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2004-05-11  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (delete_tree_cfg): Update call to
	free_basic_block_vars.

2004-05-10  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-live.h: Fix typo in #include guard.

2004-05-08  Jeff Sturm  <jsturm@one-point.com>

	* tree-eh.c (lower_catch): Lower catch body in context of
	catch_region.

2004-05-07  Richard Henderson  <rth@redhat.com>

	* tree-eh.c (tree_could_trap_p): Use get_base_address on references.
	
2004-05-07  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Remove documentation for -ftree-copyprop.
	Update documentation for -ftree-pre.

2004-05-06  Richard Henderson  <rth@redhat.com>

	* stmt.c (parse_output_constraint): Don't warn for read-write
	memory operand.
	* gimplify.c (gimplify_asm_expr): Force in-out memory operands
	to minimal lvalues, then expand to non-matching constraints.

2004-05-06  Zack Weinberg  <zack@codesourcery.com>

	* c-decl.c (finish_function): When !targetm.have_ctors_dtors,
	record static constructors and destructors here...
	(c_expand_body_1): ... not here.
	* c-objc-common.c (start_cdtor, finish_cdtor): Collapse
	together into
	(build_cdtor): ...here.  Update to construct a complete tree
	for the function.  No need to call push_scope, pop_scope, or
	clear_last_expr, or set current_function_cannot_inline.
	(c_objc_common_finish_file): Just call build_cdtor for static
	ctors/dtors, then clear the variables.  Do this before calling
	cgraph_finalize_compilation_unit and cgraph_optimize.

2004-05-06  Richard Henderson  <rth@redhat.com>

	* fold-const.c (fold): Don't build COND_EXPR from comparisons for
	boolean and integer result types.  Handle X ^ X for TRUTH_XOR_EXPR.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* tree-nested.c (create_tmp_var_for): Disallow variable sized types.
	(convert_nonlocal_reference): Set val_only false for the base of a
	component or array reference.
	(convert_local_reference): Likewise.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* gimplify.c (create_tmp_var): Disallow variable sized objects.
	(gimplify_modify_expr): Don't memcpy for VA_ARG_EXPR.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* fold-const.c (operand_equal_p): Replace only_const argument with
	flags.  Allow pure functions if OEP_PURE_SAME.
	(fold, nondestructive_fold_binary_to_constant): Use OEP_ONLY_CONST.
	* tree-cfg.c (phi_alternatives_equal): Fix operand_equal_p flag type.
	* tree-ssa-dom.c (avail_expr_eq): Use OEP_PURE_SAME.
	* tree.h (enum operand_equal_flag): New.
	(operand_equal_p): Update argument list.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-operands.c (get_call_flags): Remove.
	(get_expr_operands): Use call_expr_flags.
	* tree-alias-common.c (call_may_clobber): Likewise.
	(call_may_return): Likewise.

2004-04-05  Andrew Pinski  <pinskia@physics.uc.edu>

	PR c/15062
	* c-typeck.c (build_asm_expr): Mark the output operands
	to an asm addressable, if necessary.

2004-05-05  Steven Bosscher  <stevenb@suse.de>

	* Makefile.in (GTFILES): Remove duplicate basic-block.h.

2004-05-04  Richard Henderson  <rth@redhat.com>

	* gimplify.c (build_addr_expr_with_type): Set TREE_ADDRESSABLE.
	(gimplify_modify_expr): Turn variable-width assignment into memcpy.
	* tree-nested.c (convert_local_reference): Set val_only after default.

2004-05-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (tree_cfg2vcg): Rename from tree_cfg2dot.  Update all
	users.
	Emit flowgraph using VCG syntax.
	* tree-dump.c (dump_files): Rename -fdump-tree-dot to
	-fdump-tree-vcg.
	* tree.h (enum tree_dump_index): Rename TDI_dot to TDI_vcg.
	* doc/invoke.texi: Update documentation to describe
	-fdump-tree-vcg.

2004-05-03  Andrew Pinski  <pinskia@physics.uc.edu>

	* objc/objc-act.c (build_objc_string_object):
	Add the fields to the purpose of the list for
	the constructor.

2004-05-03  Richard Henderson  <rth@redhat.com>

	* c-simplify.c (gimplify_if_stmt): Loop for else-if.

2004-05-03  Andrew Pinski  <pinskia@physics.uc.edu>

	PR optimization/15245
	* tree-ssa-phiopt.c (conditional_replacement): Use fold_convert
	instead of convert.

2004-05-03  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_compound_lval): Gimplify non-constant
	array indices into a temporary variable.

2004-04-30  Richard Henderson  <rth@redhat.com>

	* builtins.c (validate_arglist): Don't reject side effects.
	(simplify_builtin_strcpy): Do reject side effects in length.

2004-04-30  Jeff Law  <law@redhat.com>

	* tree-outof-ssa.c (eliminate_build): Move code which verifies
	that all of a PHI's arguments do not have a partition if the
	result does not have a partition from here to...
	(rewrite_trees): Here.

2004-04-24  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (factored_computed_goto_label,
	factored_computed_goto): Removed.
	(disband_implicit_edges): Unfactor computed gotos without
	using them.

2004-04-23  Per Bothner  <per@bothner.com>

	* expr.c (expr_wfl_stack):  Remove unused global.

	Pre-patches for future source_location / location_t merge.
	* tree.h (EXPR_LOCATION, EXPR_HAS_LOCATION):  New macros.
	* expr.c (expand_expr_real, expand_expr_real_1):  Use new macros.
	* gimple-low.c (lower_stmt):  Likewise.
	* gimplify.c (annotate_all_with_locus):  Likewise.
	* print-tree.c (print_node):  Likewise.
	* tree-inline.c (expand_call_inline):  Likewise.
	* tree-pretty-print.c (tree-pretty-print.c):  Likewise.
	* tree-sra.c (scalarize_structure_assignment, emit_scalar_copies,
	scalarize_call_expr):  Likewise.
	* tree-ssa-pre.c (code_motion):  Likewise.
	
2004-04-23  Andrew Pinski  <pinskia@physics.uc.edu>

	* c-simplify.c (gimplify_decl_stmt) [TYPE_DECL]:
	Do not check the type.

2004-04-22  Jeff Law  <law@redhat.com>

	* tree-into-ssa.c (rewrite_initialize_block_local_data): Mark all
	arguments as potentially unused.  Do not bother to VARRAY_CLEAR
	the block_defs.  Instead abort if we are presented with a block
	which has a nonempty block_defs.  Wrap entire thing inside
	#ifdef ENABLE_CHECKING.
	* tree-ssa-dom.c (dom_opt_initialize_block_local_data): Similarly

	* tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Do not mark
	arguments to bypassed PHIs as needing to be rewritten.

2004-04-21  Richard Henderson  <rth@redhat.com>

	PR middle-end/14978
	* tree-nested.c (convert_nonlocal_reference): Set val_only when
	processing any otherwise unhandled expression.

2004-04-21  Jeff Law  <law@redhat.com>

	* tree-ssa-copy.c (cprop_operand): Break out of cprop_into_stmt.
	(cprop_into_stmt): Use cprop_operand.  Rearrange slightly to avoid
	switch statement inside a loop.

	* tree-flow.h (var_ann_d): Add "current_def" field.
	(register_new_def): Lose last argument (currdefs table).
	* tree-into-ssa.c (currdefs): Remove.
	(rewrite_into_ssa): Initialize current_def field on each variable's
	annotation.  Remove initialization/clearing of currdefs.
	(set_value_for, get_value_for): Kill.
	(rewrite_initialize_block): Update call to register_new_def.
	(rewrite_stmt): Similarly.
	(rewrite_finalize_block): Get/set a _DECL node's current
	definition from its annotation.
	(get_reaching_def): Similarly.
	(register_new_def): Similarly.  Lose last argument.
	* tree-ssa-dom.c (currdefs): Remove.
	(get_value_for, set_value_for): Simplify.
	(tree_ssa_dominator_optimize): Initialize current_def on each
	variable's annotation.  Remove initialization/clearing of currdefs.
	(thread_across_edge): Lose unnecessary argument to register_new_def.
	(record_equivalences_from_phis): Likewise.
	(register_definitions_for_stmt): Likewise.
	(restore_currdefs_to_original_value): Get/set a _DECL node's current
	definition from its annotation.  Lose unnecessary "table" argument.
	(dom_opt_finalize_block): Corresponding changes.

	* tree-dfa.c (free_df_for_stmt): Release memory back to the GC
	system immediately.

2004-04-21  Ben Elliston  <bje@au.ibm.com>

	PR middle-end/14730
	* expr.c (expand_expr_real_1) <SWITCH_EXPR>: Discard out of bounds
	case label values and ranges.  Saturate case range values that
	exceed the minimum or maximum permitted value for the controlling
	expression type to TYPE_MIN_VALUE or TYPE_MAX_VALUE.

2004-04-20  Jeff Law  <law@redhat.com>

	* tree-into-ssa.c (register_new_def): Avoid pushing useless
	information onto the block local definition stack.

	* tree-into-ssa.c (register_new_def): If there is no current
	reaching definition for SSA_NAME_VAR (DEF), then just push
	SSA_NAME_VAR (DEF) onto the stack.
	(rewrite_finalize_block): If we pop a _DECL node from the stack,
	then the _DECL node has no current reaching definition.
	* tree-ssa-dom.c (restore_currdefs_to_original_value): Similarly.

2004-04-19  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c: Reinstate all changes from 2004-04-12.
	(lookup_avail_expr): Do not access a hash table object after
	it has been freed.

2004-04-19  Daniel Berlin  <dberlin@dberlin.org>

	* doc/passes.texi: Add blurb about PRE.

2004-04-19  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa-phiopt.c (conditional_replacement):
	Catch some more non-gimple.

2004-04-19  Jan Hubicka  <jh@suse.cz>

	* predict.c (combine_predictions_for_bb): Fix pasto.

2004-04-18  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (estimate_num_insn_1): Deal properly with
	builtin_constant_p and builtin_expect.

2004-04-17  Andrew MacLeod  <amacleod@redhat.com>

	* doc/invoke.texi (tree-ter, tree-lrs): Document options.

2004-04-17  Paul Brook  <paul@codesourcery.com>

	* Makefile.in: Set GMPLIBS and GMPINC.
	* configure.ac: Add GMPLIBS and GMPINC.
	* configure: Regenerate.

2004-04-16  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt (ftree-lrs): New common option.
	* flags.h (flag_tree_live_range_split): New flag.
	* opts.c (decode_options): Turn on LRS by default.
	(common_handle_option): Set LRS flag to specified value.
	* toplev.c (flag_tree_live_range_split): Initialize.
	(lang_independent_options f_): Add tree-lrs.
	* tree-outof-ssa.c (rewrite_out_of_ssa): Use LRS flag.
	* tree-ssa-copyrename.c (copy_rename_partition_coalesce): Don't coalesce
	variables if one is a hardware register.  Coalesce inlined user vars.
	(rename_ssa_copies): Scan blocks first, then PHI nodes.

2004-04-15  Andrew Pinski  <pinskia@physics.uc.edu>

	* builtins.c (fold_builtin_isascii): Do not return non-gimple
	code when we are in gimple form.
	(fold_builtin_isdigit): Do not return non-gimple
	code when we are in gimple form.

	* c-simplify.c (gimplify_decl_stmt): Handle TYPE_DECL.

2004-04-14  Paul Brook  <paul@codesourcery.com>

	* Makefile.in (GMPLIBS, GMPINC): Don't set.
	* configure.ac: Remove checks for GMP.
	* configure: Regenerate.

2004-04-13  Diego Novillo  <dnovillo@redhat.com>

	* fold-const.c, tree-ssa-ccp.c, tree-ssa-dom.c,
	tree-ssa.c, tree.c: Replace all uses of TREE_UNSIGNED with
	TYPE_UNSIGNED or DECL_UNSIGNED.

	* c-semantics.c (build_stmt): Don't check type nodes for
	side effects.

2004-04-13  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c: Revert all changes from 2004-04-12.

2004-04-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (struct expr_hash_elt): Add new field for hash value.
	(initialize_hash_element): New LHS argument.  Callers changed.
	Initialize the hash value field.
	(remove_local_expressions_from_table): Use htab_remove_elt_with_hash.
	(update_rhs_and_lookup_avail_expr): Similary.
	(lookup_avail_expr): Use htab_find_slot_with_hash.  Simplify slightly
	and pass LHS to initialize_hash_element.
	(record_cond): Also use htab_find_slot_with_hash.  Initialize the
	hash table entry with initialize_hash_element.
	(avail_expr_eq): Use the saved hash value rather than calling into
	the hash functions again.

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Slightly rearrange
	code to clear tables before each iteration to be clearer.

	* tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Use
	DEF_OPS and VDEF_OPS instead of STMT_DEF_OPS and STMT_VDEF_OPS.

2004-04-12  Diego Novillo  <dnovillo@redhat.com>

	* flags.h (flag_tree_loop): Remove.  Update all users.
	* opts.c (common_handle_option) <OPT_ftree_loop_optimize>: Remove.
	* toplev.c (f_options): Remove -ftree-loop-optimize.
	* tree-optimize.c (init_tree_optimization_passes): Don't
	schedule pass_loop.
	* tree-ssa-loop.c (tree_ssa_loop_opt): Remove.
	(gate_loop): Remove.
	* doc/invoke.texi: Remove documentation for -ftree-loop-optimize.

2004-04-12  Diego Novillo  <dnovillo@redhat.com>

	* c-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
	* c-semantics.c (expand_stmt_toplev): Remove.
	* langhooks-def.h (LANG_HOOKS_RTL_EXPAND_INITIALIZER): Remove.
	(LANG_HOOKS_RTL_EXPAND_START): Remove.
	(LANG_HOOKS_RTL_EXPAND_STMT): Remove.
	(LANG_HOOKS_RTL_EXPAND_END): Remove.
	* langhooks.h (struct lang_hooks_for_rtl_expansion): Remove.
	(struct lang_hooks): Update.
	* tree-optimize.c (tree_rest_of_compilation): Don't call
	lang_hooks.rtl_expand.start nor lang_hooks.rtl_expand.end.
	Call expand_expr_stmt_value instead of
	lang_hooks.rtl_expand.stmt.
	* objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.


2004-04-12  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_do_switch_warnings): Use EXPR_LOCUS instead
	of STMT_LINENO.
	(c_walk_subtrees): Likewise.
	(c_estimate_num_insns_1): Remove FILE_STMT.
	* c-common.def (FILE_STMT): Remove.
	* c-common.h (FILE_STMT_FILENAME_NODE): Remove.
	(FILE_STMT_FILENAME, STMT_LINENO, STMT_LINENO_FOR_FN_P): Remove.
	(c_common_stmt_codes): Remove FILE_STMT.
	* c-dump.c (dump_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
	* c-parse.in (lineno_stmt, lineno_label): Likewise.
	* c-pretty-print.c (pp_c_statement): Remove FILE_STMT.
	* c-semantics.c (add_stmt): Don't emit FILE_STMT.  Do set
	EXPR_LOCUS if not yet set.
	(finish_stmt_tree): Don't set line for end of function.
	(build_stmt): Set EXPR_LOCUS instead of STMT_LINENO.
	(prep_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
	* c-simplify.c (c_gimplify_stmt): Remove FILE_STMT.
	(gimplify_block): Save and restore entire locus.
	(stmt_expr_last_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
	* doc/c-tree.texi (FILE_STMT, FILE_STMT_FILENAME, STMT_LINENO): Remove.

2004-04-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (true_exprs, false_exprs): Kill.
	(struct expr_hash_elt): New structure for the expression hash table.
	(struct dom_walk_block_data): Kill block local true_exprs and
	false_exprs.
	(get_eq_expr_value): One less local varray argument.  Fix prototype.
	Use record_cond rather than record_cond_is_{true,false}.
	(true_false_expr_hash, true_false_expr_eq): Kill.
	(record_cond_is_true, record_cond_is_false): Collapse into ...
	(record_cond): New function.
	(tree_ssa_dominator_optimize): Kill references to true_exprs and
	false_exprs.  Use "free" as the free function for the avail_exprs
	hash table.
	(dom_opt_initialize_block_local_data): No longer initialize
	block local true/false expressions.
	(initialize_hash_element): New function.
	(remove_local_expressions_from_table): Use initialize_hash_element.
	(update_rhs_and_lookup_avail_expr): Similarly.
	(dom_opt_finalize_block): Record true/false expressions into the
	main avail_expr hash table.  Unwind main hash table appropriately.
	Use record_cond rather than record_cond_is_{true,false}.
	(record_equivalences_from_incoming_edge): Pass block local avail_exprs
	varray instead of block local true/false varrays to get_eq_expr_value.
	(dump_dominator_optimization_stats): Update to reflect that the
	true/false expression hash tables are gone.
	(lookup_avail_expr): Simplify slightly now that we only have one
	expression hash table.
	(avail_expr_hash, avail_expr_eq): Generalize slightly to handle new
	hash table entry structure and having true/false expression information
	in the available expression hash table.

2004-04-09  Jeff Law  <law@redhat.com>

	* tree-ssa_dom.c (register_definitions_for_stmt): Accept a statement
	annotation rather than the statement itself.  Callers changed.
	Use [V]DEF_OPS rather than STMT_[V]DEF_OPS.
	* tree-ssa-operands.c (get_stmt_operands): Slightly reorganize to
	avoid unnecessary calls to stmt_ann.
	* tree-ssa-pre.c (expr_phi_insertion): Get the statement's annotation
	and use [V]USE_OPS rather than STMT_[V]USE_OPS.
	(same_e_version_phi_result): Similarly
	(process_left_occs_and_kills): Similarly for [V]DEF_OPS and
	STMT_[V]DEF_OPS.
	* tree-ssa.c (replace_immediate_uses): Similarly.
	(verify_ssa): Similarly.  Also verify that VDEF_OPs uses are dominated
	by their sets.

	* tree-into-ssa.c (insert_phi_nodes_for): Use passed in worklist
	varray instead of allocated one for every variable we rewrite into
	SSA form.
	(insert_phi_nodes_1): Pass worklist varray from caller to
	insert_phi_nodes_for.
	(insert_phi_nodes): Allocate a worklist for insert_phi_nodes_for
	and pass it to insert_phi_nodes_1.

2004-04-08  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (nonzero_vars): Turn it into a bitmap.
	(tree_ssa_dominator_optimize): Update initialization, clearing and
	freeing of nonzero_vars.
	(restore_nonzero_vars_to_original_value): New function.
	(dom_opt_finalize_block): Use it.
	(record_var_is_nonzero): Only record the variable into the block
	local nonzero vars array if it did not already have a nonzero property.
	(lookup_avail_expr): Lookup the nonzero property of an SSA_NAME with
	a bitmap test.

	* fold-const.c (fold): Remove attempt to share code which
	simplifies tests against the highest/lowest value of a
	range between the main folder and the nondestructive folder.

2004-04-08  Brian Booth  <bbooth@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-into-ssa.c (invalidate_name_tags): New function.
	Mark aliases of invalidated name tags for renaming.
	(rewrite_into_ssa): Call invalidate_name_tags.

2004-04-07  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_call_expr): Remove argument POST_P.
	Update all callers.
	Don't use POST_P when gimplifying the call expression.

2004-04-07  Diego Novillo  <dnovillo@redhat.com>

	* doc/tree-ssa.texi: Add documentation for the dominator
	walker.

2004-04-07  Andrew MacLeod  <amacleod@redhat.com>

	* tree-outof-ssa.c: Update comments and reformat for legibility.
	* tree-ssa-copyrename.c: Update comments and reformat for legibility.
	* tree-ssa-live.c: Update comments and reformat for legibility.
	* tree-ssa-live.h: Update comments and reformat for legibility.

2004-04-07  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_call_expr): Don't use POST_P when
	gimplifying CALL_EXPR arguments.

2004-04-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c: Update comments and reformat for legibility.
	(find_vars_r): Remove special casing of MODIFY_EXPR and
	simplify logic.
	(compute_reached_uses, compute_reaching_defs, remove_decl,
	find_decl_location): Remove.
	(discover_nonconstat_array_refs_r,
	discover_nonconstant_array_refs): Move ...
	* tree-outof-ssa.c: ... here.

2004-04-05  Richard Henderson  <rth@redhat.com>

	* tree-simple.c (is_gimple_min_invariant): Disallow &a+i.
	* tree-ssa-ccp.c (maybe_fold_stmt_addition): Rename from
	maybe_fold_stmt_plus.  Handle MINUS_EXPR.
	(fold_stmt_r): Pass MINUS_EXPR to it.

2004-04-05  Ben Elliston  <bje@au.ibm.com>

	* Makefile.in (OBJS-common): Remove tree-browser.o.
	(cc1): Depend on @TREEBROWSER@ and include in list of objects.
	* configure.ac: Add --enable-tree-browser option.
	* configure: Rebuild.

2004-04-05  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa-ccp.c (fold_stmt_r): Fix whitespace formatting.
	(set_rhs): Likewise.

2004-04-03  Paolo Bonzini  <bonzini@gnu.org>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-alias-common.c (find_func_aliases): Support
	assigning to BIT_FIELD_REFs.
	* tree-cfg.c (verify_expr): Don't allow assign to
	a register with BIT_FIELD_REF.
	* tree-dfa.c (get_virtual_var): Add consistency check on
	the shape of expected VARs.
	(discover_nonconstant_array_refs_r): Go through BIT_FIELD_REFs.
	* tree-simple.c: Document that BIT_FIELD_REFs are valid lvalues.
	* tree-ssa.c (set_is_used): Go through BIT_FIELD_REFs.
	* tree-ssa-operands.c (get_expr_operands): Mark VA_ARG_EXPR
	nodes as making volatile references.

2004-04-02  Fariborz Jahanian <fjahanian@apple.com>

	* c-convert.c (convert): Make convert work when converting
	to compatible types across translation unit.

2004-04-02  Andrew Pinski  <pinskia@physics.uc.edu>

	* Makefile.in (stage2_build): Remove support for
	rebuilding libbanshee.
	* configure.ac: Remove support for rebuilding
	libbanshee.
	* config.gcc (powerpc-*-darwin*): Do not rebuild
	libbanshee.

2004-04-01  Kazu Hirata  <kazu@cs.umass.edu>

	* tree-ssa-forwprop.c: Add a comment about forward propagation
	of TRUTH_NOT_EXPR.

2004-04-01  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (tree_rest_of_compilation): Fix typo in
	setting of in_gimple_form.

2004-04-01  Jeff Law  <law@redhat.com>

	* fold-const.c (fold_relational_hi_lo): Do not return non-gimple
	code when we are in gimple form.
	* tree-optimize.c (tree_rest_of_compilation): Note when we are in
	gimple form.
	* tree-ssa-ccp.c (ccp_fold): Tighten tests on return value from
	nondestructive_fold_{unary,binary}_to_constant.
	* tree.h (in_gimple_form): Declare.

	* tree-ssa.c (ssa_remove_edge): Correct looping structure.
	(ssa_redirect_edge): Similarly

2004-03-30  Brian Booth  <bbooth@redhat.com>

	* tree-pretty-print.c (dump_vops): Add flags argument and
	propagate it to dump_generic_node calls.
	(dump_generic_node): Update dump_vops call.

2004-03-29  Diego Novillo  <dnovillo@redhat.com>

	* configure.ac: Emit confirmation messages for libbanshee.
	* configure: Regenerate.

2004-03-29  Jan Hubicka  <jh@suse.cz>

	PR 14756
	* cgraphunit.c (cgraph_decide_inlining): Rewrite handling of
	always_inline functions.

2004-03-28  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (expand_call_inline):  Remove fixme introduced by
	nested function patch.

2004-03-26  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-operands.c (get_stmt_operands): Remove always-true
	predicate.

	* tree-ssa-alias.c (maybe_create_global_var): Create
	.GLOBAL_VAR if there are no call-clobbered variables.
	* tree-ssa-operands.c (get_stmt_operands): Add call-clobbering
	VDEFs for asm ("":::"memory") if there are call-clobbered
	variables or if .GLOBAL_VAR has been created.


2004-03-26  Diego Novillo  <dnovillo@redhat.com>

	* passes.c (rest_of_compilation): Re-enable .01.rtl
	dumps.

2004-03-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-pretty-print.c (dump_generic_node) <WITH_RECORD_EXPR>: Remove.
	* tree-inline.c (estimate_num_insns_1) <WITH_RECORD_EXPR>: Remove.
	* fold-const.c (fold_relational_hi_lo): Change type of argument
	'type_p' to const tree and rename it to 'type'.  Update
	all callers.

2004-03-25  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Remove c-call-graph.o
	(c-call-graph.o): Remove.
	* c-call-graph.c: Remove.
	* c-tree.h (print_call_graph): Remove.
	(debug_call_graph): Remove.
	* tree-cfg.c: Update/add comments everywhere.
	(pre_insert_on_edge): Rename from bsi_insert_on_edge_immediate.
	* tree-flow.h (build_tree_cfg): Make static.
	(tree_cfg2dot): Likewise.
	(verify_stmt): Likewise.
	* tree-ssa-pre.c (insert_one_operand): Call pre_insert_on_edge.

2004-03-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-alias.c (struct alias_info): Change type of field
	'num_references' to varray_type.  Update all users.

2004-03-24  Jeff Law  <law@redhat.com>

	* c-mudflap (mflang_flush_calls): Use push_scope/pop_scope instead
	of pushlevel and poplevel.

2004-03-23  Richard Henderson  <rth@redhat.com>

	PR middle-end/14694
	* c-common.c (handle_alias_attribute): Mark aliased variables
	to be TREE_STATIC.

2004-03-23  Jeff Law  <law@redhat.com>

	* tree-into-ssa.c (register_new_def): Lose unnecessary VAR argument,
	instead derive VAR from DEF argument.
	(rewrite_initialize_block, rewrite_stmt, rewrite_operand): Corresponding
	changes.
	* tree-ssa-dom.c (register_definitions_for_stmt): Corresponding changes.
	(record_equivalences_from_phis): Likewise.
	(restore_currdefs_to_original_value): New, extracted from ...
	(dom_opt_finalize_block): Use restore_currdefs_to_original_value.
	Restore currdefs after threading across a true edge.
	(thread_across_edge): Register new defintions when we walk through
	a PHI node or real statement.
	* tree-flow.h (register_new_def): Updated.

2004-03-23  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-dce.c (find_obviously_necessary_stmts,
	perform_tree_ssa_dce): Do not remove loops.

2004-03-19  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14643
	* tree-ssa-alias.c (group_aliases_into): Don't add a variable
	to its own may-alias set.
	(create_alias_map_for): New.
	(setup_pointers_and_addressables): Call it.
	Fix allocation of AI->ADDRESSABLE_VARS and AI->POINTERS.
	If there are no addressable variables and more than one
	dereferenced pointers, add type tags to the ADDRESSABLE_VARS
	array.
	(get_tmt_for): Add comment about using alias set equality when
	checking for existing tags.

2004-03-19  Kazu Hirata  <kazu@cs.umass.edu>

	* fold-const.c (fold_relational_const): Remove dead code.

2004-03-19  Dale Johannesen  <dalej@apple.com>

	* tree-ssa-dse.c (dse_optimize_stmt):  Redirect uses feeding into
	a deleted store correctly.

2004-03-19  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Fix typo.
	Eliminate unnecessary test of VAL.

	* tree-dfa.c (find_hidden_use_vars): Also look inside the
	PENDING_SIZES list for hidden uses.
	* tree-optimize.c (tree_rest_of_compilation): Expand used variables
	before setting up parameters.
	* tree-ssa-copyrename.c (rename_ssa_copies): Do nothing for copies
	where the LHS has a hidden use.

2004-03-18  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TREE_FLOW_H): Reformat.
	(OBJS-common): Add tree-into-ssa.o and tree-outof-ssa.o.
	(tree-ssa.o): Remove dependency on domwalk.h and tree-ssa-live.h
	(tree-into-ssa.o): New.
	(tree-outof-ssa.o): New.
	(GTFILES): Remove tree-ssa.c.
	(gt-tree-ssa.h): Remove.
	* tree-into-ssa.c: New file.
	Move all the functions used to rename into SSA from tree-ssa.c.
	Update/add comments.
	Remove unused variables and structures.
	Don't use GGC for memory allocation.
	* tree-outof-ssa.c: New file.
	Move all the functions used to rename out of SSA from
	tree-ssa.c.
	Update/add comments.
	* tree-ssa-alias.c (compute_points_to_and_addr_escape): Add
	bibliographic reference.

2004-03-18  Jeff Law  <law@redhat.com>

	* Makefile.in (tree-tailcall.o): Depend on langhooks.h.
	* tree-tailcall.c: Include langhooks.h.
	(find_tail_calls): Use types_compatible_p langhook instead of
	equality test of TYPE_MAIN_VARIANT.

	* tree-nested.c (get_chain_decl): Mark the chain decl with
	TREE_NO_WARNING.

2004-03-18  Devang Patel  <dpatel@apple.com>

	* tree-ssa-live.c (new_tree_live_info): Set num_blocks to
	last_basic_block instead of n_basic_blocks.
	(calculate_live_on_entry): Use last_basic_block instead of
	n_basic_blocks.
	(calculate_live_on_exit): Same.

2004-03-17  Jeff Law  <law@redhat.com>

	* tree-tailcall.c (find_tail_calls): Tighten test for tail recursion.

2004-03-17  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14511
	* tree-ssa-alias.c (compute_flow_insensitive_aliasing): Do not
	ignore read-only variables.
	(may_alias_p): Fix pointer-to-var calculation when 'var' is an
	array.

2004-03-17  Jan Hubicka  <jh@suse.cz>

	* tree-ssa.c (rewrite_into_ssa, compute_global_livein): Fix.

2004-03-17  Paolo Bonzini  <bonzini@gnu.org>

	* builtins.c (expand_builtin_constant_p,
	purge_builtin_constant_p): Remove.
	(expand_builtin): Expand __builtin_constant_p to zero.
	* function.c (struct function): Remove calls_constant_p.
	(current_function_calls_constant_p): Remove.
	* passes.c (rest_of_handle_gcse): Do not run
	purge_builtin_constant_p.
	* rtl.def (CONSTANT_P_RTX): Die die die.

	* cse.c (fold_rtx): Do not handle CONSTANT_P_RTX.
	* expr.c (emit_move_insn): Likewise.
	* gcse.c (want_to_gcse_p, gcse_constant_p): Likewise.
	* genrecog.c (validate_pattern): Likewise.
	* recog.c (immediate_operand): Likewise.
	* rtl.h (CONSTANT_P): Likewise.
	* simplify-rtx.c (simplify_rtx): Likewise.
	* config/alpha/alpha.c (input_operand): Likewise.
	* config/arm/arm.c (THUMB_LEGITIMATE_CONSTANT_P): Likewise.
	* config/c4x/c4x.c (const_operand): Likewise.
	* config/cris/cris.c (cris_gotless_symbol,
	cris_got_symbol): Likewise.
	* config/frv/frv.h (LEGITIMATE_PIC_OPERAND_P): Likewise.
	* config/ia64/ia64.c (gr_reg_or_5bit_operand,
	gr_reg_or_6bit_operand, gr_reg_or_8bit_operand,
	gr_reg_or_8bit_adjusted_operand,
	gr_reg_or_8bit_and_adjusted_operand,
	gr_reg_or_14bit_operand, gr_reg_or_22bit_operand,
	shift_count_operand, shift_32bit_count_operand): Likewise.
	* config/m32r/m32r.c (move_src_operand): Likewise.
	* config/mips/mips.c (mips_const_insns): Likewise.
	* config/mmix/mmix.c (mmix_constant_address_p): Likewise.
	* config/pa/pa.c (move_src_operand): Likewise.
	* config/rs6000/rs6000.c (input_operand): Likewise.
	* config/sparc/sparc.c (input_operand): Likewise.
	* config/v850/v850.c (movsi_source_operand): Likewise.
	* config/xtensa/xtensa.c (move_operand,
	xtensa_emit_move_sequence): Likewise.
	* config/ia64/ia64.h (PREDICATE_CODES): Do not mention CONSTANT_P_RTX.
	* config/pa/pa.h (PREDICATE_CODES): Likewise.

2004-03-16  Diego Novillo  <dnovillo@redhat.com>

	* tree-dump.c (struct dump_option_value_info): Add TDF_UID.
	* tree.h (TDF_UID): Define.
	* doc/invoke.texi: Document -ftree-dump-...-uid.
	* tree-pretty-print.c (debug_generic_expr): Add TDF_UID.
	(debug_generic_stmt): Likewise.
	(dump_decl_name): New function.
	(dump_generic_node): Call it.
	(print_declaration): Add new argument 'flags'.  Update all users.
	(print_struct_decl): Likewise.
	* tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
	tree-nrv.c, tree-sra.c, tree-ssa-alias.c, tree-ssa-ccp.c,
	tree-ssa-copy.c, tree-ssa-dom.c, tree-ssa-dse.c,
	tree-ssa-forwprop.c, tree-ssa-operands.c, tree-ssa-pre.c,
	tree-ssa.c, tree-tail-call.c: Call print_generic_* with
	'dump_flags'.

2004-03-16  Dale Johannesen  <dalej@apple.com>

	* Makefile.in (tree-ssa-phiopt.o): add langhooks.h dependency.
	(tree-nrv.o): Ditto.
	(tree-ssa-copy.o): Ditto.
	(tree-ssa-dom.o): Ditto.
	(tree-ssa-ccp.o): Ditto.
	* c-common.c: Add #include hashtab.h.
	(c_type_hash): New.
	(c_common_get_alias_set): Handle multiple type nodes referring
	to "the same" type, currently for C90 only.
	* c-decl.c (current_file_decl): Move to toplev.c.
	* c-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to
	c_types_compatible_p.
	(c_types_compatible_p): New.
	* c-tree.h (c_types_compatible_p): New declaration.
	* c-typeck.c (tagged_types_tu_compatible_p): Allow for
	compiler-generated TYPE_DECLs without a DECL_ORIGINAL_TYPE.
	* gimplify.c (canonicalize_addr_expr): Use types_compatible_p langhook.
	(cpt_same_type): Ditto.
	* langhooks-def.h (lhd_types_compatible_p): New declaration.
	LANG_HOOKS_TYPES_COMPATIBLE_P: New.
	* langhooks.c (lhd_types_compatible_p): New.
	* langhooks.h (struct lang_hooks): Add types_compatible_p.
	* stmt.c (tail_recursion_args): Use types_compatible_p langhook.
	* toplev.c (current_file_decl): New, moved from c-decl.c.
	* tree-nrv.c: Include langhooks.h.
	(tree_nrv): Use types_compatible_p langhook.
	* tree-ssa-ccp.c: Include langhooks.h.
	(maybe_fold_offset_to_array_ref): Use types_compatible_p langhook.
	(maybe_fold_offset_to_component_ref): Ditto (2 places).
	(fold_stmt_r): Make sure rhs of COMPONENT_REF is in lhs type.
	* tree-ssa-copy.c: Include langhooks.h.
	(cprop_into_stmt): Use types_compatible_p langhook.
	* tree-ssa-dom.c: Include langhooks.h.
	(avail_expr_p): Use types_compatible_p langhook.
	* tree-ssa-phiopt.c: Include langhooks.h.
	(conditional_replacement): Use types_compatible_p langhook.
	* tree-ssa.c (tree_ssa_useless_type_conversion_1): Use
	types_compatible_p langhook.
	* tree.h (current_file_decl): New declaration.

2004-03-16  Dale Johannesen  <dalej@apple.com>

	PR optimization/14498
	* gimplify.c (copy_if_shared_r): Mark VA_ARGS_EXPRs as volatile.
	(mark_decls_volatile_r): Moved higher in file (unchanged).

2004-03-16  Daniel Berlin  <dberlin@dberlin.org>

	PR optimization/14562
	* tree-ssa-pre.c (generate_expr_as_of_bb): Don't use names_match_p.
	(generate_vops_as_of_bb): Ditto.

2004-03-12  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14553
	* tree-ssa.c (replace_immediate_uses): Call propagate_value to
	update operands.

2004-03-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-alias-common.c (create_alias_vars): Add #if
	HAVE_BANSHEE around test for PTA_ANDERSEN.

2004-03-11  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (struct walk_state): Remove fields 'is_store' and
	'is_indirect_ref'.  Update all users.
	* tree-flow.h (struct var_ann_d): Remove fields 'is_stored',
	'is_dereferenced_store' and 'is_dereferenced_load'.  Update
	all users.
	* tree-simple.c (get_base_address): Handle BIT_FIELD_REF.
	* tree-ssa-alias.c (struct alias_info): Add fields
	'written_vars', 'dereferenced_ptrs_store' and
	'dereferenced_ptrs_load'.
	(init_alias_info): Initialize them.
	(delete_alias_info): Free them.
	(find_ptr_dereference): New.
	(ptr_is_dereferenced_by): Call it.
	Add new argument 'is_store'.  Set to true if the
	expression is an indirect store operation.
	(compute_points_to_and_addr_escape): If the statement
	makes a store, load or write operation, update the
	corresponding bitmap.
	(compute_flow_insensitive_aliasing): Test the
	'written_vars' bitmap to determine if alias sets should
	be computed.
	(setup_pointers_and_addressables): Always assume that
	volatile pointers and hidden pointers have been used in a
	memory store operation.
	* tree-ssa-operands.c (add_stmt_operand): Do add an
	operand for may-aliased variables before computing
	aliases.

