
+	(input_expr_operand): Get the types correct for 
+	vector-cst.  Get SSA_NAME_DEF_STMT correct for return_exprs.
+	
+2007-11-13  Doug Kwan  <dougkwan@google.com>
+
+	* lto-read.c (input_widest_uint_uleb128): New function.
+	(input_tree_flags, process_tree_flags, input_line_info,
+	input_expr_operand, input_local_var, input_phi, input_ssa_names):
+	Change to use lto_flags_type and BITS_PER_LTO_FLAGS_TYPES instead of
+	unsigned HOST_WIDE_INT and HOST_BITS_PER_WIDE_INT.
+	(lto_static_init_local): Add code to assert that lto_flags_type is
+	wide enough.
+
+2007-11-13  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_array_type_DIE): Handle DW_AT_GNU_vector.
+	(lto_read_subroutine_type_subprogram_DIE): Handle
+	DW_AT_static_link and DW_AT_specification.  Return the
+	specification if present.
+	(lto_read_base_type_DIE): Handle DW_ATE_complex_float.
+	
+2007-11-13  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c: Include target.h.
+	(registered_builtin_types): New variable.
+	(lto_type_for_mode): Increase number of modes handled.
+	(lto_builtin_function): Fix argument list and return the decl.
+	(lto_register_builtin_type): New function.
+	(lto_init): Initialize target builtins and language-independent
+	nodes.
+	(LANG_HOOKS_REGISTER_BUILTIN_TYPE): Define.
+
+2007-11-13  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Added code to properly handle
+	index filed. Added new RANGE_EXPR case.
+	
+2007-11-11  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (ADD_FUNC_FLAG): Deleted macro.
+	(data_in): Added current_node_has_loc field.
+	(input_line_info, set_line_info, clear_line_info): Added a support
+	for USE_MAPPED_LOCATION and not adding line numbers to nodes that
+	did not have on on the source side.
+	(input_expr_operand): Make sure that GIMPLE_MODIFY_STMTS get line
+	numbers too.
+
+2007-11-09  Doug Kwan  <dougkwan@google.com>
+
+	* lto-read.c (input_expr_operand): Change type of operand 2 of
+	BIT_FIELD_REF expression to be bitsizetype instead of sizetype.
+
+2007-11-09  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c: Include lto-tree.h.  Effect small spaces->tabs cleanup.
+	(lto_read_variable_formal_parameter_constant_DIE): Transfer bits
+	from a DW_AT_specification or DW_AT_abstract_origin attribute to
+	the new decl we are creating.  Move informing the middle end about
+	the new decl to...
+	(lto_main): ...here.  Inform the middle end about global variables
+	after we have read in all the input files.
+	* lto-symtab.c (lto_symtab_merge_decl): We really do need to merge
+	variables with internal linkage, so delete the check for internal
+	linkage.  Combine TREE_PUBLIC flags.
+
+2007-11-08  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_subroutine_type_subprogram_DIE): Handle
+	DW_AT_decl_line.
+	* lto-symtab.c (lto_symtab_merge_decl): Handle redefinition of a
+	builtin specially.  Move check for attribute compatibility
+	earlier.
+
+2007-11-07  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* Make-lang.in (lto/lto.o): Depend on gt-lto-lto.h.
+	* config-lang.in (gtfiles): Add lto.h and lto.c.
+	* lto-elf.c: Include ggc.h.
+	(lto_elf_file_open): Allocate elf_file from GC memory.
+	* lto.c: Include tree-ssa-operands.h and gt-lto-lto.h
+	(lto_info_fd_init): Allocate the die_cache and unmaterialized_fndecls
+	in GC memory.
+	(lto_info_fd_close): Free unmaterialized_fndecls from GC memory.
+	(lto_file_close): Free file from GC memory.
+	(lto_cache_store_DIE): Allocate the new entry in GC memory.
+	(lto_read_member_DIE): Fix declaration.
+	(lto_read_subroutine_type_subprogram_DIE): unmaterialized_fndecls lives
+	in GC memory.
+	(current_lto_file): New variable.
+	(lto_main): Use it.
+	(DWARF2_attr, DWARF2_abbrev, lto_die_ptr, DWARF2_CompUnit,
+	lto_die_cache_entry): Move to...
+	* lto.h: ...here and add GTY markers as appropriate.  Delete forward
+	declarations accordingly.
+	(struct lto_file_struct): Declare.
+	(lto_file_vtable): Use it instead of lto_file.
+
+2007-11-06 Alon Dayan  <alond@il.ibm.com>
+	   Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	 * lto-read.c (process_flags, lto_static_init_local):
+	 read flags of VAR_DECL and FUNCTION_DECL of size>1.
+	 change global array num_flags_for_code to flags_length_for_code.
+	 (set_line_info): Make decls work in USE_MAPPED_LOCATION mode.
+	
+2007-11-05  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_structure_union_class_type_DIE): Use proper record
+	layout functions to compute information about the newly constructed
+	type.
+
+2007-11-02  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_expr_operand): Change the LTO_return_expr1
+	case to use DECL_RESULT if necessary.
+
+2007-11-01  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_tree_list): Removed.
+	(input_tree_flags): Added parameter to force flags no matter what
+	tree code.
+	(input_expr_operand): Added parameter to input_tree_flags.
+	Added case for IDENTIFIER_NODE and TREE_LIST.  Changed ASM to call
+	input_expr_operand rather than input_tree_lists.
+	(input_local_var): Use input_expr_operand to read attributes
+	rather then input_tree_list.
+	(input_phi, input_ssa_names): Added parameter to input_tree_flags.
+
+2007-10-31  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_typedef_DIE): Fix comment typo.
+	(lto_resolve_typedecl_ref): Fetch the referred-to type and build a fake
+	TYPE_DECL for it.
+	* lto-read.c (lto_read_body): Use correct sizes for calculating
+	type_decls_offset and types_offset.
+
+2007-10-30  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-tree.h (union lang_tree_node): Change GTY description to chain
+	with GENERIC_NEXT.
+	* config-lang.in (gtfiles): Add lto-lang.c.
+	* lto-lang.c: Include gt-lto-lto-lang.h.
+	* Make-lang.in (lto/lto-lang.o): Add dependency on gt-lto-lto-lang.h
+	(lto/lto-symtab.o): Depend on LTO_H instead of TREE_H.
+	(lto/lto-read.o): Likewise.
+
+2007-10-29  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (data_in): Added type_decls and current_col fields.
+	(string_slot): New type to hold canonized file name.
+	(hash_string_slot_node, eq_string_slot_node, canon_file_name, 
+	input_line_info, set_line_info, clear_line_info): New functions.
+	(file_name_hash_table): New hash table.
+	(input_local_var, input_labels, input_local_vars_index, 
+	input_local_var, input_local_vars, input_ssa_names): Reorganized parameters.
+	(input_uleb128): Changed type of byte var.
+	(input_expr_operand): Large number of changes to get line numbers
+	correct.  Added TYPE_DECL case.
+	(input_globals): Added code to get TYPE_DECLs processed.
+	(input_local_var): Added code to process line numbers and
+	TREE_CHAIN and DECL_CONTEXT.
+	(input_function, input_constructor): Added call to
+	clear_line_number.
+	(lto_static_init_local): Added code to get line numbers correct.
+	(lto_read_body): Added code to get TYPE_DECLS read and to change
+	parameters to the calls above that had their parms reorganized.
+
+	
+2007-10-29  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.h (lto_resolve_typedecl_ref): Declare.
+	* lto.c (lto_resolve_typedecl_ref): New function.
+
+2007-10-29  Mark Mitchell  <mark@codesourcery.com>
+	    Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_subroutine_type_subprogram_DIE): Read the child
+	DIEs even if we find an abstract origin for this DIE.
+
+2007-10-29  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_subroutine_type_subprogram_DIE): Build the
+	RESULT_DECL slightly earlier.  Only remember the decl for later
+	if we successfully merge declarations.
+
+2007-10-24  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Give label_values the proper
+	context and provide switch statements with a default type.
+	
+2007-10-23  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (lto_read_body): Move call to init_ssa_operands...
+	* lto.c (lto_materialize_function): ...to here.
+
+2007-10-22  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.h (struct lto_info_fd): Add field unmaterialized_fndecls.
+	* lto.c (lto_info_fd_init): Initialize it.
+	(lto_info_fd_close): Free it.
+	(lto_materialize_function): New function.
+	(lto_read_subroutine_type_subprogram_DIE): Save the result decl on
+	unmaterialized_fndecls.
+	(lto_file_read): Read in all the function bodies after we have read
+	all of the DWARF info.
+	* lto-read.c (lto_read_body): Call init_ssa_operands if we are
+	reading a function body.
+
+2007-10-20  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_tree_flags): Renamed from input_flags to be
+	semetric with output_tree_flags.  Added call to log flags.
+	(process_tree_flags): Renamed from process_flags.  Fixed a lot of
+	type issues to make everything consistent with flags being
+	unsigned HOST_WIDE_INTS.
+	(input_expr_operand): Added call to
+	recompute_tree_invariant_for_addr_expr.
+	(input_local_var): Added debugging for tree_chains.  Now calls
+	input_tree_flags.
+	(input_phi): Made flags unsigned HOST_WIDE_INT.
+	(input_ssa_names): Now calls input_tree_flags.
+	(lto_read_body): Now sets cfun.
+	(lto_read_function_body): Now sets current_function_pointer.
+	
+2007-10-19  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Check
+	definitively whether SPECIFICATION or ABSTRACT_ORIGIN exist before
+	inspecting fields within.
+	(lto_read_DIE_at_ptr): Delete check for null result; let callers
+	handle this appropriately.
+
+2007-10-19  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Handle
+	DW_AT_abstract_origin properly.  Ensure that we're not dealing with
+	both DW_AT_abstract_origin and DW_AT_specification.
+	(lto_read_subroutine_type_subprogram_DIE): Handle
+	DW_AT_abstract_origin.
+	(lto_read_DIE): Use lto_read_only_for_child_DIEs for labels.
+	(lto_read_DIE_at_ptr): Define as static to match declaration.
+	Lookup the PTR in the cache before reading it from the file.
+	(lto_resolve_var_ref): Adjust accordingly.
+	(lto_resolve_fn_ref): Adjust accordingly.  Tweak comment.
+	(lto_resolve_field_ref): Adjust accordingly.  Tweak comment.
+
+2007-10-19  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_DIE_at_ptr): New function.
+	(lto_resolve_var_ref): Use it.
+	(lto_resolve_fn_ref): Use it.
+	(lto_resolve_field_ref): Use it.
+	(lto_read_variable_formal_parameter_constant_DIE): Follow
+	DW_AT_specification and return the associated decl when appropriate.
+
+2007-10-18  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (lto_type_for_mode): Move after lto_type_for_size.
+	Implement for scalar integer modes.
+	(lto_init): Initialize size_type_node.
+
+2007-10-18  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Remove ssa name asserts.
+	(input_local_var): Add chaining for params.
+	(input_ssa_names): Add cfun parameter.
+	(input_function): Remove unnecessary else.
+
+2007-10-17  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_only_for_child_DIEs): Mark die parameter as unused.
+	(lto_resolve_var_ref): Use proper types.
+	(lto_resolve_fn_ref): Likewise.
+	(lto_resolve_field_ref): Likewise.
+
+2007-10-17  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (input_expr_operand): Remove case.
+
+2007-10-17  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_only_for_child_DIEs): New function.
+	(lto_read_DIE): Use it for lexical_block and inlined_subroutine DIEs.
+	* lto-elf.c (lto_elf_map_lto_section): Remove.
+	(lto_elf_file_vtable): Use lto_elf_map_optional_lto_section instead.
+	* lto-read.c (input_expr_operand): Assert that we never read a NULL
+	SSA_NAME.  Add missing case for mechanical codes.
+	(input_cfg): Use basic_block_info_for_function instead of
+	basic_block_info.
+
+2007-10-16  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_sleb128, input_integer): Use proper casts.
+	(input_list): Renamed input_tree_list and modified to follow same
+	protocol as lto-function-out.c:output_tree_list.
+	(input_expr_operand): Make asm operands use input_tree_list.
+	(input_local_var): Now uses input_tree_list.
+	(lto_read_body): Change placement for setting context of debug_labels.
+	
+	
+2007-10-16  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_real): Output debugging in proper order.
+	(input_integer): Compute bit lengths properly.
+	(input_list): Clean up declaration.
+	(input_expr_operand): Change calls to input_real to match fix.
+	Make reading of LTO_bit_field_ref1 match output.
+	(input_local_var): Make reading of attributes match what is being
+	written.
+	(dump_debug_stream): Also print char in hex.
+	(debug_out_fun): Fix signed unsigned mismatch.
+	
+2007-10-10  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c (lto_read_form): Handle DW_AT_MIPS_linkage_name and
+	DW_AT_GNU_vector specially, as they are not contiguous with the
+	specified set of attribute names.  Use class_mask to check for
+	errors at the end of the function
+	(lto_resolve_var_ref): Read the DIE if it is not cached.
+	(lto_resolve_fn_ref): Likewise.
+	(lto_resolve_field_ref): Likewise.
+
+2007-10-05  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto.c: Include dwarf2out.h.
+	(lto_cache_store_DIE): Assert that we never change the value.
+	(LTO_BEGIN_READ_ATTRS): Print an informative error message.
+	(lto_read_compile_unit_DIE): Handle DW_AT_entry_pc.
+	(lto_read_array_type_DIE): Don't error on ndims == 0; build a
+	sensible type instead.
+	(lto_read_structure_union_class_type_DIE): Store the newly
+	created type prior to reading the members of the structure to
+	avoid infinite recursion.  Avoid computing types and alignments
+	for structures whose sizes are unknown.
+	(lto_read_variable_formal_parameter_const): Handle DW_AT_artificial
+	and set DECL_ARTIFICIAL accordingly.  Ignore DW_AT_abstract_origin,
+	DW_AT_const_value, and DW_AT_specification.
+	(lto_read_subroutine_type_subprogram_DIE): Handle DW_AT_declaration.
+	Return early if we have already constructed the function type.
+	(lto_read_typedef_DIE): Check to see if the type has been cached
+	already.  Cache the type before reading any children.
+	(lto_read_const_volatile_restrict_type_DIE): Handle DW_AT_name.
+	(lto_read_DIE): Unset context->skip_non_parameters around reading
+	the DIE.
+	(lto_resolve_fn_ref): Delete trailing whitespace.
+
+2007-09-11  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Added type for STRING_CST.
+	
+2007-09-10  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-read.c (lto_read): Set the type of the newly created CALL_EXPR.
+
+2007-09-07  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* lto-lang.c (signed_and_unsigned_types): New variable.
+	(lto_type_for_size): Consult signed_and_unsigned_types to find
+	an approprite type, creating it if necessary.
+	(lto_set_decl_assembler_name): Add actual method body.
+
+2007-09-06  Jim Blandy  <jimb@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): If we
+	can't find a var init for this variable, leave its DECL_INITIAL.
+	* lto-elf.c (lto_elf_map_optional_lto_section): Renamed from
+	lto_elf_map_fn_body.
+	(lto_map_lto_section): New function.
+	(lto_elf_file_vtable): Use lto_elf_map_lto_section for function
+	bodies, and lto_elf_map_optional_lto_section for variable
+	initializers.
+	(lto_elf_find_section_data): Quietly return NULL if the section is
+	missing.
+	(lto_elf_file_open): Check for a NULL from lto_elf_find_section_data.
+
+	* lto-elf.c (lto_elf_find_section_data): Remove dead code.
+
+	* lto-read.c (lto_read_body): Doc fix.
+
+2007-08-29  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (fun_in): Renamed to data_in.
+	(input_expr_operand, input_local_var, input_string_internal,
+	input_string, input_real, input_list, get_label_decl, 
+	get_type_ref, input_expr_operand, input_globals, input_labels,
+	input_local_vars_index, input_local_var, input_local_vars, 
+	input_cfg, input_phi, input_ssa_names, input_bb, ): Renamed fun_in to data_in.
+	(input_constructor): New function.
+	(lto_read_function_body): Renamed to lto_read_body and generalized
+	to handle both functions and constructors.
+	(lto_read_function_body, lto_read_var_init): New function.
+	
+	
+2007-08-28  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Assert that there really is a
+	FUNCTION_DECL.
+	(input_globals): Removed checks on 0 section.
+	
+2007-08-28  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (fun_in): Added local_decls_index and
+	local_decls_index_d.  
+	(input_expr_operand): Changed inputting of PARM_DECLs and VAR_DECLs.
+	(input_globals): Enabled code to handle FIELD_DECLs.
+	(input_local_vars_index, input_local_vars): New function.
+	(input_local_var): Changed to allow locals to be input randomly.
+	(lto_read_function_body): Added code to input the
+	local_decls_index and to free various structures.
+	
+2007-08-17  Jim Blandy  <jimb@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Remove
+	ATTRIBUTE_UNUSED from 'die' formal.
+
+	Use enum LTO_tags where appropriate, instead of 'unsigned int'.
+	* lto-read.c (input_record_start): Fix return type, type of 'tag'.
+	(input_list): Fix type of 'tag'.
+	(input_expr_operand): Fix type of 'tag' argument.  Update
+	declaration.  Fix type of 'ctag'.  Add default case to switch,
+	since the type of the switched value is now an enum.
+	(input_local_vars): Fix type of 'tag'.
+	(input_bb): Fix type of 'tag' argument.
+	(input_function): Fix type of 'tag' argument.
+
+2007-08-16  Jim Blandy  <jimb@codesourcery.com>
+
+	* lto.c (lto_read_member_DIE): Record the tree we create in
+	fd->die_cache.  (Our 'die' argument is no longer unused.)
+	(lto_resolve_field_ref): New function.
+	* lto.h (lto_resolve_field_ref): New declaration.
+
+2007-08-15  Jim Blandy  <jimb@codesourcery.com>
+
+	* lto-read.c (lto_read_var_init): Mark arguments as unused.
+
+2007-08-07  Jim Blandy  <jimb@codesourcery.com>
+
+	* lto.c (lto_read_form): Complete attr_classes table.
+	(DWARF2_form_data): Doc fix.
+	
+2007-08-05  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.h (lto_file_vtable): Remove read_var_init.  Add map_var_init
+	and unmap_var_init.
+	(lto_read_var_init): Declare.
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Use new
+	interface for reading variable initializers.
+	* lto-elf.c (lto_elf_read_var_init): Remove.
+	(lto_elf_file_vtable): Update initializer.
+	(lto_elf_read_var_init): Add comment about unused-ness.
+	* lto-read.c (lto_read_var_init): New.
+
+	* lto.c (lto_read_form): Add entry for DW_AT_inline.
+
+2007-08-02  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (lto_read_function_body): Moved declaration of fn
+	outside of ifdef.
+	
+2007-08-01  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_uleb128, input_string_internal, input_real,
+	input_integer, input_record_start, input_list, get_type_ref,
+	input_flags, input_expr_operand, input_expr_operand,
+	input_expr_operand, input_local_vars, input_cfg, input_phi,
+	input_ssa_names, input_bb, input_function): Added semicolons.
+
+	
+2007-07-31  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_globals): Remove debugging.
+	(input_function): Set DECL_ARGUMENTS.
+
+	
+2007-07-31  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_expr_operand): Fixed code for COND_EXEC,
+	RETURN_EXPR, MODIFY_EXPR and processing of flags.
+	(input_phi): Made work with operands other than SSA_NAMES and
+	fixed processing of flags.
+	(input_ssa_names): Initialize SSA_NAME_DEF_STMT to empty stmt.
+	(input_flags): New function.
+	* lto-lang.c (lto_init): Changed state of in_lto_p.
+	
+	
+2007-07-24  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto-tree.h (lto_varargs_cookie): Remove.
+	* lto.c (lto_context): Add last_parm_type, varargs_p, skip_all,
+	skip_non_parameters, skip_parameters.
+	(lto_varargs_cookie): Remove.
+	(lto_read_variable_formal_parameter_constant_DIE): Keep track of
+	parameter types.
+	(lto_read_abbrev): New function.
+	(lto_read_subroutine_type_subprogram_DIE): Make two passes over
+	child DIEs.
+	(lto_read_unspecified_parameters_DIE): Set context->varargs_p.
+	(lto_read_DIE): Use lto_read_abbrev.  Honor skip_* flags.
+	(lto_file_read): Initialize new context fields.
+	* lto-lang.c (lto_type_for_mode): Return NULL_TREE.
+	(lto_unsigned_type): Remove.
+	(lto_signed_type): Likewise.
+	(lto_signed_or_unsigned_type): Likewise.
+	(lto_init): Do not create lto_varargs_cookie.
+	(LANG_HOOKS_UNSIGNED_TYPE): Do not define.
+	(LANG_HOOKS_SIGNED_TYPE): Likewise.
+	(LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE): Likewise.
+
+2007-07-19  Jan Hubicka  <jh@suse.cz>
+
+	* lto-read.c (lto_read_function_body): Produce empty scope block
+	to avoid crash.
+
+2007-07-18  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Do not
+	process local variables.
+	(lto_read_subroutine_type_subprogram_DIE): Read child DIEs.
+
+2007-07-13  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read.c (input_list, input_expr_operand): Added struct
+	function parameter.
+	(init_cfg, finalize_cfg): Removed function.
+	(input_expr_operand): Added SSA_NAME and GIMPLE_MODIFY_STMT cases.
+	(input_labels, input_local_vars): Now takes input_block parameter rather than
+	synthsyzing it.
+	(input_cfg, input_phi, input_ssa_names): New functions.
+	(input_bb): Now passes in input_blocks.  Does not construct cfg
+	and processes the list of phi functions.
+	(input_function): Now builds both the cfg and ssa_names table.
+	(lto_read_function_body): Processes new header fields to construct
+	streams for the ssa_names and cfg and their debugging.
+	* lto/lto-lang.c (lto_init): Set in_lto_p.
+	
+	
+2007-06-28  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.h (lto_file_vtable): Add read_var_init.
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE): Read
+	initializers.
+	(lto_main): Remove bogus asserts.
+	* lto-elf.c (tm.h): Include it.
+	(libiberty.y): Likewise.
+	(lto_elf_file): Add strtab and symtab.  Rename
+	string_table_section_index to sec_strtab.
+	(lto_elf_file_vtable): Add lto_elf_read_var_init.
+	(lto_elf_get_shdr): New function.
+	(lto_elf_free_shdr): Likewise.
+	(lto_elf_find_section_data): Use them.
+	(lto_elf_read_symtab): New function.
+	(lto_elf_lookup_sym): Likewise.
+	(lto_elf_free_sym): Likewise.
+	(lto_elf_file_open): Tidy.  Call lto_elf_read_symtab.
+	(lto_elf_built_init): New function.
+	(lto_elf_read_var_init): Likewise.
+	* Make-lang.in (lto/lto-elf.o): Depend on $(TM_H).
+
+2007-06-26  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto-read (make_new_block): Initialize the stmt_list.
+	(lto_static_init_local): Add debugging for missing codes.
+	
+2007-06-26  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (lto_read_subroutine_type_subprogram_DIE): Handle
+	unprototyped functions. 
+
+2007-06-23  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (lto_read_variable_formal_parameter_constant_DIE):
+	Handle DW_AT_MIPS_linkage_name.
+	(lto_read_subroutine_type_subprogram): Likewise.  Correct
+	compilation errors.
+	(lto_main): Remove incorrect assertions.
+	* lto-symbtab.c: Build function types out of TREE_LISTs.
+
+	* lto-elf.c (<libelf>): Check for HAVE_LIBELF_H.
+	
+	* Make-lang.in (LTO_OBJS): Depend on attribs.o.
+	
+2007-06-21  Kenneth Zadeck <zadeck@naturalbridge.com>
+
+	* lto/lto-tree.h (lang_decl, lang_type, language_function): Added
+	dummy since ggc does not like empty structs.
+	* lto/lto-elf.c (libelf.h): Changed to libelf/libelf.h.
+	* lto/lto-read.c (ADD_CLASS_FLAG, ADD_EXPR_FLAG): Changed
+	expr->common to expr->base.
+	(make_new_block): Moved stmt_list to proper place.
+
+
+2007-03-14 Robert Kennedy  <jimbob@google.com>
+
+	Eliminate use of lang_hooks.set_decl_assembler_name from LTO
+	* lto.c (lto_read_subroutine_type_subprogram_DIE) Get DECL
+	assembler name from DWARF.
+	* lto-lang.c (lto_set_decl_assembler_name) New function.
+
+2006-09-10  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.h (lto_file_vtable): New structure.
+	(lto_file): Add vtable pointer.
+	(lto_file_init): Add vtable paramter.
+	(lto_read_function_body): New function.
+	(lto_symtab_merge_fn): New function.
+	* lto.c (lto_file_init): Add vtable parameter.
+	(lto_read_form): Fill in entries for DW_AT_prototyped,
+	DW_AT_frame_base.
+	(lto_read_subroutine_type_subprogram_DIE): New function.
+	(lto_read_DIE): Fill in entries for DW_TAG_subroutine_type and
+	DW_TAG_subprogram.
+	* lto-elf.c (lto_elf_vile_vtable): New variable.
+	(lto_elf_file_open): Pass it to lto_file_init.
+	(lto_elf_map_fn_body): New function.
+	(lto_elf_unmap_fn_body): Likewise.
+	* lto-read.c: New file.
+	* lto-symtab.c (lto_symtab_merge_fn): New function.
+	* lto-lang.c (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Define to
+	tree_rest_of_compilation.
+	* Make-lang.in (LTO_OBJS): Add lto-read.o
+	(lto-read.o): New target.
+
+2006-09-03  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (<inttypes.h>): Don't include it.
+	(lto_context): Don't typedef it.
+	(lto_resolve_reference): New function.
+	(lto_read_form): Use it.
+	(lto_resolve_type_ref): New function.
+	(lto_resolve_var_ref): Likewise.
+	(lto_resolve_fn_ref): Likewise.
+	* lto.h (<inttypes.h>): Include it.
+	(lto_context): New type.
+	(lto_ref): New structure.
+	(lto_resolve_type_ref): Declare.
+	(lto_resolve_var_ref): Likewise.
+	(lto_resolve_fn_ref): Likewise.
+
+2006-08-18  Mark Mitchell  <mark@codesourcery.com>
+
+	* lang-specs.h: New file.
+
+2006-08-14  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (lto_info_fd_init): Allocate the DIE cache.
+	(lto_info_fd_close): Deallocate it.
+	(lto_die_cache_entry): New structure.
+	(lto_cache_hash): New function.
+	(lto_cache_eq): Likewise.
+	(lto_cache_store_DIE): Likewise.
+	(lto_cache_lookup_DIE): Likewise.
+	(lto_read_referenced_type_DIE): Use the cache.
+	(lto_read_pointer_type_DIE): Robustify.
+	(lto_read_DIE): Use the cache.
+	* lto.h (hashtab.h): Include.
+	(lto_info_fd): Add DIE cache.
+	* Make-lang.in (LTO_H): New variable.
+	(lto/lto-lang.o): Use LTO_H.
+	(lto/lto-elf.o): Likewise.
+	(lto/lto-symtab.o): Likewise.
+
+2006-07-09  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (lto_abi_mismatch_error): New function.
+	(lto_abbrev_read): Initialize num_abbrevs.
+	(lto_read_form): Specify allowed form classes for
+	DW_AT_declaration.  Adjust for change to lto_set_cu_context.
+	(lto_read_variable_formal_parameter_constant_DIE): Handle
+	DW_AT_declaration.  Call lto_symtab_merge_var.
+	(lto_read_pointer_type_DIE): New function.
+	(lto_read_base_type_DIE): Use build_nonstandard_integer_type.  Do
+	not creat TYPE_DECLs for types that already have them.
+	(lto_read_DIE): Add lto_read_pointer_type_DIE.
+	(lto_set_cu_context): Make cu_start point to the header, not the
+	first DIE.
+	(lto_file_read): Adjust for change to lto_set_cu_context.
+	* Make-lang.in (LTO_OBJS): Add lto-symtab.o.
+	(lto/lto-symtab.o): New rule.
+	* lto-tree.h (lang_identifier): Add decl field.
+	(LANG_IDENTIFIER_CAST): New macro.
+	(LTO_IDENTIFIER_DECL): Likewise.
+	(lto_symtab_merge_var): Declare.
+	* lto-symtab.c: New file.
+
+2006-07-02  Daniel Berlin  <dberlin@dberlin.org>
+
+	* lto.c (lto_context): Add current_cu and info_fd members.
+	(DWARF2_CompUnit): New structure.
+	(lto_read_DIE): Take lto_info_fd *.
+	(lto_read_child_DIEs): Ditto.
+	(lto_file_corrupt_error): Constify argument.
+	(lto_set_cu_context): New function
+	(lto_info_fd_init): Ditto.
+	(lto_info_fd_close): Ditto.
+	(lto_file_init): Use lto_info_fd_init.
+	(lto_file_close): Use lto_info_fd_close.
+	(lto_read_initial_length): Pass in pointer to header size.
+	(lto_read_comp_unit_header): Correct cu_length to
+	real length from beginning of header.  Take lto_info_fd * as
+	argument.
+	(find_cu_for_offset): New function.
+	(lto_read_form): Change first argument to lto_info_fd *.
+	Add FORM_CONTEXT argument.
+	Handle DW_FORM_ref_addr.
+	(lto_read_tag_DIE): Change first argument to lto_info_fd *.	
+	(LTO_BEGIN_READ_ATTRS_UNCHECKED): Save old context.
+	Swap contexts if necessary for form.
+	(LTO_BEGIN_READ_ATTRS): Cast fd to right type for
+	lto_file_corrupt_error.
+	(LTO_END_READ_ATTRS): Swap contexts back if it had changed.
+	(lto_read_referenced_type_DIE): Change first argument to
+	lto_info_fd *.  Access lto_fd fields through base pointer.
+	(lto_read_compile_unit_DIE): Change first argument to an
+	lto_info_fd *.
+	(lto_read_variable_formal_parameter_constant_DIE): Ditto.
+	(lto_read_base_type_DIE): Ditto.
+	(lto_read_child_DIEs): Ditto.
+	(lto_read_DIE): Ditto.  Change type of function pointer.
+	(lto_info_read): New function.
+	(lto_set_cu_context): Ditto.
+	(lto_file_read): Use lto_info_read, walk resulting CU's
+	(lto_main): Update for lto_info_fd change.
+	* lto-elf.c (lto_elf_file_open): Cast lto_info_fd to lto_fd where
+	necessary.
+	* lto.h (DWARF2_CompUnit): New structure.
+	(lto_info_fd): Ditto.
+	(lto_file): Change debug_info to be an lto_info_fd.
+	
+2006-06-25  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.c (toplev.h): Include it.
+	(dwarf2.h): Likewise.
+	(tree.h): Likewise.
+	(tm.h): Likewise.
+	(cgraph.h): Likewise.
+	(ggc.h): Likewise.
+	(inttypes.h): Likewise.
+	(DWARF2_attr): New type.
+	(DWARF2_abbrev): Likewise.
+	(DWARF2_class): Likewise.
+	(DWARF2_form_data): Likewise.
+	(lto_context): Likewise.
+	(lto_fd_init): New function.
+	(lto_abbrev_fd_init): Likewise.
+	(lto_abbrev_fd_close): Likewise.
+	(lto_file_init): Use them.
+	(lto_file_close): New function.
+	(lto_file_corrupt_error): Likewise.
+	(LTO_CHECK_INT_VAL): New macro.
+	(lto_check_size_t_val): New function.
+	(lto_check_int_val): Likewise.
+	(LTO_READ_TYPE): New macro.
+	(lto_read_ubyte): New function.
+	(lto_read_uhalf): Likewise.
+	(lto_read_uword): Likewise.
+	(lto_read_uleb128): Likewise.
+	(lto_read_initial_length): Likewise.
+	(lto_abbrev_read_attrs): Likewise.
+	(lto_abbrev_read): Likewise.
+	(lto_abbrev_lookup): Likewise.
+	(lto_read_section_offset): Likewise.
+	(lto_read_comp_unit_header): Likewise.
+	(lto_read_form): Likewise.
+	(LTO_BEGIN_READ_ATTRS_UNCHECKED): New macro.
+	(LTO_BEGIN_READ_ATTRS): Likewise.
+	(LTO_END_READ_ATTRS): Likewise.
+	(lto_unsupported_attr_error): New function.
+	(lto_get_identifier): Likewise.
+	(lto_read_referenced_type_DIE): Likewise.
+	(lto_read_compile_unit_DIE): Likewise.
+	(lto_read_variable_formal_parameter_constant_DIE): Likewise.
+	(lto_read_base_type_DIE): Likewise.
+	(lto_read_DIE): Likewise.
+	(lto_read_child_DIEs): Likewise.
+	(lto_file_read): Read DIEs.
+	(lto_main): Ask middle end to emit entities.
+	* lto-tree.h (lang_identifier): Inherit from tree_identifier.
+	* lto-elf.c (lto_elf_file_open): Adjust for interface changes.
+	(lto_elf_file_close): Likewise.
+	* lto.h (lto_file): Declare.
+	(DWARF2_abbrev): Likewise.
+	(lto_fd): New type.
+	(lto_abbrev_fd): Likewise.
+	(lto_file): Use new types.
+	(lto_file_close): Declare.
+	* lto-lang.c (lto_init): Always use unit-at-a-time mode.
+	
+2006-06-18  Mark Mitchell  <mark@codesourcery.com>
+
+	* lto.h: New file.
+	* lto.c: New file.
+	* lto-elf.c: New file.
+	* lto-lang.c (flags.h): Include it.
+	(lto.h): Likewise.
+	(lto_init): New function.
+	(lto_write_globals): Remove.
+	(LANG_HOOKS_WRITE_GLOBALS): Define to lhd_do_nothing. 
+	(LANG_HOOKS_INIT): Define.
+	(LANG_HOOKS_PARSE_FILE): Likewise.
+	* Make-lang.in (LTO_OBJS): Add lto.o and lto-elf.o.
+	(LTO_EXE): Link with libelf.
+	(lto/lto-lang.o): Update dependencies.
+	(lto/lto.o): New target.
+	(lto/lto-elf.o): Likewise.
+
+2006-06-12  Mark Mitchell  <mark@codesourcery.com>
+
+	* config-lang.in: New file.
+	* Make-lang.in: Likewise.
+	* lto-tree.h: Likewise.
+	* lto-lang.c: Likewise.
+
diff --git a/gcc-4.9/gcc/lto/Make-lang.in b/gcc-4.9/gcc/lto/Make-lang.in
new file mode 100644
index 000000000..a3c162d2d
--- /dev/null
+++ b/gcc-4.9/gcc/lto/Make-lang.in
@@ -0,0 +1,75 @@
+# Top level -*- makefile -*- fragment for LTO
+#   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Variables
+
+# The name of the LTO compiler.
+LTO_EXE = lto1$(exeext)
+# The LTO-specific object files inclued in $(LTO_EXE).
+LTO_OBJS = lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o lto/lto-partition.o lto/lto-symtab.o
+lto_OBJS = $(LTO_OBJS)
+
+# Rules
+
+# These hooks are used by the main GCC Makefile.  Consult that
+# Makefile for documentation.