2004-03-11  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-optimize.c (init_tree_optimization_passes): Move
	pass_tail_recursion and pass_ch after pass_may_alias.
	* tree-ssa-loop.c (mark_defs_for_rewrite): Mark type tags
	for rewriting.
	* tree-ssa.c (mark_def_sites): Process the operand of a
	VDEF before the result.

2004-03-11  Richard Henderson  <rth@redhat.com>

	PR 14204
	* tree-ssa.c (warn_uninit): Don't warn for hard register variables.

2004-03-10  Richard Henderson  <rth@redhat.com>

	* tree-simple.c (get_base_var, get_base_decl): Remove.
	* tree-simple.h: Likewise.
	* tree-dfa.c (discover_nonconstant_array_refs_r): Use get_base_address.
	* tree-ssa-alias.c (ptr_is_dereferenced_by): Likewise.
	(add_pointed_to_var, is_escape_site): Likewise.
	* tree-ssa-ccp.c (get_default_value): Expect only SSA_NAME and DECLs.
	* tree-ssa-operands.c (add_stmt_operand): Likewise.
	(note_addressable): Use get_base_address.
	* tree-ssa-dce.c (need_to_preserve_store): Expect only SSA_NAME.
	* tree-ssa.c (set_is_used): Inline get_base_decl.

2004-03-10  Richard Henderson  <rth@redhat.com>

	* tree-nested.c (convert_nonlocal_reference): Clear TREE_INVARIANT
	on modified ADDR_EXPRs.

2004-03-10  Andrew Pinski  <apinski@apple.com

	PR c/14475
	* c-decl.c (check_bitfield_type_and_width): Check for null
	lang_type_specific when check the precision of an enum.

2004-03-09  Andrew Pinski  <apinski@apple.com>

	* Makefile.in (tree-ssa-forwprop.o): Fix the dependences.

2004-03-09  Jeff Law  <law@redhat.com>

	* tree-flow-inline.h (may_propagate_copy): Do not allow propagation of
	a constant for a virtual operand.

2004-03-08  Richard Henderson <rth@redhat.com>

	* calls.c (initialize_argument_information): Add
	parameter may_tail_call.  Set to false for invisible
	pass-by-reference arguments that require stack
	allocation.
	Update all users.

2004-03-07  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c: (get_eq_expr_value): Fix typo when comparing a
	boolean against a constant.
	* tree-ssa-forwprop.c (record_single_argument_cond_exprs): Do not
	record the same SSA_NAME more than once.  Only record the SSA_NAME
	tested, not the COND_EXPR.
	(substitute_single_use_vars): Substitute booleans which are
	set from a TRUTH_NOT_EXPR even if they have more than one use site.

2004-03-05  Jeff Law  <law@redhat.com>

	* tree-ssa-dce.c (remove_dead_stmt): Clear PENDING_STMT after
	redirect_edge_and_branch call.

	* tree-ssa-forwprop.c (record_single_argument_cond_exprs): Also
	record COND_EXPRs with single use vars defined by SSA_NAME + CONST
	expressions.
	(substitute_single_use_vars): Corresponding changes to rewrite
	COND_EXPRs using single use vars defined by SSA_NAME + CONST
	expressions.

2004-03-05  Ulrich Weigand  <uweigand@de.ibm.com>

	* config/s390/s390.c (s390_expand_movstr): Do not use
	expand_exit_loop_top_cond, manually copy loop header.
	(s390_expand_clrstr): Likewise.
	(s390_expand_cmpmem): Likewise.

2004-03-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-alias.c (compute_flow_sensitive_aliasing): If
	a name tag has been marked call-clobbered, also mark the
	corresponding type tag.

2004-03-04  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-loop-live.c (coalesce_tpa_members): Update the root
	variable of the partition.

2004-03-04  Jeff Law  <law@redhat.com>

	* tree-ssa-dce.c (remove_dead_stmt): Redirect an existing edge
	rather than deleting the old ones and creating a new one when
	removing a dead conditional.

	* fold-const.c (fold): When rebuilding the expression after a
	call to fold_relational_hi_lo, make sure to convert the type of
	the second argument to the type of the first.

2004-03-04  Diego Novillo  <dnovillo@redhat.com>

	* cgraphunit.c (cgraph_optimize): Do not do memory release
	check if there have been errors.

2004-03-03  Jeff Law  <law@redhat.com>

	* tree-ssa-phiopt.c (conditional_replacement): Clear EDGE_TRUE_VALUE
	and EDGE_FALSE_VALUE on the remaining edge after eliminating a PHI.

2004-03-03  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-copyrename.c (gate_copyrename): Really check it in.
	* tree-ssa.c (create_temp): Use DECL_ARTIFICIAL from original decl.

2004-03-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c (struct tailcall): Remove return_block and return_bsi
	fields, add m and a fields.
	(m_acc, a_acc): New.
	(find_tail_calls): Find tail calls on whose results simple operations
	are performed.
	(independent_on_stmt_p, process_assignment,
	propagate_through_phis, adjust_accumulator_values,
	adjust_return_value): New.
	(eliminate_tail_call): Update the accumulators if needed.
	(optimize_tail_call): Do not create phis.
	(tree_optimize_tail_calls): Create phis and accumulators as needed.
	Adjust return values.

2004-03-02  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-operands.c (get_expr_operands): Mark CALL_EXPRs
	with has_volatile_ops if aliases haven't been computed yet.
	(add_stmt_operand): Use 'true' instead of '1'.

2004-03-02  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14266
	* tree-ssa-alias.c (create_global_var): Mark GLOBAL_VAR for
	renaming.

2004-03-01  Richard Henderson  <rth@redhat.com>

	* tree.c (associative_tree_code): Remove MINUS_EXPR, LSHIFT_EXPR,
	RSHIFT_EXPR.
	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Use
	is_gimple_min_invariant and is_gimple_var.  Handle minus_expr
	specially.

2004-03-01  Richard Henderson  <rth@redhat.com>

	* cfgbuild.c (rtl_make_eh_edge): Rename from make_eh_edge.
	* basic-block.h, except.c: Update decl and uses.

2004-03-01  Frank Ch. Eigler  <fche@redhat.com>

	* doc/passes.texi: Add information about mudflap.

2004-03-01  Andrew Pinski  <pinskia@physics.uc.edu>

	PR middle-end/13066
	* fold-const (fold): Call fold_convert when building
	a TRUTH_*_EXPR tree.

2004-03-01  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt : Add tree-copyrename option. Remove duplicate tree-sra.
	* flags.h (flag_tree_copyrename): Declare.
	* opts.c (decode_options): Turn copyrename on by default at -O.
	(common_handle_option): Handle -ftree-copyrename.
	* toplev.c (flag_tree_copyrename): Declare.
	* tree-ssa-copyrename.c (gate_copyrename): New.  Check flag.
	(pass_rename_ssa_copies): Initialize with gated routine.
	(lang_independent_options f_): Add tree-copyrename.
	* doc/invoke.texi: Add -fdump-tree-copyrename and  -ftree-copyrename.
	* doc/passes.texi: Add blurb for copy renaming.

2004-03-01  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (true_false_expr_hash): Update comments slightly.
	(true_false_expr_eq): Update comments slightly.  Avoid using
	operand_equal_p, instead check the code and operands directly.

2004-03-01  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in (tree-ssa-copyrename.o): New object.
	* timevar.def (TV_TREE_COPY_RENAME): New time variable.
	* tree-optimize.c (init_tree_optimization_passes): Add copy rename
	pass.
	* tree-pass.h (pass_rename_ssa_copies): New pass structure.
	* tree-sra.c (lookup_scalar): Copy DECL_ARITIFICIAL flag from base.
	* tree-ssa-copyrename.c : New file.
	(copy_rename_partition_coalesce): Coalesce partitions for renaming.
	(rename_ssa_copies): Find renamable copies.
	(pass_rename_ssa_copies): Initialize.
	* tree-ssa-live.c (register_ssa_partition): Move to tree-ssa-live.h.
	* tree-ssa-live.h (register_ssa_partition): Moved from tree-ssa-live.c.

2004-02-29  David Edelsohn  <edelsohn@gnu.org>

	* doloop.c (doloop_optimize): Increment n_iterations if loop->top
	present.

2004-02-29  Diego Novillo  <dnovillo@redhat.com>

	* gimple-low.c (pass_remove_useless_vars): Add TODO_dump_func.

2004-02-27  Richard Henderson  <rth@redhat.com>

	PR middle-end/14310
	* explow.c (emit_stack_save): Remove savearea mode check.

2004-02-27  Richard Henderson  <rth@redhat.com>

	* builtins.c (simplify_builtin_strcmp): Don't export.  Remove
	length parameters.  Remove conversion to memcmp.
	(simplify_builtin_strncmp): Likewise.
	* expr.h: Don't declare them.
	* tree-ssa-ccp.c (ccp_fold_builtin): Don't call them.

2004-02-27  Dale Johannesen  <dalej@apple.com>

	* tree-cfg.c (cleanup_control_expr_graph): Prevent edge
	probability from overflowing due to roundoff errors.

2004-02-27  Jeff Law  <law@redhat.com>

	* tree-cfg.c (verify_expr): Do not walk down into types.
	Expand checking to verify that unary/binary operators have
	gimple operands.
	* tree-ssa-ccp.c (ccp_fold_builtin, case BUILT_IN_STRLEN): Do not
	create non-gimple code.  Similarly for BUILTIN_IN_STRCPY and
	BUILT_IN_STRNCPY.
	* tree-ssa-phiopt.c (conditional_replacement): Do not create
	non-gimple code.
	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.

	* tree-simple.c (is_gimple_min_invariant): Subtraction of a
	constant from a constant pointer is a gimple invariant as well.
	* tree-ssa-operands.c (get_expr_operands): Handle subtraction
	of a constant from a constant pointer too.

	* fold-const.c (fold): Tighten test for optimizing an equality
	comparison of the address of two variables.

	* tree-inline.c (setup_one_parameter): Improve test for when we
	need to gimplify the initialization statements.

2004-02-27  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14312
	* tree-pretty-print.c (dump_generic_node): Mark tail calls.
	* tree-ssa-alias.c (compute_may_aliases): Restore call to
	dump_referenced_vars.
	(compute_points_to_and_addr_escape): If the address of a
	variable V is stored into a non-pointer variable, mark V as
	call-clobbered.
	* tree-tailcall.c (suitable_for_tail_opt_p): Check for
	call-clobbered instead of TREE_ADDRESSABLE.
	Ignore memory tags.
	(optimize_tail_call): Add newline to dump output.

2004-02-27  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/13347
	* tree-sra.c (scalarize_structure_assignment): Use STRIP_NOPS
	instead of STRIP_USELESS_TYPE_CONVERSION to remove type casts
	from RHS of the assignment.

	* tree-ssa.c (tree_ssa_useless_type_conversion_1): Reformat
	and rephrase comments.
	* tree.h (STRIP_USELESS_TYPE_CONVERSION): Reformat comment.

2004-02-26  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_redirect_edge_and_branch_1): Allow to redirect
	RETURN_EXPR branches.

2004-02-26  Jeff Law  <law@redhat.com>

	* tree-nrv.c (tree_nrv): Only perform NRV optimization when the
	return value lives in memory.

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): If an
	operand is unsigned, then we can eliminate more ABS expressions
	and turned div/mod expression into shift/and expressions.

	* fold-const.c (fold): An equality comparison of the address of
	two non-weak variables has known compile-time result.

2004-02-26  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa-phiopt.c (conditional_replacement):
	s/tree_dump_flags/dump_flags/.

	* tree-ssa-phiopt.c (tree_ssa_phiopt): Split into ...
	(conditional_replacement): Here.

2004-02-26  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (find_replaceable_in_bb): Don't repalce expressions in
	volatile statements.

2004-02-25  Richard Henderson  <rth@redhat.com>

	PR opt/14288
	* gimplify.c (gimple_push_cleanup): Add VAR argument.  Set
	TREE_NO_WARNING if in a conditional context.
	(gimplify_target_expr): Pass new argument.
	* tree-sra.c (lookup_scalar): Copy TREE_NO_WARNING to replacement.

2004-02-24  Kazu Hirata  <kazu@cs.umass.edu>

	* doc/invoke.texi: Replace -fdump-tree-all-ssa with
	-fdump-tree-all.

2004-02-24  Kazu Hirata  <kazu@cs.umass.edu>

	PR target/14285
	* config/arm/arm.c (arm_compute_func_type): Replace
	"current_function_needs_context" with "cfun->static_chain_decl
	!= NULL".
	(arm_compute_initial_elimination_offset): Likewise.
	* config/h8300/h8300.c (h8300_emit_stack_adjustment):
	Likewise.
	* config/sh/sh.c (output_stack_adjust): Likewise.
	(sh5_schedule_saves): Likewise.
	* config/xtensa/xtensa.c (compute_frame_size): Likewise.

2004-02-24  Richard Henderson  <rth@redhat.com>

	* c-simplify.c (c_genericize): s/dump_flags/local_dump_flags/.
	* predict.c, tree-alias-ander.c, tree-cfg.c, tree-nrv.c,
	tree-optimize.c, tree-pass.h, tree-sra.c, tree-ssa-alias.c,
	tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c, tree-ssa-dom.c,
	tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
	tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c:
	s/tree_dump_flags/dump_flags/.

2004-02-24  Richard Henderson  <rth@redhat.com>

	* predict.c, tree-alias-ander.c, tree-cfg.c, tree-mudflap.c,
	tree-nrv.c, tree-optimize.c, tree-pass.h, tree-profile.c, tree-sra.c,
	tree-ssa-alias.c, tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c,
	tree-ssa-dom.c, tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
	tree-ssa-operands.c, tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c,
	tree-tailcall.c: s/tree_dump_file/dump_file/g.

2004-02-24  Diego Novillo  <dnovillo@redhat.com>

	* doc/tree-ssa.texi: Fix formatting mark ups.

2004-02-24  Jeff Law  <law@redhat.com>

	* gimple-low.c (remove_useless_vars): Now static.
	(pass_remove_useless_vars): New.
	* tree-flow.h (remove_useless_vars): Remove prototype.
	* tree-nrv.c (struct nrv_data): Remove visited hashtable.
	(finalize_nrv_r): Do not descend into types. No need to update
	the visited hashtable.
	(tree_nrv): No need to allocate/free the visited hashtable.
	Clear the used flag on the variable's annotation.
	* tree-optimize.c (init_tree_optimizatio_passes): Link in
	pass_remove_useless_vars.
	* tree-pass.h (pass_remove_useless_vars): Declare.
	* tree-ssa.c (rewrite_out_of_ssa): Do not remove useless vars here.

	* Makefile.in (OBJS-common): Add tree-nrv.o.
	(tree-nrv.o): Add dependencies.
	* timevar.def (TV_TREE_NRV): New timevar.
	* tree-nrv.c: New file implementing NRV on generic trees.
	* tree-optimize.c (init_tree_optimization_passes): Link in
	tree_nrv optimization pass.
	* tree-pass.h (tree_nrv): Declare.
	* doc/invoke.texi: Add -fdump-tree-nrv documentation.

2004-02-24  Sebastian Pop  <sebastian.pop@cri.ensmp.fr>

	* tree-flow.h (walk_use_def_chains_fn): Return a boolean.
	True for stopping the use-def walk, false otherwise.
	* tree-ssa-alias.c (collect_points_to_info_r): Same.
	Always return false, and never stopping the def-use walk as before.
	* tree-ssa.c (walk_use_def_chains_1): Stop when the result of the
	callback function is true.
	* doc/tree-ssa.texi: Document the behavior of the callback
	function for walk_use_def_chains.

2004-02-24  Richard Henderson  <rth@redhat.com>

	* doc/passes.texi: Rewrite.

2004-02-23  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TEXI_GCCINT_FILES): Add cfg.texi and tree-ssa.texi
	* tree-ssa-alias.c (compute_may_aliases): Update documentation.
	* doc/gccint.texi: Add node for Tree SSA documentation.
	Include tree-ssa.texi.
	* doc/tree-ssa.texi: New file.

2004-02-23  Dale Johannesen <dalej@apple.com>

	* config/rs6000/rs6000.md:  Roll in changes from mainline:
	(movdf_softfloat64):  Add POWER form of nop.
	(movsf_hardfloat): Ditto, and accept CTR-to-CTR copy.
	(movdf_hardfloat64):  Ditto.

2004-02-23  Jeff Law  <law@redhat.com>

	* ggc-page.c (struct page_entry): New field PREV.
	(ggc_alloc): Update PREV field appropriately.
	(sweep_pages): Likewise.
	(ggc_free): Likewise.  Use PREV field rather than loop to
	improve ggc_free performance.

	* Makefile.in (OBJC-common): Add tree-ssa-copy.o.
	(tree-ssa-copy.o): Add dependencies.
	* tree-flow.h (propagate_value, replace_exp): Prototype.
	(cprop_into_stmt, cprop_into_successor_phis): Likewise.
	* tree-ssa-copy.c: New file, most functions copied from tree-ssa-dom.c
	(cprop_into_stmt): Handle pointer & reference types better.
	* tree-ssa-dom.c (opt_stats_d): Kill uninteresting stats.
	(dump_dominator_optimization_stats): Corresponding changes.
	(cprop_into_stmt): Moved into tree-ssa-copy.c.
	(propagate_value): Likewise.
	(cprop_into_phis): Simplify using code fromi tree-ssa-copy.c.
	(optimize_stmt): Pass additional argument to cprop_into_stmt.
	* tree-ssa-pre.c (generate_expr_as_of_bb): Use replace_exp.
	(generate_vops_as_of_bb): Similarly.

2004-02-21  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (decide_is_function_needed): Nested functions of extern
	inline functions don't need to be output.
	(expand_function): Re-enable sanity check.

2004-02-21  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-loop.c (do_while_loop_p): New function.
	(copy_loop_headers): Do not peel do-while loops.

2004-02-21  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (cleanup_control_expr_graph): Update profile.

	* tree-cfg.c (disband_implicit_edges): Set fallthru edges correctly.

	* cfg.c (dump_flow_info): Work on trees too.

	* tree-pretty-print.c (dump_generic_bb_stuff):  Do not touch bb
	annotations when not allocated.

2004-02-21  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_stmt): Look at the type's main variant
	to determine if the two operands of a copy have equivalent types.

2004-02-20  Jeff Law  <law@redhat.com>

	* tree-flow-inline.h (may_propagate_copy): Do not perform ABNORMAL_PHI
	and DECL_HARD_REGISTER tests on virtual operands.
	* tree-flow.h (propagate_copy): Kill prototype.
	(propagate_value): New prototype.
	* tree-ssa-dom.c (propagate_copy): Now static.
	(propagate_value): No longer static.

2004-02-20  Richard Henderson  <rth@redhat.com>

	PR middle-end/14218
	* c-simplify.c (mark_labels_r): Move to ...
	* gimplify.c (force_labels_r): ... here, and rename.
	(gimplify_init_constructor): Invoke it.
	* tree-simple.h (force_labels_r): Declare.

2004-02-20  Richard Henderson  <rth@redhat.com>

	PR opt/14194
	* tree-ssa-ccp.c (substitute_and_fold): Also mark new vars
	if fold_stmt was successful.

2004-02-20  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Add documentation for parameters
	global-var-threshold and max-aliased-vops.
	* params.def (PARAM_GLOBAL_VAR_THRESHOLD): Reformat help message.
	(PARAM_MAX_ALIASED_VOPS): Rename from PARAM_MAX_ALIAS_SET_SIZE.
	* params.h (MAX_ALIASED_VOPS): Rename from MAX_ALIAS_SET_SIZE.
	Update all users.
	* tree-ssa-alias.c (struct alias_map_d): Document fields.
	Add fields total_alias_vops, grouped_p and may_aliases.
	(struct alias_info): Change fields addressable_vars and
	pointers to malloc'd arrays.  Update all users.
	Add fields num_references and total_alias_vops.
	(compute_may_aliases): Add more comments.
	(init_alias_info): Initialize new fields in struct alias_info.
	(delete_alias_info): Corresponding changes.
	(compute_points_to_and_addr_escape): Count references to
	potentially aliased variables and pointer dereferences.
	(compute_flow_insensitive_aliasing): Remove old grouping
	heuristic.
	Count the number of virtual operands induced by all the alias
	sets created and call group_aliases if the number exceeds the
	threshold set by --param max-aliased-vops.
	(total_alias_vops_cmp): New.
	(group_aliases_into): New.
	(group_aliases): New.
	* tree-ssa-operands.c (get_expr_operands): Change dump file
	message when no flow-sensitive alias information is available.
	(add_stmt_operand): Reformat comment.
	* tree-ssa.c (init_tree_ssa): Don't call bitmap_clear.

	* tree-simple.c (get_base_decl): Fix typo in comment.

	* tree-pretty-print.c (print_call_name): Handle matrices of
	function pointers.

2004-02-20  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-ssa-loop.o): Add tree-inline.h dependency.
	* basic-block.h (struct reorder_block_def): Moved from cfglayout.h.
	(alloc_rbi_pool, initialize_bb_rbi, free_rbi_pool): New.
	* bb-reorder.c (copy_bb): Use cfghooks for bb duplication.
	* cfg.c (rbi_pool): New variable.
	(alloc_rbi_pool, free_rbi_pool, initialize_bb_rbi): New functions.
	* cfghooks.c (can_duplicate_block_p, duplicate_block): New functions.
	* cfghooks.h (struct cfg_hooks): Add can_duplicate_block_p and
	duplicate_block hooks.
	(can_duplicate_block_p, duplicate_block): Declare.
	* cfglayout.c (cfg_layout_pool, cfg_layout_initialize_rbi): Removed.
	(fixup_reorder_chain): Use initialize_bb_rbi.
	(cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Hookized.
	(cfg_layout_initialize): Use cfg.c rbi pool manipulation functions.
	(can_copy_bbs_p, copy_bbs): Use cfghooks for bb duplication.
	* cfglayout.h (typedef struct reorder_block_def): Moved to
	basic_block.h.
	(cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Declaration
	removed.
	* cfgrtl.c (cfg_layout_create_basic_block): Use initialize_bb_rbi.
	(rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Fill in can_duplicate_block_p
	and duplicate_block fields.
	* common.opt (ftree-ch): Add.
	* flags.h (flag_tree_ch): Declare.
	* jump.c (next_nonnote_insn_in_loop, duplicate_loop_exit_test,
	copy_loop_headers): Removed.
	* loop-unswitch.c (unswitch_loop): Use cfghooks for bb duplication.
	* opts.c (decode_options): Enable flag_tree_ch at -O1.
	(common_handle_option): Handle -ftree_ch.
	* rtl.h (copy_loop_headers): Declaration removed.
	* timevar.def (TV_TREE_CH): New.
	* toplev.c (flag_tree_ch): New.
	(rest_of_compilation): Do not call copy_loop_headers.
	* tracer.c (tail_duplicate): Use cfghooks for bb duplication.
	* tree-cfg.c (build_tree_cfg): Call alloc_rbi_pool.
	(create_bb): Call initialize_bb_rbi.
	(delete_tree_cfg): Call free_rbi_pool.
	(tree_duplicate_bb): Hookize.
	(tree_can_duplicate_bb_p): New.
	(tree_cfg_hooks): Fill in can_duplicate_block_p and duplicate_block
	fields.
	* tree-flow.h (tree_duplicate_bb): Declaration removed.
	* tree-optimize.c (init_tree_optimization_passes): Add pass_ch.
	* tree-pass.h (pass_ch): Declare.
	* tree-ssa-loop.c: Include tree-inline.h.
	(call_expr_p, should_duplicate_loop_header_p, mark_defs_for_rewrite,
	duplicate_blocks, copy_loop_headers, gate_ch): New functions.
	(pass_ch): New.
	* doc/invoke.texi (-fdump-tree-ch, -ftree-ch): Document.

2004-02-19  David Edelsohn  <edelsohn@gnu.org>

	* config/rs6000/aix.h (MFWRAP_SPEC): Define.
	(MFLIB_SPEC): Define.

2004-02-19  Jeff Law  <law@redhat.com>

	* tree-ssa-phiopt.c (tree_ssa_phiopt): TRUTH_NOT_EXPR is valid
	gimple code.

2004-02-19  Steven Bosscher  <stevenb@suse.de>

	* tree-cfg.c (cleanup_dead_labels): New function to remove
	redundant labels.

	Remove the RTL inliner.
	* calls.c (try_to_integrate): Remove.
	(expand_call): Do not try to expand calls inline.
	* dbxout.c (dbxout_symbol_location): Don't mention integrate.c
	in comments.
	* expmed.c (extract_fixed_bit_field): Always propagate the
	target for the shift if it is a REG.
	* expr.c (emit_move_insn_1): Don't generate inline warnings.
	(expand_expr_real_1): Don't look at inline_function_decl.
	Don't output inlined functions here.
	* expr.h (expand_inline_function): Remove prototype.
	* emit-rtl.c (copy_most_rtx): Don't copy the integrated flag.
	Copy the new return_val flag.
	* final.c (final): Don't look at RTX_INTEGRATED_P.
	* cfgrtl.c (create_basic_block_structure): Likewise.
	* haifa-sched.c (priority): Likewise.
	(restore_line_notes): Likewise.
	* function.c (inline_function_decl): Remove.
	(put_var_into_stack): Don't use it.
	(fix_lexical_addr): Likewise.
	* function.c (inline_function_decl): Remove extern declaration.
	* genattrtab.c (ATTR_PERMANENT_P): Use the return_val flag
	instead of the integrated flag.
	* integrate.c (INTEGRATE_THRESHOLD): Remove.
	(setup_initial_hard_reg_value_integration): Likewise.
	(initialize_for_inline): Likewise.
	(note_modified_parmregs): Likewise.
	(integrate_parm_decls): Likewise.
	(process_reg_param): Likewise.
	(save_parm_insns): Likewise.
	(copy_insn_list): Likewise.
	(copy_insn_notes): Likewise.
	(compare_blocks): Likewise.
	(find_block): Likewise.
	(inlining): Likewise.
	(function_cannot_inline_p): Likewise.
	(parmdecl_map): Likewise.
	(in_nonparam_insns): Likewise.
	(save_for_inline): Likewise.
	(FIXED_BASE_PLUS): Likewise.
	(expand_inline_function): Likewise.
	(copy_rtx_and_substitute): Don't look at map->integrating,
	map->inline_target, and inlining, since we are never copying
	for integrating.
	Don't abort on RTX_INTEGRATED_P.
	(old_fun): Remove.
	(output_inline_function): Remove.
	* integrate.h (struct inline_map): Remove fields integrating,
	block_map, leaf_reg_map, inline_target, and local_return_label.
	* print-rtl.c (print_rtx): Don't print the integrated flag.
	Print the return_val flag.
	* rtl.h (struct rtx_def): Replace the integrated flag with the
	return_val flag.
	(RTX_INTEGRATED_P): Remove.
	(notice_rtl_inlining_of_deferred_constant): Remove prototype.
	* stmt.c (force_label_rtx): Don't look at inline_function_decl.
	* toplev.c (rest_of_handle_inlining): Remove.
	(rest_of_compilation): Don't call it, and never jump to exit.
	Call convert_from_eh_region_ranges.
	(wrapup_global_declarations): Don't output nested inlined functions.
	* tree.h (function_cannot_inline_p): Remove prototype.
	(save_for_inline): Ditto.
	(output_inline_function): Ditto.
	* unroll.c (unroll_loop): Don't clear map->inline_target.
	* varasm.c (notice_rtl_inlining_of_deferred_constant): Remove.

	* system.h: Poison INTEGRATE_THRESHOLD.
	* config/avr/avr.h: Remove define.
	* config/ip2k/ip2k.h: Likewise.

	* unwind-sjlj.c (uw_install_context): Make a proper static inline
	function.

	* doc/rtl.texi: Remove references to the integrated flag.
	* doc/tm.texi: Remove documentation of INTEGRATE_THRESHOLD.

2004-02-17  Andrew Macleod  <amacleod@redhat.com>

	* tree-ssa-live.c (coalesce_tpa_members): Don't coalesce partitions
	which are not in the same TPA group.
	* tree-ssa.c (rewrite_out_of_ssa): Coalesce via list first.

2004-02-17  Brian Booth  <bbooth@redhat.com>

	* tree-ssa-ccp.c (substitute_and_fold): Update stmt after
	calling fold_stmt.

2004-02-16  Andrew Pinski  <pinskia@physics.uc.edu>

	* config/rs6000/rs6000.c (output_function_profiler): Check
	cfun->static_chain_decl instead of current_function_needs_context.

2004-02-16  Jeff Law  <law@redhat.com>

	* tree-ssa.dse.c (dse_optimize_stmt): Dump info when we delete
	stores.

	* tree-ssa-dse.c: Update comments.

	* Makefile.in (OBJS-common): Add tree-ssa-dse.o
	(tree-ssa-dse.o): Add dependencies.
	* common.opt (ftree-dse): New option.
	* flags.h (flag_tree_dse): New.
	(flag_tree_dom): Fix comments.
	* opts.c (decode_options): Turn on flag_tree_dse.
	(common_handle_option): Handle  OPT_ftree_dse.
	* timevar.def (TV_TREE_PHIOPT): Update text.
	(TV_TREE_DSE): New timevar.
	* toplev.c (flag_tree_dse): New.
	(flag_tree_dom): Fix comments.
	(lang_independent_options): Add -ftree-dse.
	* tree-dfa.c (redirect_immediate_use): New function.
	(redirect_immediate_uses): New function.
	* tree-flow.h (stmt_ann_d): Add UID field.
	(redirect_immediate_uses): Declare.
	* tree-optimize.c (init_tree_optimization_passes): Link in DSE pass.
	* tree-pass.h (pass_dse): Declare.
	* tree-ssa-dse.c: New file implementing DSE.
	* doc/invoke.texi: Document new option.

2004-02-16  Richard Henderson  <rth@redhat.com>

	* tree-nested.c: New file.
	* Makefile.in (OBJS-common, GTFILES, tree-nested.o): Add it.
	* builtin-types.def (BT_FN_VOID_PTR_PTR, BT_FN_VOID_PTR_PTR_PTR): New.
	* builtins.c (expand_builtin_nonlocal_goto): New.
	(expand_builtin_apply): Fix prepare_call_address args.
	(round_trampoline_addr): Move from function.c.
	(expand_builtin_init_trampoline): New.
	(expand_builtin_adjust_trampoline): New.
	(expand_builtin): Invoke them.
	(build_function_call_expr): Add CALL_EXPR chain operand.
	* builtins.def (BUILT_IN_INIT_TRAMPOLINE,
	BUILT_IN_ADJUST_TRAMPOLINE, BUILT_IN_NONLOCAL_GOTO): New.
	* c-decl.c (finish_function): Call lower_nested_functions.
	(c_expand_decl): Don't declare_nonlocal_label.
	* calls.c (prepare_call_address): Replace fndecl arg with a
	precomputed static chain value.
	(expand_call): Precompute the static chain value.  Use
	update_nonlocal_goto_save_area.
	* cgraph.c (cgraph_mark_reachable_node): Don't force nested
	functions to be reachable.
	(cgraph_clone_node): Don't abort cloning functions containing
	nested functions.
	* cgraphunit.c (cgraph_assemble_pending_functions): Don't do
	anything special for nested functions.
	(cgraph_mark_functions_to_output): Likewise.
	(cgraph_estimate_growth, cgraph_clone_inlined_nodes): Likewise.
	(cgraph_optimize): Likewise.
	(cgraph_finalize_function): Don't zap DECL_SAVED_INSNS.
	(cgraph_expand_function): Allow functions to not be emitted.
	* defaults.h (TRAMPOLINE_ALIGNMENT): Move from function.c.
	* dwarf2out.c (gen_subprogram_die): Generate DW_AT_static_link.
	* emit-rtl.c (maybe_set_first_label_num): New.
	* explow.c (update_nonlocal_goto_save_area): New.
	(allocate_dynamic_stack_space): Use it.
	* expr.c (expand_expr_real_1) <LABEL_DECL>: Don't force_label_rtx.
	<COND_EXPR>: Ignore the possibility of non-local labels.
	<ADDR_EXPR>: Don't do trampoline_address.
	* expr.h (lookup_static_chain): Remove.
	(prepare_call_address): Update 2nd arg.
	(update_nonlocal_goto_save_area): Declare.
	* final.c (profile_function): Update static chain test.
	* function.c (TRAMPOLINE_ALIGNMENT): Move to defaults.h.
	(trampolines_created): Move to varasm.c.
	(free_after_compilation): Update for removed fields.
	(allocate_struct_function): Likewise.
	(delete_handlers, lookup_static_chain): Remove.
	(fix_lexical_addr): Don't consider non-local variable refs.
	(trampoline_address): Remove.
	(round_trampoline_addr): Move to builtins.c.
	(adjust_trampoline_addr): Remove.
	(expand_function_start): Update for changes to static chain
	and nonlocal goto handling.
	(initial_trampoline): Move to varasm.c.
	(expand_function_end): Don't build trampolines or kill
	unreferenced nonlocal goto labels.
	* function.h (struct function): Remove x_nonlocal_labels,
	x_nonlocal_goto_handler_slots, x_nonlocal_goto_stack_level,
	x_context_display, x_trampoline_list, needs_context.
	Add static_chain_decl, nonlocal_goto_save_area.
	* gimple-low.c (record_vars): Don't record functions.
	* gimplify.c (declare_tmp_vars): Export.
	(create_artificial_label): Set type.
	(gimplify_expr): Don't consider nonlocal gotos.
	* integrate.c (expand_inline_function): Kill lookup_static_chain ref.
	* jump.c (any_uncondjump_p): Reject nonlocal goto.
	* rtl.h (maybe_set_first_label_num): Declare.
	* stmt.c (label_rtx): Set LABEL_PRESERVE_P appropriately.
	(expand_label): Handle DECL_NONLOCAL and FORCED_LABEL.
	(declare_nonlocal_label): Remove.
	(expand_goto): Don't handle nonlocal gotos.
	(expand_nl_handler_label): Remove.
	(expand_nl_goto_receivers): Remove.
	(expand_end_bindings): Don't expand_nl_goto_receivers.  Use
	update_nonlocal_goto_save_area.
	* tree-cfg.c (make_edges): Handle abnormal edges out of block
	falling through to EXIT.
	(make_ctrl_stmt_edges): Don't check GOTO_EXPR for nonlocal goto.
	Handle computed goto with no destinations.
	(tree_can_merge_blocks_p): Don't merge blocks with nonlocal labels.
	(remove_useless_stmts_label, stmt_starts_bb_p): Likewise.
	(tree_forwarder_block_p): Likewise.
	(nonlocal_goto_p): Remove.
	(tree_verify_flow_info): Update to match.
	* tree-dump.c (dump_files): Add tree-nested.
	* tree-flow.h (nonlocal_goto_p): Remove.
	* tree-inline.c (setup_one_parameter): Split out from ...
	(initialize_inlined_parameters): ... here.  Handle static chain.
	(inline_forbidden_p_1): Update nonlocal goto check.
	(expand_call_inline): Disable mysterious cgraph abort.
	* tree-optimize.c (tree_rest_of_compilation): Save DECL_SAVED_INSNS.
	* tree-pretty-print.c (dump_generic_node): Print static chain
	and nonlocal label.
	* tree-simple.h (declare_tmp_vars): Declare.
	(lower_nested_functions): Declare.
	* tree-ssa-dom.c (propagate_value): Avoid sharing problems.
	* tree-ssa-operands.c (get_expr_operands): Walk static chain
	field of call_expr.
	* tree.def (CALL_EXPR): Add static chain operand.
	* tree.h (NONLOCAL_LABEL): Remove.
	(TDI_nested): New.
	* varasm.c (TRAMPOLINE_ALIGNMENT): Remove.
	(initial_trampoline): Move from function.c.
	(assemble_trampoline_template): Set and return it.
	(trampolines_created): Move from function.c.

2004-02-16  Steven Bosscher  <stevenb@suse.de>

	* tree-flow.h (cleanup_control_expr_graph): Don't declare here.
	* tree-cfg.c (cleanup_control_expr_graph): Make static.
	(find_edge_taken_cond_expr): Return an edge if the true and false
	edges of a branch lead to the same basic block.

2004-02-13  Diego Novillo  <dnovillo@redhat.com>

	* tree-phinodes.c (resize_phi_node): Do not use ggc_realloc to
	allocate a new PHI node.

2004-02-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow.h (kill_redundant_phi_nodes): Remove declaration.
	* tree-optimize.c (init_tree_optimization_passes): Add
	pass_redundant_phi after DOM and CCP.
	(execute_todo): Do not call kill_redundant_phi_nodes.
	* tree-pass.h (TODO_redundant_phi): Remove.
	Update all users.
	Adjust values for all the other TODO_* entries.
	(pass_redundant_phi): Declare.
	* tree-ssa.c (replace_immediate_uses): Call mark_new_vars_to_rename
	if a pointer was replaced.
	(kill_redundant_phi_nodes): Make static.
	(pass_redundant_phi): Define.