+lto.all.cross: $(LTO_EXE)
+lto.start.encap: $(LTO_EXE)
+lto.rest.encap:
+lto.tags:
+lto.install-common:
+lto.install-man:
+lto.install-info:
+lto.dvi:
+lto.pdf:
+lto.install-pdf:
+lto.html:
+lto.install-html:
+lto.uninstall:
+lto.info:
+lto.man:
+lto.srcextra:
+lto.srcman:
+lto.srcinfo:
+lto.install-plugin:
+
+lto.mostlyclean:
+	rm -f $(LTO_OBJS) $(LTO_EXE)
+
+lto.clean:
+lto.distclean:
+lto.maintainer-clean:
+lto.stage1:
+lto.stage2:
+lto.stage3:
+lto.stage4:
+lto.stageprofile:
+lto.stagefeedback:
+
+# LTO rules.
+
+# Use strict warnings for this front end.
+lto-warn = $(STRICT_WARN)
+
+$(LTO_EXE): $(LTO_OBJS) $(BACKEND) $(LIBDEPS)
+	+$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+		$(LTO_OBJS) $(BACKEND) $(BACKENDLIBS) $(LIBS)
+
+# LTO testing is done as part of C/C++/Fortran etc. testing.
+check-lto:
diff --git a/gcc-4.9/gcc/lto/common.c b/gcc-4.9/gcc/lto/common.c
new file mode 100644
index 000000000..7e8a74357
--- /dev/null
+++ b/gcc-4.9/gcc/lto/common.c
@@ -0,0 +1,47 @@
+/* Common code for the plugin and lto1.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by Rafael Avila de Espindola (espindola@google.com).
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+02110-1301, USA.  */
+
+#include "common.h"
+
+const char *lto_kind_str[5] __attribute__ ((visibility ("hidden"))) =
+{
+  "DEF", "WEAKDEF", "UNDEF",
+  "WEAKUNDEF", "COMMON"
+};
+
+const char *lto_visibility_str[4] __attribute__ ((visibility ("hidden"))) =
+{
+  "DEFAULT", "PROTECTED",
+ "INTERNAL", "HIDDEN"
+};
+
+const char *lto_resolution_str[10] __attribute__ ((visibility ("hidden"))) =
+{
+  "UNKNOWN",
+  "UNDEF",
+  "PREVAILING_DEF",
+  "PREVAILING_DEF_IRONLY",
+  "PREEMPTED_REG",
+  "PREEMPTED_IR",
+  "RESOLVED_IR",
+  "RESOLVED_EXEC",
+  "RESOLVED_DYN",
+  "PREVAILING_DEF_IRONLY_EXP",
+};
+
diff --git a/gcc-4.9/gcc/lto/common.h b/gcc-4.9/gcc/lto/common.h
new file mode 100644
index 000000000..0f83bbe7c
--- /dev/null
+++ b/gcc-4.9/gcc/lto/common.h
@@ -0,0 +1,35 @@
+/* Common code for the plugin and lto1.
+   Copyright (C) 2008-2014 Free Software Foundation, Inc.
+   Contributed by Rafael Avila de Espindola (espindola@google.com).
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+
+
+static const char *lto_resolution_str[10] =
+{
+  "UNKNOWN",
+  "UNDEF",
+  "PREVAILING_DEF",
+  "PREVAILING_DEF_IRONLY",
+  "PREEMPTED_REG",
+  "PREEMPTED_IR",
+  "RESOLVED_IR",
+  "RESOLVED_EXEC",
+  "RESOLVED_DYN",
+  "PREVAILING_DEF_IRONLY_EXP",
+};
diff --git a/gcc-4.9/gcc/lto/config-lang.in b/gcc-4.9/gcc/lto/config-lang.in
new file mode 100644
index 000000000..7b9da4711
--- /dev/null
+++ b/gcc-4.9/gcc/lto/config-lang.in
@@ -0,0 +1,34 @@
+# Top level configure fragment for LTO
+#   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+language="lto"
+compilers="lto1\$(exeext)"
+stagestuff="lto1\$(exeext)"
+
+gtfiles="\$(srcdir)/lto/lto-tree.h \$(srcdir)/lto/lto-lang.c \$(srcdir)/lto/lto.c \$(srcdir)/lto/lto.h"
+
+# LTO is a special front end.  From a user's perspective it is not
+# really a language, but a middle end feature.  However, the GIMPLE
+# reading module is implemented as a front end, so enabling LTO means
+# enabling this "language". To enable LTO functionality, use
+# --enable-lto when configuring the compiler.
+build_by_default=no
+
+# Add LTO to boot language if it is enabled.
+boot_language=$enable_lto
diff --git a/gcc-4.9/gcc/lto/lang-specs.h b/gcc-4.9/gcc/lto/lang-specs.h
new file mode 100644
index 000000000..b31e9f096
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lang-specs.h
@@ -0,0 +1,24 @@
+/* LTO driver specs.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* LTO contributions to the "compilers" array in gcc.c.  */
+  
+  {"@lto", "lto1 %(cc1_options) %i %{!fsyntax-only:%(invoke_as)}",
+   /*cpp_spec=*/NULL, /*combinable=*/1, /*needs_preprocessing=*/0},
diff --git a/gcc-4.9/gcc/lto/lang.opt b/gcc-4.9/gcc/lto/lang.opt
new file mode 100644
index 000000000..07a119574
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lang.opt
@@ -0,0 +1,47 @@
+; Options for the LTO front end.
+; Copyright (C) 2008-2014 Free Software Foundation, Inc.
+;
+; This file is part of GCC.
+;
+; GCC is free software; you can redistribute it and/or modify it under
+; the terms of the GNU General Public License as published by the Free
+; Software Foundation; either version 3, or (at your option) any later
+; version.
+; 
+; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+; WARRANTY; without even the implied warranty of MERCHANTABILITY or
+; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+; for more details.
+; 
+; You should have received a copy of the GNU General Public License
+; along with GCC; see the file COPYING3.  If not see
+; <http://www.gnu.org/licenses/>.
+
+; See the GCC internals manual for a description of this file's format.
+
+; Please try to keep this file in ASCII collating order.
+
+Language
+LTO
+
+fltrans
+LTO Report Var(flag_ltrans)
+Run the link-time optimizer in local transformation (LTRANS) mode.
+
+fltrans-output-list=
+LTO Joined Var(ltrans_output_list)
+Specify a file to which a list of files output by LTRANS is written.
+
+fwpa
+LTO Driver Report
+Run the link-time optimizer in whole program analysis (WPA) mode.
+
+fwpa=
+LTO Driver RejectNegative Joined Var(flag_wpa)
+Whole program analysis (WPA) mode with number of parallel jobs specified.
+
+fresolution=
+LTO Joined
+The resolution file
+
+; This comment is to ensure we retain the blank line above.
diff --git a/gcc-4.9/gcc/lto/lto-lang.c b/gcc-4.9/gcc/lto/lto-lang.c
new file mode 100644
index 000000000..f60d2127b
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto-lang.c
@@ -0,0 +1,1323 @@
+/* Language-dependent hooks for LTO.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "flags.h"
+#include "tm.h"
+#include "tree.h"
+#include "stringpool.h"
+#include "stor-layout.h"
+#include "target.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "debug.h"
+#include "lto-tree.h"
+#include "lto.h"
+#include "tree-inline.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "diagnostic-core.h"
+#include "toplev.h"
+#include "lto-streamer.h"
+#include "cilk.h"
+
+static tree lto_type_for_size (unsigned, int);
+
+static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
+static tree handle_leaf_attribute (tree *, tree, tree, int, bool *);
+static tree handle_const_attribute (tree *, tree, tree, int, bool *);
+static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
+static tree handle_pure_attribute (tree *, tree, tree, int, bool *);
+static tree handle_novops_attribute (tree *, tree, tree, int, bool *);
+static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *);
+static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *);
+static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
+static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
+static tree handle_transaction_pure_attribute (tree *, tree, tree, int, bool *);
+static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *);
+static tree ignore_attribute (tree *, tree, tree, int, bool *);
+
+static tree handle_format_attribute (tree *, tree, tree, int, bool *);
+static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *);
+static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
+
+/* Table of machine-independent attributes supported in GIMPLE.  */
+const struct attribute_spec lto_attribute_table[] =
+{
+  /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,
+       do_diagnostic } */
+  { "noreturn",               0, 0, true,  false, false,
+			      handle_noreturn_attribute, false },
+  { "leaf",		      0, 0, true,  false, false,
+			      handle_leaf_attribute, false },
+  /* The same comments as for noreturn attributes apply to const ones.  */
+  { "const",                  0, 0, true,  false, false,
+			      handle_const_attribute, false },
+  { "malloc",                 0, 0, true,  false, false,
+			      handle_malloc_attribute, false },
+  { "pure",                   0, 0, true,  false, false,
+			      handle_pure_attribute, false },
+  { "no vops",                0, 0, true,  false, false,
+			      handle_novops_attribute, false },
+  { "nonnull",                0, -1, false, true, true,
+			      handle_nonnull_attribute, false },
+  { "nothrow",                0, 0, true,  false, false,
+			      handle_nothrow_attribute, false },
+  { "returns_twice",          0, 0, true,  false, false,
+			      handle_returns_twice_attribute, false },
+  { "sentinel",               0, 1, false, true, true,
+			      handle_sentinel_attribute, false },
+  { "type generic",           0, 0, false, true, true,
+			      handle_type_generic_attribute, false },
+  { "fn spec",	 	      1, 1, false, true, true,
+			      handle_fnspec_attribute, false },
+  { "transaction_pure",	      0, 0, false, true, true,
+			      handle_transaction_pure_attribute, false },
+  /* For internal use only.  The leading '*' both prevents its usage in
+     source code and signals that it may be overridden by machine tables.  */
+  { "*tm regparm",            0, 0, false, true, true,
+			      ignore_attribute, false },
+  { NULL,                     0, 0, false, false, false, NULL, false }
+};
+
+/* Give the specifications for the format attributes, used by C and all
+   descendants.  */
+
+const struct attribute_spec lto_format_attribute_table[] =
+{
+  /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,
+       affects_type_identity } */
+  { "format",                 3, 3, false, true,  true,
+			      handle_format_attribute, false },
+  { "format_arg",             1, 1, false, true,  true,
+			      handle_format_arg_attribute, false },
+  { NULL,                     0, 0, false, false, false, NULL, false }
+};
+
+enum built_in_attribute
+{
+#define DEF_ATTR_NULL_TREE(ENUM) ENUM,
+#define DEF_ATTR_INT(ENUM, VALUE) ENUM,
+#define DEF_ATTR_STRING(ENUM, VALUE) ENUM,
+#define DEF_ATTR_IDENT(ENUM, STRING) ENUM,
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM,
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_STRING
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+  ATTR_LAST
+};
+
+static GTY(()) tree built_in_attributes[(int) ATTR_LAST];
+
+/* Builtin types.  */
+
+enum lto_builtin_type
+{
+#define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
+#define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME,
+#define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6) NAME,
+#define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7) NAME,
+#define DEF_FUNCTION_TYPE_8(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7, ARG8) NAME,
+#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG6) \
+  NAME,
+#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
+#include "builtin-types.def"
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_0
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_7
+#undef DEF_FUNCTION_TYPE_8
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+  BT_LAST
+};
+
+typedef enum lto_builtin_type builtin_type;
+
+static GTY(()) tree builtin_types[(int) BT_LAST + 1];
+
+static GTY(()) tree string_type_node;
+static GTY(()) tree const_string_type_node;
+static GTY(()) tree wint_type_node;
+static GTY(()) tree intmax_type_node;
+static GTY(()) tree uintmax_type_node;
+static GTY(()) tree signed_size_type_node;
+
+/* Flags needed to process builtins.def.  */
+int flag_isoc94;
+int flag_isoc99;
+
+/* Attribute handlers.  */
+
+/* Handle a "noreturn" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_noreturn_attribute (tree *node, tree ARG_UNUSED (name),
+			   tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			   bool * ARG_UNUSED (no_add_attrs))
+{
+  tree type = TREE_TYPE (*node);
+
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    TREE_THIS_VOLATILE (*node) = 1;
+  else if (TREE_CODE (type) == POINTER_TYPE
+	   && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+    TREE_TYPE (*node)
+      = build_pointer_type
+	(build_type_variant (TREE_TYPE (type),
+			     TYPE_READONLY (TREE_TYPE (type)), 1));
+  else
+    gcc_unreachable ();
+
+  return NULL_TREE;
+}
+
+/* Handle a "leaf" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_leaf_attribute (tree *node, tree name,
+		       tree ARG_UNUSED (args),
+		       int ARG_UNUSED (flags), bool *no_add_attrs)
+{
+  if (TREE_CODE (*node) != FUNCTION_DECL)
+    {
+      warning (OPT_Wattributes, "%qE attribute ignored", name);
+      *no_add_attrs = true;
+    }
+  if (!TREE_PUBLIC (*node))
+    {
+      warning (OPT_Wattributes, "%qE attribute has no effect on unit local functions", name);
+      *no_add_attrs = true;
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "const" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_const_attribute (tree *node, tree ARG_UNUSED (name),
+			tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			bool * ARG_UNUSED (no_add_attrs))
+{
+  tree type = TREE_TYPE (*node);
+
+  /* See FIXME comment on noreturn in c_common_attribute_table.  */
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    TREE_READONLY (*node) = 1;
+  else if (TREE_CODE (type) == POINTER_TYPE
+	   && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+    TREE_TYPE (*node)
+      = build_pointer_type
+	(build_type_variant (TREE_TYPE (type), 1,
+			     TREE_THIS_VOLATILE (TREE_TYPE (type))));
+  else
+    gcc_unreachable ();
+
+  return NULL_TREE;
+}
+
+
+/* Handle a "malloc" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_malloc_attribute (tree *node, tree ARG_UNUSED (name),
+			 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			 bool * ARG_UNUSED (no_add_attrs))
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL
+      && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node))))
+    DECL_IS_MALLOC (*node) = 1;
+  else
+    gcc_unreachable ();
+
+  return NULL_TREE;
+}
+
+
+/* Handle a "pure" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_pure_attribute (tree *node, tree ARG_UNUSED (name),
+		       tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+		       bool * ARG_UNUSED (no_add_attrs))
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    DECL_PURE_P (*node) = 1;
+  else
+    gcc_unreachable ();
+
+  return NULL_TREE;
+}
+
+
+/* Handle a "no vops" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_novops_attribute (tree *node, tree ARG_UNUSED (name),
+			 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			 bool *ARG_UNUSED (no_add_attrs))
+{
+  gcc_assert (TREE_CODE (*node) == FUNCTION_DECL);
+  DECL_IS_NOVOPS (*node) = 1;
+  return NULL_TREE;
+}
+
+
+/* Helper for nonnull attribute handling; fetch the operand number
+   from the attribute argument list.  */
+
+static bool
+get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp)
+{
+  /* Verify the arg number is a constant.  */
+  if (TREE_CODE (arg_num_expr) != INTEGER_CST
+      || TREE_INT_CST_HIGH (arg_num_expr) != 0)
+    return false;
+
+  *valp = TREE_INT_CST_LOW (arg_num_expr);
+  return true;
+}
+
+/* Handle the "nonnull" attribute.  */
+
+static tree
+handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name),
+			  tree args, int ARG_UNUSED (flags),
+			  bool * ARG_UNUSED (no_add_attrs))
+{
+  tree type = *node;
+
+  /* If no arguments are specified, all pointer arguments should be
+     non-null.  Verify a full prototype is given so that the arguments
+     will have the correct types when we actually check them later.  */
+  if (!args)
+    {
+      gcc_assert (prototype_p (type));
+      return NULL_TREE;
+    }
+
+  /* Argument list specified.  Verify that each argument number references
+     a pointer argument.  */
+  for (; args; args = TREE_CHAIN (args))
+    {
+      tree argument;
+      unsigned HOST_WIDE_INT arg_num = 0, ck_num;
+
+      if (!get_nonnull_operand (TREE_VALUE (args), &arg_num))
+	gcc_unreachable ();
+
+      argument = TYPE_ARG_TYPES (type);
+      if (argument)
+	{
+	  for (ck_num = 1; ; ck_num++)
+	    {
+	      if (!argument || ck_num == arg_num)
+		break;
+	      argument = TREE_CHAIN (argument);
+	    }
+
+	  gcc_assert (argument
+		      && TREE_CODE (TREE_VALUE (argument)) == POINTER_TYPE);
+	}
+    }
+
+  return NULL_TREE;
+}
+
+
+/* Handle a "nothrow" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_nothrow_attribute (tree *node, tree ARG_UNUSED (name),
+			  tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			  bool * ARG_UNUSED (no_add_attrs))
+{
+  if (TREE_CODE (*node) == FUNCTION_DECL)
+    TREE_NOTHROW (*node) = 1;
+  else
+    gcc_unreachable ();
+
+  return NULL_TREE;
+}
+
+
+/* Handle a "sentinel" attribute.  */
+
+static tree
+handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args,
+			   int ARG_UNUSED (flags),
+			   bool * ARG_UNUSED (no_add_attrs))
+{
+  gcc_assert (stdarg_p (*node));
+
+  if (args)
+    {
+      tree position = TREE_VALUE (args);
+      gcc_assert (TREE_CODE (position) == INTEGER_CST);
+      if (tree_int_cst_lt (position, integer_zero_node))
+	gcc_unreachable ();
+    }
+
+  return NULL_TREE;
+}
+
+/* Handle a "type_generic" attribute.  */
+
+static tree
+handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name),
+			       tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			       bool * ARG_UNUSED (no_add_attrs))
+{
+  /* Ensure we have a function type.  */
+  gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE);
+  
+  /* Ensure we have a variadic function.  */
+  gcc_assert (!prototype_p (*node) || stdarg_p (*node));
+
+  return NULL_TREE;
+}
+
+/* Handle a "transaction_pure" attribute.  */
+
+static tree
+handle_transaction_pure_attribute (tree *node, tree ARG_UNUSED (name),
+				   tree ARG_UNUSED (args),
+				   int ARG_UNUSED (flags),
+				   bool * ARG_UNUSED (no_add_attrs))
+{
+  /* Ensure we have a function type.  */
+  gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE);
+
+  return NULL_TREE;
+}
+
+/* Handle a "returns_twice" attribute.  */
+
+static tree
+handle_returns_twice_attribute (tree *node, tree ARG_UNUSED (name),
+				tree ARG_UNUSED (args),
+				int ARG_UNUSED (flags),
+				bool * ARG_UNUSED (no_add_attrs))
+{
+  gcc_assert (TREE_CODE (*node) == FUNCTION_DECL);
+
+  DECL_IS_RETURNS_TWICE (*node) = 1;
+
+  return NULL_TREE;
+}
+
+/* Ignore the given attribute.  Used when this attribute may be usefully
+   overridden by the target, but is not used generically.  */
+
+static tree
+ignore_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+		  tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+		  bool *no_add_attrs)
+{
+  *no_add_attrs = true;
+  return NULL_TREE;
+}
+
+/* Handle a "format" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_format_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+			 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			 bool *no_add_attrs)
+{
+  *no_add_attrs = true;
+  return NULL_TREE;
+}
+
+
+/* Handle a "format_arg" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+tree
+handle_format_arg_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+			     tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+			     bool *no_add_attrs)
+{
+  *no_add_attrs = true;
+  return NULL_TREE;
+}
+
+
+/* Handle a "fn spec" attribute; arguments as in
+   struct attribute_spec.handler.  */
+
+static tree
+handle_fnspec_attribute (tree *node ATTRIBUTE_UNUSED, tree ARG_UNUSED (name),
+			 tree args, int ARG_UNUSED (flags),
+			 bool *no_add_attrs ATTRIBUTE_UNUSED)
+{
+  gcc_assert (args
+	      && TREE_CODE (TREE_VALUE (args)) == STRING_CST
+	      && !TREE_CHAIN (args));
+  return NULL_TREE;
+}
+
+/* Cribbed from c-common.c.  */
+
+static void
+def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...)
+{
+  tree t;
+  tree *args = XALLOCAVEC (tree, n);
+  va_list list;
+  int i;
+
+  va_start (list, n);
+  for (i = 0; i < n; ++i)
+    {
+      builtin_type a = (builtin_type) va_arg (list, int);
+      t = builtin_types[a];
+      if (t == error_mark_node)
+	goto egress;
+      args[i] = t;
+    }
+  va_end (list);
+
+  t = builtin_types[ret];
+  if (t == error_mark_node)
+    goto egress;
+  if (var)
+    t = build_varargs_function_type_array (t, n, args);
+  else
+    t = build_function_type_array (t, n, args);
+
+ egress:
+  builtin_types[def] = t;
+  va_end (list);
+}
+
+/* Used to help initialize the builtin-types.def table.  When a type of
+   the correct size doesn't exist, use error_mark_node instead of NULL.
+   The later results in segfaults even when a decl using the type doesn't
+   get invoked.  */
+
+static tree
+builtin_type_for_size (int size, bool unsignedp)
+{
+  tree type = lto_type_for_size (size, unsignedp);
+  return type ? type : error_mark_node;
+}
+
+/* Support for DEF_BUILTIN.  */
+
+static void
+def_builtin_1 (enum built_in_function fncode, const char *name,
+	       enum built_in_class fnclass, tree fntype, tree libtype,
+	       bool both_p, bool fallback_p, bool nonansi_p,
+	       tree fnattrs, bool implicit_p)
+{
+  tree decl;
+  const char *libname;
+
+  if (fntype == error_mark_node)
+    return;
+
+  libname = name + strlen ("__builtin_");
+  decl = add_builtin_function (name, fntype, fncode, fnclass,
+			       (fallback_p ? libname : NULL),
+			       fnattrs);
+
+  if (both_p
+      && !flag_no_builtin
+      && !(nonansi_p && flag_no_nonansi_builtin))
+    add_builtin_function (libname, libtype, fncode, fnclass,
+			  NULL, fnattrs);
+
+  set_builtin_decl (fncode, decl, implicit_p);
+}
+
+
+/* Initialize the attribute table for all the supported builtins.  */
+
+static void
+lto_init_attributes (void)
+{
+  /* Fill in the built_in_attributes array.  */
+#define DEF_ATTR_NULL_TREE(ENUM)				\
+  built_in_attributes[(int) ENUM] = NULL_TREE;
+#define DEF_ATTR_INT(ENUM, VALUE)				\
+  built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE);
+#define DEF_ATTR_STRING(ENUM, VALUE)				\
+  built_in_attributes[(int) ENUM] = build_string (strlen (VALUE), VALUE);
+#define DEF_ATTR_IDENT(ENUM, STRING)				\
+  built_in_attributes[(int) ENUM] = get_identifier (STRING);
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN)	\
+  built_in_attributes[(int) ENUM]			\
+    = tree_cons (built_in_attributes[(int) PURPOSE],	\
+		 built_in_attributes[(int) VALUE],	\
+		 built_in_attributes[(int) CHAIN]);
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_STRING
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+}
+
+/* Create builtin types and functions.  VA_LIST_REF_TYPE_NODE and
+   VA_LIST_ARG_TYPE_NODE are used in builtin-types.def.  */
+
+static void
+lto_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED,
+		     tree va_list_arg_type_node ATTRIBUTE_UNUSED)
+{
+#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
+  builtin_types[ENUM] = VALUE;
+#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
+  def_fn_type (ENUM, RETURN, 0, 0);
+#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
+  def_fn_type (ENUM, RETURN, 0, 1, ARG1);
+#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
+  def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+  def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+  def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5)	\
+  def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+			    ARG6)					\
+  def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
+#define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+			    ARG6, ARG7)					\
+  def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
+#define DEF_FUNCTION_TYPE_8(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+			    ARG6, ARG7, ARG8)				\
+  def_fn_type (ENUM, RETURN, 0, 8, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6,	\
+	       ARG7, ARG8);
+#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
+  def_fn_type (ENUM, RETURN, 1, 0);
+#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
+  def_fn_type (ENUM, RETURN, 1, 1, ARG1);
+#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
+  def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+  def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+  def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+  def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_POINTER_TYPE(ENUM, TYPE) \
+  builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
+
+#include "builtin-types.def"
+
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+  builtin_types[(int) BT_LAST] = NULL_TREE;
+
+  lto_init_attributes ();
+
+#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P,\
+		    NONANSI_P, ATTRS, IMPLICIT, COND)			\
+    if (NAME && COND)							\
+      def_builtin_1 (ENUM, NAME, CLASS, builtin_types[(int) TYPE],	\
+		     builtin_types[(int) LIBTYPE], BOTH_P, FALLBACK_P,	\
+		     NONANSI_P, built_in_attributes[(int) ATTRS], IMPLICIT);
+#include "builtins.def"
+#undef DEF_BUILTIN
+}
+
+static GTY(()) tree registered_builtin_types;
+
+/* Language hooks.  */
+
+static unsigned int
+lto_option_lang_mask (void)
+{
+  return CL_LTO;
+}
+
+static bool
+lto_complain_wrong_lang_p (const struct cl_option *option ATTRIBUTE_UNUSED)
+{
+  /* The LTO front end inherits all the options from the first front
+     end that was used.  However, not all the original front end
+     options make sense in LTO.
+
+     A real solution would be to filter this in collect2, but collect2
+     does not have access to all the option attributes to know what to
+     filter.  So, in lto1 we silently accept inherited flags and do
+     nothing about it.  */
+  return false;
+}
+
+static void
+lto_init_options_struct (struct gcc_options *opts)
+{
+  /* By default, C99-like requirements for complex multiply and divide.
+     ???  Until the complex method is encoded in the IL this is the only
+     safe choice.  This will pessimize Fortran code with LTO unless
+     people specify a complex method manually or use -ffast-math.  */
+  opts->x_flag_complex_method = 2;
+}
+
+/* Handle command-line option SCODE.  If the option takes an argument, it is
+   stored in ARG, which is otherwise NULL.  VALUE holds either a numerical
+   argument or a binary value indicating whether the positive or negative form
+   of the option was supplied.  */
+
+const char *resolution_file_name;
+static bool
+lto_handle_option (size_t scode, const char *arg,
+		   int value ATTRIBUTE_UNUSED, int kind ATTRIBUTE_UNUSED,
+		   location_t loc ATTRIBUTE_UNUSED,
+		   const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
+{
+  enum opt_code code = (enum opt_code) scode;
+  bool result = true;
+
+  switch (code)
+    {
+    case OPT_fresolution_:
+      resolution_file_name = arg;
+      break;
+
+    case OPT_Wabi:
+      warn_psabi = value;
+      break;
+
+    case OPT_fwpa:
+      flag_wpa = value ? "" : NULL;
+      break;
+
+    default:
+      break;
+    }
+
+  return result;
+}
+
+/* Perform post-option processing.  Does additional initialization based on
+   command-line options.  PFILENAME is the main input filename.  Returns false
+   to enable subsequent back-end initialization.  */
+
+static bool
+lto_post_options (const char **pfilename ATTRIBUTE_UNUSED)
+{
+  /* -fltrans and -fwpa are mutually exclusive.  Check for that here.  */
+  if (flag_wpa && flag_ltrans)
+    error ("-fwpa and -fltrans are mutually exclusive");
+
+  if (flag_ltrans)
+    {
+      flag_generate_lto = 0;
+
+      /* During LTRANS, we are not looking at the whole program, only
+	 a subset of the whole callgraph.  */
+      flag_whole_program = 0;
+    }
+
+  if (flag_wpa)
+    flag_generate_lto = 1;
+
+  /* Excess precision other than "fast" requires front-end
+     support.  */
+  flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
+
+  /* Initialize the compiler back end.  */
+  return false;
+}
+
+/* Return an integer type with PRECISION bits of precision,
+   that is unsigned if UNSIGNEDP is nonzero, otherwise signed.  */
+
+static tree
+lto_type_for_size (unsigned precision, int unsignedp)
+{
+  if (precision == TYPE_PRECISION (integer_type_node))
+    return unsignedp ? unsigned_type_node : integer_type_node;
+
+  if (precision == TYPE_PRECISION (signed_char_type_node))
+    return unsignedp ? unsigned_char_type_node : signed_char_type_node;
+
+  if (precision == TYPE_PRECISION (short_integer_type_node))
+    return unsignedp ? short_unsigned_type_node : short_integer_type_node;
+
+  if (precision == TYPE_PRECISION (long_integer_type_node))
+    return unsignedp ? long_unsigned_type_node : long_integer_type_node;
+
+  if (precision == TYPE_PRECISION (long_long_integer_type_node))
+    return unsignedp
+	   ? long_long_unsigned_type_node
+	   : long_long_integer_type_node;
+
+  if (precision <= TYPE_PRECISION (intQI_type_node))
+    return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
+
+  if (precision <= TYPE_PRECISION (intHI_type_node))
+    return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
+
+  if (precision <= TYPE_PRECISION (intSI_type_node))
+    return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
+
+  if (precision <= TYPE_PRECISION (intDI_type_node))
+    return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
+
+  if (precision <= TYPE_PRECISION (intTI_type_node))
+    return unsignedp ? unsigned_intTI_type_node : intTI_type_node;
+
+  return NULL_TREE;
+}
+
+
+/* Return a data type that has machine mode MODE.
+   If the mode is an integer,
+   then UNSIGNEDP selects between signed and unsigned types.
+   If the mode is a fixed-point mode,
+   then UNSIGNEDP selects between saturating and nonsaturating types.  */
+
+static tree
+lto_type_for_mode (enum machine_mode mode, int unsigned_p)
+{
+  tree t;
+
+  if (mode == TYPE_MODE (integer_type_node))
+    return unsigned_p ? unsigned_type_node : integer_type_node;
+
+  if (mode == TYPE_MODE (signed_char_type_node))
+    return unsigned_p ? unsigned_char_type_node : signed_char_type_node;
+
+  if (mode == TYPE_MODE (short_integer_type_node))
+    return unsigned_p ? short_unsigned_type_node : short_integer_type_node;
+
+  if (mode == TYPE_MODE (long_integer_type_node))
+    return unsigned_p ? long_unsigned_type_node : long_integer_type_node;
+
+  if (mode == TYPE_MODE (long_long_integer_type_node))
+    return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node;
+
+  if (mode == QImode)
+    return unsigned_p ? unsigned_intQI_type_node : intQI_type_node;
+
+  if (mode == HImode)
+    return unsigned_p ? unsigned_intHI_type_node : intHI_type_node;
+
+  if (mode == SImode)
+    return unsigned_p ? unsigned_intSI_type_node : intSI_type_node;
+
+  if (mode == DImode)
+    return unsigned_p ? unsigned_intDI_type_node : intDI_type_node;
+
+#if HOST_BITS_PER_WIDE_INT >= 64
+  if (mode == TYPE_MODE (intTI_type_node))
+    return unsigned_p ? unsigned_intTI_type_node : intTI_type_node;
+#endif
+
+  if (mode == TYPE_MODE (float_type_node))
+    return float_type_node;
+
+  if (mode == TYPE_MODE (double_type_node))
+    return double_type_node;
+
+  if (mode == TYPE_MODE (long_double_type_node))
+    return long_double_type_node;
+
+  if (mode == TYPE_MODE (void_type_node))
+    return void_type_node;
+
+  if (mode == TYPE_MODE (build_pointer_type (char_type_node)))
+    return (unsigned_p
+	    ? make_unsigned_type (GET_MODE_PRECISION (mode))
+	    : make_signed_type (GET_MODE_PRECISION (mode)));
+
+  if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
+    return (unsigned_p
+	    ? make_unsigned_type (GET_MODE_PRECISION (mode))
+	    : make_signed_type (GET_MODE_PRECISION (mode)));
+
+  if (COMPLEX_MODE_P (mode))
+    {
+      enum machine_mode inner_mode;
+      tree inner_type;
+
+      if (mode == TYPE_MODE (complex_float_type_node))
+	return complex_float_type_node;
+      if (mode == TYPE_MODE (complex_double_type_node))
+	return complex_double_type_node;
+      if (mode == TYPE_MODE (complex_long_double_type_node))
+	return complex_long_double_type_node;
+
+      if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p)
+	return complex_integer_type_node;
+
+      inner_mode = GET_MODE_INNER (mode);
+      inner_type = lto_type_for_mode (inner_mode, unsigned_p);
+      if (inner_type != NULL_TREE)
+	return build_complex_type (inner_type);
+    }
+  else if (VECTOR_MODE_P (mode))
+    {
+      enum machine_mode inner_mode = GET_MODE_INNER (mode);
+      tree inner_type = lto_type_for_mode (inner_mode, unsigned_p);
+      if (inner_type != NULL_TREE)
+	return build_vector_type_for_mode (inner_type, mode);
+    }
+
+  if (mode == TYPE_MODE (dfloat32_type_node))
+    return dfloat32_type_node;
+  if (mode == TYPE_MODE (dfloat64_type_node))
+    return dfloat64_type_node;
+  if (mode == TYPE_MODE (dfloat128_type_node))
+    return dfloat128_type_node;
+
+  if (ALL_SCALAR_FIXED_POINT_MODE_P (mode))
+    {
+      if (mode == TYPE_MODE (short_fract_type_node))
+	return unsigned_p ? sat_short_fract_type_node : short_fract_type_node;
+      if (mode == TYPE_MODE (fract_type_node))
+	return unsigned_p ? sat_fract_type_node : fract_type_node;
+      if (mode == TYPE_MODE (long_fract_type_node))
+	return unsigned_p ? sat_long_fract_type_node : long_fract_type_node;
+      if (mode == TYPE_MODE (long_long_fract_type_node))
+	return unsigned_p ? sat_long_long_fract_type_node
+			 : long_long_fract_type_node;
+
+      if (mode == TYPE_MODE (unsigned_short_fract_type_node))
+	return unsigned_p ? sat_unsigned_short_fract_type_node
+			 : unsigned_short_fract_type_node;
+      if (mode == TYPE_MODE (unsigned_fract_type_node))
+	return unsigned_p ? sat_unsigned_fract_type_node
+			 : unsigned_fract_type_node;
+      if (mode == TYPE_MODE (unsigned_long_fract_type_node))
+	return unsigned_p ? sat_unsigned_long_fract_type_node
+			 : unsigned_long_fract_type_node;
+      if (mode == TYPE_MODE (unsigned_long_long_fract_type_node))
+	return unsigned_p ? sat_unsigned_long_long_fract_type_node
+			 : unsigned_long_long_fract_type_node;
+
+      if (mode == TYPE_MODE (short_accum_type_node))
+	return unsigned_p ? sat_short_accum_type_node : short_accum_type_node;
+      if (mode == TYPE_MODE (accum_type_node))
+	return unsigned_p ? sat_accum_type_node : accum_type_node;
+      if (mode == TYPE_MODE (long_accum_type_node))
+	return unsigned_p ? sat_long_accum_type_node : long_accum_type_node;
+      if (mode == TYPE_MODE (long_long_accum_type_node))
+	return unsigned_p ? sat_long_long_accum_type_node
+			 : long_long_accum_type_node;
+
+      if (mode == TYPE_MODE (unsigned_short_accum_type_node))
+	return unsigned_p ? sat_unsigned_short_accum_type_node
+			 : unsigned_short_accum_type_node;
+      if (mode == TYPE_MODE (unsigned_accum_type_node))
+	return unsigned_p ? sat_unsigned_accum_type_node
+			 : unsigned_accum_type_node;
+      if (mode == TYPE_MODE (unsigned_long_accum_type_node))
+	return unsigned_p ? sat_unsigned_long_accum_type_node
+			 : unsigned_long_accum_type_node;
+      if (mode == TYPE_MODE (unsigned_long_long_accum_type_node))
+	return unsigned_p ? sat_unsigned_long_long_accum_type_node
+			 : unsigned_long_long_accum_type_node;
+
+      if (mode == QQmode)
+	return unsigned_p ? sat_qq_type_node : qq_type_node;
+      if (mode == HQmode)
+	return unsigned_p ? sat_hq_type_node : hq_type_node;
+      if (mode == SQmode)
+	return unsigned_p ? sat_sq_type_node : sq_type_node;
+      if (mode == DQmode)
+	return unsigned_p ? sat_dq_type_node : dq_type_node;
+      if (mode == TQmode)
+	return unsigned_p ? sat_tq_type_node : tq_type_node;
+
+      if (mode == UQQmode)
+	return unsigned_p ? sat_uqq_type_node : uqq_type_node;
+      if (mode == UHQmode)
+	return unsigned_p ? sat_uhq_type_node : uhq_type_node;
+      if (mode == USQmode)
+	return unsigned_p ? sat_usq_type_node : usq_type_node;
+      if (mode == UDQmode)
+	return unsigned_p ? sat_udq_type_node : udq_type_node;
+      if (mode == UTQmode)
+	return unsigned_p ? sat_utq_type_node : utq_type_node;
+
+      if (mode == HAmode)
+	return unsigned_p ? sat_ha_type_node : ha_type_node;
+      if (mode == SAmode)
+	return unsigned_p ? sat_sa_type_node : sa_type_node;
+      if (mode == DAmode)
+	return unsigned_p ? sat_da_type_node : da_type_node;
+      if (mode == TAmode)
+	return unsigned_p ? sat_ta_type_node : ta_type_node;
+
+      if (mode == UHAmode)
+	return unsigned_p ? sat_uha_type_node : uha_type_node;
+      if (mode == USAmode)
+	return unsigned_p ? sat_usa_type_node : usa_type_node;
+      if (mode == UDAmode)
+	return unsigned_p ? sat_uda_type_node : uda_type_node;
+      if (mode == UTAmode)
+	return unsigned_p ? sat_uta_type_node : uta_type_node;
+    }
+
+  for (t = registered_builtin_types; t; t = TREE_CHAIN (t))
+    if (TYPE_MODE (TREE_VALUE (t)) == mode)
+      return TREE_VALUE (t);
+
+  return NULL_TREE;
+}
+
+/* Return true if we are in the global binding level.  */
+
+static bool
+lto_global_bindings_p (void)
+{
+  return cfun == NULL;
+}
+
+static void
+lto_set_decl_assembler_name (tree decl)
+{
+  /* This is almost the same as lhd_set_decl_assembler_name, except that
+     we need to uniquify file-scope names, even if they are not
+     TREE_PUBLIC, to avoid conflicts between individual files.  */
+  tree id;
+
+  if (TREE_PUBLIC (decl))
+    id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
+  else
+    {
+      const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
+      char *label;
+
+      ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
+      id = get_identifier (label);
+    }
+
+  SET_DECL_ASSEMBLER_NAME (decl, id);
+}
+
+static tree
+lto_pushdecl (tree t ATTRIBUTE_UNUSED)
+{
+  /* Do nothing, since we get all information from DWARF and LTO
+     sections.  */
+  return NULL_TREE;
+}
+
+static tree
+lto_getdecls (void)
+{
+  /* We have our own write_globals langhook, hence the getdecls
+     langhook shouldn't be used, except by dbxout.c, so we can't
+     just abort here.  */
+  return NULL_TREE;
+}
+
+static void
+lto_write_globals (void)
+{
+  if (flag_wpa)
+    return;
+
+  /* Output debug info for global variables.  */  
+  varpool_node *vnode;
+  FOR_EACH_DEFINED_VARIABLE (vnode)
+    if (!decl_function_context (vnode->decl))
+      debug_hooks->global_decl (vnode->decl);
+}
+
+static tree
+lto_builtin_function (tree decl)
+{
+  return decl;
+}
+
+static void
+lto_register_builtin_type (tree type, const char *name)
+{
+  tree decl;
+
+  if (!TYPE_NAME (type))
+    {
+      decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL,
+			 get_identifier (name), type);
+      DECL_ARTIFICIAL (decl) = 1;
+      TYPE_NAME (type) = decl;
+    }
+
+  registered_builtin_types = tree_cons (0, type, registered_builtin_types);
+}
+
+/* Build nodes that would have be created by the C front-end; necessary
+   for including builtin-types.def and ultimately builtins.def.  */
+
+static void
+lto_build_c_type_nodes (void)
+{
+  gcc_assert (void_type_node);
+
+  void_list_node = build_tree_list (NULL_TREE, void_type_node);
+  string_type_node = build_pointer_type (char_type_node);
+  const_string_type_node
+    = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST));
+
+  if (strcmp (SIZE_TYPE, "unsigned int") == 0)
+    {
+      intmax_type_node = integer_type_node;
+      uintmax_type_node = unsigned_type_node;
+      signed_size_type_node = integer_type_node;
+    }
+  else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
+    {
+      intmax_type_node = long_integer_type_node;
+      uintmax_type_node = long_unsigned_type_node;
+      signed_size_type_node = long_integer_type_node;
+    }
+  else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0)
+    {
+      intmax_type_node = long_long_integer_type_node;
+      uintmax_type_node = long_long_unsigned_type_node;
+      signed_size_type_node = long_long_integer_type_node;
+    }
+  else
+    gcc_unreachable ();
+
+  wint_type_node = unsigned_type_node;
+  pid_type_node = integer_type_node;
+}
+
+/* Perform LTO-specific initialization.  */
+
+static bool
+lto_init (void)
+{
+  /* We need to generate LTO if running in WPA mode.  */
+  flag_generate_lto = (flag_wpa != NULL);
+
+  /* Create the basic integer types.  */
+  build_common_tree_nodes (flag_signed_char, flag_short_double);
+
+  /* The global tree for the main identifier is filled in by
+     language-specific front-end initialization that is not run in the
+     LTO back-end.  It appears that all languages that perform such
+     initialization currently do so in the same way, so we do it here.  */
+  if (main_identifier_node == NULL_TREE)
+    main_identifier_node = get_identifier ("main");
+
+  /* In the C++ front-end, fileptr_type_node is defined as a variant
+     copy of of ptr_type_node, rather than ptr_node itself.  The
+     distinction should only be relevant to the front-end, so we
+     always use the C definition here in lto1.  */
+  gcc_assert (fileptr_type_node == ptr_type_node);
+  gcc_assert (TYPE_MAIN_VARIANT (fileptr_type_node) == ptr_type_node);
+
+  ptrdiff_type_node = integer_type_node;
+
+  lto_build_c_type_nodes ();
+  gcc_assert (va_list_type_node);
+
+  if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
+    {
+      tree x = build_pointer_type (TREE_TYPE (va_list_type_node));
+      lto_define_builtins (x, x);
+    }
+  else
+    {
+      lto_define_builtins (va_list_type_node,
+			   build_reference_type (va_list_type_node));
+    }
+  
+  if (flag_cilkplus)
+    cilk_init_builtins ();
+
+  targetm.init_builtins ();
+  build_common_builtin_nodes ();
+
+  /* Assign names to the builtin types, otherwise they'll end up
+     as __unknown__ in debug info.
+     ???  We simply need to stop pre-seeding the streamer cache.
+     Below is modeled after from c-common.c:c_common_nodes_and_builtins  */
+#define NAME_TYPE(t,n) \
+  if (t) \
+    TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \
+			        get_identifier (n), t)
+  NAME_TYPE (integer_type_node, "int");
+  NAME_TYPE (char_type_node, "char");
+  NAME_TYPE (long_integer_type_node, "long int");
+  NAME_TYPE (unsigned_type_node, "unsigned int");
+  NAME_TYPE (long_unsigned_type_node, "long unsigned int");
+  NAME_TYPE (long_long_integer_type_node, "long long int");
+  NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int");
+  NAME_TYPE (short_integer_type_node, "short int");
+  NAME_TYPE (short_unsigned_type_node, "short unsigned int");
+  if (signed_char_type_node != char_type_node)
+    NAME_TYPE (signed_char_type_node, "signed char");
+  if (unsigned_char_type_node != char_type_node)
+    NAME_TYPE (unsigned_char_type_node, "unsigned char");
+  NAME_TYPE (float_type_node, "float");
+  NAME_TYPE (double_type_node, "double");
+  NAME_TYPE (long_double_type_node, "long double");
+  NAME_TYPE (void_type_node, "void");
+  NAME_TYPE (boolean_type_node, "bool");
+  NAME_TYPE (complex_float_type_node, "complex float");
+  NAME_TYPE (complex_double_type_node, "complex double");
+  NAME_TYPE (complex_long_double_type_node, "complex long double");
+  if (int128_integer_type_node)
+    NAME_TYPE (int128_integer_type_node, "__int128");
+#undef NAME_TYPE
+
+  /* Initialize LTO-specific data structures.  */
+  in_lto_p = true;
+
+  return true;
+}
+
+/* Initialize tree structures required by the LTO front end.  */
+
+static void lto_init_ts (void)
+{
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
+}
+
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU GIMPLE"
+#undef LANG_HOOKS_OPTION_LANG_MASK
+#define LANG_HOOKS_OPTION_LANG_MASK lto_option_lang_mask
+#undef LANG_HOOKS_COMPLAIN_WRONG_LANG_P
+#define LANG_HOOKS_COMPLAIN_WRONG_LANG_P lto_complain_wrong_lang_p
+#undef LANG_HOOKS_INIT_OPTIONS_STRUCT
+#define LANG_HOOKS_INIT_OPTIONS_STRUCT lto_init_options_struct
+#undef LANG_HOOKS_HANDLE_OPTION
+#define LANG_HOOKS_HANDLE_OPTION lto_handle_option
+#undef LANG_HOOKS_POST_OPTIONS
+#define LANG_HOOKS_POST_OPTIONS lto_post_options
+#undef LANG_HOOKS_GET_ALIAS_SET
+#define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set
+#undef LANG_HOOKS_TYPE_FOR_MODE
+#define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode
+#undef LANG_HOOKS_TYPE_FOR_SIZE
+#define LANG_HOOKS_TYPE_FOR_SIZE lto_type_for_size
+#undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
+#define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name
+#undef LANG_HOOKS_GLOBAL_BINDINGS_P
+#define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p
+#undef LANG_HOOKS_PUSHDECL
+#define LANG_HOOKS_PUSHDECL lto_pushdecl
+#undef LANG_HOOKS_GETDECLS
+#define LANG_HOOKS_GETDECLS lto_getdecls
+#undef LANG_HOOKS_WRITE_GLOBALS
+#define LANG_HOOKS_WRITE_GLOBALS lto_write_globals
+#undef LANG_HOOKS_REGISTER_BUILTIN_TYPE
+#define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type
+#undef LANG_HOOKS_BUILTIN_FUNCTION
+#define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT lto_init
+#undef LANG_HOOKS_PARSE_FILE
+#define LANG_HOOKS_PARSE_FILE lto_main
+#undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
+#define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
+#undef LANG_HOOKS_TYPES_COMPATIBLE_P
+#define LANG_HOOKS_TYPES_COMPATIBLE_P NULL
+#undef LANG_HOOKS_EH_PERSONALITY
+#define LANG_HOOKS_EH_PERSONALITY lto_eh_personality
+
+/* Attribute hooks.  */
+#undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
+#define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table
+#undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
+#define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table
+
+#undef LANG_HOOKS_BEGIN_SECTION
+#define LANG_HOOKS_BEGIN_SECTION lto_obj_begin_section
+#undef LANG_HOOKS_APPEND_DATA
+#define LANG_HOOKS_APPEND_DATA lto_obj_append_data
+#undef LANG_HOOKS_END_SECTION
+#define LANG_HOOKS_END_SECTION lto_obj_end_section
+
+#undef LANG_HOOKS_INIT_TS
+#define LANG_HOOKS_INIT_TS lto_init_ts
+
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
+
+/* Language hooks that are not part of lang_hooks.  */
+
+tree
+convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
+{
+  gcc_unreachable ();
+}
+
+/* Tree walking support.  */
+
+static enum lto_tree_node_structure_enum
+lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED)
+{
+  return TS_LTO_GENERIC;
+}
+
+#include "gtype-lto.h"
+#include "gt-lto-lto-lang.h"
diff --git a/gcc-4.9/gcc/lto/lto-object.c b/gcc-4.9/gcc/lto/lto-object.c
new file mode 100644
index 000000000..f43fb3a30
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto-object.c
@@ -0,0 +1,393 @@
+/* LTO routines to use object files.
+   Copyright (C) 2010-2014 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tree.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "diagnostic-core.h"
+#include "lto.h"
+#include "tm.h"
+#include "lto-streamer.h"
+#include "simple-object.h"
+
+/* Segment name for LTO sections.  This is only used for Mach-O.
+   FIXME: This needs to be kept in sync with darwin.c.  */
+
+#define LTO_SEGMENT_NAME "__GNU_LTO"
+
+/* An LTO file wrapped around an simple_object.  */
+
+struct lto_simple_object
+{
+  /* The base information.  */
+  lto_file base;
+
+  /* The system file descriptor.  */
+  int fd;
+
+  /* The simple_object if we are reading the file.  */
+  simple_object_read *sobj_r;
+
+  /* The simple_object if we are writing the file.  */
+  simple_object_write *sobj_w;
+
+  /* The currently active section.  */
+  simple_object_write_section *section;
+};
+
+/* Saved simple_object attributes.  FIXME: Once set, this is never
+   cleared.  */
+
+static simple_object_attributes *saved_attributes;
+
+/* Initialize FILE, an LTO file object for FILENAME.  */
+
+static void
+lto_file_init (lto_file *file, const char *filename, off_t offset)
+{
+  file->filename = filename;
+  file->offset = offset;
+}
+
+/* Open the file FILENAME.  It WRITABLE is true, the file is opened
+   for write and, if necessary, created.  Otherwise, the file is
+   opened for reading.  Returns the opened file.  */
+
+lto_file *
+lto_obj_file_open (const char *filename, bool writable)
+{
+  const char *offset_p;
+  long loffset;
+  int consumed;
+  char *fname;
+  off_t offset;
+  struct lto_simple_object *lo;
+  const char *errmsg;
+  int err;
+
+  offset_p = strrchr (filename, '@');
+  if (offset_p != NULL
+      && offset_p != filename
+      && sscanf (offset_p, "@%li%n", &loffset, &consumed) >= 1
+      && strlen (offset_p) == (unsigned int) consumed)
+    {
+      fname = XNEWVEC (char, offset_p - filename + 1);
+      memcpy (fname, filename, offset_p - filename);
+      fname[offset_p - filename] = '\0';
+      offset = (off_t) loffset;
+    }
+  else
+    {
+      fname = xstrdup (filename);
+      offset = 0;
+    }
+
+  lo = XCNEW (struct lto_simple_object);
+  lto_file_init ((lto_file *) lo, fname, offset);
+
+  lo->fd = open (fname,
+		 (writable
+		  ? O_WRONLY | O_CREAT | O_BINARY
+		  : O_RDONLY | O_BINARY),
+		 0666);
+  if (lo->fd == -1)
+    {
+      error ("open %s failed: %s", fname, xstrerror (errno));
+      goto fail;
+    }
+
+  if (!writable)
+    {
+      simple_object_attributes *attrs;
+
+      lo->sobj_r = simple_object_start_read (lo->fd, offset, LTO_SEGMENT_NAME,
+					     &errmsg, &err);
+      if (lo->sobj_r == NULL)
+	goto fail_errmsg;
+
+      attrs = simple_object_fetch_attributes (lo->sobj_r, &errmsg, &err);
+      if (attrs == NULL)
+	goto fail_errmsg;
+
+      if (saved_attributes == NULL)
+	saved_attributes = attrs;
+      else
+	{
+	  errmsg = simple_object_attributes_merge (saved_attributes, attrs,
+						   &err);
+	  if (errmsg != NULL)
+	    {
+	      free (attrs);
+	      goto fail_errmsg;
+	    }
+	}
+    }
+  else
+    {
+      gcc_assert (saved_attributes != NULL);
+      lo->sobj_w = simple_object_start_write (saved_attributes,
+					      LTO_SEGMENT_NAME,
+					      &errmsg, &err);
+      if (lo->sobj_w == NULL)
+	goto fail_errmsg;
+    }
+
+  return &lo->base;
+
+ fail_errmsg:
+  if (err == 0)
+    error ("%s: %s", fname, errmsg);
+  else
+    error ("%s: %s: %s", fname, errmsg, xstrerror (err));
+					 
+ fail:
+  if (lo->fd != -1)
+    lto_obj_file_close ((lto_file *) lo);
+  free (lo);
+  return NULL;
+}
+
+
+/* Close FILE.  If FILE was opened for writing, it is written out
+   now.  */
+
+void
+lto_obj_file_close (lto_file *file)
+{
+  struct lto_simple_object *lo = (struct lto_simple_object *) file;
+
+  if (lo->sobj_r != NULL)
+    simple_object_release_read (lo->sobj_r);
+  else if (lo->sobj_w != NULL)
+    {
+      const char *errmsg;
+      int err;
+
+      gcc_assert (lo->base.offset == 0);
+
+      errmsg = simple_object_write_to_file (lo->sobj_w, lo->fd, &err);
+      if (errmsg != NULL)
+	{
+	  if (err == 0)
+	    fatal_error ("%s", errmsg);
+	  else
+	    fatal_error ("%s: %s", errmsg, xstrerror (err));
+	}
+
+      simple_object_release_write (lo->sobj_w);
+    }
+
+  if (lo->fd != -1)
+    {
+      if (close (lo->fd) < 0)
+	fatal_error ("close: %s", xstrerror (errno));
+    }
+}
+
+/* This is passed to lto_obj_add_section.  */
+
+struct lto_obj_add_section_data
+{
+  /* The hash table of sections.  */
+  htab_t section_hash_table;
+  /* The offset of this file.  */
+  off_t base_offset;
+  /* List in linker order */
+  struct lto_section_list *list;
+};
+
+/* This is called for each section in the file.  */
+
+static int
+lto_obj_add_section (void *data, const char *name, off_t offset,
+		     off_t length)
+{
+  struct lto_obj_add_section_data *loasd =
+    (struct lto_obj_add_section_data *) data;
+  htab_t section_hash_table = (htab_t) loasd->section_hash_table;
+  char *new_name;
+  struct lto_section_slot s_slot;
+  void **slot;
+  struct lto_section_list *list = loasd->list;
+
+  if (strncmp (name, LTO_SECTION_NAME_PREFIX,
+	       strlen (LTO_SECTION_NAME_PREFIX)) != 0)
+    return 1;
+
+  new_name = xstrdup (name);
+  s_slot.name = new_name;
+  slot = htab_find_slot (section_hash_table, &s_slot, INSERT);
+  if (*slot == NULL)
+    {
+      struct lto_section_slot *new_slot = XCNEW (struct lto_section_slot);
+
+      new_slot->name = new_name;
+      new_slot->start = loasd->base_offset + offset;
+      new_slot->len = length;
+      *slot = new_slot;
+
+      if (list != NULL)
+        {
+          if (!list->first)
+            list->first = new_slot;
+          if (list->last)
+            list->last->next = new_slot;
+          list->last = new_slot;
+        }
+    }
+  else
+    {
+      error ("two or more sections for %s", new_name);
+      return 0;
+    }
+
+  return 1;
+}
+
+/* Build a hash table whose key is the section name and whose data is
+   the start and size of each section in the .o file.  */
+
+htab_t
+lto_obj_build_section_table (lto_file *lto_file, struct lto_section_list *list)
+{
+  struct lto_simple_object *lo = (struct lto_simple_object *) lto_file;
+  htab_t section_hash_table;
+  struct lto_obj_add_section_data loasd;
+  const char *errmsg;
+  int err;
+
+  section_hash_table = lto_obj_create_section_hash_table ();
+
+  gcc_assert (lo->sobj_r != NULL && lo->sobj_w == NULL);
+  loasd.section_hash_table = section_hash_table;
+  loasd.base_offset = lo->base.offset;
+  loasd.list = list;
+  errmsg = simple_object_find_sections (lo->sobj_r, lto_obj_add_section,
+					&loasd, &err);
+  if (errmsg != NULL)
+    {
+      if (err == 0)
+	error ("%s", errmsg);
+      else
+	error ("%s: %s", errmsg, xstrerror (err));
+      htab_delete (section_hash_table);
+      return NULL;
+    }
+
+  return section_hash_table;
+}
+
+/* The current output file.  */
+
+static lto_file *current_out_file;
+
+/* Set the current output file.  Return the old one.  */
+
+lto_file *
+lto_set_current_out_file (lto_file *file)
+{
+  lto_file *old_file;
+
+  old_file = current_out_file;
+  current_out_file = file;
+  return old_file;
+}
+
+/* Return the current output file.  */
+
+lto_file *
+lto_get_current_out_file (void)
+{
+  return current_out_file;
+}
+
+/* Begin writing a new section named NAME in the current output
+   file.  */
+
+void
+lto_obj_begin_section (const char *name)
+{
+  struct lto_simple_object *lo;
+  int align;
+  const char *errmsg;
+  int err;
+
+  lo = (struct lto_simple_object *) current_out_file;
+  gcc_assert (lo != NULL
+	      && lo->sobj_r == NULL
+	      && lo->sobj_w != NULL
+	      && lo->section == NULL);
+
+  align = exact_log2 (POINTER_SIZE / BITS_PER_UNIT);
+  lo->section = simple_object_write_create_section (lo->sobj_w, name, align,
+						    &errmsg, &err);
+  if (lo->section == NULL)
+    {
+      if (err == 0)
+	fatal_error ("%s", errmsg);
+      else
+	fatal_error ("%s: %s", errmsg, xstrerror (errno));
+    }
+}
+
+/* Add data to a section.  BLOCK is a pointer to memory containing
+   DATA.  */
+
+void
+lto_obj_append_data (const void *data, size_t len, void *block)
+{
+  struct lto_simple_object *lo;
+  const char *errmsg;
+  int err;
+
+  lo = (struct lto_simple_object *) current_out_file;
+  gcc_assert (lo != NULL && lo->section != NULL);
+
+  errmsg = simple_object_write_add_data (lo->sobj_w, lo->section, data, len,
+					 1, &err);
+  if (errmsg != NULL)
+    {
+      if (err == 0)
+	fatal_error ("%s", errmsg);
+      else
+	fatal_error ("%s: %s", errmsg, xstrerror (errno));
+    }
+
+  free (block);
+}
+
+/* Stop writing to the current output section.  */
+
+void
+lto_obj_end_section (void)
+{
+  struct lto_simple_object *lo;
+
+  lo = (struct lto_simple_object *) current_out_file;
+  gcc_assert (lo != NULL && lo->section != NULL);
+  lo->section = NULL;
+}
diff --git a/gcc-4.9/gcc/lto/lto-partition.c b/gcc-4.9/gcc/lto/lto-partition.c
new file mode 100644
index 000000000..1ee5fbb85
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto-partition.c
@@ -0,0 +1,945 @@
+/* LTO partitioning logic routines.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "toplev.h"
+#include "tree.h"
+#include "gcc-symtab.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "tm.h"
+#include "cgraph.h"
+#include "lto-streamer.h"
+#include "timevar.h"
+#include "params.h"
+#include "ipa-inline.h"
+#include "ipa-utils.h"
+#include "lto-partition.h"
+
+vec<ltrans_partition> ltrans_partitions;
+
+static void add_symbol_to_partition (ltrans_partition part, symtab_node *node);
+
+
+/* Create new partition with name NAME.  */
+
+static ltrans_partition
+new_partition (const char *name)
+{
+  ltrans_partition part = XCNEW (struct ltrans_partition_def);
+  part->encoder = lto_symtab_encoder_new (false);
+  part->name = name;
+  part->insns = 0;
+  ltrans_partitions.safe_push (part);
+  return part;
+}
+
+/* Free memory used by ltrans datastructures.  */
+
+void
+free_ltrans_partitions (void)
+{
+  unsigned int idx;
+  ltrans_partition part;
+  for (idx = 0; ltrans_partitions.iterate (idx, &part); idx++)
+    {
+      if (part->initializers_visited)
+	pointer_set_destroy (part->initializers_visited);
+      /* Symtab encoder is freed after streaming.  */
+      free (part);
+    }
+  ltrans_partitions.release ();
+}
+
+/* Return true if symbol is already in some partition.  */
+
+static inline bool
+symbol_partitioned_p (symtab_node *node)
+{
+  return node->aux;
+}
+
+/* Add references into the partition.  */
+static void
+add_references_to_partition (ltrans_partition part, symtab_node *node)
+{
+  int i;
+  struct ipa_ref *ref;
+
+  /* Add all duplicated references to the partition.  */
+  for (i = 0; ipa_ref_list_reference_iterate (&node->ref_list, i, ref); i++)
+    if (symtab_get_symbol_partitioning_class (ref->referred) == SYMBOL_DUPLICATE)
+      add_symbol_to_partition (part, ref->referred);
+    /* References to a readonly variable may be constant foled into its value.
+       Recursively look into the initializers of the constant variable and add
+       references, too.  */
+    else if (is_a <varpool_node> (ref->referred)
+	     && ctor_for_folding (ref->referred->decl) != error_mark_node
+	     && !lto_symtab_encoder_in_partition_p (part->encoder, ref->referred))
+      {
+	if (!part->initializers_visited)
+	  part->initializers_visited = pointer_set_create ();
+	if (!pointer_set_insert (part->initializers_visited, ref->referred))
+	  add_references_to_partition (part, ref->referred);
+      }
+}
+
+/* Helper function for add_symbol_to_partition doing the actual dirty work
+   of adding NODE to PART.  */
+
+static bool
+add_symbol_to_partition_1 (ltrans_partition part, symtab_node *node)
+{
+  enum symbol_partitioning_class c = symtab_get_symbol_partitioning_class (node);
+  int i;
+  struct ipa_ref *ref;
+  symtab_node *node1;
+
+  /* If NODE is already there, we have nothing to do.  */
+  if (lto_symtab_encoder_in_partition_p (part->encoder, node))
+    return true;
+
+  /* non-duplicated aliases or tunks of a duplicated symbol needs to be output
+     just once.
+
+     Be lax about comdats; they may or may not be duplicated and we may
+     end up in need to duplicate keyed comdat because it has unkeyed alias.  */
+  if (c == SYMBOL_PARTITION && !DECL_COMDAT (node->decl)
+      && symbol_partitioned_p (node))
+    return false;
+
+  /* Be sure that we never try to duplicate partitioned symbol
+     or add external symbol.  */
+  gcc_assert (c != SYMBOL_EXTERNAL
+	      && (c == SYMBOL_DUPLICATE || !symbol_partitioned_p (node)));
+
+  lto_set_symtab_encoder_in_partition (part->encoder, node);
+
+  if (symbol_partitioned_p (node))
+    {
+      node->in_other_partition = 1;
+      if (cgraph_dump_file)
+        fprintf (cgraph_dump_file, "Symbol node %s now used in multiple partitions\n",
+		 node->name ());
+    }
+  node->aux = (void *)((size_t)node->aux + 1);
+
+  if (cgraph_node *cnode = dyn_cast <cgraph_node> (node))
+    {
+      struct cgraph_edge *e;
+      if (!node->alias)
+        part->insns += inline_summary (cnode)->self_size;
+
+      /* Add all inline clones and callees that are duplicated.  */
+      for (e = cnode->callees; e; e = e->next_callee)
+	if (!e->inline_failed)
+	  add_symbol_to_partition_1 (part, e->callee);
+	else if (symtab_get_symbol_partitioning_class (e->callee) == SYMBOL_DUPLICATE)
+	  add_symbol_to_partition (part, e->callee);
+
+      /* Add all thunks associated with the function.  */
+      for (e = cnode->callers; e; e = e->next_caller)
+	if (e->caller->thunk.thunk_p)
+	  add_symbol_to_partition_1 (part, e->caller);
+    }
+
+  add_references_to_partition (part, node);
+
+  /* Add all aliases associated with the symbol.  */
+  for (i = 0; ipa_ref_list_referring_iterate (&node->ref_list, i, ref); i++)
+    if (ref->use == IPA_REF_ALIAS && !node->weakref)
+      add_symbol_to_partition_1 (part, ref->referring);
+
+  /* Ensure that SAME_COMDAT_GROUP lists all allways added in a group.  */
+  if (node->same_comdat_group)
+    for (node1 = node->same_comdat_group;
+	 node1 != node; node1 = node1->same_comdat_group)
+      if (!node->alias)
+	{
+	  bool added = add_symbol_to_partition_1 (part, node1);
+	  gcc_assert (added);
+	}
+  return true;
+}
+
+/* If symbol NODE is really part of other symbol's definition (i.e. it is
+   internal label, thunk, alias or so), return the outer symbol. 
+   When add_symbol_to_partition_1 is called on the outer symbol it must
+   eventually add NODE, too.  */
+static symtab_node *
+contained_in_symbol (symtab_node *node)
+{
+  /* Weakrefs are never contained in anything.  */
+  if (node->weakref)
+    return node;
+  if (cgraph_node *cnode = dyn_cast <cgraph_node> (node))
+    {
+      cnode = cgraph_function_node (cnode, NULL);
+      if (cnode->global.inlined_to)
+	cnode = cnode->global.inlined_to;
+      return cnode;
+    }
+  else if (varpool_node *vnode = dyn_cast <varpool_node> (node))
+    return varpool_variable_node (vnode, NULL);
+  return node;
+}
+
+/* Add symbol NODE to partition.  When definition of NODE is part
+   of other symbol definition, add the other symbol, too.  */
+
+static void
+add_symbol_to_partition (ltrans_partition part, symtab_node *node)
+{
+  symtab_node *node1;
+
+  /* Verify that we do not try to duplicate something that can not be.  */
+  gcc_checking_assert (symtab_get_symbol_partitioning_class (node) == SYMBOL_DUPLICATE
+		       || !symbol_partitioned_p (node));
+
+  while ((node1 = contained_in_symbol (node)) != node)
+    node = node1;
+
+  /* If we have duplicated symbol contained in something we can not duplicate,
+     we are very badly screwed.  The other way is possible, so we do not
+     assert this in add_symbol_to_partition_1. 
+
+     Be lax about comdats; they may or may not be duplicated and we may
+     end up in need to duplicate keyed comdat because it has unkeyed alias.  */
+
+  gcc_assert (symtab_get_symbol_partitioning_class (node) == SYMBOL_DUPLICATE
+	      || DECL_COMDAT (node->decl)
+	      || !symbol_partitioned_p (node));
+
+  add_symbol_to_partition_1 (part, node);
+}
+
+/* Undo all additions until number of cgraph nodes in PARITION is N_CGRAPH_NODES
+   and number of varpool nodes is N_VARPOOL_NODES.  */
+
+static void
+undo_partition (ltrans_partition partition, unsigned int n_nodes)
+{
+  while (lto_symtab_encoder_size (partition->encoder) > (int)n_nodes)
+    {
+      symtab_node *node = lto_symtab_encoder_deref (partition->encoder,
+						   n_nodes);
+      cgraph_node *cnode;
+
+      /* After UNDO we no longer know what was visited.  */
+      if (partition->initializers_visited)
+	pointer_set_destroy (partition->initializers_visited);
+      partition->initializers_visited = NULL;
+
+      if (!node->alias && (cnode = dyn_cast <cgraph_node> (node)))
+        partition->insns -= inline_summary (cnode)->self_size;
+      lto_symtab_encoder_delete_node (partition->encoder, node);
+      node->aux = (void *)((size_t)node->aux - 1);
+    }
+}
+
+/* Group cgrah nodes by input files.  This is used mainly for testing
+   right now.  */
+
+void
+lto_1_to_1_map (void)
+{
+  symtab_node *node;
+  struct lto_file_decl_data *file_data;
+  struct pointer_map_t *pmap;
+  ltrans_partition partition;
+  void **slot;
+  int npartitions = 0;
+
+  pmap = pointer_map_create ();
+
+  FOR_EACH_SYMBOL (node)
+    {
+      if (symtab_get_symbol_partitioning_class (node) != SYMBOL_PARTITION
+	  || symbol_partitioned_p (node))
+	continue;
+
+      file_data = node->lto_file_data;
+
+      if (file_data)
+	{
+          slot = pointer_map_contains (pmap, file_data);
+          if (slot)
+	    partition = (ltrans_partition) *slot;
+	  else
+	    {
+	      partition = new_partition (file_data->file_name);
+	      slot = pointer_map_insert (pmap, file_data);
+	      *slot = partition;
+	      npartitions++;
+	    }
+	}
+      else if (!file_data && ltrans_partitions.length ())
+	partition = ltrans_partitions[0];
+      else
+	{
+	  partition = new_partition ("");
+	  slot = pointer_map_insert (pmap, NULL);
+	  *slot = partition;
+	  npartitions++;
+	}
+
+      add_symbol_to_partition (partition, node);
+    }
+
+  /* If the cgraph is empty, create one cgraph node set so that there is still
+     an output file for any variables that need to be exported in a DSO.  */
+  if (!npartitions)
+    new_partition ("empty");
+
+  pointer_map_destroy (pmap);
+
+}
+
+/* Maximal partitioning.  Put every new symbol into new partition if possible.  */
+
+void
+lto_max_map (void)
+{
+  symtab_node *node;
+  ltrans_partition partition;
+  int npartitions = 0;
+
+  FOR_EACH_SYMBOL (node)
+    {
+      if (symtab_get_symbol_partitioning_class (node) != SYMBOL_PARTITION
+	  || symbol_partitioned_p (node))
+	continue;
+      partition = new_partition (node->asm_name ());
+      add_symbol_to_partition (partition, node);
+      npartitions++;
+    }
+  if (!npartitions)
+    new_partition ("empty");
+}
+
+/* Helper function for qsort; sort nodes by order.  */
+static int
+node_cmp (const void *pa, const void *pb)
+{
+  const struct cgraph_node *a = *(const struct cgraph_node * const *) pa;
+  const struct cgraph_node *b = *(const struct cgraph_node * const *) pb;
+
+  /* Profile reorder flag enables function reordering based on first execution
+     of a function. All functions with profile are placed in ascending
+     order at the beginning.  */
+
+  if (flag_profile_reorder_functions)
+  {
+    /* Functions with time profile are sorted in ascending order.  */
+    if (a->tp_first_run && b->tp_first_run)
+      return a->tp_first_run != b->tp_first_run
+	? a->tp_first_run - b->tp_first_run
+        : a->order - b->order;
+
+    /* Functions with time profile are sorted before the functions
+       that do not have the profile.  */
+    if (a->tp_first_run || b->tp_first_run)
+      return b->tp_first_run - a->tp_first_run;
+  }
+
+  return b->order - a->order;
+}
+
+/* Helper function for qsort; sort nodes by order.  */
+static int
+varpool_node_cmp (const void *pa, const void *pb)
+{
+  const varpool_node *a = *(const varpool_node * const *) pa;
+  const varpool_node *b = *(const varpool_node * const *) pb;
+  return b->order - a->order;
+}
+
+/* Group cgraph nodes into equally-sized partitions.