2004-02-12  Dale Johannesen  <dalej@apple.com>

	* Makefile.in (OBJS-common): Add rtl-profile.o, tree-profile.o.
	(profile.o): Add tree-flow.h dependency.
	(rtl-profile.o): New rule.
	(tree-profile.o): New rule.
	(GTFILES): Add tree-profile.c, rtl-profile.c.
	* basic-block.h (flow_call_edges_add): Remove.
	* cfganal.c (need_fake_edge_p): Move to cfgrtl.c.
	(flow_call_edges_add): Move to cfgrtl.c.
	* cfghooks.c: (block_ends_with_call_p): New.
	(block_ends_with_condjump_p): New.
	(flow_call_edges_add): New.
	* cfghooks.h: (struct cfg_hooks): add block_ends_with_call_p,
	block_ends_with_condjump_p, flow_call_edges_add.
	(block_ends_with_call_p): New declaration.
	(block_ends_with_condjump_p): New declaration.
	(flow_call_edges_add): New declaration.
	* cfgrtl.c (rtl_block_ends_with_call_p): New.
	(rtl_block_ends_with_condjump_p): New.
	(need_fake_edge_p): Moved from cfganal.c.
	(rtl_flow_call_edges_add): Moved from cfganal.c (flow_call_edges_add).
	(rtl_cfg_hooks): Add rtl_block_ends_with_call_p,
	rtl_block_ends_with_condjump_p, rtl_flow_call_edges_add.
	(cfg_layout_rtl_cfg_hooks): Ditto.
	* common.opt (ftree-based-profiling): New.
	* coverage.c (tree_ctr_tables): New.
	(coverage_counter_alloc): Use it.
	(build_ctr_info_value): Ditto.
	(coverage_counter_ref): Ditto.  Rename to rtl_coverage_counter_ref.
	(tree_coverage_counter_ref): New.
	* coverage.h (coverage_counter_ref): Remove declaration.
	(rtl_coverage_counter_ref): New declaration.
	(tree_coverage_counter_ref): New declaration.
	* opts.c (OPT_ftree_based_profiling): New.
	* profile.c: Include cfghooks.h, tree-flow.h.
	(profile_hooks): New.
	(profile_dump_file): New.
	(instrument_edges): Use hooks instead of RTL-specific code.
	(instrument_values): Ditto.
	(get_exec_counts): Ditto.
	(compute_branch_probabilities): Ditto.
	(compute_value_histograms): Ditto.
	(branch_prob): Ditto.
	(find_spanning_tree): Ditto.
	(end_branch_prob): Ditto.
	(gen_edge_profiler): Move to rtl-profile.c (rtl_gen_edge_profiler).
	(gen_interval_profiler): Ditto (rtl_gen_interval_profiler).
	(gen_pow2_profiler): Ditto (rtl_gen_pow2_profiler).
	(gen_one_value_profiler): Ditto (rtl_gen_one_value_profiler).
	(tree_register_profile_hooks): New.
	(rtl_register_profile_hooks): New.
	* rtl-profile.c: New file.
	* rtl.h (init_branch_prob): Move declaration to value-prof.h.
	(end_branch_prob): Ditto.
	(branch_prob): Ditto.
	* toplev.c (flag_tree_based_profiling): New.
	(f_options): Add -ftree-based-profiling.
	(compile_file): Register rtl-based CFG and profiling hooks.
	(rest_of_compilation): Do rtl-based profiling only when
	!flag_tree_based_profiling.  Register rtl-based profiling hooks.
	(process_options): Sorry for -ftree-based-profiling plus
	-ftest-coverage or -fprofile-values.
	* toplev.h (flag_tree_based_profiling): New.
	* tree-cfg.c (tree_block_ends_with_call_p): New.
	(tree_block_ends_with_condjump_p): New.
	(need_fake_edge_p): New.
	(tree_flow_call_edges_add): New (largely from flow_call_edges_add
	in cfganal.c).
	(tree_cfg_hooks): Add tree_block_ends_with_call_p,
	tree_block_ends_with_condjump_p, tree_flow_call_edges_add.
	* tree-optimize.c (init_tree_optimization_passes):
	Add pass_tree_profile.
	* tree-pass.h: Ditto.
	* tree-profile.c: New file.
	* value-prof.c (value_prof_hooks): New.
	(find_values_to_profile): Rename to rtl_find_values_to_profile.
	Move rtl-specific bits in from branch_prob.
	(value_profile_transformations): Rename to
	rtl_value_profile_transformations.
	(struct value_prof_hooks): New.
	(rtl_value_prof_hooks): New.
	(rtl_register_value_prof_hooks): New.
	(tree_find_values_to_profile): New stub.
	(tree_value_profile_transformations): New stub.
	(tree_value_prof_hooks): New stub.
	(tree_register_value_prof_hooks): New stub.
	(find_values_to_profile): New.
	(value_profile_transformations): New.
	* value-prof.h: Add multiple inclusion guard.
	(struct histogram_value): Change rtx fields to void *.
	(rtl_register_value_prof_hooks): New declaration.
	(tree_register_value_prof_hooks): New declaration.
	(find_values_to_profile): New declaration.
	(free_profiled_values): New declaration.
	(value_profile_transformations): New declaration.
	(struct profile_hooks): New declaration.
	(init_branch_prob): Declaration moved from rtl.h.
	(branch_prob): Declaration moved from rtl.h.
	(end_branch_prob): Declaration mooved from rtl.h.
	(tree_register_profile_hooks): New declaration.
	(rtl_register_profile_hooks): New declaration.
	(tree_profile_hooks): New declaration.
	(rtl_profile_hooks): New declaration.
	* doc/invoke.texi: Document -ftree-based-profiling.

2004-02-12  Jeff Law  <law@redhat.com>

	* domwalk.c (walk_dominator_tree): Move statement walking from
	clients into here.  Walk statements in forward or backward order
	as requested by the client.  Walk either the dominator tree or
	the post-dominator tree as requested by the client.
	* domwalk.h (dom_walk_data): Add two fields to control direction of
	statement walk and dominator vs post-dominator tree walk.  Add
	BSI argument to the per-statement callbacks.
	* tree-ssa-dom.c (optimize_stmt): Update prototype so that it can
	be directly used as a callback for the dominator tree walker.
	Update stmts_to_rescan here.
	(tree_ssa_dominator_optimize): Initialize new fields in the dominator
	walker structure.  Use optimize_stmt instead of dom_opt_walk_stmts
	for statement callback.
	(dom_opt_walk_stmts): Kill.  No longer used.
	* tree-ssa.c (mark_def_sites): Update prototype so that it can be
	called as the per-statement callback.  No longer walk statements here.
	(mark_def_sites_initialize_block): New.
	(rewrite_stmt): Update prototype so that it can be called as the
	per-statement callback.
	(rewrite_walk_stmts): Kill.  No longer used.
	(rewrite_into_ssa): Initialize new fields in the dominator walker
	structure.  Use rewrite_stmt instead of rewrite_walk_stmts.  Add
	mark_def_sites_initialize_block callback.

2004-02-12  Steven Bosscher  <stevenb@suse.de>

	* doc/cfg.texi: New file.
	* doc/ggcint.texi: Include it.  Add a new chapter.

2004-02-11  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Add tree-ssa-forwprop.o
	(tree-ssa-forwprop.o): Add dependencies.
	* timevar.def (TV_TREE_FORWPROP): New timevar.
	* tree-optimize.c (init_tree_optimization_passes): Link in
	the forward propagation pass.
	* tree-pass.h (pass_forwprop): Declare.
	* tree-ssa-forwprop.c: New file with forward propagation pass.
	* doc/invoke.texi: Document dump for forward propagation pass.

2004-02-11  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (rewrite_out_of_ssa): Don't use coalesce list until new
	bug resolved.

2004-02-11  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (compare_pairs): New.  Coalesce list cost function.
	(sort_coalesce_list): Use qsort() to sort list by cost.
	(coalesce_tpa_members): Use correct partition representatives.  Add more
	debug information.  Allow coalesce by list, root_var, or both.
	(tpa_dump): Show partition index.
	* tree-ssa-live.h (SSANORM_COALESCE_PARTITIONS): New flag.
	(SSANORM_USE_COALESCE_LIST): New flag.
	* tree-ssa.c (create_temp): Don't mark as used when created.
	(coalesce_ssa_name): Create coalesce list if requested.  Add more
	debug output.
	(assign_vars): Add additional debug info.
	(remove_ssa_form): Perform TER after assign_vars().
	(rewrite_vars_out_of_ssa): Pass coalesce partitions flag to
	remove_ssa_form.
	(rewrite_out_of_ssa): Add coalesce list flag to remove_ssa_form call.

2004-02-10  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Add tree-ssa-phiopt.o
	(tree-ssa-phiopt.o): Add dependencies.
	* timevar.def (TV_TREE_PHIOPT): New timevar.
	* tree-cfg.c (extract_true_false_edges_from_block): Moved here from
	tree-ssa-dom.c.
	(tree_verify_flow_info): Use extract_true_false_edges_from_block.
	* tree-flow.h (extract_true_false_edges_from_block): Declare.
	* tree-ssa-dom.c (extract_true_false_edges_from_block): Moved into
	tree-cfg.c.
	(get_eq_expr_value): Improve type check.
	* tree-optimize.c (init_tree_optimization_passes): Link in
	phiopt pass.
	* tree-pass.h (pass_phiopt): Declare.
	* tree-ssa-phiopt.c: New file with PHI node optimization pass.
	* doc/invoke.texi: Document dump for PHI node optimization.

2004-02-10  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (lookup_scalar): Handle unnamed fields.

2004-02-10  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS-common): Add tree-ssa-alias.o.
	(tree-ssa-alias.o): New rule.
	(tree-ssa-operands.o): Add dependency on $(TIMEVAR_H) and tree-pass.h
	(gt-tree-dfa.h): Remove.
	* timevar.def (TV_TREE_OPS): Rename from unused entry TV_TREE_DFA.
	* tree-ssa-alias.c: New file.
	* tree-dfa.c (struct alias_stats_d, alias_stats, dump_alias_stats,
	may_alias_p, add_may_alias, global_var, aliases_computed_p,
	compute_may_aliases): Move to tree-ssa-alias.c.
	(struct walk_state): Remove fields 'is_asm_expr' and 'num_calls'.
	Update all users.
	(compute_alias_sets, create_memory_tags, may_access_global_mem_p,
	get_memory_tag_for, promote_call_clobbered_vars,
	find_addressable_vars): Remove.
	(call_clobbered_vars): Move to tree-ssa-alias.c and convert to
	bitmap.
	(find_referenced_vars): Move logic to create .GLOBAL_VAR to
	tree-ssa-alias.c.
	(create_ssa_name_ann): New.
	(dump_variable): Rearrange.
	(dump_dfa_stats): Do not show the number of call clobbered
	variables.
	(find_vars_r): Do not try to determine if an assignment my access
	global memory.
	(add_referenced_var): Remove hacks to establish global memory
	dependencies.
	If the variable needs to live in memory mark it call-clobbered.
	* tree-flow-inline.h (ssa_name_ann): New.
	(get_ssa_name_ann): New.
	(set_may_alias_global_mem): Remove.
	(may_alias_global_mem_p): Remove.
	(set_may_point_to_global_mem): Remove.
	(may_point_to_global_mem_p): Remove.
	(is_call_clobbered): New
	(mark_call_clobbered): New
	(mark_non_addressable): New
	* tree-flow.h (enum tree_ann_type): Add SSA_NAME_ANN.
	(enum mem_tag_kind): Declare.
	(struct var_ann_d): Remove fields 'is_call_clobbered',
	'may_alias_global_mem' and 'may_point_to_global_mem'.
	Replace bitfield 'mem_tag' with enum bitfield 'mem_tag_kind'.
	Rename field 'mem_tag' to 'type_mem_tag'.
	(struct stmt_ann_d): Change type of field 'addresses_taken' to a
	bitmap.  Update all users.
	(struct ssa_name_ann_d): Declare.
	(union tree_ann_d): Add field 'ssa_name'.
	(ssa_name_ann_t): New type.
	(struct bb_ann_d): Add field 'has_escape_site'.
	(num_call_clobbered_vars): Remove.
	(call_clobbered_var): Remove.
	(call_clobbered_vars): Change to bitmap.
	(dump_points_to_info): Declare.
	(debug_points_to_info): Declare.
	(walk_use_def_chains_fn): New type.
	(walk_use_def_chains): Declare.
	(is_call_clobbered): Declare.
	(mark_call_clobbered): Declare.
	* tree-simple.c (needs_to_live_in_memory): Move to tree.c.
	(is_gimple_non_addressable): Update comment.
	(is_gimple_call_clobbered): Remove.
	(get_call_expr_in): New.
	(get_base_var): Rename from get_base_symbol.  Update all callers.
	Don't strip SSA_NAME wrappers.
	(get_base_decl): New.
	(get_base_address): New.
	* tree-simple.h (is_gimple_call_clobbered): Remove.
	(needs_to_live_in_memory): Remove.
	(get_base_decl): Declare.
	(get_base_var): Declare.
	(get_base_address): Declare.
	* tree-ssa-dce.c (need_to_preserve_store): Reduce to calling
	needs_to_live_in_memory.
	* tree-ssa-operands.c: Include tree-pass.h and timevar.h
	(get_stmt_operands): Push/pop TV_TREE_OPS time var.
	Call mark_call_clobbered for asms that store to memory.
	(get_expr_operands): When adding operands for INDIRECT_REF
	expressions, use flow-sensitive aliasing, if available.
	Assume that malloc-like function calls won't clobber.
	(add_call_clobber_ops):
	(add_call_read_ops):
	* tree-ssa.c (rewrite_into_ssa): If any variable in vars_to_rename
	is a pointer, invalidate all name memory tags.
	(create_temp): Call is_call_clobbered and mark_call_clobbered.
	(walk_use_def_chains_1): New.
	(walk_use_def_chains): New.

	* tree.c (needs_to_live_in_memory): New.
	* tree.h (DECL_NEEDS_TO_LIVE_IN_MEMORY_INTERNAL): Define.
	(struct tree_decl): Add bitfield 'needs_to_live_in_memory'.
	Update unused bits comment.
	(needs_to_live_in_memory): Declare.

	* tree-simple.h (get_call_expr_in): Declare.
	* tree-sra.c (scalarize_stmt): Call get_call_expr_in when handling
	function calls.
	* tree-ssa-ccp.c (likely_value): Likewise.

	* params.def (PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR): Remove.
	(PARAM_MAX_CALLS_GLOBAL_VAR): Remove.
	(PARAM_GLOBAL_VAR_THRESHOLD): Define.
	(PARAM_MAX_ALIAS_SET_SIZE): Define.
	Update all users.
	* params.h (MAX_CALLS_FOR_GLOBAL_VAR): Remove.
	(MAX_CLOBBERED_VARS_FOR_GLOBAL_VAR): Remove.
	(GLOBAL_VAR_THRESHOLD): Define.
	(MAX_ALIAS_SET_SIZE): Define.

2004-02-09  Richard Henderson  <rth@redhat.com>

	* langhooks.h (lang_hooks_for_functions): Add missing_noreturn_ok_p.
	* langhooks-def.h, c-lang.c, objc/objc-lang.c
	(LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P): New.
	* c-objc-common.c (c_missing_noreturn_ok_p): Return bool.
	(c_objc_common_init): Don't set lang_missing_noreturn_ok_p.
	* c-tree.h (c_missing_noreturn_ok_p): Update decl.
	* flow.c (lang_missing_noreturn_ok_p): Remove.

	* flow.c (check_function_return_warnings): Move to tree-cfg.c.
	* toplev.c (rest_of_compilation): Don't call it.
	* tree-cfg.c (execute_warn_function_return): Move from flow.c,
	rename, update for tree vs rtl.
	(pass_warn_function_return): New.
	* tree-pass.h (pass_warn_function_return): Declare it.
	* tree-optimize.c (init_tree_optimization_passes): Run it.

	* function.h (struct function): Remove x_clobber_return_insn.
	* function.c (free_after_compilation): Don't set it.
	(expand_function_end): Likewise.

2004-02-09  Richard Henderson  <rth@redhat.com>

	Revert:
	2004-02-06  Richard Henderson  <rth@redhat.com>
	* tree-ssa-dom.c (record_equivalences_from_phis): Use
	record_const_or_copy.
	(record_equivalences_from_stmt): Likewise.  Replace
	block_avail_exprs_p and block_nonzero_vars_p args with bd.

2004-02-09  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (get_eq_expr_value): Improve handling of boolean
	conditions.

	* domwalk.c (walk_dominator_tree): Completely lose PARENT argument.
	Callers updated.  No longer pass PARENT to callbacks.
	* domwalk.h (struct dom_walk_data): Corresponding changes.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa.c: Likewise.

	* domwalk.c (walk_dominator_tree): Change last argument to be the
	parent block in the dominator tree rather than the last statement
	in the parent block in the dominator tree.  Similarly in all the
	callbacks.
	* domwalk.h (struct dom_walk_data): Update callback prototypes.
	* tree-ssa-dom.c: Corresponding changes.
	* tree-ssa.c: Likewise.

	* tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Break out
	of tree_ssa_dominator_optimize.  If the out-of-ssa pass creates
	new variables, then invalidate some requested jump threads.

2004-02-08  Richard Henderson  <rth@redhat.com>

	* flow.c (regno_uninitialized): Remove.
	* output.h (regno_uninitialized): Remove.
	* function.c (setjmp_vars_warning): Rename from
	uninitialized_vars_warning, remove uninitialized vars warning.
	* toplev.c (rest_of_handle_life): Update to match.
	* tree.h (setjmp_vars_warning): Likewise.

	* tree-sra.c (lookup_scalar): Set DECL_NAME to something descriptive.

	* tree-ssa.c (warn_uninit): New.
	(warn_uninitialized_var, warn_uninitialized_phi): New.
	(execute_early_warn_uninitialized): New.
	(execute_late_warn_uninitialized): New.
	(gate_warn_uninitialized): New.
	(pass_early_warn_uninitialized): New.
	(pass_late_warn_uninitialized): New.
	* tree-pass.h (pass_early_warn_uninitialized): New.
	(pass_late_warn_uninitialized): New.
	* tree-optimize.c (init_tree_optimization_passes): Add them.

2004-02-08  Richard Henderson  <rth@redhat.com>

	* cppexp.c (append_digit): Rearrange unsignedp/overflow setting.
	(eval_token, num_binary_op, num_part_mul, num_div_op): Likewise.
	* ra-rewrite.c (rewrite_program2): Zero info.
	* reload.c (decompose): Zero val.
	* tree-ssa-ccp.c (visit_phi_node): Zero phi_val.const_val.

2004-02-07  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (save_body): Clone the parm decl correctly.

	* cgraph.c: Add introductionary comment.
	(cgraph_remove_node): Release DECL_SAVED_INSNS too.
	* cgraphunit.c: Likewise.
	(cgraph_finalize_function): Release DECL_SAVED_INSNS of external function.
	(decl_expand_function): Release DECL_SAVED_INSNS/body/tree.
	(cgraph_remove_unreachable_nodes): Likewise; guard cgraph verification.

2004-02-06  Richard Henderson  <rth@redhat.com>

	* common.opt (fdisable-tree-ssa): Remove.
	* flags.h (flag_disable_tree_ssa): Remove.
	* toplev.c (flag_disable_tree_ssa): Remove.
	(f_options): Don't set it.
	* opts.c (common_handle_option): Likewise.
	* doc/invoke.texi (fdisable-tree-ssa): Remove.

2004-02-06  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (record_equivalences_from_phis): Use
	record_const_or_copy.
	(record_equivalences_from_stmt): Likewise.  Replace
	block_avail_exprs_p and block_nonzero_vars_p args with bd.

2004-02-06  Andrew Pinski  <pinskia@physics.uc.edu>

	PR middle-end/13127
	* tree-inline.c (declare_return_variable): Set the no warning bit
	on the variable created for the return value.

2004-02-06  Richard Henderson  <rth@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Render NON_LVALUE_EXPR.

	* tree-ssa-dom.c (local_fold): New.
	(thread_across_edge, simplify_rhs_and_lookup_avail_expr,
	find_equivalent_equality_comparison): Use it.

2004-02-06  Andrew Pinski  <pinskia@physics.uc.edu>

	PR c/13863
	* c-common.c (c_decl_uninit_1): Remove.
	(c_decl_uninit): Remove.
	* c-common.h (c_decl_uninit): Remove prototype.
	* c-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
	* objc/objc-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
	* c-simplify.c (gimplify_decl_stmt): Set TREE_NO_WARNING
	on the decl where the initial is itself.
	* function.c (uninitialized_vars_warning): Remove old comment
	and check for DECL_INITIAL, replace with a check of TREE_NO_WARNING
	and do not call the langhook.
	* langhooks-def.h (LANG_HOOKS_DECL_UNINIT): Remove.
	(LANG_HOOKS_INITIALIZER): Remove usage of LANG_HOOKS_DECL_UNINIT.
	* langhooks.c (lhd_decl_uninit): Remove.
	* langhooks.h (lhd_decl_uninit): Remove prototype.

2004-02-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (record_const_or_copy_1): New.
	(record_const_or_copy): New.
	(thread_across_edge): Use it.
	(dom_opt_finalize_block): Likewise.  Tidy.
	(record_equality): Split out from ...
	(record_equivalences_from_incoming_edge): ... here.

2004-02-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Allow
	mixing PLUS and MINUS when folding operations.

2004-02-05  Andrew Macleod  <amacleod@redhat.com>

	* tree-pretty-print.c (dump_bb_header):  Allow TDF_SLIM printing.
	(dump_bb_end):  Allow TDF_SLIM printing.
	(dump_generic_bb_buff):  Add flags parameter to dump_bb_end.

2004-02-05  Jan Hubicka  <jh@suse.cz>

	* alias.c (find_base_term, get_addr):  Do not dereference NULL
	pointer when all VALUE's locations has been invalidated.
	(rtx_equal_for_memref_p): Simplify checking of VALUEs.

2004-02-04  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_init): Reorder/Redo code so that we
	actually free the memory in intraprocedural mode.
	(andersen_cleanup): Ditto.

2004-02-04  Richard Henderson  <rth@redhat.com>

	* tree-ssa-ccp.c (get_value, visit_phi_node,
	visit_assignment, dump_lattice_value): Tidy.
	(evaluate_stmt): Don't do debug dump here.
	(def_to_undefined): Merge into set_lattice_value.
	(def_to_varying): Likewise, but retain as a wrapper.
	(set_lattice_value): Tidy.  Emit correct debug info.
	(replace_uses_in): Remove strlen hacks.
	(execute_fold_all_builtins): Fix DECL_BUILT_IN comparison.
	Force folding of BUILT_IN_CONSTANT_P.

2004-02-04  Richard Henderson  <rth@redhat.com>

	* builtins.c (fold_builtin_expect): New.
	(fold_builtin_1): Call it.

2004-02-04  Jeff Law  <law@redhat.com>

	* jump.c (duplicate_loop_exit_test): Allow copying of the loop
	exit test even if we do not find the LOOP_END note.

	* domwalk.c: Update comments.

2004-02-04  Brian Booth  <bbooth@redhat.com>

	PR opt/13755
	* tree-dfa.c (compute_alias_sets): set rename flag for variables
	aliased by GLOBAL_VAR.

2004-02-04  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (simplify_switch_and_lookup_avail_expr): New.
	(eliminate_redundant_computations): Call it.

2004-02-03  Richard Henderson  <rth@redhat.com>

	PR opt/13869
	* tree-cfg.c (cfg_remove_useless_stmts_bb): Correct handling of
	boolean variables in COND_EXPR_COND.

2004-02-03  Richard Henderson  <rth@redhat.com>

	PR middle-end/13325
	* builtins.c (fold_builtin_1): Rename from fold_builtin.
	(fold_builtin): New.
	* c-simplify.c (gimplify_expr_stmt): Check TREE_NO_WARNING.
	* stmt.c (expand_expr_stmt_value): Likewise.
	* tree.h (struct tree_common): Add nowarning_flag.
	(TREE_NO_WARNING): New.
	(TREE_NO_UNUSED_WARNING): Remove.
	* c-typeck.c (build_unary_op): Use TREE_NO_WARNING instead.
	* stmt.c (warn_if_unused_value): Likewise.

2004-02-03  Steven Bosscher  <stevenb@suse.de>

	* tree-ssa-dce.c: Partial rewrite.  The old DCE is now called
	`conservative'.  The more aggressive algorithm uses control
	dependence and is called `aggressive' or cd-dce.
	* timevar.def (TV_TREE_DCE): Rename.
	(TV_TREE_CD_DCE, TV_CONTROL_DEPENDENCES): New timevars.
	* tree-pass.h: Declare extern pass_cd_dce.
	* tree-optimize.c (init_tree_optimization_passes): Replace
	the final DCE pass with a CD-DCE pass.

2004-02-01  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_mark_inline_edge): Fix insertion to
	cgraph_inline_hash.

2004-01-30  Frank Ch. Eigler  <fche@redhat.com>

	* common.opt: Add support for -fmudflapth, -fmudflapir.
	* invoke.texi: Document them.
	* opts.c: Ditto.
	* flags.h: Add new flags flag_mudflap_threads, _ignore_reads.
	* toplev.c: Initialize new flags.  Remove redundant code from
	lang_independent_options[].
	* tree-mudflap.c (*): Support new flag_mudflap_threads encoding.
	(mf_xform_derefs_1): Support flag_mudflap_ignore_reads option.
	* c-mudflap.c (mflang_flush_calls): Mark static ctor TREE_USED.

2004-01-30  Ian Lance Taylor  <ian@wasabisystems.com>

	* gengtype-yacc.y (bitfieldlen): Add empty action.

2004-01-30  Diego Novillo  <dnovillo@redhat.com>

	* configure.ac: Move configuration for libbanshee and
	libgmp from configure.in.

2004-01-30  Richard Henderson  <rth@redhat.com>

	PR opt/13524
	* gengtype-yacc.y (struct_fields): Accept unnamed bitfields.
	(bitfieldlen): Split from ...
	(bitfieldopt): ... here.
	* gimplify.c (mark_not_gimple): Remove.
	(gimplify_call_expr): Don't ignore BUILT_IN_MD.
	* tree-dfa.c (struct walk_state): Remove is_not_gimple.
	(find_referenced_vars): Don't look for TREE_NOT_GIMPLE.
	(find_vars_r, add_referenced_var): Likewise.
	* tree-ssa-operands.c (get_stmt_operands, get_expr_operands): Likewise.
	* tree-simple.h (mark_not_gimple): Remove.
	* tree.h (struct tree_common): Remove not_gimple_flag.
	(TREE_NOT_GIMPLE): Remove.

2004-01-29  Jason Merrill  <jason@redhat.com>

	PR c++/13865
	* c-simplify.c (gimplify_for_stmt): Reorganize to fix cleanups.

2004-01-29  Richard Henderson  <rth@redhat.com>

	PR c++/13543
	* tree-inline.c (initialize_inlined_parameters): Register the
	substitute reference also.

2004-01-29  Richard Henderson  <rth@redhat.com>

	* tree-inline.c (gimple_expand_calls_inline): Look inside
	RETURN_EXPR.

	* tree-pretty-print.c (dump_generic_node): If TDF_DETAILS, dump
	both name and uid.

2004-01-29  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* cfg.c (unlink_block): Reset prev_bb and next_bb.

2004-01-29  Jeff Law <law@redhat.com>
	    Andrew MacLeod <amacleod@redhat.com>

	* tree-ssa-live.h (tpa_next_partition): Correctly handle compressed
	elements.
	* tree-ssa.c (coalesce_ssa_name): New argument, flags.  Callers
	updated.  Test SSANORM_COMBINE_TEMPS in flags rather than
	flag_tree_combine_temps.
	(coalesce_vars): Either operand of a copy might not have a
	partition when rewriting a subset of the variables out of SSA form.
	(rewrite_vars_out_of_ssa): Honor -ftree-combine-temps by passing
	in SSANORM_COMBINE_TEMPS in flags argument to remove_sas_form..

2004-01-29  Dale Johannesen  <dalej@apple.com>

	* Makefile.in (OBJS-common):  Move tree-nomudflap.o...
	(OBJS-archive): ...to here, and remove duplicate tree-optimize.o.

2004-01-28  Richard Henderson  <rth@redhat.com>

	PR middle-end/13898
	* gimplify.c (gimplify_init_constructor): Invoke
	lhd_set_decl_assembler_name on the now-static variable.

2004-01-28  Richard Henderson  <rth@redhat.com>

	PR opt/13798
	* expr.c (is_zeros_p): Remove.  Change all callers to use
	initializer_zerop.
	(categorize_ctor_elements_1, categorize_ctor_elements): New.
	(count_type_elements): New.
	(mostly_zeros_p): Use them.
	* gimplify.c (tmp_var_id_num): Split out from create_tmp_var_raw.
	(create_tmp_var_name): Likewise.
	(gimplify_init_constructor): Drop constructors to readonly memory
	as indicated by categorize_ctor_elements and can_move_by_pieces.
	* tree.c (initializer_zerop): Handle VECTOR_CST.  Don't check
	AGGREGATE_TYPE_P for CONSTRUCTOR.
	* tree.h (categorize_ctor_elements): Declare.
	(count_type_elements): Declare.
	* Makefile.in (gimplify.o): Update dependencies.
	(GTFILES): Add gimplify.c.

2004-01-27  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_register_decls): Support VLAs.
	(mf_xform_derefs_1): Disable checking shortcut for VLAs.
	* c-simplify.c (gimplify_decl_stmt): Add mudflap xref comment.
	* gimplify.c (gimplify_bind_expr): Ditto.

2004-01-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c:  Add more comments describing SSAPRE and
	the various functions.
	(generate_expr_as_of_bb): Use PRED, a basic block argument, instead of
	j, the index of that bb.
	(generate_vops_as_of_bb): Ditto.
	(insert_occ_in_preorder_dt_order): Rename to
	create_and_insert_occ_in_preorder_dt_order.

2004-01-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (rename_1): Add some more comments.

2004-01-25  Andrew Pinski  <pinskia@physics.uc.edu>

	PR c/13748
	* c-decl.c (finish_function): Do not pass
	the function on to optimizers if there was an error.

2004-01-23  Richard Henderson  <rth@redhat.com>

	PR opt/12941
	* combine.c (SHIFT_COUNT_TRUNCATED): Provide default value.
	(simplify_comparison): Don't simplify (eq (zero_extract c 1 r) 0)
	if SHIFT_COUNT_TRUNCATED is set.

2004-01-21  Richard Henderson  <rth@redhat.com>

	PR c/11267
	* c-decl.c (c_finalize): New.
	(finish_function): Use it.  Genericize and finalize only non-nested
	functions.  Register nested functions with cgraph.
	* c-simplify.c: Include cgraph.h.
	(c_genericize): Genericize nested functions.
	* gimplify.c (gimplify_expr): Use DECL_SAVED_INSNS to access
	the struct function for the context.
	* Makefile.in (c-simplify.o): Update dependencies.

2004-01-21  Steven Bosscher  <stevenb@suse.de>

	PR opt/13767
	* tree-cfg.c (simple_goto_p): Remove NONLOCAL_LABEL check.

2004-01-21  Dale Johannesen  <dalej@apple.com>

	* tree-dfa.c: Fix comment.

2004-01-21  Richard Henderson  <rth@redhat.com>

	PR opt/13681
	* tree-ssa-operands.c (get_expr_operands): Handle (&x + c).

	* tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Handle
	flexible array members and lookalikes.

2004-01-21  Dale Johannesen  <dalej@apple.com>

	* tree-ssa-dom.c (cprop_into_stmt):  Add convert call
	to prevent type mismatches.

2004-01-21  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (load_modified_phi_result): PARM_DECL is okay
	to not have a defbb.
	(rename_1): Add a comment.

2004-01-21  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (find_equivalent_equality_comparison): Treat
	CONVERT_EXPRs just like NOP_EXPRs.
	(record_equivalences_from_stmt): Similarly.
	(thread_across_edge): Fix formatting goof.

	* tree-ssa-dom.c (thread_across_edge): Remove bogus restriction
	which prevents threading around to the top of a loop.

	* tree-ssa-dom.c (thread_across_edge): Handle SWITCH_EXPRs in the
	target block in addition to COND_EXPRs.

	* tree-ssa-dom.c (thread_across_edge): Create equivalences for
	PHIs before looking at the statements in the destination
	block.

2004-01-20  Roger Sayle  <roger@eyesopen.com>

	* fold-const.c (fold_convert): Rename to fold_convert_const.
	(fold_convert_const): Change arguments to take a tree_code,
	a type and the operand/expression to be converted.  Return
	NULL_TREE if no simplification is possible.  Add support for
	FIX_CEIL_EXPR and FIX_FLOOR_EXPR in addition to FIX_TRUNC_EXPR.
	(fold): Handle FIX_CEIL_EXPR and FIX_FLOOR_EXPR.
	Adjust call to fold_convert to match new fold_convert_const.
	Avoid modifying the tree passed to fold in-place.
	(nondestructive_fold_unary_to_constant): Likewise, simplify
	call to fold_convert to match new fold_convert_const.

2004-01-20  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_op_assign): Update
	prototype. Make this handle &x in the operands using
	the addrargs parameter.
	(andersen_init): Turn off ip_partial until variables
	aliasing variables in other functions is resolved.
	(andersen_add_var): Use newly renamed alias_var_new_with_aterm.
	Fix comment.
	(andersen_add_var_same): Ditto.
	(andersen_function_call): Use ip_partial, not flag_unit_at_a_time.
	* tree-alias-common.c (get_values_from_constructor): Add bitmap
	and int * arguments. Used to mark operands that we are taking
	address of.
	(get_alias_var_decl): We should never see FIELD_DECL's right now.
	(intra_function_call): Reverse ordering for slightly faster
	projection merging.
	(find_op_of_decl): New function.
	(find_func_aliases): Use it.
	Comment x = foo.y case.
	Move get_alias_var_decl of arguments so we only call it if
	necessary.
	Handle address of arguments in operations.
	(create_fun_alias_var): tvar->var.
	Set context of fakeargs.
	Set context of fakedecls.
	Set DECL_PTA_ALIASVAR of RETURN_DECL's.
	(create_fun_alias_var_ptf): tvar->var.
	Set context of fakedecls.
	(create_alias_vars): Only create alias vars for globals
	with DECL_INITIAL's.
	* tree-alias-common.h (struct tree_alias_ops):
	Update op_assign arguments.
	(may_alias): Fix comment.
	(same_points_to_set): Ditto.
	(empty_points_to_set): Ditto.
	* tree-alias-type.h: Rename alias_tvar_new_with_aterm
	-> alias_var_new_with_aterm.
	* tree-alias-type.c: Ditto.

2004-01-20  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (get_scalar_for_field): Validate field.
	(create_scalar_copies): Iterate over rhs fields too.

2004-01-19  Dale Johannesen  <dalej@apple.com>

	* params.def:  Add PARAM_MAX_CALLS_GLOBAL_VAR and
	PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR.
	params.h:  Ditto.
	tree-dfa.c:  Use them.
	doc/invoke.texi:  Document them.

2004-01-19  Jeff Law  <law@redhat.com>

	* tree-ssa.c (insert_phi_nodes_for): Always use fully pruned
	SSA form.

	* tree-flow.h: Update copyright dates.
	(register_new_def): Declare.
	* tree-ssa-dom.c: Update copyright dates.
	Add tracking of current definition of each program variable just
	like we do when rewriting into SSA form.
	(get_value_for, set_value_for): Handle either an SSA_NAME or
	regular variable.
	(tree_ssa_dominator_optimize): Initialize and update CURRDEFS.
	If we thread through a block with real statements, the destination
	of those statements must be rewritten too.
	(thread_across_edge): Skip nop statements at the start of a
	block.
	(dom_opt_initialize_block_local_data): Clear block_defs
	appropriately.
	(record_equivalences_from_phis): Accept walk_data structure.
	Call register_new_def appropriately.
	(optimize_stmt): Call register_new_defs_for_stmt.
	(dom_opt_finalize_block): Restore CURRDEFS appropriately.
	(register_new_definitions_for_stmt): New.
	* tree-ssa.c: Update copyright dates.
	(register_new_def): No longer static.  Accept additional argument
	for the table to hold the new definition.  Callers updated.

	* gimplify.c: Update copyright dates.
	* tree-cfg.c: Likewise.
	* tree.h: Likewise.

	* tree-iterator.c, tree-iterator.c: Use GCC rather than GNU CC.
	* tree-ssa-pre.c, tree-ssa-live.h: Likewise.

2004-01-19  Daniel Berlin  <dberlin@dberlin.org>

	* timevar.def (TV_TREE_SPLIT_EDGES): New timevar.
	* tree-ssa-pre.c (split_critical_edges): Move from here
	(pass_pre): Add PROP_no_crit_edges as required.
	* tree-cfg.c (split_critical_edges): to here.
	(pass_split_crit_edges): New pass.
	* tree-optimize.c (tree_optimization_passes): Add NEXT_PASS
	(split_crit_edges).
	* tree-pass.h: Add PROP_no_crit_edges.
	(pass_split_crit_edges): Declared.