+
+   The partitioning algorithm is simple: nodes are taken in predefined order.
+   The order corresponds to the order we want functions to have in the final
+   output.  In the future this will be given by function reordering pass, but
+   at the moment we use the topological order, which is a good approximation.
+
+   The goal is to partition this linear order into intervals (partitions) so
+   that all the partitions have approximately the same size and the number of
+   callgraph or IPA reference edges crossing boundaries is minimal.
+
+   This is a lot faster (O(n) in size of callgraph) than algorithms doing
+   priority-based graph clustering that are generally O(n^2) and, since
+   WHOPR is designed to make things go well across partitions, it leads
+   to good results.
+
+   We compute the expected size of a partition as:
+
+     max (total_size / lto_partitions, min_partition_size)
+
+   We use dynamic expected size of partition so small programs are partitioned
+   into enough partitions to allow use of multiple CPUs, while large programs
+   are not partitioned too much.  Creating too many partitions significantly
+   increases the streaming overhead.
+
+   In the future, we would like to bound the maximal size of partitions so as
+   to prevent the LTRANS stage from consuming too much memory.  At the moment,
+   however, the WPA stage is the most memory intensive for large benchmarks,
+   since too many types and declarations are read into memory.
+
+   The function implements a simple greedy algorithm.  Nodes are being added
+   to the current partition until after 3/4 of the expected partition size is
+   reached.  Past this threshold, we keep track of boundary size (number of
+   edges going to other partitions) and continue adding functions until after
+   the current partition has grown to twice the expected partition size.  Then
+   the process is undone to the point where the minimal ratio of boundary size
+   and in-partition calls was reached.  */
+
+void
+lto_balanced_map (void)
+{
+  int n_nodes = 0;
+  int n_varpool_nodes = 0, varpool_pos = 0, best_varpool_pos = 0;
+  struct cgraph_node **order = XNEWVEC (struct cgraph_node *, cgraph_max_uid);
+  varpool_node **varpool_order = NULL;
+  int i;
+  struct cgraph_node *node;
+  int total_size = 0, best_total_size = 0;
+  int partition_size;
+  ltrans_partition partition;
+  int last_visited_node = 0;
+  varpool_node *vnode;
+  int cost = 0, internal = 0;
+  int best_n_nodes = 0, best_i = 0, best_cost =
+    INT_MAX, best_internal = 0;
+  int npartitions;
+  int current_order = -1;
+
+  FOR_EACH_VARIABLE (vnode)
+    gcc_assert (!vnode->aux);
+    
+  FOR_EACH_DEFINED_FUNCTION (node)
+    if (symtab_get_symbol_partitioning_class (node) == SYMBOL_PARTITION)
+      {
+	order[n_nodes++] = node;
+	if (!node->alias)
+	  total_size += inline_summary (node)->size;
+      }
+
+  /* Streaming works best when the source units do not cross partition
+     boundaries much.  This is because importing function from a source
+     unit tends to import a lot of global trees defined there.  We should
+     get better about minimizing the function bounday, but until that
+     things works smoother if we order in source order.  */
+  qsort (order, n_nodes, sizeof (struct cgraph_node *), node_cmp);
+
+  if (cgraph_dump_file)
+    for(i = 0; i < n_nodes; i++)
+      fprintf (cgraph_dump_file, "Balanced map symbol order:%s:%u\n", order[i]->name (), order[i]->tp_first_run);
+
+  if (!flag_toplevel_reorder)
+    {
+      FOR_EACH_VARIABLE (vnode)
+	if (symtab_get_symbol_partitioning_class (vnode) == SYMBOL_PARTITION)
+	  n_varpool_nodes++;
+      varpool_order = XNEWVEC (varpool_node *, n_varpool_nodes);
+
+      n_varpool_nodes = 0;
+      FOR_EACH_VARIABLE (vnode)
+	if (symtab_get_symbol_partitioning_class (vnode) == SYMBOL_PARTITION)
+	  varpool_order[n_varpool_nodes++] = vnode;
+      qsort (varpool_order, n_varpool_nodes, sizeof (varpool_node *),
+	     varpool_node_cmp);
+    }
+
+  /* Compute partition size and create the first partition.  */
+  partition_size = total_size / PARAM_VALUE (PARAM_LTO_PARTITIONS);
+  if (partition_size < PARAM_VALUE (MIN_PARTITION_SIZE))
+    partition_size = PARAM_VALUE (MIN_PARTITION_SIZE);
+  npartitions = 1;
+  partition = new_partition ("");
+  if (cgraph_dump_file)
+    fprintf (cgraph_dump_file, "Total unit size: %i, partition size: %i\n",
+	     total_size, partition_size);
+
+  for (i = 0; i < n_nodes; i++)
+    {
+      if (symbol_partitioned_p (order[i]))
+	continue;
+
+      current_order = order[i]->order;
+
+      if (!flag_toplevel_reorder)
+	while (varpool_pos < n_varpool_nodes
+	       && varpool_order[varpool_pos]->order < current_order)
+	  {
+	    if (!symbol_partitioned_p (varpool_order[varpool_pos]))
+	      add_symbol_to_partition (partition, varpool_order[varpool_pos]);
+	    varpool_pos++;
+	  }
+
+      add_symbol_to_partition (partition, order[i]);
+      if (!order[i]->alias)
+        total_size -= inline_summary (order[i])->size;
+	  
+
+      /* Once we added a new node to the partition, we also want to add
+         all referenced variables unless they was already added into some
+         earlier partition.
+	 add_symbol_to_partition adds possibly multiple nodes and
+	 variables that are needed to satisfy needs of ORDER[i].
+         We remember last visited cgraph and varpool node from last iteration
+         of outer loop that allows us to process every new addition. 
+
+	 At the same time we compute size of the boundary into COST.  Every
+         callgraph or IPA reference edge leaving the partition contributes into
+         COST.  Every edge inside partition was earlier computed as one leaving
+	 it and thus we need to subtract it from COST.  */
+      while (last_visited_node < lto_symtab_encoder_size (partition->encoder))
+	{
+	  struct ipa_ref_list *refs;
+	  int j;
+	  struct ipa_ref *ref;
+	  symtab_node *snode = lto_symtab_encoder_deref (partition->encoder,
+							last_visited_node);
+
+	  if (cgraph_node *node = dyn_cast <cgraph_node> (snode))
+	    {
+	      struct cgraph_edge *edge;
+
+	      refs = &node->ref_list;
+
+	      last_visited_node++;
+
+	      gcc_assert (node->definition || node->weakref);
+
+	      /* Compute boundary cost of callgraph edges.  */
+	      for (edge = node->callees; edge; edge = edge->next_callee)
+		if (edge->callee->definition)
+		  {
+		    int edge_cost = edge->frequency;
+		    int index;
+
+		    if (!edge_cost)
+		      edge_cost = 1;
+		    gcc_assert (edge_cost > 0);
+		    index = lto_symtab_encoder_lookup (partition->encoder,
+						       edge->callee);
+		    if (index != LCC_NOT_FOUND
+		        && index < last_visited_node - 1)
+		      cost -= edge_cost, internal += edge_cost;
+		    else
+		      cost += edge_cost;
+		  }
+	      for (edge = node->callers; edge; edge = edge->next_caller)
+		{
+		  int edge_cost = edge->frequency;
+		  int index;
+
+		  gcc_assert (edge->caller->definition);
+		  if (!edge_cost)
+		    edge_cost = 1;
+		  gcc_assert (edge_cost > 0);
+		  index = lto_symtab_encoder_lookup (partition->encoder,
+						     edge->caller);
+		  if (index != LCC_NOT_FOUND
+		      && index < last_visited_node - 1)
+		    cost -= edge_cost;
+		  else
+		    cost += edge_cost;
+		}
+	    }
+	  else
+	    {
+	      refs = &snode->ref_list;
+	      last_visited_node++;
+	    }
+
+	  /* Compute boundary cost of IPA REF edges and at the same time look into
+	     variables referenced from current partition and try to add them.  */
+	  for (j = 0; ipa_ref_list_reference_iterate (refs, j, ref); j++)
+	    if (is_a <varpool_node> (ref->referred))
+	      {
+		int index;
+
+		vnode = ipa_ref_varpool_node (ref);
+		if (!vnode->definition)
+		  continue;
+		if (!symbol_partitioned_p (vnode) && flag_toplevel_reorder
+		    && symtab_get_symbol_partitioning_class (vnode) == SYMBOL_PARTITION)
+		  add_symbol_to_partition (partition, vnode);
+		index = lto_symtab_encoder_lookup (partition->encoder,
+						   vnode);
+		if (index != LCC_NOT_FOUND
+		    && index < last_visited_node - 1)
+		  cost--, internal++;
+		else
+		  cost++;
+	      }
+	    else
+	      {
+		int index;
+
+		node = ipa_ref_node (ref);
+		if (!node->definition)
+		  continue;
+		index = lto_symtab_encoder_lookup (partition->encoder,
+						   node);
+		if (index != LCC_NOT_FOUND
+		    && index < last_visited_node - 1)
+		  cost--, internal++;
+		else
+		  cost++;
+	      }
+	  for (j = 0; ipa_ref_list_referring_iterate (refs, j, ref); j++)
+	    if (is_a <varpool_node> (ref->referring))
+	      {
+		int index;
+
+		vnode = ipa_ref_referring_varpool_node (ref);
+		gcc_assert (vnode->definition);
+		/* It is better to couple variables with their users, because it allows them
+		   to be removed.  Coupling with objects they refer to only helps to reduce
+		   number of symbols promoted to hidden.  */
+		if (!symbol_partitioned_p (vnode) && flag_toplevel_reorder
+		    && !varpool_can_remove_if_no_refs (vnode)
+		    && symtab_get_symbol_partitioning_class (vnode) == SYMBOL_PARTITION)
+		  add_symbol_to_partition (partition, vnode);
+		index = lto_symtab_encoder_lookup (partition->encoder,
+						   vnode);
+		if (index != LCC_NOT_FOUND
+		    && index < last_visited_node - 1)
+		  cost--;
+		else
+		  cost++;
+	      }
+	    else
+	      {
+		int index;
+
+		node = ipa_ref_referring_node (ref);
+		gcc_assert (node->definition);
+		index = lto_symtab_encoder_lookup (partition->encoder,
+						   node);
+		if (index != LCC_NOT_FOUND
+		    && index < last_visited_node - 1)
+		  cost--;
+		else
+		  cost++;
+	      }
+	}
+
+      /* If the partition is large enough, start looking for smallest boundary cost.  */
+      if (partition->insns < partition_size * 3 / 4
+	  || best_cost == INT_MAX
+	  || ((!cost 
+	       || (best_internal * (HOST_WIDE_INT) cost
+		   > (internal * (HOST_WIDE_INT)best_cost)))
+  	      && partition->insns < partition_size * 5 / 4))
+	{
+	  best_cost = cost;
+	  best_internal = internal;
+	  best_i = i;
+	  best_n_nodes = lto_symtab_encoder_size (partition->encoder);
+	  best_total_size = total_size;
+	  best_varpool_pos = varpool_pos;
+	}
+      if (cgraph_dump_file)
+	fprintf (cgraph_dump_file, "Step %i: added %s/%i, size %i, cost %i/%i "
+		 "best %i/%i, step %i\n", i,
+		 order[i]->name (), order[i]->order,
+		 partition->insns, cost, internal,
+		 best_cost, best_internal, best_i);
+      /* Partition is too large, unwind into step when best cost was reached and
+	 start new partition.  */
+      if (partition->insns > 2 * partition_size)
+	{
+	  if (best_i != i)
+	    {
+	      if (cgraph_dump_file)
+		fprintf (cgraph_dump_file, "Unwinding %i insertions to step %i\n",
+			 i - best_i, best_i);
+	      undo_partition (partition, best_n_nodes);
+	      varpool_pos = best_varpool_pos;
+	    }
+	  i = best_i;
+ 	  /* When we are finished, avoid creating empty partition.  */
+	  while (i < n_nodes - 1 && symbol_partitioned_p (order[i + 1]))
+	    i++;
+	  if (i == n_nodes - 1)
+	    break;
+	  partition = new_partition ("");
+	  last_visited_node = 0;
+	  total_size = best_total_size;
+	  cost = 0;
+
+	  if (cgraph_dump_file)
+	    fprintf (cgraph_dump_file, "New partition\n");
+	  best_n_nodes = 0;
+	  best_cost = INT_MAX;
+
+	  /* Since the size of partitions is just approximate, update the size after
+	     we finished current one.  */
+	  if (npartitions < PARAM_VALUE (PARAM_LTO_PARTITIONS))
+	    partition_size = total_size
+	      / (PARAM_VALUE (PARAM_LTO_PARTITIONS) - npartitions);
+	  else
+	    partition_size = INT_MAX;
+
+	  if (partition_size < PARAM_VALUE (MIN_PARTITION_SIZE))
+	    partition_size = PARAM_VALUE (MIN_PARTITION_SIZE);
+	  npartitions ++;
+	}
+    }
+
+  /* Varables that are not reachable from the code go into last partition.  */
+  if (flag_toplevel_reorder)
+    {
+      FOR_EACH_VARIABLE (vnode)
+        if (symtab_get_symbol_partitioning_class (vnode) == SYMBOL_PARTITION
+	    && !symbol_partitioned_p (vnode))
+	  add_symbol_to_partition (partition, vnode);
+    }
+  else
+    {
+      while (varpool_pos < n_varpool_nodes)
+	{
+	  if (!symbol_partitioned_p (varpool_order[varpool_pos]))
+	    add_symbol_to_partition (partition, varpool_order[varpool_pos]);
+	  varpool_pos++;
+	}
+      free (varpool_order);
+    }
+  free (order);
+}
+
+/* Mangle NODE symbol name into a local name.  
+   This is necessary to do
+   1) if two or more static vars of same assembler name
+      are merged into single ltrans unit.
+   2) if prevoiusly static var was promoted hidden to avoid possible conflict
+      with symbols defined out of the LTO world.
+*/
+
+static bool
+privatize_symbol_name (symtab_node *node)
+{
+  tree decl = node->decl;
+  const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
+
+  /* Our renaming machinery do not handle more than one change of assembler name.
+     We should not need more than one anyway.  */
+  if (node->lto_file_data
+      && lto_get_decl_name_mapping (node->lto_file_data, name) != name)
+    {
+      if (cgraph_dump_file)
+	fprintf (cgraph_dump_file,
+		"Not privatizing symbol name: %s. It privatized already.\n",
+		name);
+      return false;
+    }
+  /* Avoid mangling of already mangled clones. 
+     ???  should have a flag whether a symbol has a 'private' name already,
+     since we produce some symbols like that i.e. for global constructors
+     that are not really clones.  */
+  if (node->unique_name)
+    {
+      if (cgraph_dump_file)
+	fprintf (cgraph_dump_file,
+		"Not privatizing symbol name: %s. Has unique name.\n",
+		name);
+      return false;
+    }
+  change_decl_assembler_name (decl, clone_function_name (decl, "lto_priv"));
+  if (node->lto_file_data)
+    lto_record_renamed_decl (node->lto_file_data, name,
+			     IDENTIFIER_POINTER
+			     (DECL_ASSEMBLER_NAME (decl)));
+  if (cgraph_dump_file)
+    fprintf (cgraph_dump_file,
+	    "Privatizing symbol name: %s -> %s\n",
+	    name, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
+  return true;
+}
+
+/* Promote variable VNODE to be static.  */
+
+static void
+promote_symbol (symtab_node *node)
+{
+  /* We already promoted ... */
+  if (DECL_VISIBILITY (node->decl) == VISIBILITY_HIDDEN
+      && DECL_VISIBILITY_SPECIFIED (node->decl)
+      && TREE_PUBLIC (node->decl))
+    return;
+
+  gcc_checking_assert (!TREE_PUBLIC (node->decl)
+		       && !DECL_EXTERNAL (node->decl));
+  /* Be sure that newly public symbol does not conflict with anything already
+     defined by the non-LTO part.  */
+  privatize_symbol_name (node);
+  TREE_PUBLIC (node->decl) = 1;
+  DECL_VISIBILITY (node->decl) = VISIBILITY_HIDDEN;
+  DECL_VISIBILITY_SPECIFIED (node->decl) = true;
+  if (cgraph_dump_file)
+    fprintf (cgraph_dump_file,
+	    "Promoting as hidden: %s\n", node->name ());
+}
+
+/* Return true if NODE needs named section even if it won't land in the partition
+   symbol table.
+   FIXME: we should really not use named sections for inline clones and master clones.  */
+
+static bool
+may_need_named_section_p (lto_symtab_encoder_t encoder, symtab_node *node)
+{
+  struct cgraph_node *cnode = dyn_cast <cgraph_node> (node);
+  if (!cnode)
+    return false;
+  if (symtab_real_symbol_p (node))
+    return false;
+  return (!encoder
+	  || (lto_symtab_encoder_lookup (encoder, node) != LCC_NOT_FOUND
+              && lto_symtab_encoder_encode_body_p (encoder,
+				                   cnode)));
+}
+
+/* If NODE represents a static variable.  See if there are other variables
+   of the same name in partition ENCODER (or in whole compilation unit if
+   ENCODER is NULL) and if so, mangle the statics.  Always mangle all
+   conflicting statics, so we reduce changes of silently miscompiling
+   asm statements referring to them by symbol name.  */
+
+static void
+rename_statics (lto_symtab_encoder_t encoder, symtab_node *node)
+{
+  tree decl = node->decl;
+  symtab_node *s;
+  tree name = DECL_ASSEMBLER_NAME (decl);
+
+  /* See if this is static symbol. */
+  if ((node->externally_visible
+      /* FIXME: externally_visible is somewhat illogically not set for
+	 external symbols (i.e. those not defined).  Remove this test
+	 once this is fixed.  */
+        || DECL_EXTERNAL (node->decl)
+        || !symtab_real_symbol_p (node))
+       && !may_need_named_section_p (encoder, node))
+    return;
+
+  /* Now walk symbols sharing the same name and see if there are any conflicts.
+     (all types of symbols counts here, since we can not have static of the
+     same name as external or public symbol.)  */
+  for (s = symtab_node_for_asm (name);
+       s; s = s->next_sharing_asm_name)
+    if ((symtab_real_symbol_p (s) || may_need_named_section_p (encoder, s))
+	&& s->decl != node->decl
+	&& (!encoder
+	    || lto_symtab_encoder_lookup (encoder, s) != LCC_NOT_FOUND))
+       break;
+
+  /* OK, no confict, so we have nothing to do.  */
+  if (!s)
+    return;
+
+  if (cgraph_dump_file)
+    fprintf (cgraph_dump_file,
+	    "Renaming statics with asm name: %s\n", node->name ());
+
+  /* Assign every symbol in the set that shares the same ASM name an unique
+     mangled name.  */
+  for (s = symtab_node_for_asm (name); s;)
+    if (!s->externally_visible
+	&& ((symtab_real_symbol_p (s)
+             && !DECL_EXTERNAL (node->decl)
+	     && !TREE_PUBLIC (node->decl))
+ 	    || may_need_named_section_p (encoder, s))
+	&& (!encoder
+	    || lto_symtab_encoder_lookup (encoder, s) != LCC_NOT_FOUND))
+      {
+        if (privatize_symbol_name (s))
+	  /* Re-start from beginning since we do not know how many symbols changed a name.  */
+	  s = symtab_node_for_asm (name);
+        else s = s->next_sharing_asm_name;
+      }
+    else s = s->next_sharing_asm_name;
+}
+
+/* Find out all static decls that need to be promoted to global because
+   of cross file sharing.  This function must be run in the WPA mode after
+   all inlinees are added.  */
+
+void
+lto_promote_cross_file_statics (void)
+{
+  unsigned i, n_sets;
+
+  gcc_assert (flag_wpa);
+
+  /* First compute boundaries.  */
+  n_sets = ltrans_partitions.length ();
+  for (i = 0; i < n_sets; i++)
+    {
+      ltrans_partition part
+	= ltrans_partitions[i];
+      part->encoder = compute_ltrans_boundary (part->encoder);
+    }
+
+  /* Look at boundaries and promote symbols as needed.  */
+  for (i = 0; i < n_sets; i++)
+    {
+      lto_symtab_encoder_iterator lsei;
+      lto_symtab_encoder_t encoder = ltrans_partitions[i]->encoder;
+
+      for (lsei = lsei_start (encoder); !lsei_end_p (lsei);
+	   lsei_next (&lsei))
+        {
+          symtab_node *node = lsei_node (lsei);
+
+	  /* If symbol is static, rename it if its assembler name clash with
+	     anything else in this unit.  */
+	  rename_statics (encoder, node);
+
+	  /* No need to promote if symbol already is externally visible ... */
+	  if (node->externally_visible
+ 	      /* ... or if it is part of current partition ... */
+	      || lto_symtab_encoder_in_partition_p (encoder, node)
+	      /* ... or if we do not partition it. This mean that it will
+		 appear in every partition refernecing it.  */
+	      || symtab_get_symbol_partitioning_class (node) != SYMBOL_PARTITION)
+	    continue;
+
+          promote_symbol (node);
+        }
+    }
+}
+
+/* Rename statics in the whole unit in the case that 
+   we do -flto-partition=none.  */
+
+void
+lto_promote_statics_nonwpa (void)
+{
+  symtab_node *node;
+  FOR_EACH_SYMBOL (node)
+    rename_statics (NULL, node);
+}
diff --git a/gcc-4.9/gcc/lto/lto-partition.h b/gcc-4.9/gcc/lto/lto-partition.h
new file mode 100644
index 000000000..770111d9b
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto-partition.h
@@ -0,0 +1,40 @@
+/* LTO partitioning logic routines.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+
+/* Structure describing ltrans partitions.  */
+
+struct ltrans_partition_def
+{
+  lto_symtab_encoder_t encoder;
+  const char * name;
+  int insns;
+  pointer_set_t *initializers_visited;
+};
+
+typedef struct ltrans_partition_def *ltrans_partition;
+
+extern vec<ltrans_partition> ltrans_partitions;
+
+void lto_1_to_1_map (void);
+void lto_max_map (void);
+void lto_balanced_map (void);
+void lto_promote_cross_file_statics (void);
+void free_ltrans_partitions (void);
+void lto_promote_statics_nonwpa (void);
diff --git a/gcc-4.9/gcc/lto/lto-symtab.c b/gcc-4.9/gcc/lto/lto-symtab.c
new file mode 100644
index 000000000..71242c892
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto-symtab.c
@@ -0,0 +1,683 @@
+/* LTO symbol table.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "diagnostic-core.h"
+#include "tree.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "hashtab.h"
+#include "plugin-api.h"
+#include "lto-streamer.h"
+#include "ipa-utils.h"
+#include "ipa-inline.h"
+
+/* Replace the cgraph node NODE with PREVAILING_NODE in the cgraph, merging
+   all edges and removing the old node.  */
+
+static void
+lto_cgraph_replace_node (struct cgraph_node *node,
+			 struct cgraph_node *prevailing_node)
+{
+  struct cgraph_edge *e, *next;
+  bool compatible_p;
+
+  if (cgraph_dump_file)
+    {
+      fprintf (cgraph_dump_file, "Replacing cgraph node %s/%i by %s/%i"
+ 	       " for symbol %s\n",
+	       node->name (), node->order,
+	       prevailing_node->name (),
+	       prevailing_node->order,
+	       IDENTIFIER_POINTER ((*targetm.asm_out.mangle_assembler_name)
+		 (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (node->decl)))));
+    }
+
+  /* Merge node flags.  */
+  if (node->force_output)
+    cgraph_mark_force_output_node (prevailing_node);
+  if (node->forced_by_abi)
+    prevailing_node->forced_by_abi = true;
+  if (node->address_taken)
+    {
+      gcc_assert (!prevailing_node->global.inlined_to);
+      cgraph_mark_address_taken_node (prevailing_node);
+    }
+
+  /* Redirect all incoming edges.  */
+  compatible_p
+    = types_compatible_p (TREE_TYPE (TREE_TYPE (prevailing_node->decl)),
+			  TREE_TYPE (TREE_TYPE (node->decl)));
+  for (e = node->callers; e; e = next)
+    {
+      next = e->next_caller;
+      cgraph_redirect_edge_callee (e, prevailing_node);
+      /* If there is a mismatch between the supposed callee return type and
+	 the real one do not attempt to inline this function.
+	 ???  We really need a way to match function signatures for ABI
+	 compatibility and perform related promotions at inlining time.  */
+      if (!compatible_p)
+	e->call_stmt_cannot_inline_p = 1;
+    }
+  /* Redirect incomming references.  */
+  ipa_clone_referring (prevailing_node, &node->ref_list);
+
+  ipa_merge_profiles (prevailing_node, node);
+  lto_free_function_in_decl_state_for_node (node);
+
+  if (node->decl != prevailing_node->decl)
+    cgraph_release_function_body (node);
+
+  /* Time profile merging */
+  if (node->tp_first_run)
+    prevailing_node->tp_first_run = prevailing_node->tp_first_run ?
+      MIN (prevailing_node->tp_first_run, node->tp_first_run) :
+      node->tp_first_run;
+
+  /* Finally remove the replaced node.  */
+  cgraph_remove_node (node);
+}
+
+/* Replace the cgraph node NODE with PREVAILING_NODE in the cgraph, merging
+   all edges and removing the old node.  */
+
+static void
+lto_varpool_replace_node (varpool_node *vnode,
+			  varpool_node *prevailing_node)
+{
+  gcc_assert (!vnode->definition || prevailing_node->definition);
+  gcc_assert (!vnode->analyzed || prevailing_node->analyzed);
+
+  ipa_clone_referring (prevailing_node, &vnode->ref_list);
+  if (vnode->force_output)
+    prevailing_node->force_output = true;
+  if (vnode->forced_by_abi)
+    prevailing_node->forced_by_abi = true;
+
+  /* Be sure we can garbage collect the initializer.  */
+  if (DECL_INITIAL (vnode->decl)
+      && vnode->decl != prevailing_node->decl)
+    DECL_INITIAL (vnode->decl) = error_mark_node;
+  /* Finally remove the replaced node.  */
+  varpool_remove_node (vnode);
+}
+
+/* Merge two variable or function symbol table entries PREVAILING and ENTRY.
+   Return false if the symbols are not fully compatible and a diagnostic
+   should be emitted.  */
+
+static bool
+lto_symtab_merge (symtab_node *prevailing, symtab_node *entry)
+{
+  tree prevailing_decl = prevailing->decl;
+  tree decl = entry->decl;
+  tree prevailing_type, type;
+
+  if (prevailing_decl == decl)
+    return true;
+
+  /* Merge decl state in both directions, we may still end up using
+     the new decl.  */
+  TREE_ADDRESSABLE (prevailing_decl) |= TREE_ADDRESSABLE (decl);
+  TREE_ADDRESSABLE (decl) |= TREE_ADDRESSABLE (prevailing_decl);
+
+  /* The linker may ask us to combine two incompatible symbols.
+     Detect this case and notify the caller of required diagnostics.  */
+
+  if (TREE_CODE (decl) == FUNCTION_DECL)
+    {
+      if (!types_compatible_p (TREE_TYPE (prevailing_decl),
+			       TREE_TYPE (decl)))
+	/* If we don't have a merged type yet...sigh.  The linker
+	   wouldn't complain if the types were mismatched, so we
+	   probably shouldn't either.  Just use the type from
+	   whichever decl appears to be associated with the
+	   definition.  If for some odd reason neither decl is, the
+	   older one wins.  */
+	(void) 0;
+
+      return true;
+    }
+
+  /* Now we exclusively deal with VAR_DECLs.  */
+
+  /* Sharing a global symbol is a strong hint that two types are
+     compatible.  We could use this information to complete
+     incomplete pointed-to types more aggressively here, ignoring
+     mismatches in both field and tag names.  It's difficult though
+     to guarantee that this does not have side-effects on merging
+     more compatible types from other translation units though.  */
+
+  /* We can tolerate differences in type qualification, the
+     qualification of the prevailing definition will prevail.
+     ???  In principle we might want to only warn for structurally
+     incompatible types here, but unless we have protective measures
+     for TBAA in place that would hide useful information.  */
+  prevailing_type = TYPE_MAIN_VARIANT (TREE_TYPE (prevailing_decl));
+  type = TYPE_MAIN_VARIANT (TREE_TYPE (decl));
+
+  if (!types_compatible_p (prevailing_type, type))
+    {
+      if (COMPLETE_TYPE_P (type))
+	return false;
+
+      /* If type is incomplete then avoid warnings in the cases
+	 that TBAA handles just fine.  */
+
+      if (TREE_CODE (prevailing_type) != TREE_CODE (type))
+	return false;
+
+      if (TREE_CODE (prevailing_type) == ARRAY_TYPE)
+	{
+	  tree tem1 = TREE_TYPE (prevailing_type);
+	  tree tem2 = TREE_TYPE (type);
+	  while (TREE_CODE (tem1) == ARRAY_TYPE
+		 && TREE_CODE (tem2) == ARRAY_TYPE)
+	    {
+	      tem1 = TREE_TYPE (tem1);
+	      tem2 = TREE_TYPE (tem2);
+	    }
+
+	  if (TREE_CODE (tem1) != TREE_CODE (tem2))
+	    return false;
+
+	  if (!types_compatible_p (tem1, tem2))
+	    return false;
+	}
+
+      /* Fallthru.  Compatible enough.  */
+    }
+
+  /* ???  We might want to emit a warning here if type qualification
+     differences were spotted.  Do not do this unconditionally though.  */
+
+  /* There is no point in comparing too many details of the decls here.
+     The type compatibility checks or the completing of types has properly
+     dealt with most issues.  */
+
+  /* The following should all not invoke fatal errors as in non-LTO
+     mode the linker wouldn't complain either.  Just emit warnings.  */
+
+  /* Report a warning if user-specified alignments do not match.  */
+  if ((DECL_USER_ALIGN (prevailing_decl) && DECL_USER_ALIGN (decl))
+      && DECL_ALIGN (prevailing_decl) < DECL_ALIGN (decl))
+    return false;
+
+  return true;
+}
+
+/* Return true if the symtab entry E can be replaced by another symtab
+   entry.  */
+
+static bool
+lto_symtab_resolve_replaceable_p (symtab_node *e)
+{
+  if (DECL_EXTERNAL (e->decl)
+      || DECL_COMDAT (e->decl)
+      || DECL_ONE_ONLY (e->decl)
+      || DECL_WEAK (e->decl))
+    return true;
+
+  if (TREE_CODE (e->decl) == VAR_DECL)
+    return (DECL_COMMON (e->decl)
+	    || (!flag_no_common && !DECL_INITIAL (e->decl)));
+
+  return false;
+}
+
+/* Return true, if the symbol E should be resolved by lto-symtab.
+   Those are all external symbols and all real symbols that are not static (we
+   handle renaming of static later in partitioning).  */
+
+static bool
+lto_symtab_symbol_p (symtab_node *e)
+{
+  if (!TREE_PUBLIC (e->decl) && !DECL_EXTERNAL (e->decl))
+    return false;
+  return symtab_real_symbol_p (e);
+}
+
+/* Return true if the symtab entry E can be the prevailing one.  */
+
+static bool
+lto_symtab_resolve_can_prevail_p (symtab_node *e)
+{
+  if (!lto_symtab_symbol_p (e))
+    return false;
+
+  /* The C++ frontend ends up neither setting TREE_STATIC nor
+     DECL_EXTERNAL on virtual methods but only TREE_PUBLIC.
+     So do not reject !TREE_STATIC here but only DECL_EXTERNAL.  */
+  if (DECL_EXTERNAL (e->decl))
+    return false;
+
+  return e->definition;
+}
+
+/* Resolve the symbol with the candidates in the chain *SLOT and store
+   their resolutions.  */
+
+static symtab_node *
+lto_symtab_resolve_symbols (symtab_node *first)
+{
+  symtab_node *e;
+  symtab_node *prevailing = NULL;
+
+  /* Always set e->node so that edges are updated to reflect decl merging. */
+  for (e = first; e; e = e->next_sharing_asm_name)
+    if (lto_symtab_symbol_p (e)
+	&& (e->resolution == LDPR_PREVAILING_DEF_IRONLY
+	    || e->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP
+	    || e->resolution == LDPR_PREVAILING_DEF))
+      {
+	prevailing = e;
+	break;
+      }
+
+  /* If the chain is already resolved there is nothing else to do.  */
+  if (prevailing)
+    {
+      /* Assert it's the only one.  */
+      for (e = prevailing->next_sharing_asm_name; e; e = e->next_sharing_asm_name)
+	if (lto_symtab_symbol_p (e)
+	    && (e->resolution == LDPR_PREVAILING_DEF_IRONLY
+		|| e->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP
+		|| e->resolution == LDPR_PREVAILING_DEF))
+	  fatal_error ("multiple prevailing defs for %qE",
+		       DECL_NAME (prevailing->decl));
+      return prevailing;
+    }
+
+  /* Find the single non-replaceable prevailing symbol and
+     diagnose ODR violations.  */
+  for (e = first; e; e = e->next_sharing_asm_name)
+    {
+      if (!lto_symtab_resolve_can_prevail_p (e))
+	continue;
+
+      /* If we have a non-replaceable definition it prevails.  */
+      if (!lto_symtab_resolve_replaceable_p (e))
+	{
+	  if (prevailing)
+	    {
+	      error_at (DECL_SOURCE_LOCATION (e->decl),
+			"%qD has already been defined", e->decl);
+	      inform (DECL_SOURCE_LOCATION (prevailing->decl),
+		      "previously defined here");
+	    }
+	  prevailing = e;
+	}
+    }
+  if (prevailing)
+    return prevailing;
+
+  /* Do a second round choosing one from the replaceable prevailing decls.  */
+  for (e = first; e; e = e->next_sharing_asm_name)
+    {
+      if (!lto_symtab_resolve_can_prevail_p (e))
+	continue;
+
+      /* Choose the first function that can prevail as prevailing.  */
+      if (TREE_CODE (e->decl) == FUNCTION_DECL)
+	{
+	  prevailing = e;
+	  break;
+	}
+
+      /* From variables that can prevail choose the largest one.  */
+      if (!prevailing
+	  || tree_int_cst_lt (DECL_SIZE (prevailing->decl),
+			      DECL_SIZE (e->decl))
+	  /* When variables are equivalent try to chose one that has useful
+	     DECL_INITIAL.  This makes sense for keyed vtables that are
+	     DECL_EXTERNAL but initialized.  In units that do not need them
+	     we replace the initializer by error_mark_node to conserve
+	     memory.
+
+	     We know that the vtable is keyed outside the LTO unit - otherwise
+	     the keyed instance would prevail.  We still can preserve useful
+	     info in the initializer.  */
+	  || (DECL_SIZE (prevailing->decl) == DECL_SIZE (e->decl)
+	      && (DECL_INITIAL (e->decl)
+		  && DECL_INITIAL (e->decl) != error_mark_node)
+	      && (!DECL_INITIAL (prevailing->decl)
+		  || DECL_INITIAL (prevailing->decl) == error_mark_node)))
+	prevailing = e;
+    }
+
+  return prevailing;
+}
+
+/* Merge all decls in the symbol table chain to the prevailing decl and
+   issue diagnostics about type mismatches.  If DIAGNOSED_P is true
+   do not issue further diagnostics.*/
+
+static void
+lto_symtab_merge_decls_2 (symtab_node *first, bool diagnosed_p)
+{
+  symtab_node *prevailing;
+  symtab_node *e;
+  vec<tree> mismatches = vNULL;
+  unsigned i;
+  tree decl;
+
+  /* Nothing to do for a single entry.  */
+  prevailing = first;
+  if (!prevailing->next_sharing_asm_name)
+    return;
+
+  /* Try to merge each entry with the prevailing one.  */
+  for (e = prevailing->next_sharing_asm_name;
+       e; e = e->next_sharing_asm_name)
+    if (TREE_PUBLIC (e->decl))
+      {
+	if (!lto_symtab_merge (prevailing, e)
+	    && !diagnosed_p)
+	  mismatches.safe_push (e->decl);
+      }
+  if (mismatches.is_empty ())
+    return;
+
+  /* Diagnose all mismatched re-declarations.  */
+  FOR_EACH_VEC_ELT (mismatches, i, decl)
+    {
+      if (!types_compatible_p (TREE_TYPE (prevailing->decl),
+			       TREE_TYPE (decl)))
+	diagnosed_p |= warning_at (DECL_SOURCE_LOCATION (decl), 0,
+				   "type of %qD does not match original "
+				   "declaration", decl);
+
+      else if ((DECL_USER_ALIGN (prevailing->decl)
+	        && DECL_USER_ALIGN (decl))
+	       && DECL_ALIGN (prevailing->decl) < DECL_ALIGN (decl))
+	{
+	  diagnosed_p |= warning_at (DECL_SOURCE_LOCATION (decl), 0,
+				     "alignment of %qD is bigger than "
+				     "original declaration", decl);
+	}
+    }
+  if (diagnosed_p)
+    inform (DECL_SOURCE_LOCATION (prevailing->decl),
+	    "previously declared here");
+
+  mismatches.release ();
+}
+
+/* Helper to process the decl chain for the symbol table entry *SLOT.  */
+
+static void
+lto_symtab_merge_decls_1 (symtab_node *first)
+{
+  symtab_node *e;
+  symtab_node *prevailing;
+  bool diagnosed_p = false;
+
+  if (cgraph_dump_file)
+    {
+      fprintf (cgraph_dump_file, "Merging nodes for %s. Candidates:\n",
+	       first->asm_name ());
+      for (e = first; e; e = e->next_sharing_asm_name)
+	if (TREE_PUBLIC (e->decl))
+	  dump_symtab_node (cgraph_dump_file, e);
+    }
+
+  /* Compute the symbol resolutions.  This is a no-op when using the
+     linker plugin and resolution was decided by the linker.  */
+  prevailing = lto_symtab_resolve_symbols (first);
+
+  /* If there's not a prevailing symbol yet it's an external reference.
+     Happens a lot during ltrans.  Choose the first symbol with a
+     cgraph or a varpool node.  */
+  if (!prevailing)
+    {
+      prevailing = first;
+      /* For variables chose with a priority variant with vnode
+	 attached (i.e. from unit where external declaration of
+	 variable is actually used).
+	 When there are multiple variants, chose one with size.
+	 This is needed for C++ typeinfos, for example in
+	 lto/20081204-1 there are typeifos in both units, just
+	 one of them do have size.  */
+      if (TREE_CODE (prevailing->decl) == VAR_DECL)
+	{
+	  for (e = prevailing->next_sharing_asm_name;
+	       e; e = e->next_sharing_asm_name)
+	    if (!COMPLETE_TYPE_P (TREE_TYPE (prevailing->decl))
+		&& COMPLETE_TYPE_P (TREE_TYPE (e->decl))
+		&& lto_symtab_symbol_p (e))
+	      prevailing = e;
+	}
+      /* For variables prefer the non-builtin if one is available.  */
+      else if (TREE_CODE (prevailing->decl) == FUNCTION_DECL)
+	{
+	  for (e = first; e; e = e->next_sharing_asm_name)
+	    if (TREE_CODE (e->decl) == FUNCTION_DECL
+		&& !DECL_BUILT_IN (e->decl)
+		&& lto_symtab_symbol_p (e))
+	      {
+		prevailing = e;
+		break;
+	      }
+	}
+    }
+
+  symtab_prevail_in_asm_name_hash (prevailing);
+
+  /* Diagnose mismatched objects.  */
+  for (e = prevailing->next_sharing_asm_name;
+       e; e = e->next_sharing_asm_name)
+    {
+      if (TREE_CODE (prevailing->decl)
+	  == TREE_CODE (e->decl))
+	continue;
+      if (!lto_symtab_symbol_p (e))
+	continue;
+
+      switch (TREE_CODE (prevailing->decl))
+	{
+	case VAR_DECL:
+	  gcc_assert (TREE_CODE (e->decl) == FUNCTION_DECL);
+	  error_at (DECL_SOURCE_LOCATION (e->decl),
+		    "variable %qD redeclared as function",
+		    prevailing->decl);
+	  break;
+
+	case FUNCTION_DECL:
+	  gcc_assert (TREE_CODE (e->decl) == VAR_DECL);
+	  error_at (DECL_SOURCE_LOCATION (e->decl),
+		    "function %qD redeclared as variable",
+		    prevailing->decl);
+	  break;
+
+	default:
+	  gcc_unreachable ();
+	}
+
+      diagnosed_p = true;
+    }
+  if (diagnosed_p)
+      inform (DECL_SOURCE_LOCATION (prevailing->decl),
+	      "previously declared here");
+
+  /* Merge the chain to the single prevailing decl and diagnose
+     mismatches.  */
+  lto_symtab_merge_decls_2 (prevailing, diagnosed_p);
+
+  if (cgraph_dump_file)
+    {
+      fprintf (cgraph_dump_file, "After resolution:\n");
+      for (e = prevailing; e; e = e->next_sharing_asm_name)
+	dump_symtab_node (cgraph_dump_file, e);
+    }
+}
+
+/* Resolve and merge all symbol table chains to a prevailing decl.  */
+
+void
+lto_symtab_merge_decls (void)
+{
+  symtab_node *node;
+
+  /* Populate assembler name hash.   */
+  symtab_initialize_asm_name_hash ();
+
+  FOR_EACH_SYMBOL (node)
+    if (!node->previous_sharing_asm_name
+	&& node->next_sharing_asm_name)
+      lto_symtab_merge_decls_1 (node);
+}
+
+/* Helper to process the decl chain for the symbol table entry *SLOT.  */
+
+static void
+lto_symtab_merge_symbols_1 (symtab_node *prevailing)
+{
+  symtab_node *e;
+  symtab_node *next;
+
+  /* Replace the cgraph node of each entry with the prevailing one.  */
+  for (e = prevailing->next_sharing_asm_name; e;
+       e = next)
+    {
+      next = e->next_sharing_asm_name;
+
+      if (!lto_symtab_symbol_p (e))
+	continue;
+      cgraph_node *ce = dyn_cast <cgraph_node> (e);
+      if (ce && !DECL_BUILT_IN (e->decl))
+	lto_cgraph_replace_node (ce, cgraph (prevailing));
+      if (varpool_node *ve = dyn_cast <varpool_node> (e))
+	lto_varpool_replace_node (ve, varpool (prevailing));
+    }
+
+  return;
+}
+
+/* Merge cgraph nodes according to the symbol merging done by
+   lto_symtab_merge_decls.  */
+
+void
+lto_symtab_merge_symbols (void)
+{
+  symtab_node *node;
+
+  if (!flag_ltrans)
+    {
+      symtab_initialize_asm_name_hash ();
+
+      /* Do the actual merging.  
+         At this point we invalidate hash translating decls into symtab nodes
+	 because after removing one of duplicate decls the hash is not correcly
+	 updated to the ohter dupliate.  */
+      FOR_EACH_SYMBOL (node)
+	if (lto_symtab_symbol_p (node)
+	    && node->next_sharing_asm_name
+	    && !node->previous_sharing_asm_name)
+	  lto_symtab_merge_symbols_1 (node);
+
+      /* Resolve weakref aliases whose target are now in the compilation unit.  
+	 also re-populate the hash translating decls into symtab nodes*/
+      FOR_EACH_SYMBOL (node)
+	{
+	  cgraph_node *cnode, *cnode2;
+	  varpool_node *vnode;
+	  symtab_node *node2;
+
+	  if (!node->analyzed && node->alias_target)
+	    {
+	      symtab_node *tgt = symtab_node_for_asm (node->alias_target);
+	      gcc_assert (node->weakref);
+	      if (tgt)
+		symtab_resolve_alias (node, tgt);
+	    }
+	  node->aux = NULL;
+
+	  if (!(cnode = dyn_cast <cgraph_node> (node))
+	      || !cnode->clone_of
+	      || cnode->clone_of->decl != cnode->decl)
+	    {
+	      /* Builtins are not merged via decl merging.  It is however
+		 possible that tree merging unified the declaration.  We
+		 do not want duplicate entries in symbol table.  */
+	      if (cnode && DECL_BUILT_IN (node->decl)
+		  && (cnode2 = cgraph_get_node (node->decl))
+		  && cnode2 != cnode)
+		lto_cgraph_replace_node (cnode2, cnode);
+
+	      /* The user defined assembler variables are also not unified by their
+		 symbol name (since it is irrelevant), but we need to unify symbol
+		 nodes if tree merging occured.  */
+	      if ((vnode = dyn_cast <varpool_node> (node))
+		  && DECL_HARD_REGISTER (vnode->decl)
+		  && (node2 = symtab_get_node (vnode->decl))
+		  && node2 != node)
+		lto_varpool_replace_node (dyn_cast <varpool_node> (node2),
+					  vnode);
+	  
+
+	      /* Abstract functions may have duplicated cgraph nodes attached;
+		 remove them.  */
+	      else if (cnode && DECL_ABSTRACT (cnode->decl)
+		       && (cnode2 = cgraph_get_node (node->decl))
+		       && cnode2 != cnode)
+		cgraph_remove_node (cnode2);
+
+	      symtab_insert_node_to_hashtable (node);
+	    }
+	}
+    }
+}
+
+/* Given the decl DECL, return the prevailing decl with the same name. */
+
+tree
+lto_symtab_prevailing_decl (tree decl)
+{
+  symtab_node *ret;
+
+  /* Builtins and local symbols are their own prevailing decl.  */
+  if ((!TREE_PUBLIC (decl) && !DECL_EXTERNAL (decl)) || is_builtin_fn (decl))
+    return decl;
+
+  /* DECL_ABSTRACTs are their own prevailng decl.  */
+  if (TREE_CODE (decl) == FUNCTION_DECL && DECL_ABSTRACT (decl))
+    return decl;
+
+  /* Likewise builtins are their own prevailing decl.  This preserves
+     non-builtin vs. builtin uses from compile-time.  */
+  if (TREE_CODE (decl) == FUNCTION_DECL && DECL_BUILT_IN (decl))
+    return decl;
+
+  /* Ensure DECL_ASSEMBLER_NAME will not set assembler name.  */
+  gcc_assert (DECL_ASSEMBLER_NAME_SET_P (decl));
+
+  /* Walk through the list of candidates and return the one we merged to.  */
+  ret = symtab_node_for_asm (DECL_ASSEMBLER_NAME (decl));
+  if (!ret)
+    return decl;
+
+  return ret->decl;
+}
diff --git a/gcc-4.9/gcc/lto/lto-tree.h b/gcc-4.9/gcc/lto/lto-tree.h
new file mode 100644
index 000000000..b1c3d2a84
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto-tree.h
@@ -0,0 +1,58 @@
+/* Language-dependent trees for LTO.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_LTO_TREE_H
+#define GCC_LTO_TREE_H
+
+#include "plugin-api.h"
+
+struct GTY(()) lang_identifier
+{
+  struct tree_identifier base;
+};
+
+struct GTY((variable_size)) lang_decl
+{
+  int dummy;  /* Added because ggc does not like empty structs.  */
+};
+
+struct GTY((variable_size)) lang_type
+{
+  int dummy;  /* Added because ggc does not like empty structs.  */
+};
+
+struct GTY(()) language_function
+{
+  int dummy;  /* Added because ggc does not like empty structs.  */
+};
+
+enum lto_tree_node_structure_enum {
+  TS_LTO_GENERIC
+};
+
+union GTY((desc ("lto_tree_node_structure (&%h)"),
+	  chain_next ("CODE_CONTAINS_STRUCT (TREE_CODE (&%h.generic), TS_TYPE_COMMON) ? ((union lang_tree_node *) %h.generic.type_common.next_variant) : CODE_CONTAINS_STRUCT (TREE_CODE (&%h.generic), TS_COMMON) ? ((union lang_tree_node *) %h.generic.common.chain) : NULL")))
+    lang_tree_node
+{
+  union tree_node GTY ((tag ("TS_LTO_GENERIC"),
+			desc ("tree_node_structure (&%h)"))) generic;
+};
+
+#endif /* GCC_LTO_TREE_H */
diff --git a/gcc-4.9/gcc/lto/lto.c b/gcc-4.9/gcc/lto/lto.c
new file mode 100644
index 000000000..df9f03151
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto.c
@@ -0,0 +1,3452 @@
+/* Top-level LTO routines.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "opts.h"
+#include "toplev.h"
+#include "tree.h"
+#include "stor-layout.h"
+#include "diagnostic-core.h"
+#include "tm.h"
+#include "cgraph.h"
+#include "tree-ssa-operands.h"
+#include "tree-pass.h"
+#include "langhooks.h"
+#include "bitmap.h"
+#include "ipa-prop.h"
+#include "common.h"
+#include "debug.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "lto.h"
+#include "lto-tree.h"
+#include "lto-streamer.h"
+#include "tree-streamer.h"
+#include "splay-tree.h"
+#include "lto-partition.h"
+#include "data-streamer.h"
+#include "context.h"
+#include "pass_manager.h"
+
+
+/* Number of parallel tasks to run, -1 if we want to use GNU Make jobserver.  */
+static int lto_parallelism;
+
+static GTY(()) tree first_personality_decl;
+
+/* Returns a hash code for P.  */
+
+static hashval_t
+hash_name (const void *p)
+{
+  const struct lto_section_slot *ds = (const struct lto_section_slot *) p;
+  return (hashval_t) htab_hash_string (ds->name);
+}
+
+
+/* Returns nonzero if P1 and P2 are equal.  */
+
+static int
+eq_name (const void *p1, const void *p2)
+{
+  const struct lto_section_slot *s1 =
+    (const struct lto_section_slot *) p1;
+  const struct lto_section_slot *s2 =
+    (const struct lto_section_slot *) p2;
+
+  return strcmp (s1->name, s2->name) == 0;
+}
+
+/* Free lto_section_slot */
+
+static void
+free_with_string (void *arg)
+{
+  struct lto_section_slot *s = (struct lto_section_slot *)arg;
+
+  free (CONST_CAST (char *, s->name));
+  free (arg);
+}
+
+/* Create section hash table */
+
+htab_t 
+lto_obj_create_section_hash_table (void)
+{
+  return htab_create (37, hash_name, eq_name, free_with_string);
+}
+
+/* Delete an allocated integer KEY in the splay tree.  */
+
+static void
+lto_splay_tree_delete_id (splay_tree_key key)
+{
+  free ((void *) key);
+}
+
+/* Compare splay tree node ids A and B.  */
+
+static int
+lto_splay_tree_compare_ids (splay_tree_key a, splay_tree_key b)
+{
+  unsigned HOST_WIDE_INT ai;
+  unsigned HOST_WIDE_INT bi;
+
+  ai = *(unsigned HOST_WIDE_INT *) a;
+  bi = *(unsigned HOST_WIDE_INT *) b;
+
+  if (ai < bi)
+    return -1;
+  else if (ai > bi)
+    return 1;
+  return 0;
+}
+
+/* Look up splay tree node by ID in splay tree T.  */
+
+static splay_tree_node
+lto_splay_tree_lookup (splay_tree t, unsigned HOST_WIDE_INT id)
+{
+  return splay_tree_lookup (t, (splay_tree_key) &id);
+}
+
+/* Check if KEY has ID.  */
+
+static bool
+lto_splay_tree_id_equal_p (splay_tree_key key, unsigned HOST_WIDE_INT id)
+{
+  return *(unsigned HOST_WIDE_INT *) key == id;
+}
+
+/* Insert a splay tree node into tree T with ID as key and FILE_DATA as value. 
+   The ID is allocated separately because we need HOST_WIDE_INTs which may
+   be wider than a splay_tree_key. */
+
+static void
+lto_splay_tree_insert (splay_tree t, unsigned HOST_WIDE_INT id,
+		       struct lto_file_decl_data *file_data)
+{
+  unsigned HOST_WIDE_INT *idp = XCNEW (unsigned HOST_WIDE_INT);
+  *idp = id;
+  splay_tree_insert (t, (splay_tree_key) idp, (splay_tree_value) file_data);
+}
+
+/* Create a splay tree.  */
+
+static splay_tree
+lto_splay_tree_new (void)
+{
+  return splay_tree_new (lto_splay_tree_compare_ids,
+	 	         lto_splay_tree_delete_id,
+			 NULL);
+}
+
+/* Return true when NODE has a clone that is analyzed (i.e. we need
+   to load its body even if the node itself is not needed).  */
+
+static bool
+has_analyzed_clone_p (struct cgraph_node *node)
+{
+  struct cgraph_node *orig = node;
+  node = node->clones;
+  if (node)
+    while (node != orig)
+      {
+	if (node->analyzed)
+	  return true;
+	if (node->clones)
+	  node = node->clones;
+	else if (node->next_sibling_clone)
+	  node = node->next_sibling_clone;
+	else
+	  {
+	    while (node != orig && !node->next_sibling_clone)
+	      node = node->clone_of;
+	    if (node != orig)
+	      node = node->next_sibling_clone;
+	  }
+      }
+  return false;
+}
+
+/* Read the function body for the function associated with NODE.  */
+
+static void
+lto_materialize_function (struct cgraph_node *node)
+{
+  tree decl;
+
+  decl = node->decl;
+  /* Read in functions with body (analyzed nodes)
+     and also functions that are needed to produce virtual clones.  */
+  if ((cgraph_function_with_gimple_body_p (node) && node->analyzed)
+      || node->used_as_abstract_origin
+      || has_analyzed_clone_p (node))
+    {
+      /* Clones don't need to be read.  */
+      if (node->clone_of)
+	return;
+      if (DECL_FUNCTION_PERSONALITY (decl) && !first_personality_decl)
+	first_personality_decl = DECL_FUNCTION_PERSONALITY (decl);
+    }
+
+  /* Let the middle end know about the function.  */
+  rest_of_decl_compilation (decl, 1, 0);
+}
+
+
+/* Decode the content of memory pointed to by DATA in the in decl
+   state object STATE. DATA_IN points to a data_in structure for
+   decoding. Return the address after the decoded object in the
+   input.  */
+
+static const uint32_t *
+lto_read_in_decl_state (struct data_in *data_in, const uint32_t *data,
+			struct lto_in_decl_state *state)
+{
+  uint32_t ix;
+  tree decl;
+  uint32_t i, j;
+
+  ix = *data++;
+  decl = streamer_tree_cache_get_tree (data_in->reader_cache, ix);
+  if (TREE_CODE (decl) != FUNCTION_DECL)
+    {
+      gcc_assert (decl == void_type_node);
+      decl = NULL_TREE;
+    }
+  state->fn_decl = decl;
+
+  for (i = 0; i < LTO_N_DECL_STREAMS; i++)
+    {
+      uint32_t size = *data++;
+      tree *decls = ggc_alloc_vec_tree (size);
+
+      for (j = 0; j < size; j++)
+	decls[j] = streamer_tree_cache_get_tree (data_in->reader_cache, data[j]);
+
+      state->streams[i].size = size;
+      state->streams[i].trees = decls;
+      data += size;
+    }
+
+  return data;
+}
+
+
+/* Global canonical type table.  */
+static htab_t gimple_canonical_types;
+static pointer_map <hashval_t> *canonical_type_hash_cache;
+static unsigned long num_canonical_type_hash_entries;
+static unsigned long num_canonical_type_hash_queries;
+
+static hashval_t iterative_hash_canonical_type (tree type, hashval_t val);
+static hashval_t gimple_canonical_type_hash (const void *p);
+static void gimple_register_canonical_type_1 (tree t, hashval_t hash);
+
+/* Returning a hash value for gimple type TYPE.
+
+   The hash value returned is equal for types considered compatible
+   by gimple_canonical_types_compatible_p.  */
+
+static hashval_t
+hash_canonical_type (tree type)
+{
+  hashval_t v;
+
+  /* Combine a few common features of types so that types are grouped into
+     smaller sets; when searching for existing matching types to merge,
+     only existing types having the same features as the new type will be
+     checked.  */
+  v = iterative_hash_hashval_t (TREE_CODE (type), 0);
+  v = iterative_hash_hashval_t (TYPE_MODE (type), v);
+
+  /* Incorporate common features of numerical types.  */
+  if (INTEGRAL_TYPE_P (type)
+      || SCALAR_FLOAT_TYPE_P (type)
+      || FIXED_POINT_TYPE_P (type)
+      || TREE_CODE (type) == OFFSET_TYPE
+      || POINTER_TYPE_P (type))
+    {
+      v = iterative_hash_hashval_t (TYPE_PRECISION (type), v);
+      v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v);
+    }
+
+  if (VECTOR_TYPE_P (type))
+    {
+      v = iterative_hash_hashval_t (TYPE_VECTOR_SUBPARTS (type), v);
+      v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v);
+    }
+
+  if (TREE_CODE (type) == COMPLEX_TYPE)
+    v = iterative_hash_hashval_t (TYPE_UNSIGNED (type), v);
+
+  /* For pointer and reference types, fold in information about the type
+     pointed to but do not recurse to the pointed-to type.  */
+  if (POINTER_TYPE_P (type))
+    {
+      v = iterative_hash_hashval_t (TYPE_ADDR_SPACE (TREE_TYPE (type)), v);
+      v = iterative_hash_hashval_t (TREE_CODE (TREE_TYPE (type)), v);
+    }
+
+  /* For integer types hash only the string flag.  */
+  if (TREE_CODE (type) == INTEGER_TYPE)
+    v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v);
+
+  /* For array types hash the domain bounds and the string flag.  */
+  if (TREE_CODE (type) == ARRAY_TYPE && TYPE_DOMAIN (type))
+    {
+      v = iterative_hash_hashval_t (TYPE_STRING_FLAG (type), v);
+      /* OMP lowering can introduce error_mark_node in place of
+	 random local decls in types.  */
+      if (TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != error_mark_node)
+	v = iterative_hash_expr (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), v);
+      if (TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != error_mark_node)
+	v = iterative_hash_expr (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), v);
+    }
+
+  /* Recurse for aggregates with a single element type.  */
+  if (TREE_CODE (type) == ARRAY_TYPE
+      || TREE_CODE (type) == COMPLEX_TYPE
+      || TREE_CODE (type) == VECTOR_TYPE)
+    v = iterative_hash_canonical_type (TREE_TYPE (type), v);
+
+  /* Incorporate function return and argument types.  */
+  if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
+    {
+      unsigned na;
+      tree p;
+
+      /* For method types also incorporate their parent class.  */
+      if (TREE_CODE (type) == METHOD_TYPE)
+	v = iterative_hash_canonical_type (TYPE_METHOD_BASETYPE (type), v);
+
+      v = iterative_hash_canonical_type (TREE_TYPE (type), v);
+
+      for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p))
+	{
+	  v = iterative_hash_canonical_type (TREE_VALUE (p), v);
+	  na++;
+	}
+
+      v = iterative_hash_hashval_t (na, v);
+    }
+
+  if (RECORD_OR_UNION_TYPE_P (type))
+    {
+      unsigned nf;
+      tree f;
+
+      for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f))
+	if (TREE_CODE (f) == FIELD_DECL)
+	  {
+	    v = iterative_hash_canonical_type (TREE_TYPE (f), v);
+	    nf++;
+	  }
+
+      v = iterative_hash_hashval_t (nf, v);
+    }
+
+  return v;
+}
+
+/* Returning a hash value for gimple type TYPE combined with VAL.  */
+
+static hashval_t
+iterative_hash_canonical_type (tree type, hashval_t val)
+{
+  hashval_t v;
+  /* An already processed type.  */
+  if (TYPE_CANONICAL (type))
+    {
+      type = TYPE_CANONICAL (type);
+      v = gimple_canonical_type_hash (type);
+    }
+  else
+    {
+      /* Canonical types should not be able to form SCCs by design, this
+	 recursion is just because we do not register canonical types in
+	 optimal order.  To avoid quadratic behavior also register the
+	 type here.  */
+      v = hash_canonical_type (type);
+      gimple_register_canonical_type_1 (type, v);
+    }
+  return iterative_hash_hashval_t (v, val);
+}
+
+/* Returns the hash for a canonical type P.  */
+
+static hashval_t
+gimple_canonical_type_hash (const void *p)
+{
+  num_canonical_type_hash_queries++;
+  hashval_t *slot
+    = canonical_type_hash_cache->contains (CONST_CAST_TREE ((const_tree) p));
+  gcc_assert (slot != NULL);
+  return *slot;
+}
+
+
+/* The TYPE_CANONICAL merging machinery.  It should closely resemble
+   the middle-end types_compatible_p function.  It needs to avoid
+   claiming types are different for types that should be treated
+   the same with respect to TBAA.  Canonical types are also used
+   for IL consistency checks via the useless_type_conversion_p
+   predicate which does not handle all type kinds itself but falls
+   back to pointer-comparison of TYPE_CANONICAL for aggregates
+   for example.  */
+
+/* Return true iff T1 and T2 are structurally identical for what
+   TBAA is concerned.  */
+
+static bool
+gimple_canonical_types_compatible_p (tree t1, tree t2)
+{
+  /* Before starting to set up the SCC machinery handle simple cases.  */
+
+  /* Check first for the obvious case of pointer identity.  */
+  if (t1 == t2)
+    return true;
+
+  /* Check that we have two types to compare.  */
+  if (t1 == NULL_TREE || t2 == NULL_TREE)
+    return false;
+
+  /* If the types have been previously registered and found equal
+     they still are.  */
+  if (TYPE_CANONICAL (t1)
+      && TYPE_CANONICAL (t1) == TYPE_CANONICAL (t2))
+    return true;
+
+  /* Can't be the same type if the types don't have the same code.  */
+  if (TREE_CODE (t1) != TREE_CODE (t2))
+    return false;
+
+  /* Qualifiers do not matter for canonical type comparison purposes.  */
+
+  /* Void types and nullptr types are always the same.  */
+  if (TREE_CODE (t1) == VOID_TYPE
+      || TREE_CODE (t1) == NULLPTR_TYPE)
+    return true;
+
+  /* Can't be the same type if they have different mode.  */
+  if (TYPE_MODE (t1) != TYPE_MODE (t2))
+    return false;
+
+  /* Non-aggregate types can be handled cheaply.  */
+  if (INTEGRAL_TYPE_P (t1)
+      || SCALAR_FLOAT_TYPE_P (t1)
+      || FIXED_POINT_TYPE_P (t1)
+      || TREE_CODE (t1) == VECTOR_TYPE
+      || TREE_CODE (t1) == COMPLEX_TYPE
+      || TREE_CODE (t1) == OFFSET_TYPE
+      || POINTER_TYPE_P (t1))
+    {
+      /* Can't be the same type if they have different sign or precision.  */
+      if (TYPE_PRECISION (t1) != TYPE_PRECISION (t2)
+	  || TYPE_UNSIGNED (t1) != TYPE_UNSIGNED (t2))
+	return false;
+
+      if (TREE_CODE (t1) == INTEGER_TYPE
+	  && TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2))
+	return false;
+
+      /* For canonical type comparisons we do not want to build SCCs
+	 so we cannot compare pointed-to types.  But we can, for now,
+	 require the same pointed-to type kind and match what
+	 useless_type_conversion_p would do.  */
+      if (POINTER_TYPE_P (t1))
+	{
+	  if (TYPE_ADDR_SPACE (TREE_TYPE (t1))
+	      != TYPE_ADDR_SPACE (TREE_TYPE (t2)))
+	    return false;
+
+	  if (TREE_CODE (TREE_TYPE (t1)) != TREE_CODE (TREE_TYPE (t2)))
+	    return false;
+	}
+
+      /* Tail-recurse to components.  */
+      if (TREE_CODE (t1) == VECTOR_TYPE
+	  || TREE_CODE (t1) == COMPLEX_TYPE)
+	return gimple_canonical_types_compatible_p (TREE_TYPE (t1),
+						    TREE_TYPE (t2));
+
+      return true;
+    }
+
+  /* Do type-specific comparisons.  */
+  switch (TREE_CODE (t1))
+    {
+    case ARRAY_TYPE:
+      /* Array types are the same if the element types are the same and
+	 the number of elements are the same.  */
+      if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2))
+	  || TYPE_STRING_FLAG (t1) != TYPE_STRING_FLAG (t2)
+	  || TYPE_NONALIASED_COMPONENT (t1) != TYPE_NONALIASED_COMPONENT (t2))
+	return false;
+      else
+	{
+	  tree i1 = TYPE_DOMAIN (t1);
+	  tree i2 = TYPE_DOMAIN (t2);
+
+	  /* For an incomplete external array, the type domain can be
+ 	     NULL_TREE.  Check this condition also.  */
+	  if (i1 == NULL_TREE && i2 == NULL_TREE)
+	    return true;
+	  else if (i1 == NULL_TREE || i2 == NULL_TREE)
+	    return false;
+	  else
+	    {
+	      tree min1 = TYPE_MIN_VALUE (i1);
+	      tree min2 = TYPE_MIN_VALUE (i2);
+	      tree max1 = TYPE_MAX_VALUE (i1);
+	      tree max2 = TYPE_MAX_VALUE (i2);
+
+	      /* The minimum/maximum values have to be the same.  */
+	      if ((min1 == min2
+		   || (min1 && min2
+		       && ((TREE_CODE (min1) == PLACEHOLDER_EXPR
+			    && TREE_CODE (min2) == PLACEHOLDER_EXPR)
+		           || operand_equal_p (min1, min2, 0))))
+		  && (max1 == max2
+		      || (max1 && max2
+			  && ((TREE_CODE (max1) == PLACEHOLDER_EXPR
+			       && TREE_CODE (max2) == PLACEHOLDER_EXPR)
+			      || operand_equal_p (max1, max2, 0)))))
+		return true;
+	      else
+		return false;
+	    }
+	}
+
+    case METHOD_TYPE:
+    case FUNCTION_TYPE:
+      /* Function types are the same if the return type and arguments types
+	 are the same.  */
+      if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2)))
+	return false;
+
+      if (!comp_type_attributes (t1, t2))
+	return false;
+
+      if (TYPE_ARG_TYPES (t1) == TYPE_ARG_TYPES (t2))
+	return true;
+      else
+	{
+	  tree parms1, parms2;
+
+	  for (parms1 = TYPE_ARG_TYPES (t1), parms2 = TYPE_ARG_TYPES (t2);
+	       parms1 && parms2;
+	       parms1 = TREE_CHAIN (parms1), parms2 = TREE_CHAIN (parms2))
+	    {
+	      if (!gimple_canonical_types_compatible_p
+		     (TREE_VALUE (parms1), TREE_VALUE (parms2)))
+		return false;
+	    }
+
+	  if (parms1 || parms2)
+	    return false;
+
+	  return true;
+	}
+
+    case RECORD_TYPE:
+    case UNION_TYPE:
+    case QUAL_UNION_TYPE:
+      {
+	tree f1, f2;
+
+	/* For aggregate types, all the fields must be the same.  */
+	for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2);
+	     f1 || f2;
+	     f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2))
+	  {
+	    /* Skip non-fields.  */
+	    while (f1 && TREE_CODE (f1) != FIELD_DECL)
+	      f1 = TREE_CHAIN (f1);
+	    while (f2 && TREE_CODE (f2) != FIELD_DECL)
+	      f2 = TREE_CHAIN (f2);
+	    if (!f1 || !f2)
+	      break;
+	    /* The fields must have the same name, offset and type.  */
+	    if (DECL_NONADDRESSABLE_P (f1) != DECL_NONADDRESSABLE_P (f2)
+		|| !gimple_compare_field_offset (f1, f2)
+		|| !gimple_canonical_types_compatible_p
+		      (TREE_TYPE (f1), TREE_TYPE (f2)))
+	      return false;
+	  }
+
+	/* If one aggregate has more fields than the other, they
+	   are not the same.  */
+	if (f1 || f2)
+	  return false;
+
+	return true;
+      }
+
+    default:
+      gcc_unreachable ();
+    }
+}
+
+
+/* Returns nonzero if P1 and P2 are equal.  */
+
+static int
+gimple_canonical_type_eq (const void *p1, const void *p2)
+{
+  const_tree t1 = (const_tree) p1;
+  const_tree t2 = (const_tree) p2;
+  return gimple_canonical_types_compatible_p (CONST_CAST_TREE (t1),
+					      CONST_CAST_TREE (t2));
+}
+
+/* Main worker for gimple_register_canonical_type.  */
+
+static void
+gimple_register_canonical_type_1 (tree t, hashval_t hash)
+{
+  void **slot;
+
+  gcc_checking_assert (TYPE_P (t) && !TYPE_CANONICAL (t));
+
+  slot = htab_find_slot_with_hash (gimple_canonical_types, t, hash, INSERT);
+  if (*slot)
+    {
+      tree new_type = (tree)(*slot);
+      gcc_checking_assert (new_type != t);
+      TYPE_CANONICAL (t) = new_type;
+    }
+  else
+    {
+      TYPE_CANONICAL (t) = t;
+      *slot = (void *) t;
+      /* Cache the just computed hash value.  */
+      num_canonical_type_hash_entries++;
+      bool existed_p;
+      hashval_t *hslot = canonical_type_hash_cache->insert (t, &existed_p);
+      gcc_assert (!existed_p);
+      *hslot = hash;
+    }
+}
+
+/* Register type T in the global type table gimple_types and set
+   TYPE_CANONICAL of T accordingly.
+   This is used by LTO to merge structurally equivalent types for
+   type-based aliasing purposes across different TUs and languages.