2004-01-19  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_build_check_statement_for): Tolerate
	incoming locus NULL pointer.

2004-01-18  Richard Henderson  <rth@redhat.com>

	* builtins.c (simplify_builtin_strcpy): Export.  Take strlen argument.
	(simplify_builtin_strncpy, simplify_builtin_strcmp): Similarly.
	(simplify_builtin_strncmp): Similarly.
	(simplify_builtin): Update to match.
	* expr.h (simplify_builtin_strcmp, simplify_builtin_strncmp,
	simplify_builtin_strcpy, simplify_builtin_strncpy): Declare.
	* tree-pass.h (pass_fold_builtins): New.
	* tree-optimize.c (init_tree_optimization_passes): Add it.
	* tree-ssa-ccp.c (ccp_fold_builtin): Handle BUILT_IN_STRCPY,
	BUILT_IN_STRNCPY, BUILT_IN_STRCMP, BUILT_IN_STRNCMP.
	(get_strlen): Don't cast to size_t.
	(execute_fold_all_builtins, pass_fold_builtins): New.

2004-01-19  Jan Hubicka  <jh@suse.cz>

	PR opt/13729
	* cgraphunit.c (cgraph_finalize_compilation_unit): Fix memory leak.
	(cgraph_remove_unreachable_nodes):  Do not mix analyzed and
	DECL_SAVED_TREE flags.

2004-01-18  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): Remove.
	(sra_candidates, needs_copy_in): Use a bitmap.  Update all users.
	(struct sra_elt, sra_elt_hash, sra_elt_eq): New.
	(sra_map_size): Remove.
	(sra_map): Use a htab_t.
	(lookup_scalar): Update to match.
	(get_scalar_for_field, get_scalar_for_complex_part): Likewise.
	(scalarize_structure_assignment): Use annotate_all_with_locus.
	(csc_build_component_ref): Remove index argument.
	(csc_build_complex_part): Take tree_code, not index.
	(create_scalar_copies): Don't collect indicies.
	(emit_scalar_copies): New.
	(scalarize_modify_expr, scalarize_tree_list): Use it.
	(scalarize_return_expr): Likewise.
	(scalarize_structures): Simplify needs_copy_in iteration.
	(scalarize_call_expr): Use annotate_all_with_locus.
	(dump_sra_map_trav): Split from ...
	(dump_sra_map): ... here.  Update for hash table.
	(tree_sra): Update for new datastructures.

2004-01-18  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (dump_function_to_file): Move ";; Function" header ...
	* tree-optimize.c (execute_one_pass): ... here.

2004-01-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c: s@_typevar@_var@g, s@_TVAR@_VAR@g,
	s@_TYPEVAR@_VAR@g
	* tree-alias-common.h: Ditto
	* tree.h: Ditto
	* tree-alias-ander.c: Ditto
	* tree-alias-type.c: Ditto
	* tree-alias-type.h: Ditto

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-complex.c (gimplify_val): Copy TREE_BLOCK.

	* tree-complex.c (gimplify_val): New.
	(extract_component, do_binop, do_unop): Use it.

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-complex.c (expand_complex_operations_1): Fix RETURN_EXPR
	thinko in last change.

2004-01-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* cfghooks.c (split_block): Don't redirect edges.
	* cfgrtl.c (rtl_split_block): Do it here.
	* tree-cfg.c (tree_split_block): Ditto.

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (verify_expr): Tidy.  Check COND_EXPR for boolean
	condition.

2004-01-17  Jan Hubicka  <jh@suse.cz>

	PR optimization/11761
	* Makefile.in: Remove tree-simple.c from GTYized files.
	* tree-dfa.c (find_addressable_vars): Parse nontrivial ADDR_EXPRs.
	(discover_nonconstant_array_refs_r): New static function.
	(discover_nonconstant_array_refs): New global function.
	* tree-flow.h (discover_nonconstant_array_refs): Declare.
	* tree-simple.c (types_checked, types_in_memory): Kill.
	(struct_needs_to_live_in_memory): Kill.
	(needs_to_live_in_memory): aggregates are safe.
	* tree-ssa.c (rewrite_out_of_ssa): Call the new function.

2004-01-17  Richard Henderson  <rth@redhat.com>

	PR opt/13718
	* tree-complex.c (expand_complex_comparison): Handle COND_EXPR.
	(expand_complex_operations_1): Likewise.

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (scalarize_tree_list): Take bitmap argument to
	avoid emitting duplicates.  Update all callers.

2004-01-17  Richard Henderson  <rth@redhat.com>

	PR opt/13718
	* tree-complex.c (expand_complex_comparison): New.
	(expand_complex_operations_1): Handle EQ_EXPR and NE_EXPR.

2004-01-16  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (get_alias_var): Handle BIT_FIELD_REF.
	(find_func_aliases): Ditto.
	Update for fact that basic component_refs are no longer
	is_gimple_variable.
	(create_fun_alias_var): Set DECL_CONTEXT on our faked declarations.
	(pass_del_pta): PTA dumps info on delete, so it needs a name.

2004-01-16  Steven Bosscher  <stevenb@suse.de>

	* tree-optimize.c (init_tree_optimization_passes): Run DCE
	before the first dominator optimization pass.

2004-01-15  Brian Booth <bbooth@redhat.com>
	    Richard Henderson  <rth@redhat.com>

	* tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): New.
	(sra_map_size): New.
	(make_temp): New.
	(mark_all_vdefs): New.
	(is_sra_candidate_decl): New.
	(is_sra_candidate_ref): New.
	(lookup_scalar): Use sra_map_size, make_temp.
	(get_scalar_for_field): Rename from get_scalar_for.
	(get_scalar_for_complex_part): New.
	(can_be_scalarized_p): Handle COMPLEX_TYPE.
	(scalarize_component_ref): Handle REAL/IMAGPART_EXPR.
	(scalarize_structure_assignment): Tidy.
	(find_candidates_for_sra): Handle COMPLEX_TYPE, return bool.
	(csc_assign, csc_build_component_ref): Split out from ...
	(create_scalar_copies): ... here.  Handle COMPLEX_TYPE.
	(csc_build_complex_part): New.
	(scalarize_modify_expr): Use is_sra_candidate_foo.
	(scalarize_tree_list): Likewise.
	(scalarize_return_expr): Likewise.
	(dump_sra_map): Split out from ...
	(tree_sra): ... here.  Tidy.

2004-01-15  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_xform_derefs): Accept void return statements.

2004-01-15  Andrew MacLeod  <amacleod@redhat.com>
	    Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (remove_local_expressions_from_table): New function
	extracted from dom_opt_finalize_block.
	(restore_vars_to_originalvalue): Likewise.
	(extract_true_false_edges_from_block): Likewise.
	(thread_across_edge): Handle if (cond) too.
	(dom_opt_finalize_block): Use new functions.  Handle if (cond).

	* tree-ssa-dom.c (thread_across_edge): Accept dom_walk argument.
	Record temporary equivalences created by PHIs and temporarily
	const/copy propagate into conditionals.
	(dom_opt_finalize_block): Thread across an edge to a dominated block
	if the dominated block has PHIs.  Remove temporary equivalenecs
	created by PHIs in thread_across_edge.  Update code to restore the
	various hash tables to use the actual varray rather than a local
	copy of the varray.
	(simplify_rhs_and_lookup_avail_expr): Set the condition's code
	before settings its operands.

	* tree-ssa.c (create_temp): Use add_referenced_var rather than
	an incomplete inline of its behavior.  Also make sure to
	set is_dereferenced_{load,store}, is_call_clobbered and is_stored.

	* tree-ssa-live.c (build_tree_conflict_graph): Correctly handle
	case where the result of a PHI is unused.

2004-01-15  Diego Novillo  <dnovillo@redhat.com>

	* cfghooks.c (predicted_by_p): Add missing return.

2004-01-15  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Dump new statement if
	folding succeeded.

2004-01-15  Kazu Hirata  <kazu@cs.umass.edu>

	* tree-cfg.c: Fix comment typos.
	* tree-eh.c: Likewise.
	* tree-inline.c: Likewise.
	* tree-optimize.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa-operands.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-tailcall.c: Likewise.

2004-01-14  Jan Hubicka  <jh@suse.cz>

	* basic-block.h: Include predict.h
	(tree_predicted_by_p, rtl_predicted_by_p,  rtl_predict_edge,
	predict_edge_def): Declare.
	* cfghooks.h (cfg_hooks): add predict_edge and predicted_by_p
	(predict_edge, predicted_by_p): Declare.
	* cfghooks.c (predict_edge, predicted_by_p): Declare.
	* cfgrtl (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Add new hooks.
	* cse.c (struct cse_basic_block_data): Rename enum values to not
	conflict with profile.h; update all uses.
	* predict.c:  Include tree-flow.h, ggc.h, tree-dump.h
	(predicted_by_p): Rename to ...
	(rtl_predicted_by_p): .. this one; make global
	(tree_predicted_by_p): New.
	(dump_prediction): Add FILE argument.
	(predict_edge): Rename to ...
	(rtl_predict_edge): .. this one.
	(tree_predict_edge): New.
	(combine_predictions_for_insn): Update calls of predict_edge.
	(predict_loops): Break out from ...
	(estimate_probability): ... here; update comments; move updating
	of unknown probabilities from ...
	(estimate_bb_frequencies): ... here.
	(combine_predictions_for_bb): New.
	(tree_predict_by_opcode): New.
	(tree_estimate_probability): New.
	* predict.def (PRED_TREE_POINTER, PRED_TREE_OPCODE_POSITIVE,
	PRED_TREE_OPCODE_NONEQUAL, PRED_TREE_FPOPCODE): New predictors.
	* predict.h: Add include guard.
	(predict_edge, predict_edge_def): Move prototypes to basic_block.h
	* tree-cfg.c (tree_cfg_hooks): Add prediction hooks.
	* tree-dump.c (dump_files): Add profile.
	* tree-flow.h (struct edge_prediction): New structure.
	(struct bb_ann_d): Add field predictions.
	(tree_estimate_probability): Declare.
	* tree-optimize.c (optimize_function_tree): Call tree_estimate_probability.
	* tree.h (tree_dump_index): Add TDI_profile.
	* tree-pass.h (pass_profile): Declare.

2004-01-14  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* basic-block.h (find_basic_blocks, cleanup_cfg,
	delete_unreachable_blocks, merge_seq_blocks): Declare.
	* cfgcleanup.c (merge_seq_blocks): New.
	* output.h (find_basic_blocks, cleanup_cfg, delete_unreachable_blocks):
	Declarations moved to basic-block.h.
	* tree-cfg.c (tree_merge_blocks, tree_can_merge_blocks_p): New.
	(cleanup_tree_cfg): Call merge_seq_blocks.
	(tree_cfg_hooks): Add tree_can_merge_blocks_p and tree_merge_blocks.

2004-01-14  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_make_forwarder_block): Fix.

2004-01-14  Richard Henderson  <rth@redhat.com>

	* tree-complex.c: New file.
	* Makefile.in (OBJS-common): Add it.
	* tree-pass.h (pass_lower_complex): New.
	* tree-optimize.c (init_tree_optimization_passes): Add it.

2004-01-14  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-ssa-loop.o): Add cfgloop.h dependency.
	(cfghooks.o): Add TIMEVAR_H and toplev.h dependency.
	* basic-block.h (struct edge_def): Use ir_type instead testing of
	cfg_hooks directly.
	(tidy_fallthru_edge, tidy_fallthru_edges, dump_bb, verify_flow_info):
	Declaration removed.
	* cfg.c (verify_flow_info, dump_bb): Moved to cfghooks.c.
	* cfgcleanup.c (try_simplify_condjump): Changed due to change of
	tidy_fallthru_edge.
	* cfghooks.c: Include timevar.h and toplev.h.
	(cfg_hooks): Made static.
	(tree_register_cfg_hooks, ir_type): New.
	(verify_flow_info, dump_bb): Moved from cfg.c.
	(redirect_edge_and_branch, redirect_edge_and_branch_force,
	split_block, split_block_after_labels, move_block_after,
	delete_basic_block, split_edge, create_basic_block,
	create_empty_bb, can_merge_blocks_p, merge_blocks,
	make_forwarder_block, tidy_fallthru_edge, tidy_fallthru_edges): New.
	* cfghooks.h (struct cfg_hooks): Modified.
	(redirect_edge_and_branch, redirect_edge_and_branch_force, split_block,
	delete_basic_block, split_edge, create_basic_block, can_merge_blocks_p,
	merge_blocks, make_forwarder_block): Changed into functions.
	(loop_optimizer_init, loop_optimizer_finalize): Removed.
	(HEADER_BLOCK, LATCH_EDGE): Moved into cfgloop.c.
	(tidy_fallthru_edge, tidy_fallthru_edges, create_empty_bb,
	verify_flow_info, dump_bb, ir_type): Declare.
	(cfg_layout_rtl_cfg_hooks): Declare.
	* cfglayout.c (copy_bbs): Don't call add_to_dominance_info.
	* cfgloop.c (HEADER_BLOCK, LATCH_EDGE): Moved from cfghooks.h.
	(update_latch_info, mfb_keep_just, mfb_keep_nonlatch): New functions.
	(canonicalize_loop_headers): Use new semantics of make_forwarder_block.
	* cfgloop.h (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
	Removed.
	(loop_optimizer_init, loop_optimizer_finalize): Declare.
	* cfgloopmanip.c (split_loop_bb): Don't update dominators.
	(remove_bbs): Don't call remove_bbs.
	(create_preheader): Use make_forwarder_block.
	(mfb_keep_just, mfb_update_loops): New static functions.
	* cfgrtl.c (cfg_layout_split_block, rtl_split_block,
	rtl_make_forwarder_block, rtl_create_basic_block,
	rtl_delete_block, rtl_split_block, rtl_merge_blocks,
	tidy_fallthru_edge, rtl_split_edge, cfg_layout_merge_blocks,
	cfg_layout_split_edge): Parts not specific to rtl moved to cfghooks.c
	(tidy_fallthru_edges): Moved to cfghooks.c.
	(rtl_move_block_after): New.
	(redirect_edge_with_latch_update, update_cfg_after_block_merging):
	Removed.
	(rtl_cfg_hooks, cfg_layout_rtl_cfg_hooks): Modified.
	* ifcvt.c (merge_if_block, find_cond_trap, find_if_case_1,
	find_if_case_2): Don't update dominators.
	* loop-init.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
	Replaced by rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
	* loop-unswitch.c (unswitch_loop): Don't call add_to_dominance_info.
	* toplev.c (rest_of_handle_loop2): Enter cfglayout mode here.
	* tree-cfg.c (create_bb): Modified to suit create_basic_block hook.
	(tree_redirect_edge_and_branch_1): Merged into
	tree_redirect_edge_and_branch.
	(create_blocks_annotations): Removed.
	(tree_loop_optimizer_init, tree_loop_optimizer_finalize): Removed.
	(tree_make_forwarder_block, remove_bb, tree_split_edge,
	tree_redirect_edge_and_branch, tree_split_block,
	tree_move_block_after): Partially moved to cfghooks.c.
	(tree_duplicate_bb): New.
	(PENDING_STMT): Moved to tree-flow.h.
	(tree_register_cfg_hooks): Moved to cfghooks.c.
	(build_tree_cfg): Don't call create_blocks_annotations.
	(factor_computed_gotos, make_blocks): Use create_empty_bb.
	(cleanup_tree_cfg): Use delete_unreachable_blocks.
	(remove_unreachable_blocks, insert_bb_before): Removed.
	(remove_phi_nodes_and_edges_for_unreachable_block): Modified.
	(tree_find_edge_insert_loc, thread_jumps): Use cfg hooks.
	(bsi_commit_edge_inserts): Update_annotations argument removed.
	(tree_cfg_hooks): Modified.
	* tree-flow.h (PENDING_STMT): Moved from tree-cfg.c.
	(insert_bb_before, remove_unreachable_blocks,
	remove_phi_nodes_and_edges_for_unreachable_block, tree_split_edge):
	Declaration removed.
	(bsi_commit_edge_inserts): Declaration changed.
	(tree_duplicate_bb): Declare.
	* tree-sra.c (scalarize_structures): Changed due to
	bsi_commit_edge_inserts change.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Use
	delete_unreachable_blocks.
	* tree-ssa-loop.c: Include cfgloop.h.
	* tree-ssa-pre.c (split_critical_edges, tree_perform_ssapre): Use cfg
	hooks.
	* tree-ssa.c (rewrite_trees, rewrite_vars_out_of_ssa): Changed due to
	bsi_commit_edge_inserts change.
	(ssa_redirect_edge): Record the phi arguments on the redirected edge.
	* tree-tailcall.c (eliminate_tail_call): Clean stored phi arguments.

2004-01-13  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_lhs_complex_part_expr): Remove.
	(gimplify_modify_expr): Don't call it.

	* tree-alias-common.c (HAVE_BANSHEE): Make sure it's defined.
	(pass_build_pta): Set name.

2004-01-13  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c (eliminate_tail_call): Add phi nodes for the call
	vdefs.
	(find_tail_calls): Ignore returns with virtual operands.

2004-01-12  Richard Henderson  <rth@redhat.com>

	* tree-pass.h: New file.
	* gimple-low.c: Include tree-pass.h.
	(lower_function_body): Make static, take no arguments.  Set
	dont_emit_block_notes and call reset_block_changes here.
	(pass_lower_cf): New.
	* toplev.c (general_init): Call init_tree_optimization_passes.
	* toplev.h (init_tree_optimization_passes): Declare.
	* tree-alias-ander.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(andersen_init): Don't dump_begin.
	(andersen_cleanup): Don't dump_end.
	* tree-alias-common.c: Include tree-pass.h, timevar.h.
	(currptadecl): Remove.
	(create_alias_vars): Make static, take no args.  Tidy ifdefs.
	(delete_alias_vars): Likewise.  Protect vs PTA_ANDERSEN.
	(pass_build_pta, pass_del_pta): New.
	* tree-alias-common.h (create_alias_vars): Delete decl.
	(delete_alias_vars): Likewise.
	* tree-cfg.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(build_tree_cfg): Don't timevar, do init_flow.  Ensure one bb.
	Don't dump the function here.
	(execute_build_cfg, pass_build_cfg): New.
	(remove_useless_stmts): Make static, take no arguments.
	(pass_remove_useless_stmts): New.
	(remove_bb): Don't open the dump file.
	* tree-dfa.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(find_referenced_vars): Make static, take no args.  Do init_tree_ssa.
	(compute_may_aliases): Similarly.  Don't timevar or open dump file.
	Don't delete_alias_vars here.
	(pass_referenced_vars, pass_may_alias): New.
	* tree-dump.c (dump_files): Remove optimization dumps.
	(extra_dump_files, extra_dump_files_in_use): New.
	(extra_dump_files_alloced): New.
	(dump_register): New.
	(get_dump_file_info): New.
	(dump_begin, dump_enabled_p, dump_flag_name): Use it.
	(dump_enable_all): Handle extra_dump_files.
	(dump_switch_p_1): Split out from dump_switch_p.
	(dump_switch_p): Handle extra_dump_files.
	* tree-dump.h (dump_register): Declare.
	* tree-eh.c: Include tree-pass.h
	(lower_eh_constructs): Make static, take no args.  Don't timevar,
	don't dump function.
	(pass_lower_eh): New.
	* tree-flow.h (remove_useless_stmts, find_referenced_vars,
	compute_may_aliases, lower_function_body, rewrite_out_of_ssa,
	tree_ssa_ccp, tree_ssa_dominator_optimize, tree_ssa_dce,
	tree_ssa_loop_opt, lower_eh_constructs, tree_sra): Remove.
	(rewrite_into_ssa): Update decl.
	* tree-mudflap.c: Include tree-pass.h.
	(mudflap_function_decls): Make static, take no args, don't process
	functions with mf_marked_p.
	(mudflap_function_ops): Likewise.
	(gate_mudflap, pass_mudflap_1, pass_mudflap_2): New.
	(mudflap_enqueue_decl): Don't open dump file.
	(mudflap_enqueue_constant): Likewise.
	* tree-nomudflap.c: Include tree-pass.h.
	(mudflap_c_function_decls, mudflap_c_function_ops): Remove.
	(pass_mudflap_1, pass_mudflap_2): New.
	* tree-optimize.c: Include tree-pass.h.
	(optimize_function_tree): Remove.
	(tree_dump_file, tree_dump_flags, vars_to_rename): New.
	(all_passes): New.
	(execute_gimple, pass_gimple): New.
	(execute_rebuild_bind, pass_rebuild_bind): New.
	(gate_all_optimizations, pass_all_optimizations): New.
	(execute_del_cfg, pass_del_cfg): New.
	(register_one_dump_file, register_dump_files): New.
	(dup_pass_1, init_tree_optimization_passes): New.
	(current_properties, last_verified): New.
	(execute_todo, execute_one_pass, execute_pass_list): New.
	(tree_rest_of_compilation): Remove -O0 passes.
	* tree-sra.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
	(tree_sra): Make static, take no args.  Don't timevar or dump file.
	(gate_sra, pass_sra): New.
	* tree-ssa-ccp.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): New.
	(tree_ssa_ccp): Make static, take no args.  Don't timevar or dump file.
	(gate_ccp, pass_ccp): New.
	(substitute_and_fold): Take no args.
	* tree-ssa-dce.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): New.
	(tree_ssa_dce): Make static, take no args.  Don't open dump file.
	(gate_dce, pass_dce): New.
	* tree-ssa-dom.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
	(tree_ssa_dominator_optimize): Make static, take no args, don't
	timevar, don't dump file.
	(gate_dominator, pass_dominator): New.
	* tree-ssa-loop.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(tree_ssa_loop_opt): Make static, take no args, don't open dump file.
	(gate_loop, pass_loop): New.
	* tree-ssa-pre.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(execute_pre): Rename from tree_perform_ssapre, make static,
	take no args, don't timevar, don't open dump file, don't allocate
	vars_to_rename.
	(gate_pre, pass_pre): New.
	* tree-ssa.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
	(rewrite_into_ssa): Take no arguments, don't open dump file.
	(rewrite_out_of_ssa): Make static, take no args, don't timevar,
	don't open dump file.  Disable TER if mudflap.
	(pass_build_ssa, pass_del_ssa): New.
	* tree-tailcall.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(tree_optimize_tail_calls_1): Rename from tree_optimize_tail_calls.
	Make static, take only opt_tailcalls, don't dump file.
	(execute_tail_recursion, gate_tail_calls, execute_tail_calls): New.
	(pass_tail_recursion, pass_tail_calls): New.
	* tree.h (enum tree_dump_index): Remove optimization dumps.
	* Makefile.in (tree-alias-ander.o, tree-alias-common.o, tree-ssa.o,
	tree-ssa-dom.o, tree-ssa-pre.o, tree-cfg.o, tree-tailcall.o,
	tree-dfa.o, tree-eh.o, tree-ssa-loop.o, tree-optimize.o, gimple-low.o,
	tree-mudflap.o, tree-ssa-dce.o, tree-ssa-ccp.o, tree-sra.o: Update
	dependencies.

2004-01-12  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_xform_derefs): Restore instrumentation of
	RETURN_EXPRs.

2004-01-11  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (remove_usless_stmts_cond):  Fold statement.
	(remove_useless_stmts_1):  Fold trees we know how to fold.

2004-01-09  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_constructor): Merge into ...
	(gimplify_init_constructor): ... here.  Handle COMPLEX_TYPE and
	VECTOR_TYPE.
	(gimplify_lhs_complex_part_expr): New.
	(gimplify_modify_expr): Call it.
	* tree-simple.c (is_gimple_rhs): Accept COMPLEX_EXPR.
	* c-pretty-print.c (pp_c_initializer): Accept any type CONSTRUCTOR.
	(pp_c_initializer_list): Fix code expectations for VECTOR_TYPE and
	COMPLEX_TYPE.

2004-01-09  Steven Bosscher  <stevenb@suse.de>

	PR optimization/13599
	* tree-cfg.c (remove_useless_stmts_cond): Clear last-goto
	before returning.

2004-01-09  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_asm_expr): Fix ordering of ASM_INPUTS.

2004-01-09  Jan Hubicka  <jh@suse.cz>

	* cgraph.h (cgraph_clone_inlined_nodes): Declare.
	* cgraphunit.c (cgrpah_clone_inlined_nodes): Make global.
	(cgraph_mark_inline_edge): Sanity check that size is positive.
	(cgraph_decide_inlining): Fix typo.
	* tree-optimize.c (tree_rest_of_compilation): Fix node duplication
	code.

2004-01-09  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (estimate_num_insns_1): Fix.

2004-01-09  Richard Henderson  <rth@redhat.com>

	* tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
	tree-sra.c, tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-dom.c,
	tree-ssa-loop.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c: Rename
	dump_file and dump_flags to tree_dump_file/flags.

2004-01-08  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_build_string): Properly mf_mark string.
	(mf_varname_tree): Remove redundant marking.
	* tree-optimize.c (tree_rest_of_compilation): Skip mudflap processing
	of mf_marked functions.
	* c-mudflap.c (mflang_flush_calls): mf_mark synthetic function.

2004-01-07  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS-common): Remove tree-must-alias.o
	(tree-must-alias.o): Remove.
	* common.opt (ftree-must-alias): Remove.
	* flags.h (flag_tree_must_alias): Remove.  Update all users.
	* timevar.def (TV_TREE_MUST_ALIAS): Remove.
	* toplev.c (f_options): Remove entry for -ftree-must-alias.
	* tree-alias-common.c (local_alias_vars): Add GTY marker.
	(local_alias_varnums): Likewise.
	* tree-dfa.c (aliases_computed_p): Declare.
	(dump_variable): Show variable UID and dereferenced bits.
	(compute_may_aliases): Add arguments 'vars_to_rename' and 'phase'.
	Do not call create_alias_vars.
	Call promote_call_clobbered_vars
	Do debugging dumps.
	Set 'aliases_computed_p' to true before returning.
	(create_memory_tags): Call may_be_aliased.
	Mark new memory tags for renaming.
	(compute_alias_sets): Don't do debugging dumps.
	(find_variable_in): Move from tree-must-alias.c
	(remove_element_from): Likewise.
	(find_addressable_vars): Likewise
	(promote_call_clobbered_vars): New.
	(get_memory_tag_for): Mark the tag volatile if the pointed-to type
	is volatile.
	* tree-dump.c (dump_files): Remove entry for tree-mustalias.
	Add entries for tree-ssa7, tree-dom3 and tree-dce3.
	* tree-flow-inline.h (may_be_aliased): New.
	* tree-flow.h (may_be_aliased): Declare.
	(aliases_computed_p): Declare.
	(tree_compute_must_alias): Remove.
	* tree-must-alias.c: Remove.
	* tree-optimize.c: Include tree-alias-common.h.
	(optimize_function_tree): Call create_alias_vars before going into
	SSA form.
	Do not compute aliases until after the first DOM and DCE passes.
	Run DOM and DCE once more after computing may-aliases.
	* tree-ssa-dom.c (propagate_copy): Merge the dereferenced bit flags
	when copy propagating pointers.
	* tree-ssa-operands.c (get_stmt_operands): Assume that the
	statement has no volatile operands.
	(get_expr_operands): When processing an INDIRECT_REF expressions,
	mark the statement as having volatile operands if aliases have not
	been computed.
	(add_stmt_operand): If the variable may be aliased and aliasing has
	not been computed yet, mark the statement as having volatile
	operands.
	* tree-ssa.c (init_tree_ssa): Set aliases_computed_p to false.
	(delete_tree_ssa): Likewise.
	* tree.h (tree_dump_index): Remove TDI_mustalias.
	Add TDI_dom_3, TDI_ssa_7 and TDI_dce_3.
	* doc/invoke.texi: Remove must-alias documentation.

2004-01-07  Jeff Law  <law@redhat.com>

	* tree-ssa-dce.c (find_useful_stmts): Do not consider PHIs for
	virtual operands inherently necessary.

2004-01-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dfa.c (free_df_for_stmt, free_df): New functions.
	(compute_immediate_uses_for_stmt): Record uses in VDEFs.
	* tree-flow.h (free_df, kill_redundant_phi_nodes): Declare.
	* tree-optimize.c (optimize_function_tree): Call
	kill_redundant_phi_nodes.
	* tree-ssa-ccp.c (finalize): Call free_df.
	* tree-ssa.c (replace_immediate_uses, raise_value,
	kill_redundant_phi_nodes): New functions.

2004-01-06  Jeff Law  <law@redhat.com>

	* tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Kill.
	* tree-cfg.c (make_exit_edges, is_ctrl_altering_stmt):  Use
	current_function_has_nonlocal_label instead of
	FUNCTION_RECEIVES_NONLOCAL_GOTO.
	* gimplify.c (gimplify_expr): Set has_nonlocal_label in the
	appropriate function's struct function rather than setting
	a bit in the FUNCTION_DECL.

2004-01-06  Jan Hubicka  <jh@suse.cz>

	* expr.c (string_constant): Recognize array_ref.

2004-01-06  Richard Henderson  <rth@redhat.com>

	* builtins.c (builtin_save_expr): New.
	(expand_builtin_mathfn, expand_builtin_mathfn_2,
	expand_builtin_strcmp, expand_builtin_strncmp,
	expand_builtin_strcat, fold_builtin_cabs): Use it.

2004-01-06  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (fold): Do not rebuild comparison when nothing
	changed.

2004-01-05  Jan Hubicka  <jh@suse.cz>

	* tree-ssa-ccp.c (ccp_fold_builtin): Return early for builtins
	taking no arugment.

2004-01-05  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-ssa-dce.c: Clean up whitespace.

	* tree-cfg.c (tree_verify_flow_info): Fix complaint about
	missing or wrong labels in the targets of a conditional branch.

2004-01-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Check
	for signed zeros before recording value.
	* Makefile.in (tree-ssa-dom.o): Depend on real.h.

2004-01-05  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_stmt): Remove hack which prevented
	copy propagation into statements with virtual operands, but no
	real operands.

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Correctly handle
	the case where an edge we wish to redirect is split by the out of SSA
	code.

2004-01-05  Richard Henderson  <rth@redhat.com>

	* c-tree.h (struct lang_type): Add enum_min, enum_max.
	* c-decl.c (finish_enum): Set them.  Set TYPE_MIN/MAX_VALUE to
	the limits of the compatible type, not to the enumerators.
	(check_bitfield_type_and_width): Use them.
	(finish_struct): Clear allocated struct lang_type.
	* gimplify.c (gimplify_switch_expr): Remove special handling of
	outer cast in a switch.
	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Likewise.

2004-01-05  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (added_phis): Removed.
	Remove gt-tree-ssa-pre.h.
	(process_left_occs_and_kills): ASM_EXPR's block load pre.

	* Makefile.in (GTFILES): Don't process tree-ssa-pre.c.
	gt-tree-ssa-pre.h isn't a gtfile anymore.

2004-01-05  Andrew Pinski  <pinskia@physics.uc.edu>

	* config.gcc (powerpc-*-darwin*): Make libbanshee rebuild
	on PPC darwin.

2004-01-05  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_expr): Move check for error_mark inside
	the main loop.

2004-01-04  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (cgraph.o, cgraphunit.o): Add intl.h dependency.
	* cgraph.c (create_edge, dump_cgraph): Update to use inline_failed
	* cgraph.h (cgraph_edge): Replace inline_call by inline_failed
	(cgraph_inline_p): Add extra argument reason.
	* cgraphunit.c: Minor formating fixes.
	cgraph_first_inlined_callee): New functions.
	(record_call_1): Record builtins too.
	(cgraph_analyze_function): Update inline_failed messages.
	(cgraph_mark_functions_to_output, cgraph_expand_function, cgraph_inlined_into,
	cgraph_inlined_callees, cgraph_estimate_growth): Update to use inline_failed.
	(cgraph_check_inline_limits): Likewise; Add argument reason.
	(cgraph_set_inline_failed): New static function.
	(cgraph_decide_inlining_of_small_function, cgraph_decide_inlining): Set
	reasons.
	(cgraph_inline_p): Add new argument reason.
	* tree-inline.c (expand_call_inline):  Update warning.

2004-01-04  Andreas Jaeger  <aj@suse.de>

	* common.opt: Re-order some options in ASCII collating orders.

2004-01-03  Richard Henderson  <rth@redhat.com>

	* toplev.c (rest_of_compilation): Fixup merge error wrt
	check_function_return_warnings.

	* tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Use unsigned_flag.

2004-01-02  Jan Hubicka  <jh@suse.cz>

	* c-decl.c (duplicate_decls):  Output DIE of extern inline function
	only when it can be inlined.
	* c-objc-common.c (c_disregard_inline_limits):  When not inlining
	extern inline functions do not disregard.
	* cgraphunit.c (cgraph_analyze_function): When not inlining do not set
	inline.
	(cgraph_decide_inlining): Limit work done when not inlining.
	(cgrpah_decide_inlining_incrementally): Likewise.
	* tree-optimize.c (tree_rest_of_compilation): Do not call
	optimize_inline_calls
	when there is nothing to inline.

2004-01-01  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_expand_expr): Don't handle STMT_EXPR.
	* c-objc-common.c (c_objc_common_finish_file): Use expand_expr.
	* c-semantics.c (lang_expand_stmt, lang_expand_decl_stmt,
	expand_cond, genrtl_do_pushlevel, genrtl_goto_stmt, genrtl_expr_stmt,
	genrtl_expr_stmt_value, genrtl_decl_stmt, genrtl_if_stmt,
	genrtl_while_stmt, genrtl_do_stmt_1, genrtl_do_stmt,
	genrtl_return_stmt, genrtl_for_stmt, genrtl_break_stmt,
	genrtl_continue_stmt, genrtl_scope_stmt, genrtl_switch_stmt,
	genrtl_case_label, genrtl_compound_stmt, genrtl_asm_stmt,
	genrtl_cleanup_stmt, expand_stmt, find_reachable_label,
	find_reachable_label_1, expand_unreachable_if_stmt,
	expand_unreachable_stmt): Remove.
	* c-common.h: Update.

2003-12-31  Richard Henderson  <rth@redhat.com>

	* c-mudflap.c (mflang_register_call): Remove.
	(mflang_flush_calls): Use start_function/finish_function.
	* tree-mudflap.c (mf_init_extern_trees): Tidy.
	(mf_decl_cache_locals): Fix chaining for empty body.
	(deferred_static_decl_labels): Remove.
	(deferred_static_decls_init): Remove.
	(mudflap_register_call): New.
	(mudflap_enqueue_decl): Use it.  Remove label argument.
	(mudflap_enqueue_constant): Likewise.
	(mudflap_finish_file): Update to match.
	* tree-mudflap.h (mudflap_enqueue_decl): Remove label argument.
	(mudflap_enqueue_constant): Likewise.
	(mflang_register_call): Remove.
	* tree-nomudflap.c (mudflap_enqueue_decl): Remove label argument.
	(mudflap_enqueue_constant): Likewise.
	* tree-optimize.c (tree_ssa_finish): Don't create NULL bodies.
	* varasm.c (make_decl_rtl): Update mudflap_enqueue_decl call.
	(output_constant_def_contents): Similarly for mudflap_enqueue_constant.

2003-12-26  Sebastian Pop  <s.pop@laposte.net>

	* tree-cfg.c (print_loop, print_pred_bbs, print_succ_bbs,
	debug_loop_ir, print_loop_ir): New.
	* tree-flow.h (debug_loop_ir, print_loop_ir): Declare.

2003-12-23  Jeff Law  <law@redhat.com>

	* tree-cfg.c (tree_find_edge_insert_loc): Do not use the target
	block as an insertion location if the target block has PHI nodes.

2003-12-23  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_mark_inline): Accept argument edge; return
	next edge not redirected.
	(cgraph_recursive_inlining_p): Simplify.
	(cgraph_decide_inlining*): Update calls of cgraph_mark_inline.

2003-12-22  Toon Moene  <toon@moene.indiv.nluug.nl>

	* tree-alias-common.c (find_func_aliases): Do not call
	intra_function_call for languages assuring no aliasing between
	arguments (by themselves) and global memory.

2003-12-21  Jan Hubicka  <jh@suse.cz>

	* tree-ssa-ccp.c (fold_stmt): Return when there is no RHS
	(get_rhs): Return for RETURN_EXPR with no operand.

2003-12-21  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_make_forwarder_block): Use split_block.
	(tree_split_block): New.
	(tree_cfg_hooks): Add tree_split_block.
	(tree_loop_optimizer_init):  Enable force_single_succ_latches.
	* cfgloopmanip.c (loop_split_edge_with): Don't update dominators.
	* cfgrtl.c (rtl_split_edge, cfg_layout_split_edge): Update dominators.

2003-12-19  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (alias_stats_d): New structure.
	(alias_stats): New variable.
	(create_memory_tags): Zero out alias_stats.
	(dump_alias_stats): New function.
	(compute_alias_sets): Call it if TDF_STATS is set.
	(may_alias_p): Collect the various statistics.