+
+   ???  This merging does not exactly match how the tree.c middle-end
+   functions will assign TYPE_CANONICAL when new types are created
+   during optimization (which at least happens for pointer and array
+   types).  */
+
+static void
+gimple_register_canonical_type (tree t)
+{
+  if (TYPE_CANONICAL (t))
+    return;
+
+  gimple_register_canonical_type_1 (t, hash_canonical_type (t));
+}
+
+/* Re-compute TYPE_CANONICAL for NODE and related types.  */
+
+static void
+lto_register_canonical_types (tree node, bool first_p)
+{
+  if (!node
+      || !TYPE_P (node))
+    return;
+
+  if (first_p)
+    TYPE_CANONICAL (node) = NULL_TREE;
+
+  if (POINTER_TYPE_P (node)
+      || TREE_CODE (node) == COMPLEX_TYPE
+      || TREE_CODE (node) == ARRAY_TYPE)
+    lto_register_canonical_types (TREE_TYPE (node), first_p);
+
+ if (!first_p) 
+    gimple_register_canonical_type (node);
+}
+
+
+/* Remember trees that contains references to declarations.  */
+static GTY(()) vec <tree, va_gc> *tree_with_vars;
+
+#define CHECK_VAR(tt) \
+  do \
+    { \
+      if ((tt) && VAR_OR_FUNCTION_DECL_P (tt) \
+	  && (TREE_PUBLIC (tt) || DECL_EXTERNAL (tt))) \
+	return true; \
+    } while (0)
+
+#define CHECK_NO_VAR(tt) \
+  gcc_checking_assert (!(tt) || !VAR_OR_FUNCTION_DECL_P (tt))
+
+/* Check presence of pointers to decls in fields of a tree_typed T.  */
+
+static inline bool
+mentions_vars_p_typed (tree t)
+{
+  CHECK_NO_VAR (TREE_TYPE (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a tree_common T.  */
+
+static inline bool
+mentions_vars_p_common (tree t)
+{
+  if (mentions_vars_p_typed (t))
+    return true;
+  CHECK_NO_VAR (TREE_CHAIN (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a decl_minimal T.  */
+
+static inline bool
+mentions_vars_p_decl_minimal (tree t)
+{
+  if (mentions_vars_p_common (t))
+    return true;
+  CHECK_NO_VAR (DECL_NAME (t));
+  CHECK_VAR (DECL_CONTEXT (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a decl_common T.  */
+
+static inline bool
+mentions_vars_p_decl_common (tree t)
+{
+  if (mentions_vars_p_decl_minimal (t))
+    return true;
+  CHECK_VAR (DECL_SIZE (t));
+  CHECK_VAR (DECL_SIZE_UNIT (t));
+  CHECK_VAR (DECL_INITIAL (t));
+  CHECK_NO_VAR (DECL_ATTRIBUTES (t));
+  CHECK_VAR (DECL_ABSTRACT_ORIGIN (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a decl_with_vis T.  */
+
+static inline bool
+mentions_vars_p_decl_with_vis (tree t)
+{
+  if (mentions_vars_p_decl_common (t))
+    return true;
+
+  /* Accessor macro has side-effects, use field-name here. */
+  CHECK_NO_VAR (t->decl_with_vis.assembler_name);
+  CHECK_NO_VAR (DECL_SECTION_NAME (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a decl_non_common T.  */
+
+static inline bool
+mentions_vars_p_decl_non_common (tree t)
+{
+  if (mentions_vars_p_decl_with_vis (t))
+    return true;
+  CHECK_NO_VAR (DECL_ARGUMENT_FLD (t));
+  CHECK_NO_VAR (DECL_RESULT_FLD (t));
+  CHECK_NO_VAR (DECL_VINDEX (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a decl_non_common T.  */
+
+static bool
+mentions_vars_p_function (tree t)
+{
+  if (mentions_vars_p_decl_non_common (t))
+    return true;
+  CHECK_VAR (DECL_FUNCTION_PERSONALITY (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a field_decl T.  */
+
+static bool
+mentions_vars_p_field_decl (tree t)
+{
+  if (mentions_vars_p_decl_common (t))
+    return true;
+  CHECK_VAR (DECL_FIELD_OFFSET (t));
+  CHECK_NO_VAR (DECL_BIT_FIELD_TYPE (t));
+  CHECK_NO_VAR (DECL_QUALIFIER (t));
+  CHECK_NO_VAR (DECL_FIELD_BIT_OFFSET (t));
+  CHECK_NO_VAR (DECL_FCONTEXT (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a type T.  */
+
+static bool
+mentions_vars_p_type (tree t)
+{
+  if (mentions_vars_p_common (t))
+    return true;
+  CHECK_NO_VAR (TYPE_CACHED_VALUES (t));
+  CHECK_VAR (TYPE_SIZE (t));
+  CHECK_VAR (TYPE_SIZE_UNIT (t));
+  CHECK_NO_VAR (TYPE_ATTRIBUTES (t));
+  CHECK_NO_VAR (TYPE_NAME (t));
+
+  CHECK_VAR (TYPE_MINVAL (t));
+  CHECK_VAR (TYPE_MAXVAL (t));
+
+  /* Accessor is for derived node types only. */
+  CHECK_NO_VAR (t->type_non_common.binfo);
+
+  CHECK_VAR (TYPE_CONTEXT (t));
+  CHECK_NO_VAR (TYPE_CANONICAL (t));
+  CHECK_NO_VAR (TYPE_MAIN_VARIANT (t));
+  CHECK_NO_VAR (TYPE_NEXT_VARIANT (t));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a BINFO T.  */
+
+static bool
+mentions_vars_p_binfo (tree t)
+{
+  unsigned HOST_WIDE_INT i, n;
+
+  if (mentions_vars_p_common (t))
+    return true;
+  CHECK_VAR (BINFO_VTABLE (t));
+  CHECK_NO_VAR (BINFO_OFFSET (t));
+  CHECK_NO_VAR (BINFO_VIRTUALS (t));
+  CHECK_NO_VAR (BINFO_VPTR_FIELD (t));
+  n = vec_safe_length (BINFO_BASE_ACCESSES (t));
+  for (i = 0; i < n; i++)
+    CHECK_NO_VAR (BINFO_BASE_ACCESS (t, i));
+  /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
+     and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
+  n = BINFO_N_BASE_BINFOS (t);
+  for (i = 0; i < n; i++)
+    CHECK_NO_VAR (BINFO_BASE_BINFO (t, i));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of a CONSTRUCTOR T.  */
+
+static bool
+mentions_vars_p_constructor (tree t)
+{
+  unsigned HOST_WIDE_INT idx;
+  constructor_elt *ce;
+
+  if (mentions_vars_p_typed (t))
+    return true;
+
+  for (idx = 0; vec_safe_iterate (CONSTRUCTOR_ELTS (t), idx, &ce); idx++)
+    {
+      CHECK_NO_VAR (ce->index);
+      CHECK_VAR (ce->value);
+    }
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of an expression tree T.  */
+
+static bool
+mentions_vars_p_expr (tree t)
+{
+  int i;
+  if (mentions_vars_p_typed (t))
+    return true;
+  for (i = TREE_OPERAND_LENGTH (t) - 1; i >= 0; --i)
+    CHECK_VAR (TREE_OPERAND (t, i));
+  return false;
+}
+
+/* Check presence of pointers to decls in fields of an OMP_CLAUSE T.  */
+
+static bool
+mentions_vars_p_omp_clause (tree t)
+{
+  int i;
+  if (mentions_vars_p_common (t))
+    return true;
+  for (i = omp_clause_num_ops[OMP_CLAUSE_CODE (t)] - 1; i >= 0; --i)
+    CHECK_VAR (OMP_CLAUSE_OPERAND (t, i));
+  return false;
+}
+
+/* Check presence of pointers to decls that needs later fixup in T.  */
+
+static bool
+mentions_vars_p (tree t)
+{
+  switch (TREE_CODE (t))
+    {
+    case IDENTIFIER_NODE:
+      break;
+
+    case TREE_LIST:
+      CHECK_VAR (TREE_VALUE (t));
+      CHECK_VAR (TREE_PURPOSE (t));
+      CHECK_NO_VAR (TREE_CHAIN (t));
+      break;
+
+    case FIELD_DECL:
+      return mentions_vars_p_field_decl (t);
+
+    case LABEL_DECL:
+    case CONST_DECL:
+    case PARM_DECL:
+    case RESULT_DECL:
+    case IMPORTED_DECL:
+    case NAMESPACE_DECL:
+    case NAMELIST_DECL:
+      return mentions_vars_p_decl_common (t);
+
+    case VAR_DECL:
+      return mentions_vars_p_decl_with_vis (t);
+
+    case TYPE_DECL:
+      return mentions_vars_p_decl_non_common (t);
+
+    case FUNCTION_DECL:
+      return mentions_vars_p_function (t);
+
+    case TREE_BINFO:
+      return mentions_vars_p_binfo (t);
+
+    case PLACEHOLDER_EXPR:
+      return mentions_vars_p_common (t);
+
+    case BLOCK:
+    case TRANSLATION_UNIT_DECL:
+    case OPTIMIZATION_NODE:
+    case TARGET_OPTION_NODE:
+      break;
+
+    case CONSTRUCTOR:
+      return mentions_vars_p_constructor (t);
+
+    case OMP_CLAUSE:
+      return mentions_vars_p_omp_clause (t);
+
+    default:
+      if (TYPE_P (t))
+	{
+	  if (mentions_vars_p_type (t))
+	    return true;
+	}
+      else if (EXPR_P (t))
+	{
+	  if (mentions_vars_p_expr (t))
+	    return true;
+	}
+      else if (CONSTANT_CLASS_P (t))
+	CHECK_NO_VAR (TREE_TYPE (t));
+      else
+	gcc_unreachable ();
+    }
+  return false;
+}
+
+
+/* Return the resolution for the decl with index INDEX from DATA_IN. */
+
+static enum ld_plugin_symbol_resolution
+get_resolution (struct data_in *data_in, unsigned index)
+{
+  if (data_in->globals_resolution.exists ())
+    {
+      ld_plugin_symbol_resolution_t ret;
+      /* We can have references to not emitted functions in
+	 DECL_FUNCTION_PERSONALITY at least.  So we can and have
+	 to indeed return LDPR_UNKNOWN in some cases.   */
+      if (data_in->globals_resolution.length () <= index)
+	return LDPR_UNKNOWN;
+      ret = data_in->globals_resolution[index];
+      return ret;
+    }
+  else
+    /* Delay resolution finding until decl merging.  */
+    return LDPR_UNKNOWN;
+}
+
+/* We need to record resolutions until symbol table is read.  */
+static void
+register_resolution (struct lto_file_decl_data *file_data, tree decl,
+		     enum ld_plugin_symbol_resolution resolution)
+{
+  if (resolution == LDPR_UNKNOWN)
+    return;
+  if (!file_data->resolution_map)
+    file_data->resolution_map = pointer_map_create ();
+  *pointer_map_insert (file_data->resolution_map, decl) = (void *)(size_t)resolution;
+}
+
+/* Register DECL with the global symbol table and change its
+   name if necessary to avoid name clashes for static globals across
+   different files.  */
+
+static void
+lto_register_var_decl_in_symtab (struct data_in *data_in, tree decl,
+				 unsigned ix)
+{
+  tree context;
+
+  /* Variable has file scope, not local.  */
+  if (!TREE_PUBLIC (decl)
+      && !((context = decl_function_context (decl))
+	   && auto_var_in_fn_p (decl, context)))
+    rest_of_decl_compilation (decl, 1, 0);
+
+  /* If this variable has already been declared, queue the
+     declaration for merging.  */
+  if (TREE_PUBLIC (decl))
+    register_resolution (data_in->file_data,
+			 decl, get_resolution (data_in, ix));
+}
+
+
+/* Register DECL with the global symbol table and change its
+   name if necessary to avoid name clashes for static globals across
+   different files.  DATA_IN contains descriptors and tables for the
+   file being read.  */
+
+static void
+lto_register_function_decl_in_symtab (struct data_in *data_in, tree decl,
+				      unsigned ix)
+{
+  /* If this variable has already been declared, queue the
+     declaration for merging.  */
+  if (TREE_PUBLIC (decl) && !DECL_ABSTRACT (decl))
+    register_resolution (data_in->file_data,
+			 decl, get_resolution (data_in, ix));
+}
+
+
+/* For the type T re-materialize it in the type variant list and
+   the pointer/reference-to chains.  */
+
+static void
+lto_fixup_prevailing_type (tree t)
+{
+  /* The following re-creates proper variant lists while fixing up
+     the variant leaders.  We do not stream TYPE_NEXT_VARIANT so the
+     variant list state before fixup is broken.  */
+
+  /* If we are not our own variant leader link us into our new leaders
+     variant list.  */
+  if (TYPE_MAIN_VARIANT (t) != t)
+    {
+      tree mv = TYPE_MAIN_VARIANT (t);
+      TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (mv);
+      TYPE_NEXT_VARIANT (mv) = t;
+    }
+
+  /* The following reconstructs the pointer chains
+     of the new pointed-to type if we are a main variant.  We do
+     not stream those so they are broken before fixup.  */
+  if (TREE_CODE (t) == POINTER_TYPE
+      && TYPE_MAIN_VARIANT (t) == t)
+    {
+      TYPE_NEXT_PTR_TO (t) = TYPE_POINTER_TO (TREE_TYPE (t));
+      TYPE_POINTER_TO (TREE_TYPE (t)) = t;
+    }
+  else if (TREE_CODE (t) == REFERENCE_TYPE
+	   && TYPE_MAIN_VARIANT (t) == t)
+    {
+      TYPE_NEXT_REF_TO (t) = TYPE_REFERENCE_TO (TREE_TYPE (t));
+      TYPE_REFERENCE_TO (TREE_TYPE (t)) = t;
+    }
+}
+
+
+/* We keep prevailing tree SCCs in a hashtable with manual collision
+   handling (in case all hashes compare the same) and keep the colliding
+   entries in the tree_scc->next chain.  */
+
+struct tree_scc
+{
+  tree_scc *next;
+  /* Hash of the whole SCC.  */
+  hashval_t hash;
+  /* Number of trees in the SCC.  */
+  unsigned len;
+  /* Number of possible entries into the SCC (tree nodes [0..entry_len-1]
+     which share the same individual tree hash).  */
+  unsigned entry_len;
+  /* The members of the SCC.
+     We only need to remember the first entry node candidate for prevailing
+     SCCs (but of course have access to all entries for SCCs we are
+     processing).
+     ???  For prevailing SCCs we really only need hash and the first
+     entry candidate, but that's too awkward to implement.  */
+  tree entries[1];
+};
+
+struct tree_scc_hasher : typed_noop_remove <tree_scc>
+{
+  typedef tree_scc value_type;
+  typedef tree_scc compare_type;
+  static inline hashval_t hash (const value_type *);
+  static inline bool equal (const value_type *, const compare_type *);
+};
+
+hashval_t
+tree_scc_hasher::hash (const value_type *scc)
+{
+  return scc->hash;
+}
+
+bool
+tree_scc_hasher::equal (const value_type *scc1, const compare_type *scc2)
+{
+  if (scc1->hash != scc2->hash
+      || scc1->len != scc2->len
+      || scc1->entry_len != scc2->entry_len)
+    return false;
+  return true;
+}
+
+static hash_table <tree_scc_hasher> tree_scc_hash;
+static struct obstack tree_scc_hash_obstack;
+
+static unsigned long num_merged_types;
+static unsigned long num_prevailing_types;
+static unsigned long num_type_scc_trees;
+static unsigned long total_scc_size;
+static unsigned long num_sccs_read;
+static unsigned long total_scc_size_merged;
+static unsigned long num_sccs_merged;
+static unsigned long num_scc_compares;
+static unsigned long num_scc_compare_collisions;
+
+
+/* Compare the two entries T1 and T2 of two SCCs that are possibly equal,
+   recursing through in-SCC tree edges.  Returns true if the SCCs entered
+   through T1 and T2 are equal and fills in *MAP with the pairs of
+   SCC entries we visited, starting with (*MAP)[0] = T1 and (*MAP)[1] = T2.  */
+
+static bool
+compare_tree_sccs_1 (tree t1, tree t2, tree **map)
+{
+  enum tree_code code;
+
+  /* Mark already visited nodes.  */
+  TREE_ASM_WRITTEN (t2) = 1;
+
+  /* Push the pair onto map.  */
+  (*map)[0] = t1;
+  (*map)[1] = t2;
+  *map = *map + 2;
+
+  /* Compare value-fields.  */
+#define compare_values(X) \
+  do { \
+    if (X(t1) != X(t2)) \
+      return false; \
+  } while (0)
+
+  compare_values (TREE_CODE);
+  code = TREE_CODE (t1);
+
+  if (!TYPE_P (t1))
+    {
+      compare_values (TREE_SIDE_EFFECTS);
+      compare_values (TREE_CONSTANT);
+      compare_values (TREE_READONLY);
+      compare_values (TREE_PUBLIC);
+    }
+  compare_values (TREE_ADDRESSABLE);
+  compare_values (TREE_THIS_VOLATILE);
+  if (DECL_P (t1))
+    compare_values (DECL_UNSIGNED);
+  else if (TYPE_P (t1))
+    compare_values (TYPE_UNSIGNED);
+  if (TYPE_P (t1))
+    compare_values (TYPE_ARTIFICIAL);
+  else
+    compare_values (TREE_NO_WARNING);
+  compare_values (TREE_NOTHROW);
+  compare_values (TREE_STATIC);
+  if (code != TREE_BINFO)
+    compare_values (TREE_PRIVATE);
+  compare_values (TREE_PROTECTED);
+  compare_values (TREE_DEPRECATED);
+  if (TYPE_P (t1))
+    {
+      compare_values (TYPE_SATURATING);
+      compare_values (TYPE_ADDR_SPACE);
+    }
+  else if (code == SSA_NAME)
+    compare_values (SSA_NAME_IS_DEFAULT_DEF);
+
+  if (CODE_CONTAINS_STRUCT (code, TS_INT_CST))
+    {
+      compare_values (TREE_INT_CST_LOW);
+      compare_values (TREE_INT_CST_HIGH);
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST))
+    {
+      /* ???  No suitable compare routine available.  */
+      REAL_VALUE_TYPE r1 = TREE_REAL_CST (t1);
+      REAL_VALUE_TYPE r2 = TREE_REAL_CST (t2);
+      if (r1.cl != r2.cl
+	  || r1.decimal != r2.decimal
+	  || r1.sign != r2.sign
+	  || r1.signalling != r2.signalling
+	  || r1.canonical != r2.canonical
+	  || r1.uexp != r2.uexp)
+	return false;
+      for (unsigned i = 0; i < SIGSZ; ++i)
+	if (r1.sig[i] != r2.sig[i])
+	  return false;
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST))
+    if (!fixed_compare (EQ_EXPR,
+			TREE_FIXED_CST_PTR (t1), TREE_FIXED_CST_PTR (t2)))
+      return false;
+
+
+  /* We don't want to compare locations, so there is nothing do compare
+     for TS_DECL_MINIMAL.  */
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
+    {
+      compare_values (DECL_MODE);
+      compare_values (DECL_NONLOCAL);
+      compare_values (DECL_VIRTUAL_P);
+      compare_values (DECL_IGNORED_P);
+      compare_values (DECL_ABSTRACT);
+      compare_values (DECL_ARTIFICIAL);
+      compare_values (DECL_USER_ALIGN);
+      compare_values (DECL_PRESERVE_P);
+      compare_values (DECL_EXTERNAL);
+      compare_values (DECL_GIMPLE_REG_P);
+      compare_values (DECL_ALIGN);
+      if (code == LABEL_DECL)
+	{
+	  compare_values (EH_LANDING_PAD_NR);
+	  compare_values (LABEL_DECL_UID);
+	}
+      else if (code == FIELD_DECL)
+	{
+	  compare_values (DECL_PACKED);
+	  compare_values (DECL_NONADDRESSABLE_P);
+	  compare_values (DECL_OFFSET_ALIGN);
+	}
+      else if (code == VAR_DECL)
+	{
+	  compare_values (DECL_HAS_DEBUG_EXPR_P);
+	  compare_values (DECL_NONLOCAL_FRAME);
+	}
+      if (code == RESULT_DECL
+	  || code == PARM_DECL
+	  || code == VAR_DECL)
+	{
+	  compare_values (DECL_BY_REFERENCE);
+	  if (code == VAR_DECL
+	      || code == PARM_DECL)
+	    compare_values (DECL_HAS_VALUE_EXPR_P);
+	}
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL))
+    compare_values (DECL_REGISTER);
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
+    {
+      compare_values (DECL_COMMON);
+      compare_values (DECL_DLLIMPORT_P);
+      compare_values (DECL_WEAK);
+      compare_values (DECL_SEEN_IN_BIND_EXPR_P);
+      compare_values (DECL_COMDAT);
+      compare_values (DECL_VISIBILITY);
+      compare_values (DECL_VISIBILITY_SPECIFIED);
+      if (code == VAR_DECL)
+	{
+	  compare_values (DECL_HARD_REGISTER);
+          /* DECL_IN_TEXT_SECTION is set during final asm output only.  */
+	  compare_values (DECL_IN_CONSTANT_POOL);
+	  compare_values (DECL_TLS_MODEL);
+	}
+      if (VAR_OR_FUNCTION_DECL_P (t1))
+	compare_values (DECL_INIT_PRIORITY);
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
+    {
+      compare_values (DECL_BUILT_IN_CLASS);
+      compare_values (DECL_STATIC_CONSTRUCTOR);
+      compare_values (DECL_STATIC_DESTRUCTOR);
+      compare_values (DECL_UNINLINABLE);
+      compare_values (DECL_POSSIBLY_INLINED);
+      compare_values (DECL_IS_NOVOPS);
+      compare_values (DECL_IS_RETURNS_TWICE);
+      compare_values (DECL_IS_MALLOC);
+      compare_values (DECL_IS_OPERATOR_NEW);
+      compare_values (DECL_DECLARED_INLINE_P);
+      compare_values (DECL_STATIC_CHAIN);
+      compare_values (DECL_NO_INLINE_WARNING_P);
+      compare_values (DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT);
+      compare_values (DECL_NO_LIMIT_STACK);
+      compare_values (DECL_DISREGARD_INLINE_LIMITS);
+      compare_values (DECL_PURE_P);
+      compare_values (DECL_LOOPING_CONST_OR_PURE_P);
+      compare_values (DECL_FINAL_P);
+      compare_values (DECL_CXX_CONSTRUCTOR_P);
+      compare_values (DECL_CXX_DESTRUCTOR_P);
+      if (DECL_BUILT_IN_CLASS (t1) != NOT_BUILT_IN)
+	compare_values (DECL_FUNCTION_CODE);
+      if (DECL_STATIC_DESTRUCTOR (t1))
+	compare_values (DECL_FINI_PRIORITY);
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
+    {
+      compare_values (TYPE_MODE);
+      compare_values (TYPE_STRING_FLAG);
+      compare_values (TYPE_NO_FORCE_BLK);
+      compare_values (TYPE_NEEDS_CONSTRUCTING);
+      if (RECORD_OR_UNION_TYPE_P (t1))
+	{
+	  compare_values (TYPE_TRANSPARENT_AGGR);
+	  compare_values (TYPE_FINAL_P);
+	}
+      else if (code == ARRAY_TYPE)
+	compare_values (TYPE_NONALIASED_COMPONENT);
+      compare_values (TYPE_PACKED);
+      compare_values (TYPE_RESTRICT);
+      compare_values (TYPE_USER_ALIGN);
+      compare_values (TYPE_READONLY);
+      compare_values (TYPE_PRECISION);
+      compare_values (TYPE_ALIGN);
+      compare_values (TYPE_ALIAS_SET);
+    }
+
+  /* We don't want to compare locations, so there is nothing do compare
+     for TS_EXP.  */
+
+  /* BLOCKs are function local and we don't merge anything there, so
+     simply refuse to merge.  */
+  if (CODE_CONTAINS_STRUCT (code, TS_BLOCK))
+    return false;
+
+  if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
+    if (strcmp (TRANSLATION_UNIT_LANGUAGE (t1),
+		TRANSLATION_UNIT_LANGUAGE (t2)) != 0)
+      return false;
+
+  if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
+    gcc_unreachable ();
+
+  if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
+    if (memcmp (TREE_OPTIMIZATION (t1), TREE_OPTIMIZATION (t2),
+		sizeof (struct cl_optimization)) != 0)
+      return false;
+
+  if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
+    if (vec_safe_length (BINFO_BASE_ACCESSES (t1))
+	!= vec_safe_length (BINFO_BASE_ACCESSES (t2)))
+      return false;
+
+  if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
+    compare_values (CONSTRUCTOR_NELTS);
+
+  if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER))
+    if (IDENTIFIER_LENGTH (t1) != IDENTIFIER_LENGTH (t2)
+	|| memcmp (IDENTIFIER_POINTER (t1), IDENTIFIER_POINTER (t2),
+		   IDENTIFIER_LENGTH (t1)) != 0)
+      return false;
+
+  if (CODE_CONTAINS_STRUCT (code, TS_STRING))
+    if (TREE_STRING_LENGTH (t1) != TREE_STRING_LENGTH (t2)
+	|| memcmp (TREE_STRING_POINTER (t1), TREE_STRING_POINTER (t2),
+		   TREE_STRING_LENGTH (t1)) != 0)
+      return false;
+
+  if (code == OMP_CLAUSE)
+    {
+      compare_values (OMP_CLAUSE_CODE);
+      switch (OMP_CLAUSE_CODE (t1))
+	{
+	case OMP_CLAUSE_DEFAULT:
+	  compare_values (OMP_CLAUSE_DEFAULT_KIND);
+	  break;
+	case OMP_CLAUSE_SCHEDULE:
+	  compare_values (OMP_CLAUSE_SCHEDULE_KIND);
+	  break;
+	case OMP_CLAUSE_DEPEND:
+	  compare_values (OMP_CLAUSE_DEPEND_KIND);
+	  break;
+	case OMP_CLAUSE_MAP:
+	  compare_values (OMP_CLAUSE_MAP_KIND);
+	  break;
+	case OMP_CLAUSE_PROC_BIND:
+	  compare_values (OMP_CLAUSE_PROC_BIND_KIND);
+	  break;
+	case OMP_CLAUSE_REDUCTION:
+	  compare_values (OMP_CLAUSE_REDUCTION_CODE);
+	  compare_values (OMP_CLAUSE_REDUCTION_GIMPLE_INIT);
+	  compare_values (OMP_CLAUSE_REDUCTION_GIMPLE_MERGE);
+	  break;
+	default:
+	  break;
+	}
+    }
+
+#undef compare_values
+
+
+  /* Compare pointer fields.  */
+
+  /* Recurse.  Search & Replaced from DFS_write_tree_body.
+     Folding the early checks into the compare_tree_edges recursion
+     macro makes debugging way quicker as you are able to break on
+     compare_tree_sccs_1 and simply finish until a call returns false
+     to spot the SCC members with the difference.  */
+#define compare_tree_edges(E1, E2) \
+  do { \
+    tree t1_ = (E1), t2_ = (E2); \
+    if (t1_ != t2_ \
+	&& (!t1_ || !t2_ \
+	    || !TREE_VISITED (t2_) \
+	    || (!TREE_ASM_WRITTEN (t2_) \
+		&& !compare_tree_sccs_1 (t1_, t2_, map)))) \
+      return false; \
+    /* Only non-NULL trees outside of the SCC may compare equal.  */ \
+    gcc_checking_assert (t1_ != t2_ || (!t2_ || !TREE_VISITED (t2_))); \
+  } while (0)
+
+  if (CODE_CONTAINS_STRUCT (code, TS_TYPED))
+    {
+      if (code != IDENTIFIER_NODE)
+	compare_tree_edges (TREE_TYPE (t1), TREE_TYPE (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_VECTOR))
+    {
+      unsigned i;
+      /* Note that the number of elements for EXPR has already been emitted
+	 in EXPR's header (see streamer_write_tree_header).  */
+      for (i = 0; i < VECTOR_CST_NELTS (t1); ++i)
+	compare_tree_edges (VECTOR_CST_ELT (t1, i), VECTOR_CST_ELT (t2, i));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX))
+    {
+      compare_tree_edges (TREE_REALPART (t1), TREE_REALPART (t2));
+      compare_tree_edges (TREE_IMAGPART (t1), TREE_IMAGPART (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL))
+    {
+      compare_tree_edges (DECL_NAME (t1), DECL_NAME (t2));
+      /* ???  Global decls from different TUs have non-matching
+	 TRANSLATION_UNIT_DECLs.  Only consider a small set of
+	 decls equivalent, we should not end up merging others.  */
+      if ((code == TYPE_DECL
+	   || code == NAMESPACE_DECL
+	   || code == IMPORTED_DECL
+	   || code == CONST_DECL
+	   || (VAR_OR_FUNCTION_DECL_P (t1)
+	       && (TREE_PUBLIC (t1) || DECL_EXTERNAL (t1))))
+	  && DECL_FILE_SCOPE_P (t1) && DECL_FILE_SCOPE_P (t2))
+	;
+      else
+	compare_tree_edges (DECL_CONTEXT (t1), DECL_CONTEXT (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
+    {
+      compare_tree_edges (DECL_SIZE (t1), DECL_SIZE (t2));
+      compare_tree_edges (DECL_SIZE_UNIT (t1), DECL_SIZE_UNIT (t2));
+      compare_tree_edges (DECL_ATTRIBUTES (t1), DECL_ATTRIBUTES (t2));
+      if ((code == VAR_DECL
+	   || code == PARM_DECL)
+	  && DECL_HAS_VALUE_EXPR_P (t1))
+	compare_tree_edges (DECL_VALUE_EXPR (t1), DECL_VALUE_EXPR (t2));
+      if (code == VAR_DECL
+	  && DECL_HAS_DEBUG_EXPR_P (t1))
+	compare_tree_edges (DECL_DEBUG_EXPR (t1), DECL_DEBUG_EXPR (t2));
+      /* LTO specific edges.  */
+      if (code != FUNCTION_DECL
+	  && code != TRANSLATION_UNIT_DECL)
+	compare_tree_edges (DECL_INITIAL (t1), DECL_INITIAL (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
+    {
+      if (code == FUNCTION_DECL)
+	{
+	  tree a1, a2;
+	  for (a1 = DECL_ARGUMENTS (t1), a2 = DECL_ARGUMENTS (t2);
+	       a1 || a2;
+	       a1 = TREE_CHAIN (a1), a2 = TREE_CHAIN (a2))
+	    compare_tree_edges (a1, a2);
+	  compare_tree_edges (DECL_RESULT (t1), DECL_RESULT (t2));
+	}
+      else if (code == TYPE_DECL)
+	compare_tree_edges (DECL_ORIGINAL_TYPE (t1), DECL_ORIGINAL_TYPE (t2));
+      compare_tree_edges (DECL_VINDEX (t1), DECL_VINDEX (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
+    {
+      /* Make sure we don't inadvertently set the assembler name.  */
+      if (DECL_ASSEMBLER_NAME_SET_P (t1))
+	compare_tree_edges (DECL_ASSEMBLER_NAME (t1),
+			    DECL_ASSEMBLER_NAME (t2));
+      compare_tree_edges (DECL_SECTION_NAME (t1), DECL_SECTION_NAME (t2));
+      compare_tree_edges (DECL_COMDAT_GROUP (t1), DECL_COMDAT_GROUP (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
+    {
+      compare_tree_edges (DECL_FIELD_OFFSET (t1), DECL_FIELD_OFFSET (t2));
+      compare_tree_edges (DECL_BIT_FIELD_TYPE (t1), DECL_BIT_FIELD_TYPE (t2));
+      compare_tree_edges (DECL_BIT_FIELD_REPRESENTATIVE (t1),
+			  DECL_BIT_FIELD_REPRESENTATIVE (t2));
+      compare_tree_edges (DECL_FIELD_BIT_OFFSET (t1),
+			  DECL_FIELD_BIT_OFFSET (t2));
+      compare_tree_edges (DECL_FCONTEXT (t1), DECL_FCONTEXT (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
+    {
+      compare_tree_edges (DECL_FUNCTION_PERSONALITY (t1),
+			  DECL_FUNCTION_PERSONALITY (t2));
+      /* DECL_FUNCTION_SPECIFIC_TARGET is not yet created.  We compare
+         the attribute list instead.  */
+      compare_tree_edges (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (t1),
+			  DECL_FUNCTION_SPECIFIC_OPTIMIZATION (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON))
+    {
+      compare_tree_edges (TYPE_SIZE (t1), TYPE_SIZE (t2));
+      compare_tree_edges (TYPE_SIZE_UNIT (t1), TYPE_SIZE_UNIT (t2));
+      compare_tree_edges (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2));
+      compare_tree_edges (TYPE_NAME (t1), TYPE_NAME (t2));
+      /* Do not compare TYPE_POINTER_TO or TYPE_REFERENCE_TO.  They will be
+	 reconstructed during fixup.  */
+      /* Do not compare TYPE_NEXT_VARIANT, we reconstruct the variant lists
+	 during fixup.  */
+      compare_tree_edges (TYPE_MAIN_VARIANT (t1), TYPE_MAIN_VARIANT (t2));
+      /* ???  Global types from different TUs have non-matching
+	 TRANSLATION_UNIT_DECLs.  Still merge them if they are otherwise
+	 equal.  */
+      if (TYPE_FILE_SCOPE_P (t1) && TYPE_FILE_SCOPE_P (t2))
+	;
+      else
+	compare_tree_edges (TYPE_CONTEXT (t1), TYPE_CONTEXT (t2));
+      /* TYPE_CANONICAL is re-computed during type merging, so do not
+	 compare it here.  */
+      compare_tree_edges (TYPE_STUB_DECL (t1), TYPE_STUB_DECL (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON))
+    {
+      if (code == ENUMERAL_TYPE)
+	compare_tree_edges (TYPE_VALUES (t1), TYPE_VALUES (t2));
+      else if (code == ARRAY_TYPE)
+	compare_tree_edges (TYPE_DOMAIN (t1), TYPE_DOMAIN (t2));
+      else if (RECORD_OR_UNION_TYPE_P (t1))
+	{
+	  tree f1, f2;
+	  for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2);
+	       f1 || f2;
+	       f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2))
+	    compare_tree_edges (f1, f2);
+	  compare_tree_edges (TYPE_BINFO (t1), TYPE_BINFO (t2));
+	}
+      else if (code == FUNCTION_TYPE
+	       || code == METHOD_TYPE)
+	compare_tree_edges (TYPE_ARG_TYPES (t1), TYPE_ARG_TYPES (t2));
+      if (!POINTER_TYPE_P (t1))
+	compare_tree_edges (TYPE_MINVAL (t1), TYPE_MINVAL (t2));
+      compare_tree_edges (TYPE_MAXVAL (t1), TYPE_MAXVAL (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_LIST))
+    {
+      compare_tree_edges (TREE_PURPOSE (t1), TREE_PURPOSE (t2));
+      compare_tree_edges (TREE_VALUE (t1), TREE_VALUE (t2));
+      compare_tree_edges (TREE_CHAIN (t1), TREE_CHAIN (t2));
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_VEC))
+    for (int i = 0; i < TREE_VEC_LENGTH (t1); i++)
+      compare_tree_edges (TREE_VEC_ELT (t1, i), TREE_VEC_ELT (t2, i));
+
+  if (CODE_CONTAINS_STRUCT (code, TS_EXP))
+    {
+      for (int i = 0; i < TREE_OPERAND_LENGTH (t1); i++)
+	compare_tree_edges (TREE_OPERAND (t1, i),
+			    TREE_OPERAND (t2, i));
+
+      /* BLOCKs are function local and we don't merge anything there.  */
+      if (TREE_BLOCK (t1) || TREE_BLOCK (t2))
+	return false;
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_BINFO))
+    {
+      unsigned i;
+      tree t;
+      /* Lengths have already been compared above.  */
+      FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (t1), i, t)
+	compare_tree_edges (t, BINFO_BASE_BINFO (t2, i));
+      FOR_EACH_VEC_SAFE_ELT (BINFO_BASE_ACCESSES (t1), i, t)
+	compare_tree_edges (t, BINFO_BASE_ACCESS (t2, i));
+      compare_tree_edges (BINFO_OFFSET (t1), BINFO_OFFSET (t2));
+      compare_tree_edges (BINFO_VTABLE (t1), BINFO_VTABLE (t2));
+      compare_tree_edges (BINFO_VPTR_FIELD (t1), BINFO_VPTR_FIELD (t2));
+      /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX
+	 and BINFO_VPTR_INDEX; these are used by C++ FE only.  */
+    }
+
+  if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
+    {
+      unsigned i;
+      tree index, value;
+      /* Lengths have already been compared above.  */
+      FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t1), i, index, value)
+	{
+	  compare_tree_edges (index, CONSTRUCTOR_ELT (t2, i)->index);
+	  compare_tree_edges (value, CONSTRUCTOR_ELT (t2, i)->value);
+	}
+    }
+
+  if (code == OMP_CLAUSE)
+    {
+      int i;
+
+      for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (t1)]; i++)
+	compare_tree_edges (OMP_CLAUSE_OPERAND (t1, i),
+			    OMP_CLAUSE_OPERAND (t2, i));
+      compare_tree_edges (OMP_CLAUSE_CHAIN (t1), OMP_CLAUSE_CHAIN (t2));
+    }
+
+#undef compare_tree_edges
+
+  return true;
+}
+
+/* Compare the tree scc SCC to the prevailing candidate PSCC, filling
+   out MAP if they are equal.  */
+
+static bool
+compare_tree_sccs (tree_scc *pscc, tree_scc *scc,
+		   tree *map)
+{
+  /* Assume SCC entry hashes are sorted after their cardinality.  Which
+     means we can simply take the first n-tuple of equal hashes
+     (which is recorded as entry_len) and do n SCC entry candidate
+     comparisons.  */
+  for (unsigned i = 0; i < pscc->entry_len; ++i)
+    {
+      tree *mapp = map;
+      num_scc_compare_collisions++;
+      if (compare_tree_sccs_1 (pscc->entries[0], scc->entries[i], &mapp))
+	{
+	  /* Equal - no need to reset TREE_VISITED or TREE_ASM_WRITTEN
+	     on the scc as all trees will be freed.  */
+	  return true;
+	}
+      /* Reset TREE_ASM_WRITTEN on scc for the next compare or in case
+         the SCC prevails.  */
+      for (unsigned j = 0; j < scc->len; ++j)
+	TREE_ASM_WRITTEN (scc->entries[j]) = 0;
+    }
+
+  return false;
+}
+
+/* QSort sort function to sort a map of two pointers after the 2nd
+   pointer.  */
+
+static int
+cmp_tree (const void *p1_, const void *p2_)
+{
+  tree *p1 = (tree *)(const_cast<void *>(p1_));
+  tree *p2 = (tree *)(const_cast<void *>(p2_));
+  if (p1[1] == p2[1])
+    return 0;
+  return ((uintptr_t)p1[1] < (uintptr_t)p2[1]) ? -1 : 1;
+}
+
+/* Try to unify the SCC with nodes FROM to FROM + LEN in CACHE and
+   hash value SCC_HASH with an already recorded SCC.  Return true if
+   that was successful, otherwise return false.  */
+
+static bool
+unify_scc (struct streamer_tree_cache_d *cache, unsigned from,
+	   unsigned len, unsigned scc_entry_len, hashval_t scc_hash)
+{
+  bool unified_p = false;
+  tree_scc *scc
+    = (tree_scc *) alloca (sizeof (tree_scc) + (len - 1) * sizeof (tree));
+  scc->next = NULL;
+  scc->hash = scc_hash;
+  scc->len = len;
+  scc->entry_len = scc_entry_len;
+  for (unsigned i = 0; i < len; ++i)
+    {
+      tree t = streamer_tree_cache_get_tree (cache, from + i);
+      scc->entries[i] = t;
+      /* Do not merge SCCs with local entities inside them.  Also do
+	 not merge TRANSLATION_UNIT_DECLs.  */
+      if (TREE_CODE (t) == TRANSLATION_UNIT_DECL
+	  || (VAR_OR_FUNCTION_DECL_P (t)
+	      && !(TREE_PUBLIC (t) || DECL_EXTERNAL (t)))
+	  || TREE_CODE (t) == LABEL_DECL)
+	{
+	  /* Avoid doing any work for these cases and do not worry to
+	     record the SCCs for further merging.  */
+	  return false;
+	}
+    }
+
+  /* Look for the list of candidate SCCs to compare against.  */
+  tree_scc **slot;
+  slot = tree_scc_hash.find_slot_with_hash (scc, scc_hash, INSERT);
+  if (*slot)
+    {
+      /* Try unifying against each candidate.  */
+      num_scc_compares++;
+
+      /* Set TREE_VISITED on the scc so we can easily identify tree nodes
+	 outside of the scc when following tree edges.  Make sure
+	 that TREE_ASM_WRITTEN is unset so we can use it as 2nd bit
+	 to track whether we visited the SCC member during the compare.
+	 We cannot use TREE_VISITED on the pscc members as the extended
+	 scc and pscc can overlap.  */
+      for (unsigned i = 0; i < scc->len; ++i)
+	{
+	  TREE_VISITED (scc->entries[i]) = 1;
+	  gcc_checking_assert (!TREE_ASM_WRITTEN (scc->entries[i]));
+	}
+
+      tree *map = XALLOCAVEC (tree, 2 * len);
+      for (tree_scc *pscc = *slot; pscc; pscc = pscc->next)
+	{
+	  if (!compare_tree_sccs (pscc, scc, map))
+	    continue;
+
+	  /* Found an equal SCC.  */
+	  unified_p = true;
+	  num_scc_compare_collisions--;
+	  num_sccs_merged++;
+	  total_scc_size_merged += len;
+
+#ifdef ENABLE_CHECKING
+	  for (unsigned i = 0; i < len; ++i)
+	    {
+	      tree t = map[2*i+1];
+	      enum tree_code code = TREE_CODE (t);
+	      /* IDENTIFIER_NODEs should be singletons and are merged by the
+		 streamer.  The others should be singletons, too, and we
+		 should not merge them in any way.  */
+	      gcc_assert (code != TRANSLATION_UNIT_DECL
+			  && code != IDENTIFIER_NODE
+			  && !streamer_handle_as_builtin_p (t));
+	    }
+#endif
+
+	  /* Fixup the streamer cache with the prevailing nodes according
+	     to the tree node mapping computed by compare_tree_sccs.  */
+	  if (len == 1)
+	    streamer_tree_cache_replace_tree (cache, pscc->entries[0], from);
+	  else
+	    {
+	      tree *map2 = XALLOCAVEC (tree, 2 * len);
+	      for (unsigned i = 0; i < len; ++i)
+		{
+		  map2[i*2] = (tree)(uintptr_t)(from + i);
+		  map2[i*2+1] = scc->entries[i];
+		}
+	      qsort (map2, len, 2 * sizeof (tree), cmp_tree);
+	      qsort (map, len, 2 * sizeof (tree), cmp_tree);
+	      for (unsigned i = 0; i < len; ++i)
+		streamer_tree_cache_replace_tree (cache, map[2*i],
+						  (uintptr_t)map2[2*i]);
+	    }
+
+	  /* Free the tree nodes from the read SCC.  */
+	  for (unsigned i = 0; i < len; ++i)
+	    {
+	      enum tree_code code;
+	      if (TYPE_P (scc->entries[i]))
+		num_merged_types++;
+	      code = TREE_CODE (scc->entries[i]);
+	      if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
+		vec_free (CONSTRUCTOR_ELTS (scc->entries[i]));
+	      ggc_free (scc->entries[i]);
+	    }
+
+	  break;
+	}
+
+      /* Reset TREE_VISITED if we didn't unify the SCC with another.  */
+      if (!unified_p)
+	for (unsigned i = 0; i < scc->len; ++i)
+	  TREE_VISITED (scc->entries[i]) = 0;
+    }
+
+  /* If we didn't unify it to any candidate duplicate the relevant
+     pieces to permanent storage and link it into the chain.  */
+  if (!unified_p)
+    {
+      tree_scc *pscc
+	= XOBNEWVAR (&tree_scc_hash_obstack, tree_scc, sizeof (tree_scc));
+      memcpy (pscc, scc, sizeof (tree_scc));
+      pscc->next = (*slot);
+      *slot = pscc;
+    }
+  return unified_p;
+}
+
+
+/* Read all the symbols from buffer DATA, using descriptors in DECL_DATA.
+   RESOLUTIONS is the set of symbols picked by the linker (read from the
+   resolution file when the linker plugin is being used).  */
+
+static void
+lto_read_decls (struct lto_file_decl_data *decl_data, const void *data,
+		vec<ld_plugin_symbol_resolution_t> resolutions)
+{
+  const struct lto_decl_header *header = (const struct lto_decl_header *) data;
+  const int decl_offset = sizeof (struct lto_decl_header);
+  const int main_offset = decl_offset + header->decl_state_size;
+  const int string_offset = main_offset + header->main_size;
+  struct lto_input_block ib_main;
+  struct data_in *data_in;
+  unsigned int i;
+  const uint32_t *data_ptr, *data_end;
+  uint32_t num_decl_states;
+
+  LTO_INIT_INPUT_BLOCK (ib_main, (const char *) data + main_offset, 0,
+			header->main_size);
+
+  data_in = lto_data_in_create (decl_data, (const char *) data + string_offset,
+				header->string_size, resolutions);
+
+  /* We do not uniquify the pre-loaded cache entries, those are middle-end
+     internal types that should not be merged.  */
+
+  /* Read the global declarations and types.  */
+  while (ib_main.p < ib_main.len)
+    {
+      tree t;
+      unsigned from = data_in->reader_cache->nodes.length ();
+      /* Read and uniquify SCCs as in the input stream.  */
+      enum LTO_tags tag = streamer_read_record_start (&ib_main);
+      if (tag == LTO_tree_scc)
+	{
+	  unsigned len_;
+	  unsigned scc_entry_len;
+	  hashval_t scc_hash = lto_input_scc (&ib_main, data_in, &len_,
+					      &scc_entry_len);
+	  unsigned len = data_in->reader_cache->nodes.length () - from;
+	  gcc_assert (len == len_);
+
+	  total_scc_size += len;
+	  num_sccs_read++;
+
+	  /* We have the special case of size-1 SCCs that are pre-merged
+	     by means of identifier and string sharing for example.
+	     ???  Maybe we should avoid streaming those as SCCs.  */
+	  tree first = streamer_tree_cache_get_tree (data_in->reader_cache,
+						     from);
+	  if (len == 1
+	      && (TREE_CODE (first) == IDENTIFIER_NODE
+		  || TREE_CODE (first) == INTEGER_CST
+		  || TREE_CODE (first) == TRANSLATION_UNIT_DECL
+		  || streamer_handle_as_builtin_p (first)))
+	    continue;
+
+	  /* Try to unify the SCC with already existing ones.  */
+	  if (!flag_ltrans
+	      && unify_scc (data_in->reader_cache, from,
+			    len, scc_entry_len, scc_hash))
+	    continue;
+
+	  /* Do remaining fixup tasks for prevailing nodes.  */
+	  bool seen_type = false;
+	  for (unsigned i = 0; i < len; ++i)
+	    {
+	      tree t = streamer_tree_cache_get_tree (data_in->reader_cache,
+						     from + i);
+	      /* Reconstruct the type variant and pointer-to/reference-to
+		 chains.  */
+	      if (TYPE_P (t))
+		{
+		  seen_type = true;
+		  num_prevailing_types++;
+		  lto_fixup_prevailing_type (t);
+		}
+	      /* Compute the canonical type of all types.
+		 ???  Should be able to assert that !TYPE_CANONICAL.  */
+	      if (TYPE_P (t) && !TYPE_CANONICAL (t))
+		gimple_register_canonical_type (t);
+	      /* Link shared INTEGER_CSTs into TYPE_CACHED_VALUEs of its
+		 type which is also member of this SCC.  */
+	      if (TREE_CODE (t) == INTEGER_CST
+		  && !TREE_OVERFLOW (t))
+		cache_integer_cst (t);
+	      /* Re-build DECL_FUNCTION_SPECIFIC_TARGET, we need that
+	         for both WPA and LTRANS stage.  */
+	      if (TREE_CODE (t) == FUNCTION_DECL)
+		{
+		  tree attr = lookup_attribute ("target", DECL_ATTRIBUTES (t));
+		  if (attr)
+		    targetm.target_option.valid_attribute_p
+			(t, NULL_TREE, TREE_VALUE (attr), 0);
+		}
+	      /* Register TYPE_DECLs with the debuginfo machinery.  */
+	      if (!flag_wpa
+		  && TREE_CODE (t) == TYPE_DECL)
+		debug_hooks->type_decl (t, !DECL_FILE_SCOPE_P (t));
+	      if (!flag_ltrans)
+		{
+		  /* Register variables and functions with the
+		     symbol table.  */
+		  if (TREE_CODE (t) == VAR_DECL)
+		    lto_register_var_decl_in_symtab (data_in, t, from + i);
+		  else if (TREE_CODE (t) == FUNCTION_DECL
+			   && !DECL_BUILT_IN (t))
+		    lto_register_function_decl_in_symtab (data_in, t, from + i);
+		  /* Scan the tree for references to global functions or
+		     variables and record those for later fixup.  */
+		  if (mentions_vars_p (t))
+		    vec_safe_push (tree_with_vars, t);
+		}
+	    }
+	  if (seen_type)
+	    num_type_scc_trees += len;
+	}
+      else
+	{
+	  /* Pickle stray references.  */
+	  t = lto_input_tree_1 (&ib_main, data_in, tag, 0);
+	  gcc_assert (t && data_in->reader_cache->nodes.length () == from);
+	}
+    }
+
+  /* Read in lto_in_decl_state objects.  */
+  data_ptr = (const uint32_t *) ((const char*) data + decl_offset); 
+  data_end =
+     (const uint32_t *) ((const char*) data_ptr + header->decl_state_size);
+  num_decl_states = *data_ptr++;
+  
+  gcc_assert (num_decl_states > 0);
+  decl_data->global_decl_state = lto_new_in_decl_state ();
+  data_ptr = lto_read_in_decl_state (data_in, data_ptr,
+				     decl_data->global_decl_state);
+
+  /* Read in per-function decl states and enter them in hash table.  */
+  decl_data->function_decl_states =
+    htab_create_ggc (37, lto_hash_in_decl_state, lto_eq_in_decl_state, NULL);
+
+  for (i = 1; i < num_decl_states; i++)
+    {
+      struct lto_in_decl_state *state = lto_new_in_decl_state ();
+      void **slot;
+
+      data_ptr = lto_read_in_decl_state (data_in, data_ptr, state);
+      slot = htab_find_slot (decl_data->function_decl_states, state, INSERT);
+      gcc_assert (*slot == NULL);
+      *slot = state;
+    }
+
+  if (data_ptr != data_end)
+    internal_error ("bytecode stream: garbage at the end of symbols section");
+
+  /* Set the current decl state to be the global state. */
+  decl_data->current_decl_state = decl_data->global_decl_state;
+
+  lto_data_in_delete (data_in);
+}
+
+/* Custom version of strtoll, which is not portable.  */
+
+static HOST_WIDEST_INT
+lto_parse_hex (const char *p)
+{
+  HOST_WIDEST_INT ret = 0;
+
+  for (; *p != '\0'; ++p)
+    {
+      char c = *p;
+      unsigned char part;
+      ret <<= 4;
+      if (c >= '0' && c <= '9')
+        part = c - '0';
+      else if (c >= 'a' && c <= 'f')
+        part = c - 'a' + 10;
+      else if (c >= 'A' && c <= 'F')
+        part = c - 'A' + 10;
+      else
+        internal_error ("could not parse hex number");
+      ret |= part;
+    }
+
+  return ret;
+}
+
+/* Read resolution for file named FILE_NAME. The resolution is read from
+   RESOLUTION. */
+
+static void
+lto_resolution_read (splay_tree file_ids, FILE *resolution, lto_file *file)
+{
+  /* We require that objects in the resolution file are in the same
+     order as the lto1 command line. */
+  unsigned int name_len;
+  char *obj_name;
+  unsigned int num_symbols;
+  unsigned int i;
+  struct lto_file_decl_data *file_data;
+  splay_tree_node nd = NULL; 
+
+  if (!resolution)
+    return;
+
+  name_len = strlen (file->filename);
+  obj_name = XNEWVEC (char, name_len + 1);
+  fscanf (resolution, " ");   /* Read white space. */
+
+  fread (obj_name, sizeof (char), name_len, resolution);
+  obj_name[name_len] = '\0';
+  if (filename_cmp (obj_name, file->filename) != 0)
+    internal_error ("unexpected file name %s in linker resolution file. "
+		    "Expected %s", obj_name, file->filename);
+  if (file->offset != 0)
+    {
+      int t;
+      char offset_p[17];
+      HOST_WIDEST_INT offset;
+      t = fscanf (resolution, "@0x%16s", offset_p);
+      if (t != 1)
+        internal_error ("could not parse file offset");
+      offset = lto_parse_hex (offset_p);
+      if (offset != file->offset)
+        internal_error ("unexpected offset");
+    }
+
+  free (obj_name);
+
+  fscanf (resolution, "%u", &num_symbols);
+
+  for (i = 0; i < num_symbols; i++)
+    {
+      int t;
+      unsigned index;
+      unsigned HOST_WIDE_INT id;
+      char r_str[27];
+      enum ld_plugin_symbol_resolution r = (enum ld_plugin_symbol_resolution) 0;
+      unsigned int j;
+      unsigned int lto_resolution_str_len =
+	sizeof (lto_resolution_str) / sizeof (char *);
+      res_pair rp;
+
+      t = fscanf (resolution, "%u " HOST_WIDE_INT_PRINT_HEX_PURE " %26s %*[^\n]\n", 
+		  &index, &id, r_str);
+      if (t != 3)
+        internal_error ("invalid line in the resolution file");
+
+      for (j = 0; j < lto_resolution_str_len; j++)
+	{
+	  if (strcmp (lto_resolution_str[j], r_str) == 0)
+	    {
+	      r = (enum ld_plugin_symbol_resolution) j;
+	      break;
+	    }
+	}
+      if (j == lto_resolution_str_len)
+	internal_error ("invalid resolution in the resolution file");
+
+      if (!(nd && lto_splay_tree_id_equal_p (nd->key, id)))
+	{
+	  nd = lto_splay_tree_lookup (file_ids, id);
+	  if (nd == NULL)
+	    internal_error ("resolution sub id %wx not in object file", id);
+	}
+
+      file_data = (struct lto_file_decl_data *)nd->value;
+      /* The indexes are very sparse. To save memory save them in a compact
+         format that is only unpacked later when the subfile is processed. */
+      rp.res = r;
+      rp.index = index;
+      file_data->respairs.safe_push (rp);
+      if (file_data->max_index < index)
+        file_data->max_index = index;
+    }
+}
+
+/* List of file_decl_datas */
+struct file_data_list
+  {
+    struct lto_file_decl_data *first, *last;
+  };
+
+/* Is the name for a id'ed LTO section? */
+
+static int 
+lto_section_with_id (const char *name, unsigned HOST_WIDE_INT *id)
+{
+  const char *s;
+
+  if (strncmp (name, LTO_SECTION_NAME_PREFIX, strlen (LTO_SECTION_NAME_PREFIX)))
+    return 0;
+  s = strrchr (name, '.');
+  return s && sscanf (s, "." HOST_WIDE_INT_PRINT_HEX_PURE, id) == 1;
+}
+
+/* Create file_data of each sub file id */
+
+static int 
+create_subid_section_table (struct lto_section_slot *ls, splay_tree file_ids,
+                            struct file_data_list *list)
+{
+  struct lto_section_slot s_slot, *new_slot;
+  unsigned HOST_WIDE_INT id;
+  splay_tree_node nd;
+  void **hash_slot;
+  char *new_name;
+  struct lto_file_decl_data *file_data;
+
+  if (!lto_section_with_id (ls->name, &id))
+    return 1;
+  
+  /* Find hash table of sub module id */
+  nd = lto_splay_tree_lookup (file_ids, id);
+  if (nd != NULL)
+    {
+      file_data = (struct lto_file_decl_data *)nd->value;
+    }
+  else
+    {
+      file_data = ggc_alloc_lto_file_decl_data ();
+      memset(file_data, 0, sizeof (struct lto_file_decl_data));
+      file_data->id = id;
+      file_data->section_hash_table = lto_obj_create_section_hash_table ();;
+      lto_splay_tree_insert (file_ids, id, file_data);
+
+      /* Maintain list in linker order */
+      if (!list->first)
+        list->first = file_data;
+      if (list->last)
+        list->last->next = file_data;
+      list->last = file_data;
+    }
+
+  /* Copy section into sub module hash table */
+  new_name = XDUPVEC (char, ls->name, strlen (ls->name) + 1);
+  s_slot.name = new_name;
+  hash_slot = htab_find_slot (file_data->section_hash_table, &s_slot, INSERT);
+  gcc_assert (*hash_slot == NULL);
+
+  new_slot = XDUP (struct lto_section_slot, ls);
+  new_slot->name = new_name;
+  *hash_slot = new_slot;
+  return 1;
+}
+
+/* Read declarations and other initializations for a FILE_DATA. */
+
+static void
+lto_file_finalize (struct lto_file_decl_data *file_data, lto_file *file)
+{
+  const char *data;
+  size_t len;
+  vec<ld_plugin_symbol_resolution_t>
+	resolutions = vNULL;
+  int i;
+  res_pair *rp;
+
+  /* Create vector for fast access of resolution. We do this lazily
+     to save memory. */ 
+  resolutions.safe_grow_cleared (file_data->max_index + 1);
+  for (i = 0; file_data->respairs.iterate (i, &rp); i++)
+    resolutions[rp->index] = rp->res;
+  file_data->respairs.release ();
+
+  file_data->renaming_hash_table = lto_create_renaming_table ();
+  file_data->file_name = file->filename;
+  data = lto_get_section_data (file_data, LTO_section_decls, NULL, &len);
+  if (data == NULL)
+    {
+      internal_error ("cannot read LTO decls from %s", file_data->file_name);
+      return;
+    }
+  /* Frees resolutions */
+  lto_read_decls (file_data, data, resolutions);
+  lto_free_section_data (file_data, LTO_section_decls, NULL, data, len);
+}
+
+/* Finalize FILE_DATA in FILE and increase COUNT. */
+
+static int 
+lto_create_files_from_ids (lto_file *file, struct lto_file_decl_data *file_data,
+			   int *count)
+{
+  lto_file_finalize (file_data, file);
+  if (cgraph_dump_file)
+    fprintf (cgraph_dump_file, "Creating file %s with sub id " HOST_WIDE_INT_PRINT_HEX "\n", 
+	     file_data->file_name, file_data->id);
+  (*count)++;
+  return 0;
+}
+
+/* Generate a TREE representation for all types and external decls
+   entities in FILE.  
+
+   Read all of the globals out of the file.  Then read the cgraph
+   and process the .o index into the cgraph nodes so that it can open
+   the .o file to load the functions and ipa information.   */
+
+static struct lto_file_decl_data *
+lto_file_read (lto_file *file, FILE *resolution_file, int *count)
+{
+  struct lto_file_decl_data *file_data = NULL;
+  splay_tree file_ids;
+  htab_t section_hash_table;
+  struct lto_section_slot *section;
+  struct file_data_list file_list;
+  struct lto_section_list section_list;
+ 
+  memset (&section_list, 0, sizeof (struct lto_section_list)); 
+  section_hash_table = lto_obj_build_section_table (file, &section_list);
+
+  /* Find all sub modules in the object and put their sections into new hash
+     tables in a splay tree. */
+  file_ids = lto_splay_tree_new ();
+  memset (&file_list, 0, sizeof (struct file_data_list));
+  for (section = section_list.first; section != NULL; section = section->next)
+    create_subid_section_table (section, file_ids, &file_list);
+
+  /* Add resolutions to file ids */
+  lto_resolution_read (file_ids, resolution_file, file);
+
+  /* Finalize each lto file for each submodule in the merged object */
+  for (file_data = file_list.first; file_data != NULL; file_data = file_data->next)
+    lto_create_files_from_ids (file, file_data, count);
+ 
+  splay_tree_delete (file_ids);
+  htab_delete (section_hash_table);
+
+  return file_list.first;
+}
+
+#if HAVE_MMAP_FILE && HAVE_SYSCONF && defined _SC_PAGE_SIZE
+#define LTO_MMAP_IO 1
+#endif
+
+#if LTO_MMAP_IO
+/* Page size of machine is used for mmap and munmap calls.  */
+static size_t page_mask;
+#endif
+
+/* Get the section data of length LEN from FILENAME starting at
+   OFFSET.  The data segment must be freed by the caller when the
+   caller is finished.  Returns NULL if all was not well.  */
+
+static char *
+lto_read_section_data (struct lto_file_decl_data *file_data,
+		       intptr_t offset, size_t len)
+{
+  char *result;
+  static int fd = -1;
+  static char *fd_name;
+#if LTO_MMAP_IO
+  intptr_t computed_len;
+  intptr_t computed_offset;
+  intptr_t diff;
+#endif
+
+  /* Keep a single-entry file-descriptor cache.  The last file we
+     touched will get closed at exit.
+     ???  Eventually we want to add a more sophisticated larger cache
+     or rather fix function body streaming to not stream them in
+     practically random order.  */
+  if (fd != -1
+      && filename_cmp (fd_name, file_data->file_name) != 0)
+    {
+      free (fd_name);
+      close (fd);
+      fd = -1;
+    }
+  if (fd == -1)
+    {
+      fd = open (file_data->file_name, O_RDONLY|O_BINARY);
+      if (fd == -1)
+        {
+	  fatal_error ("Cannot open %s", file_data->file_name);
+	  return NULL;
+        }
+      fd_name = xstrdup (file_data->file_name);
+    }
+
+#if LTO_MMAP_IO
+  if (!page_mask)
+    {
+      size_t page_size = sysconf (_SC_PAGE_SIZE);
+      page_mask = ~(page_size - 1);
+    }
+
+  computed_offset = offset & page_mask;
+  diff = offset - computed_offset;
+  computed_len = len + diff;
+
+  result = (char *) mmap (NULL, computed_len, PROT_READ, MAP_PRIVATE,
+			  fd, computed_offset);
+  if (result == MAP_FAILED)
+    {
+      fatal_error ("Cannot map %s", file_data->file_name);
+      return NULL;
+    }
+
+  return result + diff;
+#else
+  result = (char *) xmalloc (len);
+  if (lseek (fd, offset, SEEK_SET) != offset
+      || read (fd, result, len) != (ssize_t) len)
+    {
+      free (result);
+      fatal_error ("Cannot read %s", file_data->file_name);
+      result = NULL;
+    }
+#ifdef __MINGW32__
+  /* Native windows doesn't supports delayed unlink on opened file. So
+     we close file here again. This produces higher I/O load, but at least
+     it prevents to have dangling file handles preventing unlink.  */
+  free (fd_name);
+  fd_name = NULL;
+  close (fd);
+  fd = -1;
+#endif
+  return result;
+#endif
+}    
+
+
+/* Get the section data from FILE_DATA of SECTION_TYPE with NAME.
+   NAME will be NULL unless the section type is for a function
+   body.  */
+
+static const char *
+get_section_data (struct lto_file_decl_data *file_data,
+		      enum lto_section_type section_type,
+		      const char *name,
+		      size_t *len)
+{
+  htab_t section_hash_table = file_data->section_hash_table;
+  struct lto_section_slot *f_slot;
+  struct lto_section_slot s_slot;
+  const char *section_name = lto_get_section_name (section_type, name, file_data);
+  char *data = NULL;
+
+  *len = 0;
+  s_slot.name = section_name;
+  f_slot = (struct lto_section_slot *) htab_find (section_hash_table, &s_slot);
+  if (f_slot)
+    {
+      data = lto_read_section_data (file_data, f_slot->start, f_slot->len);
+      *len = f_slot->len;
+    }
+
+  free (CONST_CAST (char *, section_name));
+  return data;
+}
+
+
+/* Free the section data from FILE_DATA of SECTION_TYPE with NAME that
+   starts at OFFSET and has LEN bytes.  */
+
+static void
+free_section_data (struct lto_file_decl_data *file_data ATTRIBUTE_UNUSED,
+		   enum lto_section_type section_type ATTRIBUTE_UNUSED,
+		   const char *name ATTRIBUTE_UNUSED,
+		   const char *offset, size_t len ATTRIBUTE_UNUSED)
+{
+#if LTO_MMAP_IO
+  intptr_t computed_len;
+  intptr_t computed_offset;
+  intptr_t diff;
+#endif
+
+#if LTO_MMAP_IO
+  computed_offset = ((intptr_t) offset) & page_mask;
+  diff = (intptr_t) offset - computed_offset;
+  computed_len = len + diff;
+
+  munmap ((caddr_t) computed_offset, computed_len);
+#else
+  free (CONST_CAST(char *, offset));
+#endif
+}
+
+static lto_file *current_lto_file;
+
+/* Helper for qsort; compare partitions and return one with smaller size.
+   We sort from greatest to smallest so parallel build doesn't stale on the
+   longest compilation being executed too late.  */
+
+static int
+cmp_partitions_size (const void *a, const void *b)
+{
+  const struct ltrans_partition_def *pa
+     = *(struct ltrans_partition_def *const *)a;
+  const struct ltrans_partition_def *pb
+     = *(struct ltrans_partition_def *const *)b;
+  return pb->insns - pa->insns;
+}
+
+/* Helper for qsort; compare partitions and return one with smaller order.  */
+
+static int
+cmp_partitions_order (const void *a, const void *b)
+{
+  const struct ltrans_partition_def *pa
+     = *(struct ltrans_partition_def *const *)a;
+  const struct ltrans_partition_def *pb
+     = *(struct ltrans_partition_def *const *)b;
+  int ordera = -1, orderb = -1;
+
+  if (lto_symtab_encoder_size (pa->encoder))
+    ordera = lto_symtab_encoder_deref (pa->encoder, 0)->order;
+  if (lto_symtab_encoder_size (pb->encoder))
+    orderb = lto_symtab_encoder_deref (pb->encoder, 0)->order;
+  return orderb - ordera;
+}
+
+/* Actually stream out ENCODER into TEMP_FILENAME.  */
+
+static void
+do_stream_out (char *temp_filename, lto_symtab_encoder_t encoder)
+{
+  lto_file *file = lto_obj_file_open (temp_filename, true);
+  if (!file)
+    fatal_error ("lto_obj_file_open() failed");
+  lto_set_current_out_file (file);
+
+  ipa_write_optimization_summaries (encoder);
+
+  lto_set_current_out_file (NULL);
+  lto_obj_file_close (file);
+  free (file);
+}
+
+/* Wait for forked process and signal errors.  */
+#ifdef HAVE_WORKING_FORK
+static void
+wait_for_child ()
+{
+  int status;
+  do
+    {
+#ifndef WCONTINUED
+#define WCONTINUED 0
+#endif
+      int w = waitpid (0, &status, WUNTRACED | WCONTINUED);
+      if (w == -1)
+	fatal_error ("waitpid failed");
+
+      if (WIFEXITED (status) && WEXITSTATUS (status))
+	fatal_error ("streaming subprocess failed");
+      else if (WIFSIGNALED (status))
+	fatal_error ("streaming subprocess was killed by signal");
+    }
+  while (!WIFEXITED (status) && !WIFSIGNALED (status));
+}
+#endif
+
+/* Stream out ENCODER into TEMP_FILENAME
+   Fork if that seems to help.  */
+
+static void
+stream_out (char *temp_filename, lto_symtab_encoder_t encoder, bool last)
+{
+#ifdef HAVE_WORKING_FORK
+  static int nruns;
+
+  if (lto_parallelism <= 1)
+    {
+      do_stream_out (temp_filename, encoder);
+      return;
+    }
+
+  /* Do not run more than LTO_PARALLELISM streamings
+     FIXME: we ignore limits on jobserver.  */
+  if (lto_parallelism > 0 && nruns >= lto_parallelism)
+    {
+      wait_for_child ();
+      nruns --;
+    }
+  /* If this is not the last parallel partition, execute new
+     streaming process.  */
+  if (!last)
+    {
+      pid_t cpid = fork ();
+
+      if (!cpid)
+	{
+	  setproctitle ("lto1-wpa-streaming");
+	  do_stream_out (temp_filename, encoder);
+	  exit (0);
+	}
+      /* Fork failed; lets do the job ourseleves.  */
+      else if (cpid == -1)
+        do_stream_out (temp_filename, encoder);
+      else
+	nruns++;
+    }
+  /* Last partition; stream it and wait for all children to die.  */
+  else
+    {
+      int i;
+      do_stream_out (temp_filename, encoder);
+      for (i = 0; i < nruns; i++)
+	wait_for_child ();
+    }
+  asm_nodes_output = true;
+#else
+  do_stream_out (temp_filename, encoder);
+#endif
+}
+
+/* Write all output files in WPA mode and the file with the list of
+   LTRANS units.  */
+
+static void
+lto_wpa_write_files (void)
+{
+  unsigned i, n_sets;
+  ltrans_partition part;
+  FILE *ltrans_output_list_stream;
+  char *temp_filename;
+  vec <char *>temp_filenames = vNULL;
+  size_t blen;
+
+  /* Open the LTRANS output list.  */
+  if (!ltrans_output_list)
+    fatal_error ("no LTRANS output list filename provided");
+
+  timevar_push (TV_WHOPR_WPA);
+
+  FOR_EACH_VEC_ELT (ltrans_partitions, i, part)
+    lto_stats.num_output_symtab_nodes += lto_symtab_encoder_size (part->encoder);
+
+  timevar_pop (TV_WHOPR_WPA);
+
+  timevar_push (TV_WHOPR_WPA_IO);
+
+  /* Generate a prefix for the LTRANS unit files.  */
+  blen = strlen (ltrans_output_list);
+  temp_filename = (char *) xmalloc (blen + sizeof ("2147483648.o"));
+  strcpy (temp_filename, ltrans_output_list);
+  if (blen > sizeof (".out")
+      && strcmp (temp_filename + blen - sizeof (".out") + 1,
+		 ".out") == 0)
+    temp_filename[blen - sizeof (".out") + 1] = '\0';
+  blen = strlen (temp_filename);
+
+  n_sets = ltrans_partitions.length ();
+
+  /* Sort partitions by size so small ones are compiled last.