2003-12-19  Diego Novillo  <dnovillo@redhat.com>

	* gimple-low.c (expand_var_p): Always expand volatiles.
	* tree-dfa.c (find_referenced_vars): Move up in the file.
	(create_memory_tags): New local function.
	(compute_may_aliases): Call it.
	(add_referenced_var): Move code to create memory tags and create
	aliasing arrays to create_memory_tags.
	(get_memory_tag_for): Don't mark memory tags volatile.  Mark them
	addressable.
	* tree-flow.h (var_ann_d): Add bitfields is_dereferenced_store and
	is_dereferenced_load.
	(add_call_clobbered_var): Remove.
	* tree-ssa-operands.c (check_optype_freelist): Mark arguments
	unused.
	(add_optype_freelist): Likewise.
	(add_stmt_operand): Don't add operands for volatile variables.

2003-12-19  Kazu Hirata  <kazu@cs.umass.edu>

	* dominance.c: Fix comment typos.
	* et-forest.c: Likewise.
	* et-forest.h: Likewise.
	* tree-cfg.c: Likewise.
	* tree-eh.c: Likewise.
	* tree-mudflap.c: Likewise.
	* tree-optimize.c: Likewise.
	* tree-pretty-print.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-tailcall.c: Likewise.
	* tree.def: Likewise.
	* tree.h: Likewise.

2003-12-18  Jason Merrill  <jason@redhat.com>

	PR c++/12453
	* c-simplify.c (stmt_expr_last_stmt): Split out from...
	(gimplify_stmt_expr): Here.
	* c-common.h: Declare it.

2003-12-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* et-forest.h (et_forest_create, et_forest_delete,
	et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
	et_forest_remove_edge, et_forest_parent,
	et_forest_common_ancestor, et_forest_node_value,
	et_forest_enumerate_sons): Declarations removed.
	(struct et_node): New.
	(et_new_tree, et_free_tree, et_set_father, et_split, et_nca,
	et_below): Declare.
	* et-forest.c (struct et_forest_occurrence, struct et_forest,
	struct et_forest_node): Removed.
	(et_forest_create, et_forest_delete,
	et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
	et_forest_remove_edge, et_forest_parent,
	et_forest_common_ancestor, et_forest_node_value,
	et_forest_enumerate_sons, splay, remove_all_occurrences,
	find_leftmost_node, find_rightmost_node, calculate_value): Removed.
	(struct et_occ): New.
	(et_nodes, et_occurences): New.
	(set_depth, set_depth_add, set_prev, set_next, et_recomp_min,
	et_check_occ_sanity, et_check_sanity, et_check_tree_sanity,
	record_path_before_1, record_path_before, check_path_after_1,
	check_path_after, et_splay, et_new_occ, et_new_tree,
	et_free_tree, et_set_father, et_split, et_nca, et_below): New.
	* basic-block.h (struct basic_block_def): New field dom.
	(struct dominance_info): Type removed.
	(calculate_dominance_info, free_dominance_info,
	nearest_common_dominator, set_immediate_dominator,
	get_immediate_dominator, dominated_by_p, get_dominated_by,
	add_to_dominance_info, delete_from_dominance_info,
	recount_dominator, redirect_immediate_dominators,
	iterate_fix_dominators, verify_dominators): Declarations
	changed.
	(enum dom_state): New.
	(dom_computed): New variable.
	(first_dom_son, next_dom_son): Declare.
	* dominance.c (struct dominance_info): Removed.
	(BB_NODE, SET_BB_NODE): Removed.
	(calculate_dominance_info, free_dominance_info,
	nearest_common_dominator, set_immediate_dominator,
	get_immediate_dominator, dominated_by_p, get_dominated_by,
	add_to_dominance_info, delete_from_dominance_info,
	recount_dominator, redirect_immediate_dominators,
	iterate_fix_dominators, verify_dominators,
	debug_dominance_info): Work over new datastructure.  Access
	dominance datastructures through CFG.
	(assign_dfs_numbers, compute_dom_fast_query, first_dom_son,
	next_dom_son): New.
	* tree-cfg.c (pdom_info): Variable removed.
	(create_bb): Add the block to the dominance information.
	(cleanup_tree_cfg): Let updating of the dominance on the
	individual passes.
	(remove_bb): Don't handle pdom.
	(cleanup_control_expr_graph, tree_make_forwarder_block,
	thread_jumps): Invalidate the dominators.
	(tree_split_edge): Update the dominators.
	(compute_dominance_frontiers_1, compute_dominance_frontiers,
	tree_verify_flow_info, tree_loop_optimizer_init): Use the new
	interface to dominators.
	* domwalk.c (walk_dominator_tree): Do not use dom_children.
	* tree-flow-inline.h (add_dom_child, remove_dom_child,
	clear_dom_children, dom_children): Removed.
	* tree-flow.h (struct bb_ann_d): Dom_children field removed.
	(add_dom_child, dom_children, build_dominator_tree): Declaration
	removed.
	(compute_dominance_frontiers): Declaration changed.
	* tree-optimize.c (optimize_function_tree): Free dominance
	information in the end.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize,
	dom_opt_finalize_block): Do not use dom_children.
	* tree-ssa-pre.c (fast_a_dominates_b, build_dfs_id_array_1,
	build_dfs_id_array): Removed.
	(pre_idom, dfs_id, dfs_id_last): Variables removed.
	(build_dfn_array): Do not use dom_children.
	(eref_compare, load_modified_phi_result, rename_1, reaching_def,
	finalize_1, collect_expressions, tree_perform_ssapre): Use the
	new interface to the dominance information.
	* tree-ssa.c (struct mark_def_sites_global_data): Idom field
	removed.
	(set_livein_block, verify_use, verify_phi_args,
	rewrite_into_ssa, mark_def_sites, verify_ssa): Use the new
	interface to the dominance information.
	(build_dominator_tree): Removed.
	* tree-tailcall.c (tree_optimize_tail_calls): Invalidate
	dominance information.
	* bt-load.c (dom): Variable removed.
	(augment_live_range, combine_btr_defs, migrate_btr_def,
	migrate_btr_defs, branch_target_load_optimize): Updated for the
	new interface for dominance information.
	* cfglayout.c (copy_bbs): Removed loops argument. Updated for
	the new interface for dominance information.
	* cfglayout.h (copy_bbs): Declaration changed.
	* cfgloop.c (flow_loop_pre_header_find, flow_loops_cfg_dump,
	flow_loop_scan, canonicalize_loop_headers, flow_loops_find): Updated
	for the new interface for dominance information.
	(flow_loop_scan): Loops argument removed.
	(flow_loops_free): Don't release dominators.
	* cfgloop.h (struct cfg): Dom field removed.
	(flow_loop_scan, loop_split_edge_with, simple_loop_p,
	just_once_each_iteration_p, split_loop_bb): Declaration changed.
	* cfgloopanal.c (simple_loop_exit_p, simple_increment,
	just_once_each_iteration_p, simple_loop_p): Remove loops argument.
	Updated for the new interface for dominance information.
	* cfgloopmanip.c (remove_bbs, find_path, create_preheader,
	split_loop_bb, loopify, duplicate_loop_to_header_edge,
	force_single_succ_latches, loop_split_edge_with): Ditto.
	(create_loop_notes): Free the dominators.
	* gcse.c (dominators): Variable removed.
	(free_code_hoist_mem, compute_code_hoist_data, hoist_code):
	Updated for the new interface for dominance information.
	* ifcvt.c (post_dominators): Variable removed.
	(mark_loop_exit_edges, merge_if_block, find_if_header,
	find_cond_trap, find_if_case_1, find_if_case_2, if_convert):
	Updated for the new interface for dominance information.
	* loop-init.c (rtl_loop_optimizer_init,
	rtl_loop_optimizer_finalize): Ditto.
	* loop-unroll.c (decide_peel_simple, decide_peel_once_rolling,
	decide_peel_completely, decide_unroll_stupid,
	decide_unroll_constant_iterations,
	decide_unroll_runtime_iterations): Loops argument removed.
	Updated for the new interface for dominance information.
	(unroll_and_peel_loops, peel_loops_completely,
	unroll_loop_runtime_iterations): Updated for the new interface for
	dominance information.
	* loop-unswitch.c (may_unswitch_on_p, unswitch_loops,
	unswitch_single_loop, unswitch_loop): Updated for the new
	interface for dominance information.
	* predict.c (process_note_predictions, process_note_prediction,
	estimate_probability, note_prediction_to_br_prob): Ditto.
	* sched-rgn.c (find_rgns, init_regions): Ditto.
	* toplev.c (rest_of_handle_branch_prob): Free the dominators.

2003-12-18  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (edges_to_redirect, redirection_targets): Merged
	into a single varray "redirection_edges".
	(tree_ssa_dominator_optimize): Twiddle initialization, finalization
	and accessors to redirection information based on combining varrays.
	Get the threading destination from the saved edge rather than from a
	saved block.  Mark variables appearing in PHIs at the jump thread
	destination to be taken out of SSA form.
	(thread_across_edge): Save the edge into the destination block
	rather than the destination block itself.  Twiddle based on
	combining varrays of jump threading information.
	* tree-flow.h (tree_block_forwards_to): Returns an edge rather than
	a block.
	* tree-cfg.c (tree_block_forwards_to): Return the edge leading to
	the target block rather than the target block itself.

2003-12-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (get_memory_tag_for): Don't put things with different
	points-to sets in the same memory tag.

2003-12-18  Jan Hubicka  <jh@suse.cz>

	* c-common.c (handle_nonnull_attribute, check_function_nonnull):
	Initialize arg_num.
	* c-format.c (handle_format_attribute): Initialize format_num.
	* rtlanal.c (get_related_value): Initialize get_jump_table_offset

2003-12-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* stmt.c (expand_start_loop, expand_loop_continue_here,
	expand_end_loop): Don't create loop notes.

2003-12-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Jeff Law  <law@redhat.com>

	* tree-cfg.c (tree_node_shared_p): Explicitly allow sharing of
	CST nodes.
	* tree-simple.c (is_gimple_rhs): Allow CST nodes.
	(is_gimple_min_invariant): Reject constants with TREE_OVERFLOW set.
	* tree-ssa-ccp (visit_assignment): Test is_gimple_min_invariant
	after munging bitfields.
	* tree-ssa-dom.c (record_equivalences_from_stmt): Similarly.

2003-12-17  Jan Hubicka  <jh@suse.cz>

	Based on patch by Dale Johannesen
	* expr.c (MOVE_RATIO, CLEAR_RATIO): Move to ...
	* expr.h (MOVE_RATIO, CLEAR_RATIO): ... here

2003-12-17  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (sibcall.o): Kill.
	(tree-tailcall.o): Add except.h dependency
	* sibcall.c: Kill.
	(purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
	* calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
	(expand_call): Do not produce placeholders; do not deal with tail
	recursion; set tail_call_emit.
	(fixup_tail_calls): New.
	* expr.h (fixup_tail_calls): Declare.
	* toplev.c (rest_of_handle_sibling_calls): Kill.
	(rest_of_compialtion): Do not use rest_of_handle_sibling_calls;
	call fixup_tail_calls.
	* tree-dump.c (dump_files): Add tail2
	* tree-flow.h (tree_optimize_tail_calls): Update prototype.
	* tree-optimize.c (optimize_function_tree): Do tail optimization twice.
	* tree-tailcall.c: Inlucde except.h
	(suitable_for_tail_call_opt_p): New.
	(optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
	(tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
	* tree.h (CALL_EXPR_TAILCALL): New.
	(tree_dump_index): Add tail2
	* function.h (struct function): Add tail_call_emit field.

2003-12-17  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (estimate_num_insns_1):  Check that all nodes are
	known; add missing nodes; fix MODIFY_EXPR

2003-12-16  Jason Merrill  <jason@redhat.com>

	PR middle-end/12920
	* stor-layout.c (layout_type): Just return if type is
	error_mark_node.
	* c-decl.c (grokdeclarator): Immediately layout an
	ARRAY_TYPE used in a pointer-to-array declarator.

2003-12-16  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (may_alias_p): If VAR and PTR are pointers with the
	same alias set, return false.
	(get_memory_tag_for): Group based on alias set classes, not on
	conflicting alias sets.
	* tree-must-alias.c (promote_var): Don't bring aliases over when
	all the may-aliases of a non-promotable variable are promoted.

2003-12-16  Andrew MacLeod  <amacleod@redhat.com>

	* tree-flow-inline.h (free_vuse, free_vdefs): Moved to
	tree-ssa-operands.c
	(get_def_ops, get_use_ops, get_vdef_ops, get_vuse_ops): Use the new
	more direct structure pointer.
	(get_use_op_ptr, get_def_op_ptr): Cast is no longer necessary.
	* tree-flow.h (struct stmt_ann_d): Replace operands and voperands
	pointers with pointers directly to the operand types.
	* tree-ssa-dom.c (cprop_into_stmt): Use new stmt based interface to
	free virtual operands.  Check virtual bases of both VUSE and VDEF.
	* tree-ssa-operands.c (struct voperands_d): Declare here, used only
	for previous_vops during stmt operand construction.
	(struct vecmanage_d, vecmanage_add_segmen, vecmanage_add_special,
	vecmanage_init, vecmanage_tree_ptr_init, vecmanage_fini, check_free,
	vecmanage_new_vector, vecmanage_new_tree_ptr_vector,
	vecmanage_free_vector): Remove.
	(allocate_ssa_op_vec, free_ssa_op_vec, allocate_ssa_virtual_op_vec,
	allocate_operands_t, allocate_voperands_t): Remove.
	(finalize_new_ssa_operands, inalize_new_ssa_virtual_operand): Remove.
	(struct freelist_d): New. List of free operand structures.
	(check_optype_freelist): New. Choose memory from freelist, if available.
	(add_optype_freelist): New. Add structure to freelist, if appropriate.
	(allocate_def_optype): New. Allocate a def operand list from GC.
	(allocate_use_optype): New. Allocate a useoperand list from GC.
	(allocate_vdef_optype): New. Allocate a vdef operand list from GC.
	(allocate_vuse_optype): New. Allocate a vuse operand list from GC.
	(free_uses, free_defs, free_vuses, free_vdefs): Use GC and the freelist.
	(remove_vuses, remove_vdefs): New.  External interface to remove virtual
	operands.
	(init_ssa_operands, fini_ssa_operands): Ensure the free list is empty.
	(finalize_ssa_defs, finalize_ssa_use, finalize_ssa_vdefs,
	finalize_ssa_vuses): Use new direct pointers from the stmt annotation.
	(append_vdef, append_vuse): No need to hack prev_vops pointer now.
	(get_stmt_operands): use new freeing interface, keep previous vops in
	their own local structure for now, passing its address around.
	* tree-ssa-operands.h (struct def_optype_d, struct use_optype_d,
	struct vdef_optype_d, struct vuse_optype_d): Implement as a single
	dynamically allocated structure.
	(struct operands_d, struct operands_d): Remove.
	* tree-ssa-pre.c (subst_phis): Remove virtual operands using new funcs.

2003-12-16  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (verify_addr_expr): Rename to ....
	(verify_expr):  ... this one; check that no SSA names are on
	freelist.
	(verify_stmt, verify_stmts): Update calls of verify_addr_expr.

	Revert until initializers are made language independent:
	* cgraphunit.c (record_call_1): Do not call analyze_expr hook
	* langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
	(LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
	* longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.

2003-12-16  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-pretty-print.c (dump_bb_header): Show block number when
	there is no label.
	(pp_cfg_jump): Show labels in addition to block numbers.
	(dump_generic_bb_buff): Always call dump_bb_header.

2003-12-16  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_remove_unreachable_nodes): Fix typo;
	improve comments; cleanup linked list mantenance.

2003-12-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-sra.c (can_be_scalarized_p): Reject volatile variables.

	* sibcall.c (skip_copy_to_return_value): Initialize 'hardret' and
	'softret'.

2003-12-16  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (cgraph_remove_node): Ignore DECL_EXTERNAL clones.
	* cgraphunit.c (verify_cgraph_node): Do not insist on unemmited extern
	inline functions to be valid.
	(cgraph_finalize_compilation_unit):  Fix ordering.
	(cgraph_mark_functions_to_output): Do not insist on DECL_EXTERNAL
	nodes to be reclaimed.
	(cgraph_remove_unreachable_nodes): New function.
	(cgraph_decide_inlining): use it.

2003-12-15  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in (TREE_FLOW_H): Add dependence on tree-ssa-operands.h
	(OBJS-common): Add tree-ssa-operands.o
	(tree-ssa-operands.o): Add dependencies.
	(GTFILES): Add tree-ssa-operands.[ch].
	* tree-dfa.c (get_stmt_operands, get_expr_operands, add_stmt_operand,
	note_addressable, add_def, add_use, add_vde, add_vuse,
	add_call_clobber_ops, add_call_read_ops): Moved to tree-ssa-operands.c.
	(compute_immediate_uses_for_stmt): Use new optypes interface.
	(cleanup_operand_arrays): Delete.
	(collect_dfa_stats_r): Use new optypes interface.
	(get_call_flags): Moved to tree-ssa-operands.c.
	(vdefs_disappeared_p, mark_new_vars_to_rename): Use optypes interface.
	* tree-flow-inline.h (def_ops, use_ops, vdef_ops, vuse_ops): Use new
	optypes.
	(free_vuses): New. Clear and release vuses.
	(free_vdefs): New. Clear and release vdefs.
	(get_use_ops_ptr): New. Get address of a use op.
	(get_def_ops_ptr): New. Get address of a use op.
	(get_vdef_result_ptr): New. Get address of a use op.
	(get_vdef_op_ptr): New. Get address of a use op.
	(get_vuse_op_ptr): New. Get address of a use op.
	(start_ssa_stmt_operands): New. Entry point to start processing stmt
	operands.
	* tree-flow.h (struct operands_d, struct voperands_d): Move to
	tree-ssa-operands.h
	(struct stmt_ann_d): Add GTY markers to operands.
	* tree-pretty-print.c (dump_vops): Use optypes interface.
	* tree-sra.c (create_scalar_copies): Use optypes interface.
	(scalarize_structures, scalarize_modify_exp): Use optypes interface.
	* tree-ssa-ccp.c (visit_stmt, ccp_fold, initialize, replace_uses_in,
	likely_value, set_rhs): Use optypes interface.
	* tree-ssa-dce.c (find_useful_stmts, stmt_useful_p, process_worklist):
	Use optypes interface.
	* tree-ssa-dom.c (thread_across_edge, thread_jumps_walk_stmts): Use
	optypes interface.
	(cprop_into_stmt): Rewrite using new interface.
	(eliminate_redundant_computations, record_equivalences_from_stmt,
	optimize_stmt, avail_expr_hash, avail_expr_eq): Use optypes interface.
	* tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
	build_tree_conflict_graph,register_ssa_partitions_for_vars): Use
	optypes interface.
	* tree-ssa-pre.c (names_match_p, maybe_find_rhs_use_for_var,
	expr_phi_insertion, same_e_version_real_occ_real_occ, opnum_of_phi,
	generate_expr_as_of_bb, generate_vops_as_of_bb, subst_phis,
	load_modified_real_occ_real_occ, same_e_version_phi_result, can_insert,
	get_default_def, reaching_def, process_left_occs_and_kills,
	collect_expressions): Use optypes interface.
	* tree-ssa.c (mark_def_sites, check_replaceable, find_replaceable_in_bb,
	dump_replaceable_exprs, rewrite_trees, verify_ssa, rewrite_stmt): Use
	optypes interface.
	(init_tree_ssa): Initialize new operand data structures.
	(delete_tree_ssa): Free new operand structures.
	* tree.h (VDEF_RESULT, VDEF_OP, NUM_VDEFS): Move to tree-ssa-operands.h.

	* tree-ssa-operands.h: New file.
	(struct def_optype_d): New. Structure for stmt defs.
	(struct use_optype_d): New. Structure for stmt uses.
	(struct vdef_optype_d): New. Structure for stmt vdefs.
	(struct vuse_optype_d): New. Structure for stmt vuses.
	(USE_OPS, STMT_USE_OPS, NUM_USES, USE_OP_PTR, USE_OP): Macros to
	access stmt uses.
	(DEF_OPS, STMT_DEF_OPS, NUM_DEFS, DEF_OP_PTR, DEF_OP): Macros to
	access stmt defs.
	(VDEF_OPS, STMT_VDEF_OPS, NUM_VDEFS, VDEF_RESULT_PTR, VDEF_RESULT,
	VDEF_OP_PTR, VDEF_OP): Macros to access stmt vdefs.
	(VUSE_OPS, STMT_VUSE_OPS, NUM_VUSES, VUSE_OP_PTR, VUSE_OP): Macros to
	access stmt vuses.
	(struct operands_d, struct voperands_d): moved from tree-dfa.c.
	* tree-ssa-operands.c: New file.
	(build_defs, build_uses, build_vdefs, build_vuses): New static varrays.
	(struct vecmanage_d): New. Struct to manage non-GC vectors.
	(vecmanage_add_segment): New. Add a new segment to a vector manager.
	(vecmanage_add_special): New. Add a large vector to the special list.
	(vecmanage_init): Initialize a vector manager.
	(vecmanage_tree_ptr_init): New. Initialize a vector manager for tree *.
	(vecmanage_fini): New. Release vector manager memory.
	(check_free): New. Look for free memory in the vector maanger.
	(vecmanage_new_vector): New. Allocate a vector.
	(vecmanage_new_tree_ptr_vector): New. Allocate a vector of 'tree *'.
	(vecmanage_free_vector): New. Free a vector.
	(free_ssa_op_vec): New. Free an ssa operand's memory.
	(allocate_ssa_op_vec): New. Allocate a vector for use/defs.
	(allocate_ssa_virtual_op_vec): New. Allocate a vector for vuse/vdefs.
	(allocate_operands_t): New. Allocate an operand structure.
	(allocate_voperands_t): New. Allocate a virtual operand structure.
	(free_uses): New. Clear and release uses.
	(free_defs): New. Clear and release defs.
	(init_ssa_operands): New. Initialize ssa operand management.
	(fini_ssa_operands): New. Cleanup ssa operand management.
	(finalize_new_ssa_operands): New. Commit current operands.
	(finalize_new_ssa_virtual_operands): New. Commit current virtual ops.
	(finalize_ssa_defs): New. Commit and verify stmt definitions.
	(finalize_ssa_uses): New. Commit and verify stmt uses.
	(finalize_ssa_vdefs): New. Commit and verify stmt virtual definitions.
	(finalize_ssa_vuses): New. Commit and verify stmt virtual uses.
	(finalize_ssa_stmt_operands): New. Commit all stmt operands.
	(verify_start_operands): New. Verify build mechanism is ready for a new
	stmt.
	(append_def): Renamed from add_def, and moved from tree-dfa.c.
	(append_use): Renamed from add_def, and moved from tree-dfa.c.
	(append_vdef): Renamed from add_def, and moved from tree-dfa.c.
	(append_vuse): Renamed from add_def, and moved from tree-dfa.c.
	(add_vuse): New. Entry point to add a vuse to a stmt.
	(get_call_flags): Moved from tree-dfa.c
	(get_stmt_operands, get_expr_operands, add_stmt_operand): Moved from
	tree-dfa.c, and use new optype interface.
	(note_addressabe, add_call_clobber_ops, add_call_read_ops): Moved from
	tree-dfa.c

2003-12-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Call BITMAP_XFREE.

2003-12-15  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/12747

	* tree-cfg.c (verify_addr_expr): Simplify predicates.
	* tree-must-alias.c (addresses_needed): Declare as file local.
	(can_be_promoted): New.
	(tree_compute_must_alias): Call it.
	Remove promoted variables from call_clobbered_vars.
	(find_addressable_vars): Update comment.
	Remove argument.  Update callers.
	(promote_var): Always clear TREE_ADDRESSABLE.
	Don't remove promoted variables from call_clobbered_vars.
	If the promoted variable is in the may-alias set of a
	non-promotable variable, copy its alias set into the alias set of
	the non-promotable variable.
	(find_variable_in): Update comment.
	* tree-sra.c (can_be_scalarized_p): Reject structures with
	__complex__ fields in them.

2003-12-15  Diego Novillo  <dnovillo@redhat.com>
	    Jason Merrill <jason@redhat.com>

	PR optimization/12747

	* Makefile.in (tree-simple.o): Add dependency on bitmap.h and
	$(GGC_H).
	(GTFILES): Add tree-simple.c.
	* tree-simple.c: Include ggc.h and bitmap.h.
	(is_gimple_non_addressable_1): Remove.  Update all callers.
	(types_checked): New local variable.
	(types_in_memory): New local variable.
	(struct_needs_to_live_in_memory): New.
	(needs_to_live_in_memory): New.
	(is_gimple_reg): Call it.
	(is_gimple_non_addressable): Call it.
	(is_gimple_call_clobbered): Call it.
	* tree-simple.h (needs_to_live_in_memory): Declare.

2003-12-14  Andreas Jaeger  <aj@suse.de>

	* config/rs6000/rs6000.c (rs6000_output_function_epilogue): Handle
	GNU F95.

2003-12-14  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_expand_function):  Release function body when no
	longer needed.
	(lookup_recursive_calls): New function.
	(cgraph_decide_recursive_inlining): Likewise.
	(cgraph_decide_inlining_of_small_functions): Do recursive inlining.
	* tree-inline.c: Include function.h
	(copy_body): Choose saved body for recursive inlining.
	(initialize_inlined_parameters): Likewise.
	(expand_call_inline): Do not verify nodes when recursivly inlining,
	insert ret_label into decl map.
	* params.def (PARAM_MAX_INLINE_INSNS_RECURSIVE,
	PARAM_MAX_INLINE_INSNS_RECURSIVE_AUTO,
	PARAM_MAX_INLINE_RECURSIVE_DEPTH,
	PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO): New argument.
	* invoke.texi (max-inline-insns-recursive, max-inline-recursive-depth):
	Document.
	* Makefile.in (tree-inline.o): Include function.h.

2003-12-14  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (record_call_1): Do not call analyze_expr hook
	* langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
	(LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
	* longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.

2003-12-13  Jan Hubicka  <jh@suse.cz>

	* timevar.def (TV_TREE_STMT_VERIFY, TV_CFG_VERIFY, TV_CGRAPH_VERIFY):
	New timers.
	* tree-cfg.c (verify_stmts):  Push/pop timevar.
	* cfg.c: Include timevar.h
	(verify_flow_info): Push/pop timevar.
	* Makefile.in (cfg.o): Add dependnecy on TIMEVARS

	* cgraph.c (cgraph_create_edge): Sanity check for duplicates;
	initialize aux.
	(cgraph_remove_node): Decrease cgraph_n_nodes; do not clear
	DECL_SAVED_TREE when dumping.
	(cgraph_dump_node): Break out from ...; print more information.
	(cgraph_dump): ... here.
	* cgraph.h (cgraph_node): Add aux field.
	(dump_cgraph_node, verify_cgraph, verify_cgraph_node): Declare.
	(cgraph_mark_inline_edge): Declare
	* cgraphunit.c (error_found): New static variable.
	(verify_cgraph_node_1): New static function.
	(verify_cgraph_node, verify_cgraph): New global function.
	(cgraph_expand_function): More sanity checks.
	(cgraph_clone_inline_nodes): Destructivly clone DECL_EXTERNAL nodes.
	(cgraph_mark_inline_edge): Make global.
	(cgraph_decide_inlining): Remove extern inline functions never inlined.
	(cgraph_decide_inlining_incrementally): Verify that function body is
	still present.
	(expand_all_functions): Verify that all nodes are reachable.
	(cgraph_optimize): Verify cgraph and memory management.
	* tree-inline.c (copy_body_r): All edges must be present.
	(expand_call_inline): Sanity check newly created edges and nodes
	being inlined.
	(optimize_inline_calls): Sanity check that we've inlined everything.
	* tree-optimize.c (tree_rest_of_compilation): Clone functions inlined
	into cloned node.

2003-12-13  Jan Hubicka  <jh@suse.cz>

	* tree-flow.h (tree_ssa_useless_type_conversion_1): Declare.
	* tree-flow.c (tree_ssa_useless_type_conversion_1): Break out from
	from...; allow complex types whose subtypes match.
	(tree_ssa_useless_type_conversion): ... here.

2003-12-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Don't call cleanup_control_expr
	here.  Instead just note that we need to cleanup the cfg (which
	will DTRT).

	* timevar.def (TV_TREE_SSA_THREAD_JUMPS): Kill.
	* tree-dump.c (dump_files): Kill .thread dump.
	* tree.h (TDI_thread_jumps): Kill.
	* tree-flow.h (tree_ssa_dominator_thread_jumps): Kill prototype.
	* tree-optimize.c (optimize_function_tree): Kill call to
	tree_ssa_dominator_thread_jumps.
	* tree-ssa-dom.c (thread_through_phis): Kill.  We no longer need
	to restrict threading through PHIs.
	(tree_ssa_dominator_thread_jumps): Kill.
	(tree_ssa_domiantor_optimize_1): Fold back into
	tree_ssa_dominator_optimize.
	(tree_ssa_dominator_optimize): Mark back edges in the flow graph.
	Kill code which conditionalized the walk_tree callbacks based
	on thread_through_phis.  When threading jumps, reorganize code
	so that we can take the affected variables out of SSA form.
	Mark new variables created by out-of-ssa code as needing to be
	rewritten.
	(thread_across_edge): Always allow threading through phis.
	(thread_jumps_walk_stmts): Kill.

	* tree-ssa.c (create_temp): When we create a new temporary, make
	sure to put it into referenced_vars, give it an ID number and
	a suitable mem_tag.
	(eliminate_build): If we encounter a PHI argument which is an
	SSA_VAR we are not rewriting out of SSA form, then just treat
	it like a constant.
	(rewrite_vars_out_of_ssa): New function.
	* tree-flow.h (rewrite_vars_out_of_ssa): Prototype.
	* tree-ssa-live.c (register_ssa_partitions_for_vars): New function.
	* tree-ssa-live.h (register_ssa_partitions_for_vars): Prototype.

2003-12-12  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (remap_decl): Avoid invalid sharing.
	* cp-tree.h (optimize_function): Kill.
	* optimize.c (optimize_function): Kill.
	* semantics.c (expand_body): Do not call optimize_function.

2003-12-12  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_optimize):  Do not decide inlining when not
	inlining

2003-12-11  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (initialize_inlined_parameters): Disable
	constant propagation for non-gimple-min-invariant when
	preserving gimple form.

2003-12-11  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (widen_bitfield): Clear out unwanted high bits
	even if the field's type is unsigned.
	* tree-ssa-dom.c (record_equivalences_from_stmt): When creating
	equivalences from stores, be more careful about non-constant
	stores to bitfields.

2003-12-11  Diego Novillo  <dnovillo@redhat.com>

	* opts.c (decode_options): Do not enable the tree loop optimizer by
	default.
	* tree-ssa-loop.c (tree_ssa_loop_opt): Remove ENABLE_CHECKING
	guards.

2003-12-10  Richard Henderson  <rth@redhat.com>

	* builtins.c (expand_builtin_profile_func): New.
	(expand_builtin): Use it.
	* builtins.def (BUILT_IN_PROFILE_FUNC_ENTER): New.
	(BUILT_IN_PROFILE_FUNC_EXIT): New.
	* function.c (expand_function_start, expand_function_end): Don't
	do function instrumentation here.
	* gimplify.c (gimplify_function_tree): Do it here.

	* c-opts.c (c_common_post_options): Don't ever use rtl inlining.

2003-12-10  Diego Novillo  <dnovillo@redhat.com>

	* ifcvt.c (dead_or_predicable): Initialize local variable
	'earliest'.
	* tree-cfg.c (verify_stmt): Fix typo.
	* tree-ssa-dom.c (propagate_value): New local function.
	(cprop_into_stmt): Call it.
	(cprop_into_phis): Call it.
	(eliminate_redundant_computations): Call it.

2003-12-10  Dale Johannesen  <dalej@apple.com>

	* tree-dfa.c (compute_alias_sets):  Don't try to make
	GLOBAL_VAR alias itself.

2003-12-08  Steven Bosscher  <stevenb@suse.de>

	* tree-must-alias.c (tree_compute_must_alias): Use
	num_call_clobbered_vars and call_clobbered_var() instead of
	poking in the call_clobbered_vars varray directly.

2003-12-11  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (cgraph_function_possibly_inlined_p): Fix syntax error on
	gcc-2.95.

2003-12-10  Diego Novillo  <dnovillo@redhat.com>

	Revert

	2003-12-07  Richard Henderson  <rth@redhat.com>

		* c-common.c (c_address_looks_like_offsetof): New.
		* c-common.h (c_address_looks_like_offsetof): Declare.
		* c-typeck.c (build_unary_op) <ADDR_EXPR>: Use it.  Don't lower
		address references not destined for offsetof.
		(c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
		when looking for returning address of local variable.
		* expr.c (expand_expr_1): Don't dereference size
		of unbounded arrays.
		* gimplify.c (gimplify_addr_expr): Only fold
		address of variable size array elements.
		* tree-simple.c (is_gimple_min_invariant): Also check
		is_gimple_variable before disallowing offset address for type.
		* tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
		(maybe_fold_offset_to_component_ref): Use it.
		(maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
		(maybe_fold_offset_to_array_ref): Likewise.
		Don't fail for division remainder non-zero.
		* varasm.c (initializer_constant_valid_p) <ADDR_EXPR>: Use
		handled_component_p and look inside references.
		<MINUS_EXPR>: Always look past widening casts.

2003-12-09  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (cgraph_inline_hash): New global variable.
	(cgraph_create_node): Break out of ....
	(cgraph_node): ... this one.
	(cgraph_redirect_edge_callee):  New function.
	(cgraph_remove_node): Aggressively elliminate dead nodes;
	remove node out of clone list.
	(dump_cgraph): Dump inlined_to field; dump uid numbers.
	(cgraph_clone_edge): Return edge created.
	(cgraph_clone_node): New.
	(cgraph_function_possibly_inlined_p): Re-implement using hashtable.
	* cgraph.h: Include hashtab.h
	(struct cgraph_global_info): Kill inline_once, will be output and
	cloned_times fields.  Add inlined_to field.
	(cgraph_node): Add next_clone.
	(cgraph_inline_hash): Declare.
	(cgraph_clone_edge): Update prototype.
	(cgraph_clone_node, cgraph_redirect_callee): Declare.
	* cgraphunit.c (cgraph_optimize_function): Kill.
	(cgraph_assemble_function): Kill next_needed to avoid GGC corruption.
	(cgraph_analyze_function): Do not intialize cloned_times and
	will_be_output.
	(cgraph_finalize_compilation_unit):  Clear next_needed.
	(cgraph_optimize_function): Kill.
	(cgraph_expand_function): Do not use cgraph_optimize_function.
	(cgraph_estimate_growth, cgraph_mark_inline,
	cgraph_check_inline_limits, cgraph_recursive_inlining_p,
	cgraph_preserve_function_body_p): Update for explicit clones.
	(INLINED_TIMES, SET_INLINED_TIMES, cgraph_inlined_into,
	cgraph_inlined_callees, struct cgraph_inline_context,
	cgraph_create_inline_context, cgraph_free_inline_context,
	cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
	cgraph_inline_context_set_callee, cgraph_inline_context_clear_callee,
	update_callee_keys): Kill.
	(cgraph_clone_inlined_nodes, cgraph_mark_inline_edge): New.
	(cgraph_decide_inlining_of_small_functions, (cgraph_decide_inlining,
	cgraph_decide_inlining_incrementally): Simplify.
	* tree-inline.c (typedef struct_inline_data): New field saving_p.
	(copy_body_r): Update all clones.
	(expand_call_inline): Remove inlined cgraph node.
	(save_body): Inicialize id.node and id.saving_p.
	* tree-optimize.c (tree_rest_of_compilation): Maintain clone up-to-date
	in no-unit-at-a-time mode.

2003-12-08  Steven Bosscher  <stevenb@suse.de>

	* tree-optimize.c (optimize_function_tree): Move verify_ssa calls
	into conditionals.

2003-12-08  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_same_points_to_set): Fix memory leak.

2003-12-08  Jeff Law  <law@redhat.com>

	* tree-ssa-live.c (register_ssa_partition): Kill legacy code which
	recursively called register_ssa_partition on PHI arguments when
	SSA_VAR was defined by a PHI_NODE.

2003-12-08  Jan Hubicka  <jh@suse.cz>

	* tree-dump.c (dump_files): Fix ordering of tail call pass.
	* tree.h (tree_dump_index): Likewise.

2003-12-08  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-cfg.o): Add gt-tree-cfg.h dependency.
	(GTFILES): Add tree-cfg.c.
	* tree-cfg.c: Include gt-tree-cfg.h.
	(factored_computed_goto_label, factored_computed_goto):
	Mark gc roots.