+     FIXME: Even when not reordering we may want to output one list for parallel make
+     and other for final link command.  */
+
+  if (!flag_profile_reorder_functions || !flag_profile_use)
+    ltrans_partitions.qsort (flag_toplevel_reorder
+			   ? cmp_partitions_size
+			   : cmp_partitions_order);
+
+  for (i = 0; i < n_sets; i++)
+    {
+      ltrans_partition part = ltrans_partitions[i];
+
+      /* Write all the nodes in SET.  */
+      sprintf (temp_filename + blen, "%u.o", i);
+
+      if (!quiet_flag)
+	fprintf (stderr, " %s (%s %i insns)", temp_filename, part->name, part->insns);
+      if (cgraph_dump_file)
+	{
+          lto_symtab_encoder_iterator lsei;
+	  
+	  fprintf (cgraph_dump_file, "Writing partition %s to file %s, %i insns\n",
+		   part->name, temp_filename, part->insns);
+	  fprintf (cgraph_dump_file, "  Symbols in partition: ");
+	  for (lsei = lsei_start_in_partition (part->encoder); !lsei_end_p (lsei);
+	       lsei_next_in_partition (&lsei))
+	    {
+	      symtab_node *node = lsei_node (lsei);
+	      fprintf (cgraph_dump_file, "%s ", node->asm_name ());
+	    }
+	  fprintf (cgraph_dump_file, "\n  Symbols in boundary: ");
+	  for (lsei = lsei_start (part->encoder); !lsei_end_p (lsei);
+	       lsei_next (&lsei))
+	    {
+	      symtab_node *node = lsei_node (lsei);
+	      if (!lto_symtab_encoder_in_partition_p (part->encoder, node))
+		{
+	          fprintf (cgraph_dump_file, "%s ", node->asm_name ());
+		  cgraph_node *cnode = dyn_cast <cgraph_node> (node);
+		  if (cnode
+		      && lto_symtab_encoder_encode_body_p (part->encoder, cnode))
+		    fprintf (cgraph_dump_file, "(body included)");
+		  else
+		    {
+		      varpool_node *vnode = dyn_cast <varpool_node> (node);
+		      if (vnode
+			  && lto_symtab_encoder_encode_initializer_p (part->encoder, vnode))
+			fprintf (cgraph_dump_file, "(initializer included)");
+		    }
+		}
+	    }
+	  fprintf (cgraph_dump_file, "\n");
+	}
+      gcc_checking_assert (lto_symtab_encoder_size (part->encoder) || !i);
+
+      stream_out (temp_filename, part->encoder, i == n_sets - 1);
+
+      part->encoder = NULL;
+
+      temp_filenames.safe_push (xstrdup (temp_filename));
+    }
+  ltrans_output_list_stream = fopen (ltrans_output_list, "w");
+  if (ltrans_output_list_stream == NULL)
+    fatal_error ("opening LTRANS output list %s: %m", ltrans_output_list);
+  for (i = 0; i < n_sets; i++)
+    {
+      unsigned int len = strlen (temp_filenames[i]);
+      if (fwrite (temp_filenames[i], 1, len, ltrans_output_list_stream) < len
+	  || fwrite ("\n", 1, 1, ltrans_output_list_stream) < 1)
+	fatal_error ("writing to LTRANS output list %s: %m",
+		     ltrans_output_list);
+     free (temp_filenames[i]);
+    }
+  temp_filenames.release();
+
+  lto_stats.num_output_files += n_sets;
+
+  /* Close the LTRANS output list.  */
+  if (fclose (ltrans_output_list_stream))
+    fatal_error ("closing LTRANS output list %s: %m", ltrans_output_list);
+
+  free_ltrans_partitions();
+  free (temp_filename);
+
+  timevar_pop (TV_WHOPR_WPA_IO);
+}
+
+
+/* If TT is a variable or function decl replace it with its
+   prevailing variant.  */
+#define LTO_SET_PREVAIL(tt) \
+  do {\
+    if ((tt) && VAR_OR_FUNCTION_DECL_P (tt) \
+	&& (TREE_PUBLIC (tt) || DECL_EXTERNAL (tt))) \
+      { \
+        tt = lto_symtab_prevailing_decl (tt); \
+	fixed = true; \
+      } \
+  } while (0)
+
+/* Ensure that TT isn't a replacable var of function decl.  */
+#define LTO_NO_PREVAIL(tt) \
+  gcc_assert (!(tt) || !VAR_OR_FUNCTION_DECL_P (tt))
+
+/* Given a tree T replace all fields referring to variables or functions
+   with their prevailing variant.  */
+static void
+lto_fixup_prevailing_decls (tree t)
+{
+  enum tree_code code = TREE_CODE (t);
+  bool fixed = false;
+
+  gcc_checking_assert (code != TREE_BINFO);
+  LTO_NO_PREVAIL (TREE_TYPE (t));
+  if (CODE_CONTAINS_STRUCT (code, TS_COMMON))
+    LTO_NO_PREVAIL (TREE_CHAIN (t));
+  if (DECL_P (t))
+    {
+      LTO_NO_PREVAIL (DECL_NAME (t));
+      LTO_SET_PREVAIL (DECL_CONTEXT (t));
+      if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
+	{
+	  LTO_SET_PREVAIL (DECL_SIZE (t));
+	  LTO_SET_PREVAIL (DECL_SIZE_UNIT (t));
+	  LTO_SET_PREVAIL (DECL_INITIAL (t));
+	  LTO_NO_PREVAIL (DECL_ATTRIBUTES (t));
+	  LTO_SET_PREVAIL (DECL_ABSTRACT_ORIGIN (t));
+	}
+      if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
+	{
+	  LTO_NO_PREVAIL (t->decl_with_vis.assembler_name);
+	  LTO_NO_PREVAIL (DECL_SECTION_NAME (t));
+	}
+      if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON))
+	{
+	  LTO_NO_PREVAIL (DECL_ARGUMENT_FLD (t));
+	  LTO_NO_PREVAIL (DECL_RESULT_FLD (t));
+	  LTO_NO_PREVAIL (DECL_VINDEX (t));
+	}
+      if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL))
+	LTO_SET_PREVAIL (DECL_FUNCTION_PERSONALITY (t));
+      if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL))
+	{
+	  LTO_SET_PREVAIL (DECL_FIELD_OFFSET (t));
+	  LTO_NO_PREVAIL (DECL_BIT_FIELD_TYPE (t));
+	  LTO_NO_PREVAIL (DECL_QUALIFIER (t));
+	  LTO_NO_PREVAIL (DECL_FIELD_BIT_OFFSET (t));
+	  LTO_NO_PREVAIL (DECL_FCONTEXT (t));
+	}
+    }
+  else if (TYPE_P (t))
+    {
+      LTO_NO_PREVAIL (TYPE_CACHED_VALUES (t));
+      LTO_SET_PREVAIL (TYPE_SIZE (t));
+      LTO_SET_PREVAIL (TYPE_SIZE_UNIT (t));
+      LTO_NO_PREVAIL (TYPE_ATTRIBUTES (t));
+      LTO_NO_PREVAIL (TYPE_NAME (t));
+
+      LTO_SET_PREVAIL (TYPE_MINVAL (t));
+      LTO_SET_PREVAIL (TYPE_MAXVAL (t));
+      LTO_NO_PREVAIL (t->type_non_common.binfo);
+
+      LTO_SET_PREVAIL (TYPE_CONTEXT (t));
+
+      LTO_NO_PREVAIL (TYPE_CANONICAL (t));
+      LTO_NO_PREVAIL (TYPE_MAIN_VARIANT (t));
+      LTO_NO_PREVAIL (TYPE_NEXT_VARIANT (t));
+    }
+  else if (EXPR_P (t))
+    {
+      int i;
+      for (i = TREE_OPERAND_LENGTH (t) - 1; i >= 0; --i)
+	LTO_SET_PREVAIL (TREE_OPERAND (t, i));
+    }
+  else if (TREE_CODE (t) == CONSTRUCTOR)
+    {
+      unsigned i;
+      tree val;
+      FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (t), i, val)
+	LTO_SET_PREVAIL (val);
+    }
+  else
+    {
+      switch (code)
+	{
+	case TREE_LIST:
+	  LTO_SET_PREVAIL (TREE_VALUE (t));
+	  LTO_SET_PREVAIL (TREE_PURPOSE (t));
+	  LTO_NO_PREVAIL (TREE_PURPOSE (t));
+	  break;
+	default:
+	  gcc_unreachable ();
+	}
+    }
+  /* If we fixed nothing, then we missed something seen by
+     mentions_vars_p.  */
+  gcc_checking_assert (fixed);
+}
+#undef LTO_SET_PREVAIL
+#undef LTO_NO_PREVAIL
+
+/* Helper function of lto_fixup_decls. Walks the var and fn streams in STATE,
+   replaces var and function decls with the corresponding prevailing def.  */
+
+static void
+lto_fixup_state (struct lto_in_decl_state *state)
+{
+  unsigned i, si;
+  struct lto_tree_ref_table *table;
+
+  /* Although we only want to replace FUNCTION_DECLs and VAR_DECLs,
+     we still need to walk from all DECLs to find the reachable
+     FUNCTION_DECLs and VAR_DECLs.  */
+  for (si = 0; si < LTO_N_DECL_STREAMS; si++)
+    {
+      table = &state->streams[si];
+      for (i = 0; i < table->size; i++)
+	{
+	  tree *tp = table->trees + i;
+	  if (VAR_OR_FUNCTION_DECL_P (*tp)
+	      && (TREE_PUBLIC (*tp) || DECL_EXTERNAL (*tp)))
+	    *tp = lto_symtab_prevailing_decl (*tp);
+	}
+    }
+}
+
+/* A callback of htab_traverse. Just extracts a state from SLOT
+   and calls lto_fixup_state. */
+
+static int
+lto_fixup_state_aux (void **slot, void *aux ATTRIBUTE_UNUSED)
+{
+  struct lto_in_decl_state *state = (struct lto_in_decl_state *) *slot;
+  lto_fixup_state (state);
+  return 1;
+}
+
+/* Fix the decls from all FILES. Replaces each decl with the corresponding
+   prevailing one.  */
+
+static void
+lto_fixup_decls (struct lto_file_decl_data **files)
+{
+  unsigned int i;
+  tree t;
+
+  if (tree_with_vars)
+    FOR_EACH_VEC_ELT ((*tree_with_vars), i, t)
+      lto_fixup_prevailing_decls (t);
+
+  for (i = 0; files[i]; i++)
+    {
+      struct lto_file_decl_data *file = files[i];
+      struct lto_in_decl_state *state = file->global_decl_state;
+      lto_fixup_state (state);
+
+      htab_traverse (file->function_decl_states, lto_fixup_state_aux, NULL);
+    }
+}
+
+static GTY((length ("lto_stats.num_input_files + 1"))) struct lto_file_decl_data **all_file_decl_data;
+
+/* Turn file datas for sub files into a single array, so that they look
+   like separate files for further passes. */
+
+static void
+lto_flatten_files (struct lto_file_decl_data **orig, int count, int last_file_ix)
+{
+  struct lto_file_decl_data *n, *next;
+  int i, k;
+
+  lto_stats.num_input_files = count;
+  all_file_decl_data
+    = ggc_alloc_cleared_vec_lto_file_decl_data_ptr (count + 1);
+  /* Set the hooks so that all of the ipa passes can read in their data.  */
+  lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data);
+  for (i = 0, k = 0; i < last_file_ix; i++) 
+    {
+      for (n = orig[i]; n != NULL; n = next)
+	{
+	  all_file_decl_data[k++] = n;
+	  next = n->next;
+	  n->next = NULL;
+	}
+    }
+  all_file_decl_data[k] = NULL;
+  gcc_assert (k == count);
+}
+
+/* Input file data before flattening (i.e. splitting them to subfiles to support
+   incremental linking.  */
+static int real_file_count;
+static GTY((length ("real_file_count + 1"))) struct lto_file_decl_data **real_file_decl_data;
+
+static void print_lto_report_1 (void);
+
+/* Read all the symbols from the input files FNAMES.  NFILES is the
+   number of files requested in the command line.  Instantiate a
+   global call graph by aggregating all the sub-graphs found in each
+   file.  */
+
+static void
+read_cgraph_and_symbols (unsigned nfiles, const char **fnames)
+{
+  unsigned int i, last_file_ix;
+  FILE *resolution;
+  int count = 0;
+  struct lto_file_decl_data **decl_data;
+  void **res;
+  symtab_node *snode;
+
+  init_cgraph ();
+
+  timevar_push (TV_IPA_LTO_DECL_IN);
+
+  real_file_decl_data
+    = decl_data = ggc_alloc_cleared_vec_lto_file_decl_data_ptr (nfiles + 1);
+  real_file_count = nfiles;
+
+  /* Read the resolution file.  */
+  resolution = NULL;
+  if (resolution_file_name)
+    {
+      int t;
+      unsigned num_objects;
+
+      resolution = fopen (resolution_file_name, "r");
+      if (resolution == NULL)
+	fatal_error ("could not open symbol resolution file: %m");
+
+      t = fscanf (resolution, "%u", &num_objects);
+      gcc_assert (t == 1);
+
+      /* True, since the plugin splits the archives.  */
+      gcc_assert (num_objects == nfiles);
+    }
+  cgraph_state = CGRAPH_LTO_STREAMING;
+
+  canonical_type_hash_cache = new pointer_map <hashval_t>;
+  gimple_canonical_types = htab_create_ggc (16381, gimple_canonical_type_hash,
+					    gimple_canonical_type_eq, 0);
+  gcc_obstack_init (&tree_scc_hash_obstack);
+  tree_scc_hash.create (4096);
+
+  /* Register the common node types with the canonical type machinery so
+     we properly share alias-sets across languages and TUs.  Do not
+     expose the common nodes as type merge target - those that should be
+     are already exposed so by pre-loading the LTO streamer caches.
+     Do two passes - first clear TYPE_CANONICAL and then re-compute it.  */
+  for (i = 0; i < itk_none; ++i)
+    lto_register_canonical_types (integer_types[i], true);
+  for (i = 0; i < stk_type_kind_last; ++i)
+    lto_register_canonical_types (sizetype_tab[i], true);
+  for (i = 0; i < TI_MAX; ++i)
+    lto_register_canonical_types (global_trees[i], true);
+  for (i = 0; i < itk_none; ++i)
+    lto_register_canonical_types (integer_types[i], false);
+  for (i = 0; i < stk_type_kind_last; ++i)
+    lto_register_canonical_types (sizetype_tab[i], false);
+  for (i = 0; i < TI_MAX; ++i)
+    lto_register_canonical_types (global_trees[i], false);
+
+  if (!quiet_flag)
+    fprintf (stderr, "Reading object files:");
+
+  /* Read all of the object files specified on the command line.  */
+  for (i = 0, last_file_ix = 0; i < nfiles; ++i)
+    {
+      struct lto_file_decl_data *file_data = NULL;
+      if (!quiet_flag)
+	{
+	  fprintf (stderr, " %s", fnames[i]);
+	  fflush (stderr);
+	}
+
+      current_lto_file = lto_obj_file_open (fnames[i], false);
+      if (!current_lto_file)
+	break;
+
+      file_data = lto_file_read (current_lto_file, resolution, &count);
+      if (!file_data)
+	{
+	  lto_obj_file_close (current_lto_file);
+	  free (current_lto_file);
+	  current_lto_file = NULL;
+	  break;
+	}
+
+      decl_data[last_file_ix++] = file_data;
+
+      lto_obj_file_close (current_lto_file);
+      free (current_lto_file);
+      current_lto_file = NULL;
+    }
+
+  lto_flatten_files (decl_data, count, last_file_ix);
+  lto_stats.num_input_files = count;
+  ggc_free(decl_data);
+  real_file_decl_data = NULL;
+
+  if (resolution_file_name)
+    fclose (resolution);
+
+  /* Show the LTO report before launching LTRANS.  */
+  if (flag_lto_report || (flag_wpa && flag_lto_report_wpa))
+    print_lto_report_1 ();
+
+  /* Free gimple type merging datastructures.  */
+  tree_scc_hash.dispose ();
+  obstack_free (&tree_scc_hash_obstack, NULL);
+  htab_delete (gimple_canonical_types);
+  gimple_canonical_types = NULL;
+  delete canonical_type_hash_cache;
+  canonical_type_hash_cache = NULL;
+  ggc_collect ();
+
+  /* Set the hooks so that all of the ipa passes can read in their data.  */
+  lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data);
+
+  timevar_pop (TV_IPA_LTO_DECL_IN);
+
+  if (!quiet_flag)
+    fprintf (stderr, "\nReading the callgraph\n");
+
+  timevar_push (TV_IPA_LTO_CGRAPH_IO);
+  /* Read the symtab.  */
+  input_symtab ();
+
+  /* Store resolutions into the symbol table.  */
+
+  FOR_EACH_SYMBOL (snode)
+    if (symtab_real_symbol_p (snode)
+	&& snode->lto_file_data
+	&& snode->lto_file_data->resolution_map
+	&& (res = pointer_map_contains (snode->lto_file_data->resolution_map,
+					snode->decl)))
+      snode->resolution
+	= (enum ld_plugin_symbol_resolution)(size_t)*res;
+  for (i = 0; all_file_decl_data[i]; i++)
+    if (all_file_decl_data[i]->resolution_map)
+      {
+        pointer_map_destroy (all_file_decl_data[i]->resolution_map);
+        all_file_decl_data[i]->resolution_map = NULL;
+      }
+  
+  timevar_pop (TV_IPA_LTO_CGRAPH_IO);
+
+  if (!quiet_flag)
+    fprintf (stderr, "Merging declarations\n");
+
+  timevar_push (TV_IPA_LTO_DECL_MERGE);
+  /* Merge global decls.  In ltrans mode we read merged cgraph, we do not
+     need to care about resolving symbols again, we only need to replace
+     duplicated declarations read from the callgraph and from function
+     sections.  */
+  if (!flag_ltrans)
+    {
+      lto_symtab_merge_decls ();
+
+      /* If there were errors during symbol merging bail out, we have no
+	 good way to recover here.  */
+      if (seen_error ())
+	fatal_error ("errors during merging of translation units");
+
+      /* Fixup all decls.  */
+      lto_fixup_decls (all_file_decl_data);
+    }
+  if (tree_with_vars)
+    ggc_free (tree_with_vars);
+  tree_with_vars = NULL;
+  ggc_collect ();
+
+  timevar_pop (TV_IPA_LTO_DECL_MERGE);
+  /* Each pass will set the appropriate timer.  */
+
+  if (!quiet_flag)
+    fprintf (stderr, "Reading summaries\n");
+
+  /* Read the IPA summary data.  */
+  if (flag_ltrans)
+    ipa_read_optimization_summaries ();
+  else
+    ipa_read_summaries ();
+
+  for (i = 0; all_file_decl_data[i]; i++)
+    {
+      gcc_assert (all_file_decl_data[i]->symtab_node_encoder);
+      lto_symtab_encoder_delete (all_file_decl_data[i]->symtab_node_encoder);
+      all_file_decl_data[i]->symtab_node_encoder = NULL;
+      lto_free_function_in_decl_state (all_file_decl_data[i]->global_decl_state);
+      all_file_decl_data[i]->global_decl_state = NULL;
+      all_file_decl_data[i]->current_decl_state = NULL; 
+    }
+
+  /* Finally merge the cgraph according to the decl merging decisions.  */
+  timevar_push (TV_IPA_LTO_CGRAPH_MERGE);
+  if (cgraph_dump_file)
+    {
+      fprintf (cgraph_dump_file, "Before merging:\n");
+      dump_symtab (cgraph_dump_file);
+    }
+  lto_symtab_merge_symbols ();
+  ggc_collect ();
+  cgraph_state = CGRAPH_STATE_IPA_SSA;
+
+  timevar_pop (TV_IPA_LTO_CGRAPH_MERGE);
+
+  timevar_push (TV_IPA_LTO_DECL_INIT_IO);
+
+  /* Indicate that the cgraph is built and ready.  */
+  cgraph_function_flags_ready = true;
+
+  timevar_pop (TV_IPA_LTO_DECL_INIT_IO);
+  ggc_free (all_file_decl_data);
+  all_file_decl_data = NULL;
+}
+
+
+/* Materialize all the bodies for all the nodes in the callgraph.  */
+
+static void
+materialize_cgraph (void)
+{
+  struct cgraph_node *node; 
+  timevar_id_t lto_timer;
+
+  if (!quiet_flag)
+    fprintf (stderr,
+	     flag_wpa ? "Materializing decls:" : "Reading function bodies:");
+
+  /* Now that we have input the cgraph, we need to clear all of the aux
+     nodes and read the functions if we are not running in WPA mode.  */
+  timevar_push (TV_IPA_LTO_GIMPLE_IN);
+
+  FOR_EACH_FUNCTION (node)
+    {
+      if (node->lto_file_data)
+	{
+	  lto_materialize_function (node);
+	  lto_stats.num_input_cgraph_nodes++;
+	}
+    }
+
+  timevar_pop (TV_IPA_LTO_GIMPLE_IN);
+
+  /* Start the appropriate timer depending on the mode that we are
+     operating in.  */
+  lto_timer = (flag_wpa) ? TV_WHOPR_WPA
+	      : (flag_ltrans) ? TV_WHOPR_LTRANS
+	      : TV_LTO;
+  timevar_push (lto_timer);
+
+  current_function_decl = NULL;
+  set_cfun (NULL);
+
+  if (!quiet_flag)
+    fprintf (stderr, "\n");
+
+  timevar_pop (lto_timer);
+}
+
+
+/* Show various memory usage statistics related to LTO.  */
+static void
+print_lto_report_1 (void)
+{
+  const char *pfx = (flag_lto) ? "LTO" : (flag_wpa) ? "WPA" : "LTRANS";
+  fprintf (stderr, "%s statistics\n", pfx);
+
+  fprintf (stderr, "[%s] read %lu SCCs of average size %f\n",
+	   pfx, num_sccs_read, total_scc_size / (double)num_sccs_read);
+  fprintf (stderr, "[%s] %lu tree bodies read in total\n", pfx, total_scc_size);
+  if (flag_wpa && tree_scc_hash.is_created ())
+    {
+      fprintf (stderr, "[%s] tree SCC table: size %ld, %ld elements, "
+	       "collision ratio: %f\n", pfx,
+	       (long) tree_scc_hash.size (),
+	       (long) tree_scc_hash.elements (),
+	       tree_scc_hash.collisions ());
+      hash_table<tree_scc_hasher>::iterator hiter;
+      tree_scc *scc, *max_scc = NULL;
+      unsigned max_length = 0;
+      FOR_EACH_HASH_TABLE_ELEMENT (tree_scc_hash, scc, x, hiter)
+	{
+	  unsigned length = 0;
+	  tree_scc *s = scc;
+	  for (; s; s = s->next)
+	    length++;
+	  if (length > max_length)
+	    {
+	      max_length = length;
+	      max_scc = scc;
+	    }
+	}
+      fprintf (stderr, "[%s] tree SCC max chain length %u (size %u)\n",
+	       pfx, max_length, max_scc->len);
+      fprintf (stderr, "[%s] Compared %lu SCCs, %lu collisions (%f)\n", pfx,
+	       num_scc_compares, num_scc_compare_collisions,
+	       num_scc_compare_collisions / (double) num_scc_compares);
+      fprintf (stderr, "[%s] Merged %lu SCCs\n", pfx, num_sccs_merged);
+      fprintf (stderr, "[%s] Merged %lu tree bodies\n", pfx,
+	       total_scc_size_merged);
+      fprintf (stderr, "[%s] Merged %lu types\n", pfx, num_merged_types);
+      fprintf (stderr, "[%s] %lu types prevailed (%lu associated trees)\n",
+	       pfx, num_prevailing_types, num_type_scc_trees);
+      fprintf (stderr, "[%s] GIMPLE canonical type table: size %ld, "
+	       "%ld elements, %ld searches, %ld collisions (ratio: %f)\n", pfx,
+	       (long) htab_size (gimple_canonical_types),
+	       (long) htab_elements (gimple_canonical_types),
+	       (long) gimple_canonical_types->searches,
+	       (long) gimple_canonical_types->collisions,
+	       htab_collisions (gimple_canonical_types));
+      fprintf (stderr, "[%s] GIMPLE canonical type pointer-map: "
+	       "%lu elements, %ld searches\n", pfx,
+	       num_canonical_type_hash_entries,
+	       num_canonical_type_hash_queries);
+    }
+
+  print_lto_report (pfx);
+}
+
+/* Perform whole program analysis (WPA) on the callgraph and write out the
+   optimization plan.  */
+
+static void
+do_whole_program_analysis (void)
+{
+  symtab_node *node;
+
+  lto_parallelism = 1;
+
+  /* TODO: jobserver communicatoin is not supported, yet.  */
+  if (!strcmp (flag_wpa, "jobserver"))
+    lto_parallelism = -1;
+  else
+    {
+      lto_parallelism = atoi (flag_wpa);
+      if (lto_parallelism <= 0)
+	lto_parallelism = 0;
+    }
+
+  timevar_start (TV_PHASE_OPT_GEN);
+
+  /* Note that since we are in WPA mode, materialize_cgraph will not
+     actually read in all the function bodies.  It only materializes
+     the decls and cgraph nodes so that analysis can be performed.  */
+  materialize_cgraph ();
+
+  /* Reading in the cgraph uses different timers, start timing WPA now.  */
+  timevar_push (TV_WHOPR_WPA);
+
+  if (pre_ipa_mem_report)
+    {
+      fprintf (stderr, "Memory consumption before IPA\n");
+      dump_memory_report (false);
+    }
+
+  cgraph_function_flags_ready = true;
+
+  if (cgraph_dump_file)
+    dump_symtab (cgraph_dump_file);
+  bitmap_obstack_initialize (NULL);
+  cgraph_state = CGRAPH_STATE_IPA_SSA;
+
+  execute_ipa_pass_list (g->get_passes ()->all_regular_ipa_passes);
+  symtab_remove_unreachable_nodes (false, dump_file);
+
+  if (cgraph_dump_file)
+    {
+      fprintf (cgraph_dump_file, "Optimized ");
+      dump_symtab (cgraph_dump_file);
+    }
+#ifdef ENABLE_CHECKING
+  verify_cgraph ();
+#endif
+  bitmap_obstack_release (NULL);
+
+  /* We are about to launch the final LTRANS phase, stop the WPA timer.  */
+  timevar_pop (TV_WHOPR_WPA);
+
+  timevar_push (TV_WHOPR_PARTITIONING);
+  if (flag_lto_partition_1to1)
+    lto_1_to_1_map ();
+  else if (flag_lto_partition_max)
+    lto_max_map ();
+  else
+    lto_balanced_map ();
+
+  /* AUX pointers are used by partitioning code to bookkeep number of
+     partitions symbol is in.  This is no longer needed.  */
+  FOR_EACH_SYMBOL (node)
+    node->aux = NULL;
+
+  lto_stats.num_cgraph_partitions += ltrans_partitions.length ();
+
+  /* Find out statics that need to be promoted
+     to globals with hidden visibility because they are accessed from multiple
+     partitions.  */
+  lto_promote_cross_file_statics ();
+  timevar_pop (TV_WHOPR_PARTITIONING);
+
+  timevar_stop (TV_PHASE_OPT_GEN);
+
+  /* Collect a last time - in lto_wpa_write_files we may end up forking
+     with the idea that this doesn't increase memory usage.  So we
+     absoultely do not want to collect after that.  */
+  ggc_collect ();
+
+  timevar_start (TV_PHASE_STREAM_OUT);
+  if (!quiet_flag)
+    {
+      fprintf (stderr, "\nStreaming out");
+      fflush (stderr);
+    }
+  lto_wpa_write_files ();
+  if (!quiet_flag)
+    fprintf (stderr, "\n");
+  timevar_stop (TV_PHASE_STREAM_OUT);
+
+  if (post_ipa_mem_report)
+    {
+      fprintf (stderr, "Memory consumption after IPA\n");
+      dump_memory_report (false);
+    }
+
+  /* Show the LTO report before launching LTRANS.  */
+  if (flag_lto_report || (flag_wpa && flag_lto_report_wpa))
+    print_lto_report_1 ();
+  if (mem_report_wpa)
+    dump_memory_report (true);
+}
+
+
+static GTY(()) tree lto_eh_personality_decl;
+
+/* Return the LTO personality function decl.  */
+
+tree
+lto_eh_personality (void)
+{
+  if (!lto_eh_personality_decl)
+    {
+      /* Use the first personality DECL for our personality if we don't
+	 support multiple ones.  This ensures that we don't artificially
+	 create the need for them in a single-language program.  */
+      if (first_personality_decl && !dwarf2out_do_cfi_asm ())
+	lto_eh_personality_decl = first_personality_decl;
+      else
+	lto_eh_personality_decl = lhd_gcc_personality ();
+    }
+
+  return lto_eh_personality_decl;
+}
+
+/* Set the process name based on the LTO mode. */
+
+static void 
+lto_process_name (void)
+{
+  if (flag_lto)
+    setproctitle ("lto1-lto");
+  if (flag_wpa)
+    setproctitle ("lto1-wpa");
+  if (flag_ltrans)
+    setproctitle ("lto1-ltrans");
+}
+
+
+/* Initialize the LTO front end.  */
+
+static void
+lto_init (void)
+{
+  lto_process_name ();
+  lto_streamer_hooks_init ();
+  lto_reader_init ();
+  lto_set_in_hooks (NULL, get_section_data, free_section_data);
+  memset (&lto_stats, 0, sizeof (lto_stats));
+  bitmap_obstack_initialize (NULL);
+  gimple_register_cfg_hooks ();
+}
+
+
+/* Main entry point for the GIMPLE front end.  This front end has
+   three main personalities:
+
+   - LTO (-flto).  All the object files on the command line are
+     loaded in memory and processed as a single translation unit.
+     This is the traditional link-time optimization behavior.
+
+   - WPA (-fwpa).  Only the callgraph and summary information for
+     files in the command file are loaded.  A single callgraph
+     (without function bodies) is instantiated for the whole set of
+     files.  IPA passes are only allowed to analyze the call graph
+     and make transformation decisions.  The callgraph is
+     partitioned, each partition is written to a new object file
+     together with the transformation decisions.
+
+   - LTRANS (-fltrans).  Similar to -flto but it prevents the IPA
+     summary files from running again.  Since WPA computed summary
+     information and decided what transformations to apply, LTRANS
+     simply applies them.  */
+
+void
+lto_main (void)
+{
+  /* LTO is called as a front end, even though it is not a front end.
+     Because it is called as a front end, TV_PHASE_PARSING and
+     TV_PARSE_GLOBAL are active, and we need to turn them off while
+     doing LTO.  Later we turn them back on so they are active up in
+     toplev.c.  */
+  timevar_pop (TV_PARSE_GLOBAL);
+  timevar_stop (TV_PHASE_PARSING);
+
+  timevar_start (TV_PHASE_SETUP);
+
+  /* Initialize the LTO front end.  */
+  lto_init ();
+
+  timevar_stop (TV_PHASE_SETUP);
+  timevar_start (TV_PHASE_STREAM_IN);
+
+  /* Read all the symbols and call graph from all the files in the
+     command line.  */
+  read_cgraph_and_symbols (num_in_fnames, in_fnames);
+
+  timevar_stop (TV_PHASE_STREAM_IN);
+
+  if (!seen_error ())
+    {
+      /* If WPA is enabled analyze the whole call graph and create an
+	 optimization plan.  Otherwise, read in all the function
+	 bodies and continue with optimization.  */
+      if (flag_wpa)
+	do_whole_program_analysis ();
+      else
+	{
+	  timevar_start (TV_PHASE_OPT_GEN);
+
+	  materialize_cgraph ();
+	  if (!flag_ltrans)
+	    lto_promote_statics_nonwpa ();
+
+	  /* Let the middle end know that we have read and merged all of
+	     the input files.  */ 
+	  compile ();
+
+	  timevar_stop (TV_PHASE_OPT_GEN);
+
+	  /* FIXME lto, if the processes spawned by WPA fail, we miss
+	     the chance to print WPA's report, so WPA will call
+	     print_lto_report before launching LTRANS.  If LTRANS was
+	     launched directly by the driver we would not need to do
+	     this.  */
+	  if (flag_lto_report || (flag_wpa && flag_lto_report_wpa))
+	    print_lto_report_1 ();
+	}
+    }
+
+  /* Here we make LTO pretend to be a parser.  */
+  timevar_start (TV_PHASE_PARSING);
+  timevar_push (TV_PARSE_GLOBAL);
+}
+
+#include "gt-lto-lto.h"
diff --git a/gcc-4.9/gcc/lto/lto.h b/gcc-4.9/gcc/lto/lto.h
new file mode 100644
index 000000000..3c3c3264c
--- /dev/null
+++ b/gcc-4.9/gcc/lto/lto.h
@@ -0,0 +1,72 @@
+/* LTO declarations.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef LTO_H
+#define LTO_H
+
+#include "hashtab.h"
+#include "vec.h"
+
+/* A file.  */
+typedef struct lto_file_struct
+{
+  /* The name of the file.  */
+  const char *filename;
+  /* The offset for the object inside an ar archive file (or zero).  */
+  off_t offset;
+} lto_file;
+
+/* In lto-lang.c  */
+extern const char *resolution_file_name;
+
+/* In lto.c  */
+extern tree lto_eh_personality (void);
+extern void lto_main (void);
+extern void lto_read_all_file_options (void);
+
+/* In lto-elf.c or lto-coff.c  */
+extern lto_file *lto_obj_file_open (const char *filename, bool writable);
+extern void lto_obj_file_close (lto_file *file);
+struct lto_section_list;
+extern htab_t lto_obj_build_section_table (lto_file *file, struct lto_section_list *list);
+extern htab_t lto_obj_create_section_hash_table (void);
+extern void lto_obj_begin_section (const char *name);
+extern void lto_obj_append_data (const void *data, size_t len, void *block);
+extern void lto_obj_end_section (void);
+extern lto_file *lto_set_current_out_file (lto_file *file);
+extern lto_file *lto_get_current_out_file (void);
+
+/* Hash table entry to hold the start offset and length of an LTO
+   section in a .o file.  */
+struct lto_section_slot
+{
+  const char *name;
+  intptr_t start;
+  size_t len;
+  struct lto_section_slot *next;
+};
+
+/* A list of section slots */
+struct lto_section_list
+{
+  struct lto_section_slot *first, *last;
+};
+
+#endif /* LTO_H */