2003-12-08  Steven Bosscher  <stevenb@suse.de>
	    Jan Hubicka  <jh@suse.de>

	* gengtype-lex.l (IWOrD): Add HOST_WIDEST_INT
	* Makefile.in (function.o, reg-stack.o): Add missing dependency on
	basic-block.h.
	(GTFILES): Add basic-block.h and hwint.h.
	* basic-block.h (struct edge_def): Add GTY markers, make garbage
	collectable.  Make `insns' field GC safe depending on the setting
	of cfg_hooks.
	(struct basic_block_def): Add GTY markers, make garbage collectable.
	(tree_bb_root, tree_phi_root): Kill extern decls.
	(ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Change from macro to variable
	(entry_exit_blocks): Kill.
	* cfg.c: Include ggc.h
	(bb_pool, edge_pool, entry_exit_blocks): Kill.
	(ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Define.
	(init_flow): Do not create ppols; allocate entry/exit block.
	(free_edge, alloc_block, expunge_block, unchecked_make_edge): Use GGC.
	(compact_blocks): Don't update tree_bb_root and tree_phi_root.
	* cfgrtl.c (rtl_merge_blocks): Clear head pointer.
	* regs.h: Protect against multiple inclusion.
	* tree-cfg.c (obstack_tree_ann_obstack, first_block_tree_and_obj,
	tree_bb_root): Kill.
	(build_tree_cfg, create_bb, remove_bb, delete_tree_cfg): Don't
	touch tree_bb_root and tree_phi_root.
	(create_block_annotations): Do not initialize obstack.
	(free_block_annotations): Do not free obstack.
	(create_block_annotation): Use GGC.
	* tree-dfa.c (tree_phi_root): Kill.
	* tree-flow.h (bb_ann, bb_ann_d): Declare.  Add `phi_nodes' field.
	* tree-phinodes.c (create_phi_node, add_phi_arg, remove_phi_node,
	remove_all_phi_nodes_for): Use `phi_nodes' field in the bb
	annotation instead of tree_phi_root.
	* tree-flow-inline.h (phi_nodes, set_phi_nodes): Likewise.
	(add_dom_child, clear_dom_children): Use GGC.
	* tree-ssa-pre.c (code_motion): Use `phi_nodes' field in the bb
	annotation instead of tree_phi_root.
	* varray.h (union varray_data): Make basic_block_def and edge_def
	varrays garbage collectable.

2003-12-07  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_address_looks_like_offsetof): New.
	* c-common.h (c_address_looks_like_offsetof): Declare.
	* c-typeck.c (build_unary_op) <ADDR_EXPR>: Use it.  Don't lower
	address references not destined for offsetof.
	(c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
	when looking for returning address of local variable.
	* expr.c (expand_expr_1): Don't dereference size of unbounded arrays.
	* gimplify.c (gimplify_addr_expr): Only fold address of variable size
	array elements.
	* tree-simple.c (is_gimple_min_invariant): Also check
	is_gimple_variable before disallowing offset address for type.
	* tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
	(maybe_fold_offset_to_component_ref): Use it.
	(maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
	(maybe_fold_offset_to_array_ref): Likewise.  Don't fail for division
	remainder non-zero.
	* varasm.c (initializer_constant_valid_p) <ADDR_EXPR>: Use
	handled_component_p and look inside references.
	<MINUS_EXPR>: Always look past widening casts.

2003-12-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (compute_dominance_frontiers): Don't assume that
	the first block has index 0.

2003-12-07  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (create_edge): Rename to ...
	(cgraph_create_edge): ... this one; accept call_expr as operand.
	(cgraph_edge): New function
	(cgraph_remove_edge): Use edge as argument
	(cgraph_record_call, cgraph_remove_call): Kill.
	(clone_cgraphedge): New function.
	* cgraph.h (cgraph_edge): Add call_expr argument; add chain_next.
	(cgraph_record_call, cgraph_remove_call): Kill prototype.
	(cgraph_remove_call, cgraph_inline_p): Update prototype.
	(cgraph_clone_edge): Declare.
	* cgraphunit.c (cgraph_finalize_function): Update use of
	cgraph_remove_edge
	(record_call_1): Use cgraph_create_edge; record builtins too.
	(cgraph_create_edges): Accept node instead of decl.
	(cgraph_analyze_function): Update use cgraph_create_edges.
	(cgraph_inline_p): Accept edge.
	* tree-inline.c (inline_data): Replace decl and current_decl
	by node and current_node.
	(copy_body_r): Clone edges.
	(expand_call_inline): Do not create inlined edges.
	(optimize_inline_call): Set id->current_node, id->node.
	* tree-optimize.c (tree_rest_of_compilation): Update cgraph edges after
	compiling.

2003-12-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-loop.c (dump_file, dump_flags): Only declare with
	checking enabled.
	(tree_ssa_loop_opt): Mark arguments with ATTRIBUTE_UNUSED.

2003-12-07  Richard Henderson  <rth@redhat.com>

	* function.h (struct function): Add last_label_uid.
	* tree-cfg.c (set_bb_for_stmt): Use it.
	(delete_tree_cfg): Clear label_to_block_map.

	* gimple-low.c (lower_stmt_body): Export.
	(lower_stmt): Allow data to be null.
	* gimplify.c (declare_tmp_vars): Make static.
	(push_gimplify_context): Export.
	(pop_gimplify_context): Export.  Put the temps somewhere.
	(gimplify_body): Don't declare_tmp_vars here.
	* tree-flow.h, tree-simple.h: Update for new decls.

	* tree-mudflap.c (mf_build_string): New.
	(mudflap_c_function_decls): Push and pop gimplify context, don't
	gimplify here.  Dump pass 1.
	(mudflap_c_function_ops): Similarly.
	(mf_decl_cache_locals): Gimplify eveything as we go along.
	(mf_build_check_statement_for): Likewise.
	(mf_mostly_copy_tree_r): Remove.
	(mf_varname_tree): Use mf_build_string.
	(mf_file_function_line_tree): Rewrite.
	(mf_offset_expr_of_array_ref): Remove.
	(mx_xfn_indirect_ref): Remove.
	(mf_xform_derefs_1): New.
	(mf_xform_derefs): Rewrite to expect gimple.
	(mx_register_decls): Use build_function_call_expr.
	(mudflap_enqueue_constant): Use mf_build_string.
	* tree-optimize.c (tree_rest_of_compilation): Reorder mudflap bits.
	* tree-dump.c (dump_files): Split mudflap to parts 1 and 2.
	* tree.h (enum tree_dump_index): Likewise.

2003-12-06  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-loop.c: New.
	* Makefile.in (tree-ssa-loop.o): New.
	* common.opt (ftree-loop-optimize): Add.
	* flags.h (flag_tree_loop): Declare.
	* opts.c (decode_options): Enable flag_tree_loop at -O1.
	(common_handle_option): Handle OPT_ftree_loop_optimize.
	* timevar.def (TV_TREE_LOOP): New.
	* toplev.c (flag_tree_loop): New.
	(f_options): Add -ftree-loop-optimize.
	* tree-cfg.c (build_tree_cfg): Remove disabled loop optimizer
	initialization.
	(tree_make_forwarder_block): Update phi nodes.
	(tree_loop_optimizer_init): Don't call force_single_succ_latches.
	(tree_try_redirect_by_replacing_jump): Comment fix.
	* tree-dump.c (dump_files): Add .loop dump.
	* tree-flow.h (tree_ssa_loop_opt, set_phi_nodes): Declare.
	* tree-optimize.c (optimize_function_tree): Call tree_ssa_loop_opt.
	* tree.h (enum tree_dump_index): Add TDI_loop.
	* tree-flow-inline.h (set_phi_nodes): New.
	* doc/invoke.texi (-fdump-tree-loop, -ftree-loop-optimize): Document.

2003-12-05  Jeff Law  <law@redhat.com>

	* tree-dfa.c (mark_new_vars_to_rename): Change VARS_TO_RENAME to be
	a "bitmap" instead of an "sbitmap".  Callers updated.
	* tree-must-alias.c (promote_var): Likewise.
	(tree_compute_must_alias): Likewise.
	* tree-phinodes.c (remove_all_phi_nodes_for): Likewise.
	* tree-ssa-dom.c (tree_ssa_dominator_thread_jumps): Likewise.
	(tree_ssa_dominator_optimize): Likewise.
	(tree_ssa_dominator_optimize_1): Likewise.
	* tree-ssa-pre.c (pre_expression): Likewise.
	(tree_perform_ssapre): Likewise.
	* tree-ssa.c (rewrite_into_ssa): Likewise.
	(insert_phi_nodes): If VARS_TO_RENAME is zero, then examine
	each node to determine if we need to insert a PHI.
	(prepare_operand_for_rename): If VARS_TO_RENAME is zero, then
	assume the operand needs renaming.
	* tree-ssa-ccp.c (substitute_and_fold): Change VARS_TO_RENAME to
	be a "bitmap" instead of an "sbitmap".  Callers updated.
	(tree_ssa_ccp): Likewise.  Also make sure timevar_pop encloses
	entire function.
	(scalarize_modify_expr): Likewise.
	* tree-sra.c (create_scalar_copies): Change VARS_TO_RENAME to
	be a "bitmap" instead of an "sbitmap".  Callers updated.
	(tree_sra): Likewise.
	* tree-optimize.c (optimize_function_tree): Make VARS_TO_RENAME
	be a "bitmap" instead of an "sbitmap".
	* tree-flow.h: Update various prototypes.

2003-12-05  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (remove_useless_stmts_goto, remove_useless_stmts): Move
	handling of factored_computed_goto ...
	(disband_implicit_edges): ... here.

2003-12-05  Jan Hubicka  <jh@suse.cz>

	* tree-eh.c (tree_could_trap_p): Fix warning.
	* expr.c (expand_expr): Fix warning on uninitialized last.

2003-12-04  Jeff Law  <law@redhat.com>

	* tree-ssa.c (rewrite_trees): Do not unconditionally overwrite
	variables set by statements.  Let replace_variable do any
	required rewriting.

2003-12-04  Richard Henderson  <rth@redhat.com>

	* c-parse.in (primary): Use annotate_with_locus instead of
	STMT_LINENO for STMT_EXPR.
	* c-simplify.c (gimplify_stmt_expr): Likewise.

2003-12-04  Jan Hubicka  <jh@suse.cz>

	* tree-dump.c (dump_files): Reorder tailcall and mustalias
	* tree.h (tree_dump_index): Likewise.
	* tree-optimize.c (optimize_function_tree): Do tail call after mustalias.

2003-12-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (opf_none, opf_is_def, opf_no_vops): Change to #define.

2003-12-04  Canqun Yang  <canqun@nudt.edu.cn>

	* stor-layout.c (update_alignment_for_field): Export.
	* tree.h (update_alignment_for_field): Declare.

2003-12-03  Andrew Haley  <aph@redhat.com>

	* tree-eh.c (tree_could_trap_p): Add division instructions.
	* expr.c (expand_expr): Check the EH region of an expression and
	mark all the insns that result from its expansion with the
	appropriate REG_EH_REGION.

2003-12-03  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (verify_addr_expr, verify_stmt, tree_node_shared_p,
	verify_stmts):  New functions.
	(verify_flow_info): Remove PHI checking code.
	* tree-flow.h (verify_stmt, verify_stmts): Declare.
	* tree-inline.h (walk_tree, walk_tree_without_duplicates): Move
	prototypes ...
	* tree.h (walk_tree, walk_tree_without_duplicates): ... here.

2003-12-03  Jan Hubicka  <jh@suse.cz>
	    Diego Novillo <dnovillo@redhat.com>

	* tree-ssa.c (verify_def, verify_use, verify_phi_args): New static
	functions.
	(verify_ssa): New global function.
	* tree-flow.h (verify_ssa): Declare.
	* tree-optimize.c (optimize_function_tree): Call it.

2003-12-03  Diego Novillo  <dnovillo@redhat.com>

	* timevar.def (TV_TREE_SSA_VERIFY): New timer.
	* tree-sra.c (create_scalar_copies): Always mark the previous
	variables on the LHS for renaming.
	Do not emit unnecessary assignments from VA_ARG_EXPRs.
	(scalarize_modify_expr): Similarly, when scalarizing the LHS of a
	COMPONENT_REF assignment.
	* tree-must-alias.c (tree_compute_must_alias): Do not promote
	variables with hidden uses.
	* tree-ssa-ccp.c (set_rhs): When replacing the whole statement, reset
	SSA_NAME_DEF_STMT for all the SSA_NAMEs in vdef and def
	operands.

2003-12-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (opf_no_vops): New.
	(add_stmt_operand): Don't create virtual operands when opf_no_vops
	is passed in flags.
	(get_expr_operands): Set opf_no_vops flag before diving into the
	operand of an ADDR_EXPR node.

2003-12-03  Richard Henderson  <rth@redhat.com>

	* tree-simple.c (is_gimple_min_invariant): Disallow offset of
	address of a scalar.

	* c-parse.in (primary): Set STMT_LINENO on STMT_EXPR.
	* c-simplify.c (gimplify_stmt_expr): Be prepared for last_stmt
	to be null.

2003-12-03  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR 13177
	* tree-ssa-pre.c (code_motion): Do phi nodes last, and rearrange
	how we decide what temporary to choose so that we get it right.

2003-12-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dfa.c (get_expr_operands): Don't record VUSEs for invariant
	adresses.

2003-12-03  Brian Booth  <bbooth@redhat.com>

	* tree-pretty-print.c (dump_phi_nodes): Removed superfluous ampersand.

2003-12-03  Jeff Law  <law@redhat.com>

	* ggc-page.c: Resync with mainline sources.  Remove tree-ssa
	specific hack which disabled special GC pagesizes for 2 operand
	tree expressions.

	* tree-ssa.c (mark_def_sites): Call prepare_operand_for_rename
	on the VDEF_RESULT as well, providing a dummy uid argument.

	* tree-phinodes.c: Include rtl.h for ceil_log2.
	(ideal_phi_node_len): New function.
	(resize_phi_node): Make static.
	(make_phi_node): Use ideal_phi_node_len.
	(add_phi_arg): Likewise.
	* tree.h (resize_phi_node): Remove prototype.
	* Makefile.in (tree-phinodes.o): Depend on $(RTL_H).

2003-12-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c: (make_edges): Eliminate fallthru to exit.
	(make_ctrl_stmt_edges): Nonlocal goto handling moved to
	make_goto_expr_edges.
	(make_goto_expr_edges): Remove simple gotos.
	(cfg_remove_useless_stmts_bb): Goto removal cancelled.
	(cleanup_cond_expr_graph, cleanup_switch_expr_graph):
	Replaced by ...
	(cleanup_control_expr_graph): New.
	(cleanup_control_flow): Use it.
	(disband_implicit_edges): New.
	(tree_find_edge_insert_loc): Never insert before a control statement.
	(tree_split_edge, thread_jumps, tree_try_redirect_by_replacing_jump,
	tree_redirect_edge_and_branch): Work over no-gotos form.
	(tree_verify_flow_info): Check no-gotos form invariants.
	* tree-pretty-print.c (pp_cfg_jump, dump_implicit_edges): New.
	(dump_generic_bb_buff): Call dump_implicit_edges.
	* tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
	Declaration removed.
	(cleanup_control_expr_graph, delete_tree_ssa, disband_implicit_edges):
	Declare.
	* tree-optimize.c (tree_ssa_finish): New.
	(optimize_function_tree): Call it.
	* tree-ssa-dom.c (thread_jumps_walk_stmts, optimize_stmt): Use
	cleanup_control_expr_graph.
	* tree-ssa.c (delete_tree_ssa): Export, work even if there are no
	referenced_vars.
	(rewrite_out_of_ssa): Don't call it.

2003-12-03  Jan Hubicka  <jh@suse.cz>

	* tree-ssa.dom.c (tree_ssa_domionator_thread_jumps): Mark back edges.
	(thread_across_edge): Do not thread across loop headers.

	* Makefile.in (tree-optimize.o): Depend on cgraph.h
	* cgraph.h (cgraph_preserve_function_body_p): Declare.
	* cgraphunit.c (cgraph_preserve_function_body_p): New function.
	* tree-optimize.c: Include cgraph.h
	(clear_decl_rtl): Kill.
	(tree_rest_of_compilation): Use cgraph_preserve_function_body_p;
	do not clear DECL_RTL; do final ggc in the pushed context for nested
	functions;

2003-12-02  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Accept and pass down dominator
	walker structure instead of individual varrays.  Callers updated.
	(eliminate_redundant_computations): Likewise.
	(simplify_rhs_and_lookup_avail_expr): Likewise.  Cache and update
	a dummy COND_EXPR when querying the hash tables when transforming
	DIV/MOD into RSHIFT/BIT_AND or ABS_EXPR into NEG_EXPR.
	(dom_opt_walk_stmts): Don't reload the block data pointer each
	iteration of the loop.  Load it once outside the loop.

	* tree-dfa.c (cleanup_operand_arrays): Avoid creating a new
	varray for the vuse operands.

	* tree-ssa-dom.c (extract_range_from_cond): Use int_const_binop to
	avoid creating useless tree nodes.

	* tree-phinodes.c (add_phi_arg): If we receive a new node from
	resize_phi_node, then release the old node and update the PHI
	chain.

2003-12-02  Brian Booth  <bbooth@redhat.com>

	* tree-pretty-print.c (dump_phi_nodes): Added code to always show phi
	nodes of regular gimple scalars.
	(dump_generic_bb_buff): Removed condition upon which to show phi nodes.

2003-12-02  Jan Hubicka  <jh@suse.cz>

	* tree-optimize.c (optimize_function_tree): Invoke ggc_collect in
	between optimization passes.

2003-12-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-sra.c (can_be_scalarized_p): Print details about why something
	could not be scalarized to the dump file.

2003-12-01  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Add tree-phinodes.o.
	(tree-phinodes.o): Add dependencies.
	(GTFILES): Add tree-phinodes.c.
	* tree-phinodes.c: New file.
	* tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
	(add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
	(remove_phi_node, remove_all_phi_nodes_for): Similarly.
	* tree-ssa.c (init_tree_ssa): Initialize PHI node management.
	(delete_tree_ssa): Finalize PHI node management.
	* tree.c (dump_tree_statistics): Dump PHI node stats.
	(make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
	* tree.h (init_phinodes): Prototype.
	(fini_phinodes, release_phi_node): Likewise.
	(phinodes_print_statistics): Likewise.

2003-12-01  Richard Henderson  <rth@redhat.com>

	* tree-dfa.c (get_expr_operands): Don't handle PLUS_EXPR inside
	INDIRECT_REF.
	* tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Use int_const_binop.
	(maybe_fold_offset_to_component_ref): Likewise.
	(maybe_fold_stmt_indirect): Likewise.
	(maybe_fold_stmt_plus): Expand ARRAY_REF when seen with addend.
	* fold-const.c (int_const_binop): Export.
	* tree.h (int_const_binop): Declare.

2003-12-01  Jan Hubicka  <jh@suse.cz>

	* basic-block.h (tree_phi_root): New variable.
	* cfg.c: Include tree-flow.h.
	(compact_blocks): Compact tree_phi_root
	* tree-cfg.c (build_tree_cfg): Initialize tree_phi_root.
	(create_bb, remove_bb, delete_tree_cfg): Update tree_phi_root.
	* tree-dfa.c (tree_phi_root): Declare.
	(create_phi_node, add_phi_arg, remove_phi_node,
	remove_all_phi_nodes_for):  Always use accessor functions for
	getting, varray for setting phis.
	* tree-ssa-pre.c (code_motion): Likewsie.
	* tree-flow-inline.h (phi_nodes): Use varray.
	* tree-flow.h (bb_ann_d): Remove phi_nodes.

	* tree-ssanames.c (free_ssanames): Do not use deleteable GTY flag.

2003-11-30  Jan Hubicka  <jh@suse.cz>

	* tree-optimize.c (tree_rest_of_compilation): Move ggc_collect call to
	the end of function; keep clearing of DECL_SAVED_TREE to the cgraph
	code.

2003-11-30  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_inline_context): New structure.
	(cgrpah_mark_inline, cgraph_check_inline_limits): Use context
	instead of passing all arguments by hand.
	(cgraph_create_inline_context, cgraph_free_inline_context,
	cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
	cgraph_inline_context_set_callee, cgrpah_inline_context_clear_callee,
	cgraph_recursive_inlining_p): New static function.
	(cgraph_decide_inline*):  Reorganize to use context.

2003-11-30  Paul Brook  <paul@nowt.org>

	* Makefile.in (GTFILES): Remove stray '\'.

2003-11-30  Daniel Berlin  <dberlin@dberlin.org>

	* c-config-lang.in: Move tree-alias-* from here
	* Makefile.in (GTFILES): To here.
	* tree-alias-ander.c: Include bitmap.h
	(andersen_function_call): Updated to take address of variables
	in an ADDR_EXPR in a CALL_EXPR.
	* tree-alias-common.h (struct tree_alias_ops): Update arguments to
	function_call.
	* tree-alias-type.h (struct alias_typevar_common): Add varnum.
	* tree-alias-common.c: Include bitmap.h, and function.h.
	s/global_var/pta_global_var/g.
	(addrargs): New static variable.
	(pta_global_var): Ditto.
	(find_func_decls): Remove.
	(find_func_aliases): Take one argument, update all callers.
	Handle (cast) [addr-expr] [var].
	Handle COMPONENT_REF of an  INDIRECT_REF.
	Pass info about ADDR_EXPR arguments to function_call function.
	(deal_with_call_aliasing): New function.
	(call_may_return): New function.
	(get_alias_var_decl): Call find_func_aliases on the DECL_INITIAL
	of a global var.
	Use ALIAS_TVAR_VARNUM, instead of VARRAY_ACTIVE_SIZE (alias_vars) - 1.
	(get_alias_var): Handle REALPART_EXPR and IMAGPART_EXPR.
	Return NULL in default case.
	(intra_function_call): Remove wrong code.
	(create_fun_alias_var): Use simple_assign, not addr_assign.
	Set up ALIAS_TVAR_VARNUM when creating an alias var.
	(create_fun_alis_var_ptf): Ditto on ALIAS_TVAR_VARNUM.
	(create_alias_var): Ditto.
	(create_alias_vars):  Build pta_global_var here.
	Walk unexpanded_var_list.
	Walk the statements in basic blocks.
	(delete_alias_vars): Correct ip_partial case.
	Free addrargs.
	(init_alias_vars): Create addrargs.

2003-11-29  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (tree-ssanames.o): Depend on gt-tree-ssanames.h.
	(tree-eh.o): Depend on gt-tree-eh.h.
	(gr-tree-ssanames.h, gt-tree-eh.h): New targets.
	(GTFILES): Add tree-ssanames.c, tree-eh.c
	* tree-eh.c: Include ggc.h and gt-tree-eh.h
	(lower_eh_constructs): Allecate throw_stmt_table in ggc.
	* tree-ssanames.c: Include ggc.h and gt-tree-ssanames.h

	* function.h (struct function): Add saved_tree/saved_args.
	* toplev.c (rest_of_compilation): Move code to  clear cfun and
	DECL_SAVED_INSNS and call to ggc_collect to ...
	* tree-optimize.c (tree_rest_of_compilation): ... this function. Use
	cfun to save/restore function body.

2003-11-28  Richard Henderson  <rth@redhat.com>

	* gimplify.c (create_tmp_var_raw): Split out from create_tmp_var.
	(create_tmp_var): Use it.
	(create_tmp_alias_var): Remove.
	* tree-alias-common.c, tree-dfa.c: Use create_tmp_var_raw instead.
	* tree-simple.h: Update decls.

2003-11-28  Richard Henderson  <rth@redhat.com>

	* gimple-low.c (lower_function_body): Call lower_bind_expr
	to handle the outermost BIND_EXPR.

2003-11-28  Jan Hubicka  <jh@suse.cz>

	* tree-ssa.c (remove_annotations_r): Kill.
	(delete_tree_ssa): Remove annotations using statement walk;
	kill argument fndecl.
	(rewrite_out_of_ssa): Update call.

2003-11-27  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (register_ssa_partition): Abort if a virtual SSA
	version is registered.
	(create_ssa_var_map): Always process PHI nodes.
	* tree-ssa.c (Eliminate_virtual_phis): Rename from
	eliminate_extraneous_phis, and look specifically for virtuals.
	(rewrite_out_of_ssa): Eliminate virtual PHI nodes before building
	partitions.

2003-11-27  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-ccp.c (get_strlen): Mark the visited variables.
	(ccp_fold_builtin): Changed due to changed calling convention of
	get_strlen.

2003-11-26  Diego Novillo  <dnovillo@redhat.com>

	Revert

	2003-11-25  Jeff law  <law@redhat.com>

	    * Makefile.in (OBJS-common): Add tree-phinodes.o.
	    (tree-phinodes.o): Add dependencies.
	    * tree-phinodes.c: New file.
	    * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
	    (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
	    (remove_phi_node, remove_all_phi_nodes_for): Similarly.
	    * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
	    (delete_tree_ssa): Finalize PHI node management.
	    * tree.c (dump_tree_statistics): Dump PHI node stats.
	    (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
	    * tree.h (init_phinodes): Prototype.
	    (fini_phinodes, release_phi_node): Likewise.
	    (phinodes_print_statistics): Likewise.

2003-11-25  Jan Hubicka  <jh@suse.cz>

	* tree-mustalias.c (promote_var): Do not clear
	may_point_to_global_mem.

2003-11-25  Jeff law  <law@redhat.com>

	* domwalk.c (walk_dominator_tree): Indicate to the block local
	data initializer if the block local data is new or recycled.
	* domwalk.h (struct dom_walk_data): Corresponding changes.
	* tree-ssa-dom.c (dom_opt_initialize_block_local_data): Accept and use
	"recycled" argument.  For recycled structures, only clear varrays
	that have been initialized.  For new blocks, do not initialize
	varrays here.
	(dom_opt_finalize_block): When threading across edges, if the
	true/false varrays have not been initialized, then the limit is zero.
	Only clear block local varrays that have been initialized.
	(record_equivalences_from_incoming_edge): If necessary, initialize
	block local const_and_copies.
	(dom_opt_walk_stmts): If necessary, initialize block local
	stmts_to_rescan.
	(record_var_is_nonzero): If necessary, initialize block local
	nonzero_vars.
	(record_cond_is_true): If necessary, initialize block local
	true_exprs.
	(record_cond_is_false): If necessary, initialize block local
	false_exprs.
	(lookup_avail_expr): If necessary, initialize block local
	avail_exprs.
	(record_range): If necessary, initialize block local vrp_varaibles.
	* tree-ssa.c
	* tree-ssa.c (rewrite_initialize_block_local_data): Accept and use
	"recycled" argument.  For recycled structures, only clear varrays
	that have been initialized.  For new blocks, do not initialize
	varrays here.
	(rewrite_finalize_block): Only clear block local varrays that have
	been initialized.
	(register_new_def): If necessary, initialize block local defs.

	* tree-ssa-dom.c (get_eq_expr_value): Return a struct rather than
	a tree node.
	(record_equivalences_from_incoming_edge): Corresponding changes.
	(find_equivalent_equality_comparison): Use tree_int_cst_XXX rather
	then building and folding nodes.
	(simplify_cond_and_lookup_avail_expr): Likewise.

	* Makefile.in (OBJS-common): Add tree-phinodes.o.
	(tree-phinodes.o): Add dependencies.
	* tree-phinodes.c: New file.
	* tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
	(add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
	(remove_phi_node, remove_all_phi_nodes_for): Similarly.
	* tree-ssa.c (init_tree_ssa): Initialize PHI node management.
	(delete_tree_ssa): Finalize PHI node management.
	* tree.c (dump_tree_statistics): Dump PHI node stats.
	(make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
	* tree.h (init_phinodes): Prototype.
	(fini_phinodes, release_phi_node): Likewise.
	(phinodes_print_statistics): Likewise.

2003-11-25  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (save_body): New body
	* tree-inline.h (save_body): Declare.
	* tree-optimize.c (tree_rest_of_compilation): Save function tree
	properly.

2003-11-24  Richard Henderson  <rth@redhat.com>

	* gimplify.c (canonicalize_addr_expr): New.
	(gimplify_conversion): Use it.  Canonicalize after nop cast removal.
	* tree-simple.c (is_gimple_min_invariant): Remove STRING_CST cast
	special case.

2003-11-24  Jeff Law  <law@redhat.com>

	* flow.c (count_or_remove_death_notes_bb): New.  Extracted from
	count_or_remove_death_notes.
	(count_or_remove_death_notes): Use EXECUTE_IF_SET_IN_SBITMAP.

2003-11-24  Richard Henderson  <rth@redhat.com>

	PR 13174, PR 13143
	* gimplify.c (cpt_same_type): Allow different ARRAY_TYPEs with
	the same base type.

2003-11-24  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR/13163
	* tree-ssa-pre.c (append_eref_to_block): Delete.
	(insert_euse_in_preorder_dt_order_1): Ditto.
	(insert_one_operand): Take an extra argument, because
	avdefs may need to be changed.
	(clear_all_eref_arrays): Use FOR_ALL_BB.
	(insert_occ_in_preorder_dt_order): Stop appending to bb eref arrays.
	Use FOR_ALL_BB.
	(insert_euse_in_preorder_dt_order): Rewrite to just build a new varray
	with only the EPHI's and EUSE's, and then sort it.
	(pre_expression): Don't use bb based erefs array when printing
	expressions.
	(split_critical_edges): Just use FOR_ALL_BB.
	(tree_perform_ssapre): Pre-split entry block successor edge if the
	successor block has multiple preds.

	* tree-flow.h (struct bb_ann_d): Remove erefs varray.

2003-11-24  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (cleanup_tree_cfg): FOR_EACH_BB -> FOR_ALL_BB when
	clearing dom children, because the entry block has dom_children
	too.
	* tree-ssa.c (build_dominator_tree): Ditto.

2003-11-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (compute_dominance_frontiers_1,
	compute_dominance_frontiers): Move from ssa.c.
	* tree-flow.h (compute_dominance_frontiers): Declare.
	* Makefile.in (tree-ssa.o, tree-ssa-live.o, tree-ssa-pre.o,
	tree-optimize.o): Don't depend on ssa.h.
	* tree-ssa.c: Don't include ssa.h.
	* tree-ssa-live.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-optimize.c: Likewise.

2003-11-24  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (fold):  Do not return early when
	optimizing COMPONENT_REF and constant.

2003-11-24  Richard Henderson  <rth@redhat.com>

	* objc/objc-act.c (build_protocol_expr): Use convert instead of
	smashing TREE_TYPE.

2003-11-23  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.h (SSANORM_PERFORM_TER, SSANORM_COMBINE_TEMPS,
	SSANORM_REMOVE_ALL_PHIS): New flag macros.
	* tree-ssa.c (replace_variable): Return true if var was rewritten.
	(eliminate_extraneous_phis): Dump var map to file if checking triggers
	an abort.
	(rewrite_trees): Set modified_stmt if stmt was changed.
	(remove_ssa_form): Move more of rewrite_out_of_ssa to make it serve
	all the same functions based on new flags in tree-ssa-live.h.
	(rewrite_out_of_ssa): Call remove_ssa_form.

2003-11-23  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (tree_verify_flow_info): Check that ENTRY/EXIT block
	has no instructions associated with it.

2003-11-22  Jeff Law  <law@redhat.com>

	* tree-ssa-names.c (release_ssa_name): Use SSA_NAME_IN_FREE_LIST
	instead of checking SSA_NAME_DEF_STMT being null.
	* tree.h (SSA_NAME_DEF_STMT): Use chain field rather than the
	def_stmt field.
	(SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Use existing flag from tree_common.
	(SSA_NAME_IN_FREE_LIST): Define.
	(struct tree_ssa_name): Kill DEF_STMT and OCCURS_IN_ABNORMAL_PHI fields.

2003-11-22  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-pretty-print.c (dump_generic_node): Remove superfluous ';'.

2003-11-22  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (simple-break-elim.o): Remove.
	(simple-goto-elim.o): Remove.
	(tree-dchain.o): Remove.
	* simple-break-elim.c: Remove.
	* simple-goto-elim.c: Remove.
	* tree-dchain.c: Remove.
	* tree-dchain.h: Remove.

2003-11-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (build_dfs_id_array_1): > should be >=
	(build_dfn_array): Ditto.

2003-11-21  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-dfa.o): Add dependency on $(TREE_DUMP_H)
	* tree-dfa.c: Include tree-dump.h
	(compute_alias_sets): Call dump_function_to_file.
	(may_access_global_mem_p): Check if the base address of _REF nodes
	may point to global memory.

	* cfgcleanup.c (try_crossjump_to_edge): Initialize newpos1 and
	newpos2.

2003-11-21  Jeff Law  <law@redhat.com>

	Revert:

	2003-11-21  Jan Hubicka  <jh@suse.cz>

		* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
		* tree-must-alias.c (tree_compute_must_alias): promote pointers.
		(find_addressable_vars):  Deal with complex constant
		expressions; do not clear may_point_to_global_mem.

2003-11-21  Jeff Law  <law@redhat.com>

	* Makefile.in (domwalk.o): Depend on $(GGC_H).
	* domwalk.c: Include ggc.h.
	(walk_dominator_tree): Manage allocation/deallocation and
	pushing/popping of the toplevel block data pointer here.
	Use callback to initialize the block local data.
	(init_walk_dominator_tree): New function.
	(fini_walk_dominator_tree): Likewise.
	* domwalk.h (struct dom_walk_data): Add callback to initialize
	block local data.  Add field for sizeof block local data.
	Add "private" field free_block_data.
	(init_dominator_tree, fini_dominator_tree): Prototype.
	* tree-ssa-dom.c (dom_opt_initialize_local_data): New function.
	(tree_ssa_dominator_optimize_1): Initialize new fields in the
	dominator walker structure.  Initialize and finalize the dominator
	walker.  Slightly reorder code to make it more readable..
	(dom_opt_initialize_block): No longer deal with allocation and
	initialization of block local data.
	(dom_opt_finalize_block): Similarly for deallocation of block
	local data.
	* tree-ssa.c (rewrite_block_data): New structure.
	(rewrite_initialize_block_local_data): New function.
	(rewrite_initialize_block): No longer deal with allocation and
	initialization of block local data.
	(rewrite_into_ssa): Initialize new fields in the dominator walker
	structure.  Initialize and finalize the dominator walker.
	(rewrite_initialize_block): No longer deal with allocation and
	initialization of block local data.
	(rewrite_optimize_stmts): Deal with changes in the dominator
	walker structure.
	(rewrite_finalize_block): No longer with deallocation of block
	local data.

	* tree-dfa.c (add_vdef, cleanup_voperand_arrays): Use NUM_VDEFS.
	(mark_new_vars_to_rename, collect_dfa_status_r): Likewise.
	* tree-pretty-print.c (dump_vops): Likewise.
	* tree-sra.c (create_scalar_copies): Likewise.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
	* tree-ssa-live.c (create_ssa_var_map): Likewise.
	(calculate_live_on_entry): Likewise.
	* tree-ssa-pre.c (process_left_occs_and_kills): Likewise.
	* tree-ssa.c (mark_def_sites, rewrite_stmt): Likewise.
	* tree.h (NUM_VDEFS): Define.
	* tree-ssa-ccp.c (visit_stmt): Use NUM_VDEFS.  Fix thinko in last
	change.
	(initialize): Use NUM_VDEFS.

	* tree-dfa.c (add_vdef): Revamp to handle new method for
	recording vdefs.
	(cleanup_operand_arrays): Similarly.
	* tree-sra.c (create_scalar_copies): Similarly.
	* tree-ssa-ccp.c (visit_stmt, initialize): Similarly.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Similarly.
	* tree-ssa-dom.c (cprop_into_stmt): Similarly.
	(record_equivalences_from_stmt): Similarly.
	* tree-ssa-live.c (create_ssa_var_map): Similarly.
	(calculate_live_on_entry): Similarly.
	* tree-ssa.c (mark_def_sites, rewrite_stmt): Similarly.
	* tree-ssa-pre.c (process_left_occr_and_kills): Similarly.
	* tree-inline.c (estimate_num_insns_1): Kill VDEF_EXPR.
	* tree-pretty-print.c (dump_generic_node) Kill VDEF_EXPR.
	(dump_vops): Dump VDEFs here.
	* tree.c (build_vdef_expr): Kill.
	* tree.h (build_vdef_expr): Kill prototype.
	(VDEF_RESULT, VDEF_OP): Revamp to handle new method for recording
	vdefs.
	* tree.def (VDEF_EXPR): Kill.

	* tree-cfg.c (cfg_remove_useless_stmts): Set both VAR and VAL to
	NULL anytime one of them is determined to be invalid.

2003-11-21  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (compact_var_map): Fix typo.  Clear correct field.
	(calculate_live_on_entry): Remove unneeded stmt.
	* tree-ssa-live.h (version_to_var): New.  Return variable associated
	with a specific SSA version.
	* tree-ssa.c (eliminate_build): Add check that ignored results don't
	have important arguments.  Allow ignored results.
	(coalesce_abnormal_edges): Allow non-relevant results to be ignored.
	(eliminate_extraneous_phis): Allow non-relevant results.  Check that
	no important arguments are being missed.
	(coalesce_vars): Non-partition variables are allowed now, just ignored.
	(rewrite_trees): New.  Split out from rewrite_out_of_ssa.  Perform tree
	rewriting step.
	(remove_ssa_form): New.  Allow rewriting of just specified variables.
	(rewrite_out_of_ssa): Use rewrite_trees and reorganize slightly to
	accommodate typechecking in eliminate_extraneous_phis.

2003-11-21  Jan Hubicka  <jh@suse.cz>

	* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
	* tree-must-alias.c (tree_compute_must_alias): promote pointers.
	(find_addressable_vars):  Deal with complex constant expressions;
	do not clear may_point_to_global_mem.

2003-11-21  Jan Hubicka  <jh@suse.cz>

	* parser.c (cp_parser_postfix_expression): Initialize 's' to
	NULL_TREE.

2003-11-20  Richard Henderson  <rth@redhat.com>

	* Makefile.in (bitmap.o-warn, caller-save.o-warn, combine.o-warn,
	cgraphunit.o-warn, c-semantics.o-warn, emit-rtl.o-warn, expr.o-warn,
	fold-const.o-warn, genattrtab.o-warn, regmove.o-warn, tree.o-warn,
	varasm.o-warn, f/expr.o-warn, profile.o-warn): Remove.
	* bitmap.c (bitmap_first_set_bit): Abort if no non-zero word found.
	(bitmap_last_set_bit): Likewise.
	* combine.c (get_pos_from_mask): Always set *plen.

2003-11-20  Richard Henderson  <rth@redhat.com>

	* tree-dfa.c (get_expr_operands): Remove handling of PLUS_EXPR
	inside INDIRECT_REF.

2003-11-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-nomudflap.c (nogo): Fix prototype.

2003-11-20  Richard Henderson  <rth@redhat.com>

	* except.c (output_function_exception_table): Strip nops.
	* gimplify.c (gimplify_addr_expr): Kill missing cast workaround.
	(cpt_same_type, check_pointer_types_r): New.
	(gimplify_body): Call it.
	* tree-inline.c (insert_decl_map): New.
	(remap_decl, remap_type, remap_block, copy_body_r,
	initialize_inlined_parameters, declare_return_variable,
	remap_save_expr, mark_local_for_remap_r): Use it.

2003-11-20  Frank Ch. Eigler  <fche@redhat.com>

	libstdc++/11696
	* c-pragma.c (handle_pragma_redefine_extname): Define always.
	(init_pragma): Activate #pragma redefine_extname for mudflap.

	* tree-inline.c (copy_tree_r): Propagate mf_marked-ness.
	* tree-mudflap.c (mudflap_c_function): Break into new
	_decls and _ops functions.
	(mudflap_c_function_decls): Avoid unnecessary tree copying.
	(mudflap_c_function_ops): Ditto.  Gimplify explicitly only for
	tree dumping.
	* tree-nomudflap.c: Add new stub functions.  Simplify error
	message emission throughout.
	* tree-mudflap.h: Corresponding changes.
	* tree-optimize.c (tree_rest_of_compilation): Call the _decl
	instrumentation before gimplification and ssa optimizations;
	call the _ops instrumentation after ssa optimizations.

2003-11-20  Diego Novillo  <dnovillo@redhat.com>

	Initial fix for PR optimization/12747

	* Makefile.in (OBJS): Add tree-sra.o
	* common.opt (ftree-sra): Add.
	* flags.h (flag_tree_sra): Declare.
	* gimplify.c (gimplify_addr_expr): Set TREE_INVARIANT
	when producing and address expression for a DECL node.
	* opts.c (decode_options): Enable SRA at -O1.
	(common_handle_option): Handle -ftree-sra.
	* timevar.def (TV_TREE_SRA): New timer.
	* toplev.c (flag_tree_sra): Define.
	* tree-cfg.c (stmt_ends_bb_p): Declare extern.
	(bsi_replace): Add boolean argument to specify whether to
	preserve EH region information.  Update all callers.
	(bsi_commit_edge_inserts): Also check the edge from ENTRY_BLOCK_PTR
	to basic block 0.
	Move loop body ...
	(bsi_commit_edge_inserts_1): ... here.
	* tree-dump.c: Add dump for SRA pass.
	* tree.h (enum tree_dump_index): Modify accordingly.
	(STRIP_USELESS_TYPE_CONVERSION): Define.  Update all callers to
	tree_ssa_useless_type_conversion.
	* tree-eh.c (add_stmt_to_eh_region): New function.
	* tree-flow.h (stmt_ends_bb_p): Declare.
	(add_stmt_to_eh_region): Declare.
	(tree_sra): Declare.
	(enum bsi_iterator_update): Mirror entries in
	enum tsi_iterator_update.
	* tree-optimize.c (optimize_function_tree): Call SRA pass
	after must-alias.
	* tree-sra.c: New file.
	* doc/invoke.texi: Document -ftree-sra and -fdump-tree-sra.

2003-11-20  Andrew Macleod  <amacleod@redhat.com>

	* tree-ssa.c (check_replaceable): Return false if the LHS is a
	DECL_HARD_REGISTER.

2003-11-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (set_rhs): Replace with an empty statement when
	the replacement has no side effects.

2003-11-20  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Kill tree-ssa-copyprop.o.
	(tree-ssa-copyprop.o): Kill dependencies clause.
	* common.opt (tree-copyprop): Kill option.
	* flags.h (flag_tree_copyprop): Kill.
	* opts.c (decode_options): Don't set flag_tree_copyprop.
	(common_handle_option): Kill handling of -ftree-copyprop.
	* timevar.def (TV_TREE_COPYPROP): Kill.
	* toplev.c (flag_tree_copyprop): Kill.
	(lang_independent_options): Kill -ftree-copyprop.
	* tree-dump.c (dump_files): Kill .copyprop dump.
	* tree-flow.h (tree_ssa_copyprop): Kill prototype.
	(propagate_copy): Move prototype.
	* tree-optimize.c (optimize_function_tree): Kill -ftree-copyprop stuff.
	* tree.h (tree_dump_index): Kill TDI_copyprop.
	* tree-ssa-copyprop.c: Kill.
	* tree-ssa-dom.c (propagate_copy): Moved here from tree-ssa-copyprop.c.

	* tree-ssanames.c (free_ssanames): No longer a varray.
	(init_ssanames, make_ssa_name, release_ssa_name): Corresponding changes.

2003-11-20  Steven Bosscher  <stevenb@suse.de>

	* tree-ssanames.c (ssanames_print_statistics): Use ISO function
	declaration.  Print unsigned ints, not usinged longs.

2003-11-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (rename_1): This should be static.
	(append_eref_to_block): Don't gc allocate.
	(clear_all_eref_arrays): Free the array rather than
	clear them.
	(rename_1): Ditto on both counts.
	(free_expr_info): Free the arrays.
	(collect_expressions): Don't gc allocate the arrays.

2003-11-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (insert_one_operand): Handle self-referential
	ephi's properly.

2003-11-19  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (true_exprs, false_exprs): New hash tables.
	(nonzero_vars): New varray.
	(dom_walk_block_data): Add true_exprs, false_exprs and nonzero_vars.
	(get_value_for, set_value_for): Accept additional argument indicating
	which table to use.  Callers updated.
	(tree_ssa_dominator_optimize_1): Initialize and wipe our new hash
	tables and varray appropriately.
	(dom_opt_initialize_block): Initialize new block local varrays for
	true expressions, false expressions and nonzero vars.  Update call
	to record_equivalences_from_incoming_edge.
	(dom_opt_finalize_block): Put equivalences from taken edges
	into the true_exprs and false_exprs hash tables.  Restore global
	state for true_exprs, false_exprs and nonzero_vars  too.
	(record_equivalences_from_incoming_edge): Accept dom_walk structure
	instead of a gazillion varrays.  Pass down block local
	true_exprs, false_exprs and nonzero_vars varrays to various children.
	(optimize_stmt):  Accept block local nonzero_vars argument.  Pass
	new varrays down to record_equivalences_from_stmt.
	(thread_jumps_walk_stmt): Pass new varrays down to
	record_equivalences_from_stmt.
	(dom_opt_walk_stmt): Pass new varrays down to optimize_stmt.
	(dump_dominator_optimizer_statistics): Dump new hash tables.
	(record_cond_is_true, record_cond_is_false): Record info into
	the true/false hash tables/varrays instead of the main expression
	varrays.  Don't create useless tree nodes.
	(record_var_is_nonzero): New function.
	(record_equivalences_from_stmt): Don't generate useless tree nodes.
	(lookup_avail_expr): Consult nonzero_vars and the true/false
	expression tables as well.
	(get_eq_expr_value): Record local true/false expressions in the
	local true/false varrays rather than the main local expression
	varray.
	(true_false_expr_hash, true_false_expr_eq): New functions.

	* Makefile.in (OBJS-sommon): Add tree-ssanames.o.
	(tree-ssanames.o): Add dependencies.
	* tree-dfa.c (remove_phi_node): Release SSA_NAME expression when
	we remove the PHI node.
	(remove_all_phi_nodes_for): Similarly.
	* tree-ssa.c (prepare_operand_for_rename): Similarly when we
	strip away an SSA_NAME expression from an operand.
	(init_tree_ssa): Call the SSA_NAME initializer.
	(delete_tree_ssa): Call the SSA_NAME finalizer.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Clear the
	const_and_copies and vrp_data virtual arrays.
	* tree-ssanames.c: New file for management of SSA_NAME expressions.
	* tree.h: Prototypes for functions exported by tree-ssanames.c.
	* tree-flow.h, tree-ssa-ccp.c, tree-ssa-dce.c: Use highest_ssa_version
	rather than next_ssa_version.
	* tree-ssa-dom.c, tree-ssa-live.c, tree-ssa.c: Similarly.
	* tree.c (dump_tree_statistics): Call into tree-ssaname statistics
	dumper too.
	(make_ssa_name): Kill.  Now in tree-ssanames.c

2003-11-18  Richard Henderson  <rth@redhat.com>

	* tree.c (recompute_tree_invarant_for_addr_expr): Split out from ...
	(build1): ... here.
	* tree.h: Declare it.
	* gimplify.c (gimplify_addr_expr): Use it.
	* tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Split out
	from fold_indirect_refs_r.
	(maybe_fold_stmt_indirect): Likewise.
	(maybe_fold_offset_to_component_ref): New.
	(maybe_fold_stmt_plus): New.
	(fold_stmt_r): Rename from fold_indirect_refs_r.
	(fold_stmt): Strip more useless type conversions.

2003-11-18  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (dump_function_to_file): Mind when cfun is null.

2003-11-18  Diego Novillo  <dnovillo@redhat.com>

	Revert

	2003-11-18  Jan Hubicka  <jh@suse.cz>

		* tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
		* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.

	2003-11-18  Jan Hubicka  <jh@suse.cz>

		* Makefile.in (sibcall.o): Kill.
		(tree-tailcall.o): Add except.h dependency
		* sibcall.c: Kill.
		(purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
		* calls.c (purge_reg_equiv_notes,
		purge_mem_unchanging_flag) ... here.
		(expand_call): Do not produce placeholders; do
		not deal with tail recursion; update
		equivalencies after sibcall production.
		* toplev.c (rest_of_handle_sibling_calls): Kill.
		(rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
		* tree-dump.c (dump_files): Add tail2
		* tree-flow.h (tree_optimize_tail_calls): Update prototype.
		* tree-optimize.c (optimize_function_tree): Do
		tail optimization twice.
		* tree-tailcall.c: Inlucde except.h
		(suitable_for_tail_call_opt_p): New.
		(optimize_tail_call): Add opt_tailcalls argument;
		optimize tailcalls.
		(tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
		* tree.h (CALL_EXPR_TAILCALL): New.
		(tree_dump_index): Add tail2

2003-11-18  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
	* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.

2003-11-18  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Disable tail
	call optimizations.

2003-11-18  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (sibcall.o): Kill.
	(tree-tailcall.o): Add except.h dependency
	* sibcall.c: Kill.
	(purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
	* calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
	(expand_call): Do not produce placeholders; do not deal with tail
	recursion; update equivalencies after sibcall production.
	* toplev.c (rest_of_handle_sibling_calls): Kill.
	(rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
	* tree-dump.c (dump_files): Add tail2
	* tree-flow.h (tree_optimize_tail_calls): Update prototype.
	* tree-optimize.c (optimize_function_tree): Do tail optimization twice.
	* tree-tailcall.c: Inlucde except.h
	(suitable_for_tail_call_opt_p): New.
	(optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
	(tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
	* tree.h (CALL_EXPR_TAILCALL): New.
	(tree_dump_index): Add tail2

2003-11-18  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (thread_across_edge): Lose block_avail_exprs argument.
	Callers updated.  Pass NULL for block_avail_exprs in call to
	lookup_avail_expr.  Record both the condition and the inverted
	condition when threading across an edge.

2003-11-18  Richard Henderson  <rth@redhat.com>

	* tree-ssa.c (tree_ssa_useless_type_conversion): Use TYPE_MAIN_VARIANT
	when compariing pointer types too.

2003-11-18  Jan Hubicka  <jh@suse.cz>

	* tree-dump.c (dump_files): Reorder tail calls.
	* tree-optimize.c (optimize_function_tree): Likewise
	* tree-tailcall.c (optimize_tail_call, eliminate_tail_call): Remove
	variable tmpvars; update SSA.
	(suitable_for_tail_opt_p): Do not give up because of static variables.
	(find_tail_calls):  Track return values in SSA graph.
	* tree.c (make-phi_node): Do not create new SSA name when operand
	already is.
	* tree.h (enum tree_dump_index): Reorder tail call.

2003-11-17  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_call_expr): Change gimple_test_f argument to
	return bool type.
	(mark_decls_volatile_r): New local function.
	(gimplify_expr): Make gimple_test_f return bool type.
	Call mark_decls_volatile_r when gimplifying VA_ARG_EXPR.
	* tree-dfa.c (struct walk_state): Remove field is_va_arg_expr.
	Update all callers.
	(opf_force_vop): Remove.  Update all users.
	(add_stmt_operand): Re-structure to add real operands only for
	GIMPLE register variables.
	(find_vars_r): Don't handle VA_ARG_EXPR nodes.
	(add_referenced_var): Also assign a UID to variables with hidden
	uses.
	Call is_gimple_call_clobbered to determine if a variable is call
	clobbered.
	(get_memory_tag_for): Mark memory tags volatile and static.
	* tree-flow.h (struct var_ann_d): Remove field is_in_va_arg_expr.
	Update all users.
	* tree-simple.c (is_gimple_*): Change return type to bool.  Update
	all users.
	(is_gimple_reg_type): Return true only for non aggregate types.
	(is_gimple_non_addressable_1): New local function.
	(is_gimple_reg): Call it.
	(is_gimple_non_addressable): New function.
	(is_gimple_call_clobbered): New function.
	* tree-simple.h (is_gimple_*): Change return type to bool.

2003-11-17  Jason Merrill  <jason@redhat.com>

	PR c++/11266
	* gimplify.c (gimple_add_tmp_var): Also make sure
	seen_in_bind_expr isn't set.
	(mostly_copy_tree_r): Don't copy a TARGET_EXPR.
	(gimplify_target_expr): Only expand a TARGET_EXPR the first time
	we see it.

2003-11-17  Richard Henderson  <rth@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Use %u not %x for
	printing DECL_UID.

2003-11-16  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_add_case_label): Use create_artificial_label.
	* tree-simple.h (create_artificial_label): Move decl ...
	* tree.h: ... here.

2003-11-16  Richard Henderson  <rth@redhat.com>

	PR c++/12770
	* gimple-low.c (lower_stmt_body): Take a tree, not a tree*.
	(lower_stmt): Handle EH nodes.
	(lower_bind_expr): Remove fixme.
	(block_may_fallthru): Move from tree-eh.c.  Handle COND_EXPR,
	BIND_EXPR, and TRY_FINALLY_EXPR.
	(lower_cond_expr): Use it.
	* tree-eh.c (collect_finally_tree): Ignore COND_EXPR and BIND_EXPR.
	(replace_goto_queue_cond_clause): New.
	(replace_goto_queue_1): Use it.  Split out statement_list handling.
	(replace_goto_queue_stmt_list): New.
	(-block_may_fallthru): Move to gimple-low.c.
	(lower_eh_constructs_1): Ignore BIND_EXPR.
	* tree-flow.h (block_may_fallthru): Declare.

	* tree-dump.c (dump_files): Exchange .eh and .lower passes.
	* tree-optimize.c (tree_rest_of_compilation): Likewise.
	* tree.h (enum tree_dump_index): Likewise.

2003-11-16  Jason Merrill  <jason@redhat.com>

	* gimplify.c (mostly_copy_tree_r): Don't walk into a BLOCK.

	* tree-inline.c (walk_tree): Don't walk into the BIND_EXPR_VARS
	of a BIND_EXPR.
	* c-common.c (c_walk_subtrees): Don't walk into the decl of a
	DECL_STMT.

	PR optimization/11269
	* dwarf2out.c (gen_subprogram_die): Generate a DIE for a named
	return value.
	(loc_descriptor_from_tree): Treat RESULT_DECL like VAR_DECL.
	(add_location_or_const_value_attribute): Likewise.
	(add_bound_info): Likewise.
	(gen_decl_die): Likewise.

2003-11-16  Jason Merrill  <jason@redhat.com>

	* c-pretty-print.c (debug_c_tree): Restore removed fn.
	* diagnostic.h: Declare it.

	* tree-pretty-print.c (dump_generic_node): Use DECL_UID when
	dumping anonymous decls.

2003-11-16  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (last_and_only_stmt): New.
	* tree-flow.h (last_and_only_stmt): Declare.
	* tree-ssa-dom.c (thread_across_edge): Use it.

	* tree-cfg.c (tree_block_forwards_to): Don't check for empty stmts.
	(tree_forwarder_block_p): Likewise.
	* tree-dfa.c (get_stmt_operands): Likewise.
	* tree-ssa-ccp.c (set_rhs): Likewise.
	* tree-ssa-dom.c (optimize_stmt): Likewise.
	* tree-ssa.c (rewrite_stmt): Likewise.

2003-11-16  Richard Henderson  <rth@redhat.com>

	* tree.h (LABEL_DECL_UID): Rename from LABEL_DECL_INDEX.
	* tree-flow.h (bsi_remove): Declare.
	* tree-flow-inline.h (bsi_remove): Move ...
	* tree-cfg.c (set_bb_for_stmt): Don't re-set LABEL_DECL_UID.
	Verify that a label isn't already in a block before adding it.
	(bsi_remove): Move from tree-flow-inline.h, clear bb.
	* tree-pretty-print.c (dump_generic_node): Use LABEL_DECL_UID if set.

2003-11-15  Richard Henderson  <rth@redhat.com>

	* function.c (clear_block_marks): Rename from reorder_blocks_0, export.
	* function.h (clear_block_marks): Declare.
	* gimple-low.c (lower_function_body): Use it.
	(lower_bind_expr): Ensure we don't link blocks into the tree twice.
	* gimplify.c (gimplify_body): Keep old bind_expr at top level if
	possible.

2003-11-14  Richard Henderson  <rth@redhat.com>

	* tree-ssa-pre.c (split_critical_edges): Reimplement.  Call
	tree_split_edge directly.

2003-11-14  Jason Merrill  <jason@redhat.com>

	* tree-eh.c (do_return_redirection): Assign directly to the
	RESULT_DECL of a function which returns in memory.

2003-11-14  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (pre_stats): Add ephis_current member.
	(create_ephi_node): Use xmalloc, not ggc_alloc_tree.
	(clear_all_eref_arrays): Free the ephis here.
	(expr_phi_insertion): Don't append the ephis to the erefs array.
	(insert_occ_in_preorder_dt_order): Move building/freeing of dfn
	array so that it only occurs once per function..
	(rename_1): Ditto on the dfs_id array.
	(ephi_use_pool): New alloc pool.
	(add_ephi_use): Pool allocate these things, rather than
	ggc_alloc'ing them.
	(insert_euse_in_preorder_dt_order_1): Use ephi_at_block to put the
	ephi in the list.
	(pre_expression): Don't PRE when we only have 1 occurrence.
	(expr_lexically_eq): Make inline.
	(names_match_p): Move closer to first use.
	(tree_perform_ssapre): Alloc and free the ephi_use_pool.
	Make stat printing per-expression.
	Add checking that we freed all ephis.

2003-11-14  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt (ftree-ter): Document new option.
	* flags.h (flag_tree_ter): Add new flag.
	* fold-const.c (invert_truthvalue): Don't ignore cast to BOOLEAN_TYPE.
	* opts.c (decode_options): Option -ftree-ter defaults to on.
	(common_handle_option): Add processing for flag_tree_ter.
	* toplev.c (flag_tree_ter): Initialize to 0.
	(lang_independent_options f_): Add -ftree-ter flag.
	* tree-ssa-live.c (init_var_map): Initialize ref_count to 0.
	(delete_var_map): Free ref count if allocated.
	(register_ssa_partition): Add "is_use" parameter for reference counting.
	(create_ssa_var_map): Add flag and code for calculating ref counts.
	* tree-ssa-live.h (struct _var_map): Add ref_count field.
	(SSA_VAR_MAP_REF_COUNT): Define flag.
	(version_ref_count): Function to retreive ref_count.
	* tree-ssa.c (replace_variable): If an expression vector is passed in,
	use replacement expression instead of mapped variable when available.
	(struct value_expr_d): New structure for value lists.
	(struct temp_expr_table_d): Structure used to build an expression
	replacement table.
	(new_temp_expr_table): New. Create a new TER (Temporary Expression
	Replacement) table.
	(free_temp_expr_table): New. Free a TER table.
	(new_value_expr): New. Allocate a value list element.
	(free_value_expr): New. Free a value list element.
	(find_value_in_list): New. Find a value in a list.
	(add_value_to_list): New. Add a value to a list if not already present.
	(remove_value_from_list): New. Remove a value from a list.
	(add_dependance): New. Add a dependency to an expression.
	(check_replaceable): New. Check if a stmt is a candidate for TER. Add
	to active list and create dependancies if so.
	(finish_expr): New. Remove an expression from TER consideration.
	(mark_replaceable): New. Finish a TER expression as a valid replacement.
	(kill_expr): New. Finish dependent TER expressions as not replaceable.
	(kill_virtual_exprs): New. Finish any TER expressions dependent on a
	virtual operand as not replaceable.
	(find_replaceable_in_bb): New. Process a basic block for TER expression.
	(find_replaceable_exprs): New. Entry point for TER expression finder.
	(dump_replaceable_exprs): New. output list of replaceable expressions.
	(rewrite_out_of_ssa): Build TER table if requested, and use it.

2003-11-14  Andreas Jaeger  <aj@suse.de>

	* c-semantics.c (find_reachable_label): Use C90 function
	declaration.

2003-11-14  Jason Merrill  <jason@redhat.com>

	PR middle-end/12526
	* tree-cfg.c (call_expr_flags): Move to calls.c.
	* tree-flow.h: Move prototype to tree.h.

	PR c++/13033
	* c-simplify.c (gimplify_c_loop): Wrap the increment in a
	CLEANUP_POINT_EXPR.

	* tree-dfa.c (get_stmt_operands) <ASM_EXPR>: A memory clobber
	clobbers all call-clobbered variables.   Clobber clobber.

	* gimplify.c (canonicalize_component_ref): Remove redundant call
	to recalculate_side_effects.

2003-11-14  Richard Henderson  <rth@redhat.com>

	PR c++/12751
	* tree-eh.c (struct leh_tf_state): Add outer.
	(lower_try_finally, lower_cleanup): Set it.
	(lower_try_finally_fallthru_label): New.
	(honor_protect_cleanup_actions): Use it.
	(lower_try_finally_copy, lower_try_finally_switch): Likewise.

	* tree-eh.c (collect_finally_tree): Complete manual tailrecurse
	transformation.

2003-11-14  Richard Henderson  <rth@redhat.com>

	* gimplify.c (voidify_wrapper_expr): Don't clobber TREE_TYPE of
	statements in a STATEMENT_LIST.  Be prepared for an empty list.

2003-11-14  Steven Bosscher  <stevenb@suse.de>

	* jump.c (never_reached_warning): Remove function.
	* rtl.h (never_reached_warning): Don't declare it.
	* cfgrtl.c (never_reached_warning): Don't call it.
	* cse.c (never_reached_warning): Ditto.

2003-11-13  Jeff Law  <law@redhat.com>

	* tree-cfg.c (bsi_replace): Restore accidentally removed code.

	* tree-cfg.c (cfg_remove_useless_stmts_bb): Also detect useless
	var->var copies created by the out-of-ssa translation.

2003-11-13  Steven Bosscher  <stevenb@suse.de>

	PR middle-end/11514
	* tree-inline.c (walk_tree): Handle PLACEHOLDER_EXPR.

2003-11-13  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (cfg_remove_useless_stmts_bb): Initialize stmt.

2003-11-13  Jan Hubicka  <jh@suse.cz>

	* calls.c (special_function_p): Do not check for ECF_MALLOC.
	(flags_from_decl_or_type):  Use special_function_p.
	(expand_call): Remove call to special_function_p.
	* tree-cfg.c (notice_special_calls, clear_special_calls): New functions.
	(remove_useless_stmts): Use clear_special_calls.
	(remove_useless_stmts_1): Use notice_special_calls.
	* tree-flow.h (notice_special_calls, clear_special_calls): New functions.
	* tree-ssa-dce.c (remove_dead_stmts): Use clear_special_calls and
	notice_special_calls..

	* gimplify.c (gimplify_expr): Check labels.

	* tree-cfg.c (tree_verify_flow_info): Check labels.

	* tree-cfg.c (make_exit_edges): Do not create edges for const
	functions.
	(update_call_expr_flags): Fix.

2003-11-12  Diego Novillo  <dnovillo@redhat.com>

	(declare_inlined_vars): New local function.
	(initialize_inlined_parameters): Call it.
	(expand_call_inline): Call it.

2003-11-13  Steven Bosscher  <stevenb@suse.de>

	PR optimization/12640
	* tree-ssa-ccp.c (get_strlen): Don't follow the UD chain
	of a PHI argument if the DEF stmt for the argument is
	the PHI itself.

2003-11-12  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Jeff Law  <law@redhat.com>

	* tree-cfg.c (cfg_remove_useless_stmts): New function.
	(cfg_remove_useless_stmts_bb): Likewise.
	* tree-flow.h (cfg_remove_useless_stmts): Prototype.
	* tree-ssa.c (rewrite_out_of_ssa): Use cfg_remove_useless_stmts
	instead of remove_useless_stmts.

2003-11-12  Richard Henderson  <rth@redhat.com>

	* Makefile.in (OBJS-common): Add tree-iterator.o.
	(expr.o): Depend on tree-iterator.h.
	(GTFILES): Add tree-iterator.c.
	* basic-block.h (struct basic_block_def): Replace head_tree_p
	and end_tree_p with stmt_list.
	(tree_bb_root): New.
	(create_bb): Don't declare.
	* c-common.c (c_warn_unused_result): Handle STATEMENT_LIST.
	* c-simplify.c (c_gimplify_stmt): Don't rationalize_compound_expr.
	* cfg.c (entry_exit_blocks): Adjust for member changes.
	(compact_blocks): Manage tree_bb_root.
	* expr.c (expand_expr_1): Handle STATEMENT_LIST.
	* gimple-low.c: Update for tree_stmt_iterator changes.
	(lower_cond_expr): Use expr_only.  Notice empty conditionals.
	* gimplify.c (append_to_statement_list_1): Create and
	manage statement_list nodes.
	(foreach_stmt): Remove.
	(wfl_locus): Remove.
	(annotate_all_with_locus_1): Merge into...
	(annotate_all_with_locus): ... here.  Iterate over the
	statement list directly.
	(voidify_wrapper_expr): Handle STATEMENT_LIST.
	(gimplify_return_expr): Likewise.
	(gimplify_loop_expr): Likewise.
	(shortcut_cond_r, shortcut_cond_expr): Likewise.
	(gimplify_cleanup_point_expr): Likewise.
	(gimple_build_eh_filter): Create statement list bodies.
	(gimplify_bind_expr): Likewise.
	(gimplify_switch_expr): Likewise.
	(gimplify_cond_expr): Likewise.
	(gimplify_compound_expr): Handle void expressions as well.
	(gimplify_statement_list): New.
	(gimple_push_cleanup): Gimplify the WITH_CLEANUP_EXPR operand.
	(gimplify_stmt): Ensure non-null result.
	(gimplify_to_stmt_list): New.
	(gimplify_expr): Use gimplify_compound_expr, gimplify_statement_list,
	gimplify_to_stmt_list as appropriate.
	(gimplify_body): Fix creation of outer BIND_EXPR.
	* tree-cfg.c (tree_bb_root): New.
	(build_tree_cfg): Initialize it.  Update for make_blocks changes.
	(factor_computed_gotos): Use create_bb directly.
	(make_blocks): Rewrite to use statement lists.
	(append_stmt_to_bb, prepend_stmt_to_bb): Remove.
	(create_bb): Make static.  Add stmt_list argument.  Don't allow
	null after argument.  Set tree_bb_root.
	(make_edges): ENTRY block successor is FALLTHRU.
	(remove_useless_stmts_warn_notreached): Handle STATEMENT_LIST.
	(struct rus_data): Add last_goto.
	(remove_useless_stmts_cond): Clear it.  Zap empty conditionals.
	Use expr_only for simple statment elimination.
	(remove_useless_stmts_tf): Clear last_goto.  Use TREE_SIDE_EFFECTS
	instead of IS_EMPTY_STMT.  Use append_to_statement_list instead of
	munging to COMPOUND_EXPR.
	(remove_useless_stmts_tc): Clear last_goto.  Use TREE_SIDE_EFFECTS.
	(remove_useless_stmts_goto): Set last_goto.
	(remove_useless_stmts_label): New.  Kill goto-next-label.
	(remove_useless_stmts_1): Reorg to handle STATEMENT_LIST.
	(remove_bb): Simplify block removal.
	(remove_bsi_from_block): Kill.
	(tree_block_forwards_to): Tidy bsi loops.  Do not create
	block label here.
	(tree_cfg2dot): Update for bb->stmt_list.
	(delete_tree_cfg): Clear tree_bb_root.
	(set_bb_for_stmt): Handle STATEMENT_LISTs.
	(bsi_insert_before, bsi_insert_after): Re-implement on TSIs.
	(bsi_move_after, bsi_move_before, bsi_move_to_bb_end): Likewise.
	(bsi_replace): Likewise.
	(tree_find_edge_insert_loc): New, split from ...
	(bsi_insert_on_edge_immediate): ... here.
	(bsi_commit_edge_inserts): Use it.  Add all stmts at once.
	(bsi_insert_on_edge): Use statement lists.
	(tree_split_edge): Position new block correctly.  Deal with
	fallthrough to EXIT.
	(tree_verify_flow_info): Do not check block order vs statement chain.
	(tree_make_forwarder_block): Update create_bb call, fix edge flags.
	(thread_jumps): Call tree_redirect_edge_and_branch directly.
	(tree_block_label): Don't return a NONLOCAL_LABEL.
	(tree_redirect_edge_and_branch_1): Rename from s/_1//.  Take an
	argument to use ssa_redirect_edge or redirect_edge_succ.  Use
	tree_split_edge instead of bsi_insert_on_edge_immediate.
	(tree_redirect_edge_and_branch): New.
	(remove_stmt, first_exec_stmt, bsi_init, bsi_next_in_bb): Kill.
	(bsi_start, bsi_last, bsi_prev, bsi_from_tsi): Kill.
	(bsi_update_from_tsi, bsi_link_after): Kill.
	* tree-eh.c (collect_finally_tree): Handle STATEMENT_LIST.
	(replace_goto_queue_1): Likewise.
	(replace_goto_queue): Don't use walk_tree.
	(do_return_redirection): Create statement lists.
	(do_goto_redirection): Likewise.
	(block_may_fallthru_last): Fold into...
	(block_may_fallthru): ... here.
	(frob_into_branch_around): Use append_to_statement_list.
	(honor_protect_cleanup_actions): Likewise.
	(lower_try_finally_nofallthru): Likewise.
	(lower_try_finally_onedest): Likewise.
	(lower_try_finally_copy): Likewise.
	(lower_try_finally_switch): Likewise.
	(lower_try_finally): Likewise.
	(lower_catch): Likewise.
	(lower_eh_filter): Likewise.
	(lower_eh_constructs_1): Handle STATEMENT_LIST.
	* tree-flow-inline.h (BSI_NUM_ELEMENTS, bsi_list_p): Remove.
	(new_bsi_list, empty_bsi_stack, FOR_EACH_BSI_IN_REVERSE): Remove.
	(FOR_EACH_STMT_IN_REVERSE): Remove.
	(bsi_start, bsi_last, bsi_end_p): Re-implement based on TSIs.
	(bsi_next, bsi_prev, bsi_stmt, bsi_stmt_ptr, bsi_remove): Likewise.
	* tree-flow.h (block_stmt_iterator): Likewise.
	* tree-inline.c (copy_statement_list): New.
	(copy_body_r): Use it, and append_to_statement_list.
	(initialize_inlined_parameters): Use append_to_statement_list.
	(expand_call_inline): Likewise.
	(gimple_expand_calls_inline): New.
	(expand_calls_inline): Use it.
	(walk_tree, unsave_r): Handle STATEMENT_LIST.
	(add_stmt_to_compound): Remove.
	* tree-iterator.c: New file.
	* tree-iterator.h: Re-implement based on STATEMENT_LIST.
	* tree-mudflap.c (mf_decl_cache_locals): Don't
	rationalize_compound_expr.
	* tree-optimize.c (optimize_function_tree): Make static.
	Rechain statements from blocks before deleting the cfg.
	* tree-pretty-print.c (dump_generic_node): Handle STATEMENT_LIST,
	update for change in tree_stmt_iterator wrt COMPOUND_EXPR.
	(dump_generic_node): Dump lowered COND_EXPR on a single line.
	* tree-simple.c (is_gimple_stmt): Handle STATEMENT_LIST.
	* tree-simple.h (foreach_stmt_fn, foreach_stmt): Remove.
	(gimplify_to_stmt_list): Declare.
	(alloc_stmt_list, free_stmt_list): Declare.
	* tree-ssa-dce.c (should_remove_dead_stmt): Rename from
	remove_dead_stmt; return bool if statement should be removed.
	(remove_dead_stmts): Update to match.
	* tree-ssa-live.c (build_tree_conflict_graph): Don't use
	FOR_EACH_STMT_IN_REVERSE.
	* tree-ssa-pre.c (reaching_def): Tidy BSI usage.
	(insert_one_operand, collect_expressions): Likewise.
	* tree.c (tree_size): Handle STATEMENT_LIST.
	(copy_node): Abort on STATEMENT_LIST.
	(expr_first, expr_last): Move to tree-iterator.c.
	(expr_length): Remove.
	(tree_node_structure): Handle STATEMENT_LIST.
	(tsi_link_before, tsi_link_after, tsi_delink): Move to tree-iterator.c.
	(tsi_link_chain_before, tsi_link_chain_after): Merge into non-chain.
	(tsi_new_stmt_list, tsi_stmt_list_head, body_is_empty): Kill.
	* tree.def (STATEMENT_LIST): New.
	* tree.h (STATEMENT_LIST_HEAD, STATEMENT_LIST_TAIL): New.
	(struct tree_statement_list_node): New.
	(struct tree_statement_list): New.
	(enum tree_node_structure_enum): Add TS_STATEMENT_LIST.
	(union tree_node): Add stmt_list.
	(expr_length): Remove.
	(expr_only): New.
	(add_to_compound_expr, body_is_empty): Remove.
	(optimize_function_tree): Remove.

2003-11-12  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-flow.h (remove_useless_vars): Declare.
	(expand_var_p): Declaration removed.
	* tree-ssa.c (rewrite_out_of_ssa): Call remove_useless_vars.
	* tree-cfg.c (dump_function_to_file): Update dumping of variables.
	* gimple-low.c (expand_var_p): Made static.
	(remove_useless_vars): New.
	(expand_used_vars): Expand all variables in the
	cfun->unexpanded_var_list.

2003-11-11  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_gimplify_stmt): Fix botched removal of
	rationalize_compound_expr calls.

	* c-semantics.c (build_stmt): Set TREE_SIDE_EFFECTS.
	* c-simplify.c (c_gimplify_stmt): Return a gimplify_status;
	mind the status from subroutines to avoid re-gimplification.
	(c_build_bind_expr): Do not call gimplify_stmt.
	(gimplify_c_loop): Don't create a loop_expr; fully gimplify.
	(gimplify_block, gimplify_cleanup, gimplify_expr_stmt,
	gimplify_for_stmt, gimplify_while_stmt, gimplify_do_stmt,
	gimplify_if_stmt, gimplify_switch_stmt, gimplify_return_stmt,
	gimplify_decl_stmt, gimplify_compound_literal_expr,
	gimplify_stmt_expr): Return a gimplify_status.  In most cases,
	don't do local gimplification of sub-structures.
	(gimplify_decl_stmt): Use append_to_compound_expr when we care
	about the result value.
	(gimplify_stmt_expr): Use append_to_statement_list_force and
	re-gimplify so that voidify_wrapper_expr can work.
	(finish_bc_block): Don't append to a non-list.
	(c_gimplify_expr): Pass back the gimplify_status of subroutines.
	* c-common.h (c_gimplify_stmt): Update decl.
	* gimplify.c (append_to_statement_list_1): Make sure list_p is
	never null after call.
	(append_to_compound_expr): New.
	* tree-simple.h (append_to_compound_expr): Declare.

2003-11-11  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_addr_expr): Clear, not copy, TREE_SIDE_EFFECTS.

2003-11-11  Richard Henderson  <rth@redhat.com>

	PR c/13014
	* c-simplify.c (gimplify_if_stmt): Remove short circuit.
	* tree-cfg.c (struct rus_data): Add has_label.
	(remove_useless_stmts_warn_notreached): New.
	(remove_useless_stmts_cond): Warn for deleted conditionals.
	(remove_useless_stmts_tc): Warn for deleted catches.
	(remove_useless_stmts_1): Set has_label.

2003-11-11  Jan Hubicka  <jh@suse.cz>

	* gimplify.c (gimplify_call_expr):  Unset side effects for
	pure functions too.
	* tree-cfg.c (update-call_expr_flags): New function.
	(remove_useless_stmts_and_vars_1): Use it.
	(is_ctrl_altering_stmt):  Pure/const calls never alter the CFG.
	* tree-ssa-dce.c (stmt_useful_p): Check side effects flag
	on call exprs.

2003-11-11  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (has_label_p): New function.
	(tree_verify_flow_info): New checks.
	* tree-optimize.c (optimize_function_tree): Call verify_flow_info
	before de-SSA.

2003-11-11  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (struct rus_data): Rename from rusv_data.
	Remove remove_unused_vars.
	(remove_useless_stmts*): Rename from remove_useless_stmts_and_vars*.
	(remove_useless_stmts_bind): Do not remove dead variables.
	(remove_useless_stmts): Kill remove_unused_vars argument.
	* tree-flow.h (remove_useless_stmts): Update.
	* tree-optimize.c (tree_rest_of_compilation): Update call.
	* tree-ssa.c (rewrite_out_of_ssa): Likewise.

2003-11-11  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (brief_dump_cfg): Declare.
	* cfg.c (dump_cfg_bb_info, brief_dump_cfg): New.
	* diagnostic.h (dump_generic_node): Declaration changed.
	(print_generic_stmt_indented): Declare.
	* gimple-low.c (expand_var_p): New.
	(expand_used_vars): Use it.
	* tree-cfg.c (struct cfg_stats_d): Remove num_failed_bind_expr_merges
	field.
	(remove_bb): Only dump whole block with TDF_DETAILS.
	(tree_dump_bb): Use dump_generic_bb.
	(dump_tree_cfg): Use brief_dump_cfg and dump_function_to_file.
	(dump_cfg_function_to_file): Merged into dump_function_to_file,
	removed.
	(dump_cfg_stats): Do not dump cfg_stats.num_failed_bind_expr_merges.
	(dump_function_to_file): Moved from tree-dump.c, merged with
	dump_cfg_function_to_file.
	* tree-dump.c (dump_function_to_file): Removed.
	* tree-flow.h (dump_cfg_function_to_file): Declaration removed.
	(dump_generic_bb, expand_var_p): Declare.
	* tree-must-alias.c (tree_compute_must_alias): Replace
	dump_cfg_function_to_file by dump_function_to_file.
	* tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
	* tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
	* tree-ssa-dce.c (tree_ssa_dce): Ditto.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
	* tree-ssa-pre.c (tree_perform_ssapre): Ditto.
	* tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
	* tree-tailcall.c (tree_optimize_tail_calls): Ditto.
	* tree-pretty-print.c (print_declaration, print_generic_decl): Don't
	use flags argument, change spacing.
	(dump_block_info): Removed.
	(dump_generic_bb_buff, dump_generic_bb, print_generic_stmt_indented,
	dump_bb_header, dump_bb_end, dump_phi_nodes): New functions.
	(dump_vops): Change spacing, don't dump phi nodes.
	(do_niy, print_generic_stmt, print_generic_expr, print_declaration,
	print_struct_decl, print_call_name): Add argument to
	the dump_generic_node calls.
	(last_bb): Removed.
	(dump_generic_node): Print semicolons at end of statements correctly.
	Don't print bb related stuff.
	(maybe_init_pretty_print): Don't initialize last_bb.
	* tree-ssa.c (rewrite_out_of_ssa): Do not allow virtual operands to
	be shown in the .optimized dump.

2003-11-11  Daniel Berlin  <dberlin@dberlin.org>

	PR optimization/12936
	* tree-ssa-pre.c (expr_phi_insertion): Remove unused code that was
	causing ICE's for VA_ARG_EXPR.

2003-11-10  Richard Henderson  <rth@redhat.com>

	* gimple-low.c (lower_function_body): Lower bind_expr in place.
	(lower_stmt): Only incr for stmts we're skipping.
	(lower_cond_expr): Detect empty if.

2003-11-10  Steven Bosscher  <stevenb@suse.de>

	* toplev.c (rest_of_decl_compilation): Use the location of the
	declaration for error messages.

2003-11-10  Richard Henderson  <rth@redhat.com>

	* gimplify.c (add_stmt_to_compound, add_tree): Remove.
	(append_to_statement_list_1, append_to_statement_list): New.
	(append_to_statement_list_force): New.
	(gimplify_loop_expr): Take pre_p.
	(gimplify_expr): Provide it.
	* tree-simple.h: Update.

	* c-simplify.c: Replace add_tree with append_to_statement_list.
	* gimplify.c, tree-mudflap.c: Likewise.

2003-11-10  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_warn_unused_result): Restructure to use iterator
	on COMPOUND_EXPR only.

2003-11-09  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_verify_flow_info): Fix checking of order of basic
	blocks over code.

2003-11-09  Richard Henderson  <rth@redhat.com>

	* basic-block.h (struct edge_def): Turn insns into a union.
	* cfgrtl.c (insert_insn_on_edge): Update to match.
	(commit_one_edge_insertion, commit_edge_insertions): Likewise.
	(commit_edge_insertions_watch_calls): Likewise.
	* gcse.c (reg_killed_on_edge, bypass_block): Likewise.
	* profile.c (instrument_edges): Likewise.
	* rtlanal.c (hoist_insn_to_edge): Likewise.
	* tree-cfg.c (PENDING_STMT): Likewise.
	(SET_PENDING_STMT): Remove.
	(bsi_commit_edge_inserts): Update to match.

2003-11-08  Jan Hubicka  <jh@suse.cz>

	* fold.c (nondestructive_fold_binary_to_constant): Fix typo.
	* fold-const.c (fold_relational_const): Check for side effects.

2003-11-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* basic-block.h (create_bb): Declaration changed.
	* tree-cfg.c (create_bb): Enable creating a block on specified place.
	(make_blocks, tree_split_edge, tree_make_forwarder_block): Use it.
	(tree_verify_flow_info): Check bbs are in the correct order.

	* tree-cfg.c (find_unreachable_blocks): Remove now incorrect comments.

	* tree-ssa.c (rewrite_out_of_ssa): Don't remove annotations from
	statements before the final dump.

2003-11-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c (struct tailcall): New.
	(bb_optimize_tail_calls, find_tail_call_p): Removed.
	(eliminate_tail_call): Get the tailcall from the struct tailcall.
	(optimize_tail_call, find_tail_calls): New.
	(tree_optimize_tail_calls): Use them.

2003-11-07  Jan Hubicka  <jh@suse.cz>

	* gimple-low.c (simple_goto_p): Move to...
	* tree-cfg.c: (simple_goto_p): ... here;
	(nonlocal_goto_p): New.
	(is_computed_goto): Rename to ...
	(computed_goto_p): ... this; make global.
	(factor_computed_gotos, make_blocks):  Update calls.
	(make_ctrl_stmt_edges): Add edge for nonlocal labels; use new functions.
	* tree-flow.h (is_coputed_goto): Kill.
	(nonlocal_goto_p, simple_goto_p, computed_goto_p): Declare.
	* tree-ssa-ccp (visit_stmt): Update.

2003-11-07  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (tree_expr_nonzero_p): Fix typo.

	* fold-const.c (tree_expr_nonzero_p): New function.
	(fold_relational_const): Use it.
	(nondestructive_fold_binary_to_constant): Allow casts in address
	expressions.

2003-11-06  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (tree_block_label):  Cleanup.

2003-11-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (fast_a_dominates_b): New function.
	(build_dfs_id_array_1): Ditto.
	(build_dfs_id_array): Ditto.
	(load_modified_phi_result): Use fast_a_dominates_b.
	(rename_1): Ditto.
	Also use build_dfs_id_array, and remove some duplicate ephi_at_block
	calls.
	(insert_occ_in_preorder_dt_order): Remove some duplicate ephi_at_block
	calls.
	(pre_expression): Ditto.
	Also free dfs_id arrays here.
	(collect_expressions): Remove duplicate bsi_stmt calls.

2003-11-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (count_stmts_in_bb): Removed.
	(set_var_phis): Only call bb_for_stmt once.
	(insert_one_operand): Remove endtree, endtreep, a lot of special handling
	no longer needed.  Remove insert_done.
	(collect_expressions): Enable INDIRECT_REF and SSA_NAME handling.

2003-11-06  Steven Bosscher  <stevenb@suse.de>

	* tree-cfg.c (STRIP_CONTAINERS): Remove.

2003-11-06  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (cleanup_cond_expr_graph):  Clean edge flags.

2003-11-06  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dump.c (dump_options): Remove TDF_LINENO from all setting.

2003-11-06  Jan Hubicka  <jh@suse.cz>

	* builtins.c (expand_builtin_strstr, expand_builtin_strchr,
	expand_builtin_strrchr, expand_builtin_strpbrk,
	simplify_builtin_strstr, simplify_builtin_strrchr,
	simplify_builtin_strpbrk): Add missing casts.

2003-11-05  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* diagnostic.h (print_generic_decl): Declare.
	* tree-cfg.c (dump_cfg_function_to_file): Dump variables in
	unexpanded_var_list.
	* tree-pretty-print.c (print_generic_decl): New function.

2003-11-05  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (gimplify.o): Add function.h dependency.
	* c-call-graph.c (construct_call_graph): Modify build_tree_cfg call.
	* gimple-low.c (record_vars): Export.
	(lower_function_body): Remove the topmost BIND_EXPR.
	* gimplify.c: Include function.h.
	(gimple_add_tmp_var): Record temporaries in the
	cfun->unexpanded_vars_list if available.
	* tree-cfg.c (build_tree_cfg): Work without the topmost BIND_EXPR.
	(dump_cfg_function_to_file): New.
	(dump_tree_cfg): Use dump_cfg_function_to_file.
	* tree-dump.c (dump_function_to_file): Work without the topmost
	BIND_EXPR.
	* tree-flow.h (build_tree_cfg): Declaration changed.
	(dump_cfg_function_to_file, record_vars): Declare.
	* tree-optimize.c (optimize_function_tree, tree_rest_of_compilation):
	Work without the topmost BIND_EXPR.
	* tree-must-alias.c (tree_compute_must_alias): Use
	dump_cfg_function_to_file.
	* tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
	* tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
	* tree-ssa-dce.c (tree_ssa_dce): Ditto.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
	* tree-ssa-pre.c (tree_perform_ssapre): Ditto.
	* tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
	* tree-tailcall.c (tree_optimize_tail_calls): Ditto.
	* tree.h (optimize_function_tree): Declaration changed.

2003-11-03  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (handle_bb_creation): Removed.
	(redo_dominators): Removed.
	(insert_one_operand): Remove code to handle bb creation, since all
	critical edges are now pre-split.
	(finalize_2): Remove redo_dominators related code.
	(pre_expression): Return 1 if we exited early because nothing happened.
	(split_critical_edges): Do fake variable assignments instead, because
	it works. return true if we actually split an edge.
	(tree_perform_ssapre): Remove redo_dominators code.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* function.h (struct function): New field unexpanded_var_list.
	* gimple-low.c (unexpanded_var_list): Removed.
	(record_vars, expand_used_vars): Use cfun->unexpanded_var_list.
	* tree-flow.h (unexpanded_var_list): Declaration removed.

	* gimplify.c (should_carry_locus_p): New.
	(annotate_all_with_locus_1): Use it.  Do not annotate empty
	statements.

2003-11-03  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (tree_try_redirect_by_replacing_jump): Do not use
	succesor_block.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-pretty-print.c (dump_block_info): Add flags parameter.
	Only show line number when asked to.
	(dump_generic_node): Pass flags to dump_block_info.

2003-11-03  Jan Hubicka  <jh@suse.cz>

	* cfghooks.h (redirect_edge_and_branch hook): Make it return edge.
	* cfgrtl.c (cfg_layout_redirect_edge_and_branch,
	rtl_redirect_edge_and_branch, try_redirect_by_replacing_jump):
	Update to new interface.
	* tree-cfg.c (tree_cfg_hooks): Move to end of file; set
	redirect_edge_and_branch and redirect_edge_and_branch_force.
	(thread_jumps): Use redirect_edge_and_branch.
	(tree_block_label): new; break out of thread_edge.
	(tree_try_redirect_by_replacing_jump): New.
	(thread_edge): Rename to tree_redirect_edge_and_branch; deal sanely
	with unusual edges; preserve profile.
	(tree_redirect_edge_and_branch_force): New.
	* tree-flow.h (ssa_redirect_edge): Declare.
	* tree-ssa.dom.c (tree_ssa_dominator_optimize): Use redirect_edge_and_branch.
	* tree-ssa.c (ssa_redirect_edge): New.

2003-11-03  Jeff Law  <law@redhat.com>

	* domwalk.h (struct dom_walk_data): New field "global_data".
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Initialize new
	"global_data" field.
	* tree-flow.h (enum need_phi_state): New enumeration.
	(var_ann_d): Add bitfield for need_phi_state.
	* tree-ssa.c (mark_def_sites_global_data): New structure to hold
	global data for mark_def_sites dominator walk.
	(mark_def_sites): Revamp to be called via the dominator walker.
	(set_def_block): Update need_phi_state for the variable as needed.
	(set_livein_block): Similarly.
	(rewrite_into_ssa): Use dominator walker to call mark_def_sites.
	Delay freeing dominance info.  Kill "globals" bitmap.
	(insert_phi_nodes): No longer need "globals" bitmap.  Use
	need_phi_state in variable's annotation to determine if a PHI
	may be needed.

	* tree-ssa-dom.c (dom_opt_finalize_block): Try to thread across the
	edges leaving COND_EXPR nodes which are leafs in the dominator
	tree.
	(record_equivalences_from_incoming_edge): Do not set EQ_EXPR_VALUE
	unless the block's single predecessor contains parent_block_last_stmt.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dump.c (dump_options): Add TDF_LINENO.
	* tree-pretty-print.c (dump_generic_node): Print line number for
	statements if asked to.
	* tree.h (TDF_LINENO): New.
	* doc/invoke.texi (lineno): Document.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* expr.c (expand_vars, expand_var): Split of ...
	(expand_expr_1): ... here.
	* expr.h (expand_var): Declare.
	* gimple-low.c (lower_function_body, lower_stmt, lower_bind_expr):
	Eliminate BIND_EXPRs.
	(expand_used_vars): New.
	* tree-alias-common.c (create_alias_vars): Walk variables in blocks.
	* tree-cfg.c (make_bind_expr_blocks): Removed.
	(make_blocks, build_tree_cfg, factor_computed_gotos): Don't handle
	BIND_EXPRs.
	(assign_vars_to_scope, successor_block, NEXT_BLOCK_LINK): Removed.
	(make_edges, make_exit_edges): Don't use successor_block.
	(remove_useless_stmts_and_vars_goto): Don't expect NEXT_BLOCK_LINK
	to be set.
	(bsi_init, bsi_next_in_bb, bsi_from_tsi): Don't handle BIND_EXPRs.
	(replace_stmt): Don't create BIND_EXPRs.
	* tree-flow.h (struct var_ann_d): Removed field scope.
	(struct stmt_ann_d): Removed fields scope and scope_level.
	(propagate_copy): Declaration changed.
	(fixup_var_scope): Removed.
	* tree-must-alias.c (tree_compute_must_alias): Consider DECL_NONLOCAL
	vars call clobbered.
	* tree-optimize.c (tree_rest_of_compilation): Call expand_used_vars.
	* tree-ssa-copyprop.c (move_var_to_scope, fixup_var_scope): Removed.
	(copyprop_stmt): Call to propagate_copy changed.
	(propagate_copy): Don't update scope.
	* tree-ssa-dom.c (cprop_into_stmt): Call to propagate_copy changed.
	(eliminate_redundant_computations): Don't call fixup_var_scope.
	* tree-ssa.c (insert_copy_on_edge): Don't update scope.

2003-11-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-inline.c (walk_tree): Tail recursion optimized for
	COMPOUND_EXPRs.
	* tree-eh.c (collect_finally_tree): Ditto.

2003-11-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-optimize.c (optimize_function_tree): Removed duplicate call of
	lower_function_body.  Moved call of reset_block_changes ...
	(tree_rest_of_compilation) ... here.  Reset the scope to top before
	expanding function end.

2003-11-01  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* basic-block.h (BB_CONTROL_STRUCTURE): Removed.
	* tree-cfg.c (struct cfg_stats_d): Field num_merged_cases removed.
	(make_blocks, make_bind_expr_blocks, append_stmt_to_bb, bsi_link_after,
	build_tree_cfg, factor_computed_gotos, prepend_stmt_to_bb,
	remove_stmt, replace_stmt): Don't set parent.
	(set_parent_stmt, add_stmt_to_bb, find_contained_blocks,
	blocks_unreachable_p, remove_blocks, remove_unreachable_block,
	move_outgoing_edges, merge_tree_blocks, remap_stmts): Removed.
	(REMOVE_ALL_STMTS, REMOVE_NO_STMTS, REMOVE_NON_CONTROL_STRUCTS,
	REMOVE_CONTROL_STRUCTS): Removed.
	(remove_bb): Code to handle control structures removed.
	(tree_block_forwards_to): Don't stop due to CASE_LABEL_EXPRs.
	(tree_dump_bb): Don't print parent.  Print only BIND_EXPRs in slim
	form.
	(dump_tree_cfg): Don't count merged case labels.
	(is_ctrl_structure): Removed.
	(stmt_starts_bb_p): Don't handle CASE_LABEL_EXPRs.
	(tree_verify_flow_info): Don't check BB_CONTROL_STRUCTURE.
	* tree-flow-inline.h (parent_block, parent_stmt): Removed.
	* tree-flow.h (struct stmt_ann_d): Remove parent_stmt field.
	(parent_stmt, parent_block, is_ctrl_structure): Declarations removed.
	* tree-pretty-print.c (dump_generic_node): Don't handle lowered
	COND_EXPRs specially.
	* tree-ssa-ccp.c (visit_stmt): Don't check is_ctrl_structure.

2003-10-31  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (record_equivalences_from_stmt): Restore lost code
	to create equivalences from BIT_IOR_EXPR.

	* tree-ssa-dom.c (thread_jumps_walk_stmts): Go ahead and optimize
	a COND_EXPR with a compile-time constant condition.

2003-10-31  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Fix comment
	describing SSA pass after DOM2.

2003-10-31  Diego Novillo  <dnovillo@redhat.com>

	Fix PR optimization/12825
	* tree-optimize.c (optimize_function_tree): Run SSA renamer after
	second DOM pass.

2003-10-30  Richard Henderson  <rth@redhat.com>

	* c-common.c (match_case_to_enum_1, match_case_to_enum): New.
	(c_do_switch_warnings): New.
	* c-common.h (c_do_switch_warnings): Declare.
	* c-typeck.c (c_finish_case): Call it.
	* stmt.c (all_cases_count, BITARRAY_TEST, BITARRAY_SET,
	mark_seen_cases, check_for_full_enumeration_handling): Remove.
	(expand_end_case_type): Don't do warn_switch handling.
	* expr.h, tree.h: Remove dead decls.

	* c-simplify.c (gimplify_switch_stmt): Force switch body non-null.

2003-10-30  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (thread_jumps): Allow SWITCH_EXPR.
	(thread_edge): Handle it.  Tidy surrounding code.

2003-10-30  Richard Henderson  <rth@redhat.com>

	* domwalk.c (walk_dominator_tree): Pass any final is_ctrl_stmt
	down the recursive walk.

2003-10-30  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (thread_across_edge): Renamed from
	thread_through_successor.  Revamp to thread the destination of an edge
	rather than the successors of a block.
	(dom_opt_finalize_block): Corresponding changes.  Do not bother calling
	thread_across_edge unless we are at a leaf in the dominator tree.

	* tree-cfg.c (thread_jumps): Now returns a bool.  Move some tests into
	tree_forwarder_block_p.  Improve comments.
	(cleanup_control_flow): Now returns a bool indicating if anything was
	changed.
	(thread_unconditional_jumps): Kill.
	(cleanup_tree_cfg): Repeat cascading cleanups until nothing changes.
	(tree_forwarder_block_p): Check forwardable bit in the block's
	annotation to avoid useless work.  Mark blocks as not forwardable as
	appropriate.  Verify destination is not the exit block here.  Do not
	consider successors of the entry block as forwarders.  Ignore empty
	statements when walking through the block's statements.  Verify target
	block is not the start of a case label and that we can safely insert
	a label at the target block.

2003-10-29  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_warn_unused_result): Remove lowered containers.
	* c-semantics.c (genrtl_case_label): Update add_case_node call.
	* c-simplify.c (gimplify_switch_stmt): Build SWITCH_EXPR and
	gimplify it simultaneously with the body.
	* expr.c (expand_expr_1): Handle SWITCH_BODY clear and
	SWITCH_LABELS set.  Update add_case_node calls.
	* gimple-low.c (lower_stmt): Don't do anything for SWITCH_EXPR.
	(lower_switch_expr, lower_case_label_expr): Remove.
	* gimplify.c (gimplify_switch_expr): Zap SWITCH_BODY after
	gimplification.  Force default entry for SWITCH_LABELS.
	(gimplify_case_label_expr): Rename from gimple_add_case_label.
	Assert switch in scope; lower to LABEL_EXPR.
	* stmt.c (pushcase, pushcase_range) Update add_case_node calls.
	(add_case_node): Add dont_expand_label argument.
	(same_case_target_p): Don't search rtl.
	* tree-cfg.c (enum find_location_action): Remove.
	(make_switch_expr_blocks): Remove.
	(make_blocks): Update.
	(make_case_label_edges): Remove.
	(make_edges): Update.
	(find_contained_blocks): Remove lowered containers.
	(make_switch_expr_edges): New.
	(make_ctrl_stmt_edges): Call it.
	(make_cond_expr_edges): Use label_to_block.
	(remove_useless_stmts_and_vars_1): Don't go into SWITCH_BODY.
	(remove_unreachable_block): Remove SWITCH_EXPR special case.
	(cleanup_cond_expr_graph): Tidy.
	(cleanup_switch_expr_graph): Rewrite.
	(disconnect_unreachable_case_labels): Remove.
	(find_taken_edge_cond_expr): Use integer_zerop/integer_nonzerop.
	(find_taken_edge_switch_expr): Rewrite.
	(value_matches_some_label): Remove.
	(find_case_label_for_value): New.
	(is_ctrl_structure): Remove lowered containers.
	(is_ctrl_stmt): Add SWITCH_EXPR.
	(switch_parent): Remove.
	(handle_switch_fallthru): Remove.
	(handle_switch_split): Remove.
	(find_insert_location): Merge into ...
	(bsi_insert_on_edge_immediate): ... here.  Simplify.
	(tree_split_edge): Don't set EDGE_FALLTHRU.
	* tree-eh.c (collect_finally_tree): Remove lowered containers.
	(replace_goto_queue_1, block_may_fallthru_last): Likewise.
	(lower_eh_constructs_1): Likewise.
	(verify_norecord_switch_expr): New.
	(lower_try_finally_switch): Generate lowered switches.
	* tree-inline.c (expand_calls_inline): Don't search null SWITCH_BODY.
	* tree-pretty-print.c (dump_generic_node): Do something sensible
	with lowered switch_expr.
	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Update
	for lowered switch_expr.
	* tree.def (SWITCH_EXPR): Update docs.
	* tree.h (add_case_node): Update decl.

2003-10-29  Daniel Berlin <dberlin@dberlin.org>

	* tree-ssa-pre.c (n_phi_preds): New variable.
	(generate_vops_as_of_bb): New function
	(generate_expr_as_of_bb): Remove unused first argument. Update all
	callers.
	(subst_phis): Add boundary check for the phi_pred_cache array.
	(same_e_version_phi_result): Once modified, no point in continuing
	the loop.
	(finalize_2): ESSA Minimization can crash if we ended up with new
	BB's

2003-10-29  Richard Henderson  <rth@redhat.com>

	* tree-eh.c (do_return_redirection): Don't move copy to RESULT_DECL
	outside the RETURN_EXPR.  Introduce a new temporary as needed.

2003-10-26  Richard Henderson  <rth@redhat.com>

	* gimplify.c (keep_function_tree_in_gimple_form): Remove.
	(gimplify_function_tree): Return void.  Remove hack for
	language not supporting gimple.
	* tree.h: Update decls.
	* langhooks-def.h (LANG_HOOKS_GIMPLE_BEFORE_INLINING): New.
	* langhooks.h (struct lang_hooks): Add gimple_before_inlining.
	* tree-inline.c (copy_body_r): Check that instead of
	keep_function_tree_in_gimple_form.
	(initialize_inlined_parameters): Likewise.
	(expand_call_inline, expand_calls_inline): Likewise.

	* explow.c (probe_stack_range): Never emit loop notes.
	* expr.c (emit_block_move_via_loop): Likewise.
	* toplev.c (rest_of_compilation): Always synthesize loop notes.

2003-10-26  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (gimple-low.o): Add function.h dependency.
	* gimple-low.c (struct lower_data): New field block.
	(lower_function_body, lower_stmt, lower_bind_expr): Record
	the block at statements.
	* cfglayout.c (insn_locators_initialize): Use new info about
	blocks.
	* expr.c (expand_expr): Record block changes.
	* function.c (blocks_nreverse): Export.
	(uninitialized_vars_warning): Use DECL_RTL_SET_P to test for presence
	of rtl.
	(reset_block_changes, record_block_change, finalize_block_changes,
	check_block_change, free_block_changes): New functions.
	* function.h (struct function): New bitfield dont_emit_block_notes.
	New field ib_boundaries_block.
	(blocks_nreverse, reset_block_changes, record_block_change,
	finalize_block_changes, check_block_change, free_block_changes):
	Declare.
	* sibcall.c (optimize_sibling_and_tail_recursive_call): Don't call
	reorder_blocks when dont_emit_block_notes.
	* stmt.c (expand_start_bindings_and_block, expand_end_bindings):
	Don't emit block notes when dont_emit_block_notes.
	* toplev.c (rest_of_compilation): Don't call reorder_blocks when
	dont_emit_block_notes.
	* tree.c (build1): Initialize TREE_BLOCK field.
	* tree-flow.h (lower_function_body): Declare.
	* tree-optimize.c: Include function.h.
	(optimize_function_tree): Call lower_function_body.
	* tree.h (struct tree_exp): Add block field.
	(TREE_BLOCK): New macro.

2003-10-26  Richard Henderson  <rth@redhat.com>

	* tree.h (tree_dump_index): Add TDI_lower.
	* tree-dump.c (dump_files): Add .lower entry.
	* tree-optimize.c (optimize_function_tree): Move lower_function_body,
	(tree_rest_of_compilation): here.  Tidy .useless dump.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* c-common.c (c_estimate_num_insns_1): Kill.
	(c_estimate_num_insns): Kill.
	* c-common.h (c_estimate_num_insns): Kill.
	* c-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* cp-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* objc-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* java/lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	(java_estimate_num_insns_1, java_estimate_num_insns): Kill.
	* cgraphunit (cgraph_analyze_function): Use estimate_num_insns.
	* tree-eh.c (decide_copy_try_finally): Likewise.
	* tree-inline.c (limits_allow_inilining, optimize_inline_calls): Likewise.
	(estimate_num_insns_1, estimate_num_insns): New functions.
	* langhooks-def.h (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* langhooks.h (estimate_num_inssn): Kill.
	* tree-inline.h (estimate_num_insns): Declare.

2003-10-25  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* gimple-low.c: New.
	* Makefile.in (gimple-low.o): Add.
	* domwalk.c (walk_dominator_tree): Consider COND_EXPR a control
	structure.
	* tree-cfg.c (make_cond_expr_blocks, linearize_control_structures,
	linearize_cond_expr): Removed.
	(thread_jumps, tree_forwarder_block_p): New.
	(merge_tree_blocks): Unused now.
	(phi_alternatives_equal): Modified for use in jump threading.
	(enum find_location_action): Remove EDGE_INSERT_LOCATION_NEW_ELSE.
	(make_blocks): Don't call make_cond_expr_blocks.
	(set_parent_stmt): Ensure we don't set COND_EXPR as a parent
	statement.
	(find_contained_blocks): Remove COND_EXPR alternative.
	(make_cond_expr_edges): Handle lowered gotos.
	(cleanup_tree_cfg): Don't call linearize_control_structures,
	call thread_jumps and verify_flow_info and rerun cleanup_control_flow.
	(remove_unreachable_block): Remove handling of structured COND_EXPRs.
	(remove_bb): Fix warning for removed goto exprs.
	(cleanup_control_flow, cleanup_cond_expr_graph,
	cleanup_switch_expr_graph, find_taken_edge_cond_expr,
	bsi_insert_before, find_insert_location, bsi_insert_on_edge_immediate):
	Handle lowered COND_EXPRs.
	(is_ctrl_structure): Remove COND_EXPR.
	(is_ctrl_stmt): Add COND_EXPR.
	(tree_verify_flow_info): Check validity of COND_EXPRs.
	(thread_edge): Moved from tree-ssa-dom.c.
	* tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
	Declaration changed.
	(thread_edge, lower_function_body): Declare.
	* tree-optimize.c (optimize_function_tree): Call lower_function_body.
	* tree-pretty-print.c (dump_generic_node): Dump lowered cond_exprs in
	full.
	* tree-ssa-copyprop.c (fixup_var_scope): Handle non-SSA_NAMEs.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Cleaned up when
	COND_EXPRs are lowered.
	* tree-ssa-dom.c (thread_edge): Moved to tree-cfg.c.
	(tree_ssa_dominator_optimize_1): Dumps and setting of vars_to_rename
	moved from thread_edge.
	(optimize_stmt): Pass block iterator to cleanup_cond_expr_graph and
	cleanup_switch_expr_graph.
	* tree-ssa.c (insert_copy_on_edge): Fixup scope for emitted variables.

	* dominance.c (BB_NODE): Use VARRAY_GENERIC_PTR_NOGC.
	(calculate_dominance_info): Use VARRAY_GENERIC_PTR_NOGC_INIT.
	* varray.c (element): Add GENERIC_PTR_NOGC entry.
	* varray.h (enum varray_data_enum): Add VARRAY_DATA_GENERIC_NOGC.
	(union varray_data_tag): Add generic_nogc.
	(VARRAY_GENERIC_PTR_NOGC_INIT,  VARRAY_GENERIC_PTR_NOGC,
	VARRAY_PUSH_GENERIC_PTR_NOGC, VARRAY_TOP_GENERIC_PTR_NOGC): New.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* cppcharset.c (one_utf8_to_utf32): Initialize 's' to silence warning.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (nondestructive_fold_binary_to_constant): Realize that
	(plus (address) (const_int)) is a constant.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* opts.c (decode_options): Uncomment unit-at-a-time setting
	* params.def: Syncrhonize with manline.
	* tree-inline.c (initialize_inlined_parameters):  Set variable as
	gimplified.

2003-10-24  Steven Bosscher  <steven@gcc.gnu.org>

	* gimplify.c (create_artificial_label): New function.
	(build_and_jump): Use it.
	* c-simplify.c (c_gimplify_stmt): Likewise.
	(gimplify_condition): Likewise.
	* tree-cfg.c (factor_computed_gotos, tree_block_forwards_to,
	handle_switch_fallthru, handle_switch_split): Likewise.
	* tree-ssa-dom.c (thread_edge): Likewise.
	* tree-ssa-pre.c (split_critical_edges): Likewise.
	* tree-tailcall.c (eliminate_tail_call): Likewise.
	* tree-eh.c (frob_into_branch_around,
	honor_protect_cleanup_actions, lower_try_finally_nofallthru,
	lower_try_finally_onedest, lower_try_finally_copy,
	lower_try_finally_switch, lower_catch, lower_eh_filter,
	lower_cleanup): Likewise.
	(make_label): Remove.
	* tree-simple.h (create_artificial_label): Add prototype.
	* tree-inline.c (expand_call_inline): Make return label for
	inlined function artificial.

2003-10-23  Jeff Law  <law@redhat.com>

	* timevar.def (TV_TREE_SSA_THREAD_JUMPS): New timevar.
	* tree-dump.c (dump_files): Add dump file for jump threading.
	* tree.h (TDI_thread_jumps): New enum member.
	* tree-cfg.c (tree_block_forwards_to): No longer static.
	* tree-flow.h (tree_block_forwards_to): Prototype.
	(tree_ssa_dominator_thread_jumps): Likewise.
	* tree-optimize.c (optimize_function_tree): Call jump threader.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): New function.
	Common code for redundancy elimination and jump threading on
	the dominator tree.  Slightly different callback initialization
	for redundancy elimination and jump threading.  Initialize
	block forwardable attribute.
	(tree_ssa_dominator_optimize): Call tree_ssa_dominator_optimize_1.
	(tree_ssa_dominator_thread_jumps): New function.
	(thread_edge): Mark results of PHI nodes as needing rewriting if
	we have threaded through a block with PHI nodes.
	(thread_through_successor): If thread_through_phis is nonzero,
	then allow jump threading through blocks with PHI nodes.  If the
	target block is a forwarder block, then forward the jump.
	(thread_jumps_walk_stmts): Statement walker for dominator thread
	jumping.

	* tree-ssa-dom.c (record_equivalence_from_incoming_edge): Fix
	comment typo.

2003-10-23  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_*): Return gimplify_status.
	(gimple_add_tmp_var): Set seen_in_bind_expr.
	(gimplify_bind_expr): Likewise.  Kill if 0 code.
	(gimplify_return_expr): Cope with error marks.
	(gimple_push_cleanup): Do nothing if errors seen.
	(gimplify_expr): Cope with error marks.  Use gimplify_status to
	decide when to exit the main loop.  Zap statements with errors.
	(gimplify_body): Return void.
	(keep_function_tree_in_gimple_form): Don't exit on errors.
	(gimplify_function_tree): Return bool.  Don't exit on errors.
	* langhooks.c (lhd_gimplify_expr): Return GS_UNHANDLED.
	* langhooks.h (struct lang_hooks): Update docs for gimplify_expr.
	* tree-optimize.c (optimize_function_tree): Don't exit on errors.
	Move delete_tree_cfg call outside optimization clause.
	(tree_rest_of_compilation): Don't exit on errors.
	* tree-simple.h (enum gimplify_status): New.
	(gimplify_expr, gimplify_stmt, gimplify_body): Update.
	* tree-ssa.c (rewrite_out_of_ssa): Move delete_tree_cfg call to
	optimize_function_tree.
	* tree.h (struct tree_decl): Add seen_in_bind_expr.
	(gimplify_function_tree): Update.
	* c-common.c (c_add_case_label): Unify three error exit paths.
	Create a normal label, not a case label to suppress unreachable
	code warning.
	* c-simplify.c (c_build_bind_expr): Don't create an empty bind
	body.  Pass entire bind_expr to gimplify_stmt.
	(gimplify_block): Don't abort on mismatches if errors seen.
	(gimplify_expr_stmt): Cope with error marks.
	(gimplify_decl_stmt): Likewise.
	(c_gimplify_expr): Return gimplify_status.

2003-10-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-pretty-print.c (dump_generic_node): Kill off ELEFT_NODE.
	Print out status of new EUSE_LVAL flag.

	* tree-ssa-pre.c: #include alloc-pool.h
	(append_eref_to_block): Inline.
	(names_match_p): Ditto.
	(pre_expression): Take sbitmap of variables to rename so we can
	mark our new variable if necessary.
	(insert_occ_in_preorder): Completely redo to be an O(n log n)
	algorithm worst case, instead O(n^2) all the time.
	(build_dfn_array): New function.
	(eref_compare): Ditto.
	(preorder_count): Remove no-longer used variable.
	(pre_stats): Add new stats about memory use.
	(struct expr_info): add loadpre_cand member.
	(euse_node_pool): New alloc-pool
	(eref_node_pool): Ditto
	(create_expr_ref): Use them.
	(expr_phi_insertion): Insert on PHI's of VUSES for loadpre cands.
	Not all expressions have uses (left occurrences don't).
	(load_modified_real_occ_real_occ): Return false, not abort.
	(process_delayed_rename): Remove useless fibheap, do proper LVAL
	handling.
	(insert_euse_in_preorder_dt_order_1): No more ELEFT_NODE's.
	(finalize_1): Ditto.
	(set_save): Ditto.
	(really_available_def): New function.
	(finalize_2): Use really_available_def, not EUSE_SAVE, during EPHI
	minimization.
	(names_match_p): Handle INDIRECT_REF properly.
	(call_modifies_slot): Removed.
	(add_call_to_ei): Removed.
	(process_left_occs_and_kills): Fix.
	(pre_expression): Zero out counts.
	(collect_expressions): Split out from tree_perform_ssapre. Do this
	in domtree order.
	(tree_perform_ssapre): Create and free alloc-pools.
	Rename new variables that need to be renamed.

	* tree.c (tree_size): Remove ELEFT_NODE.
	(tree_node_size): Ditto.
	(is_essa_node): Ditto.

	* tree.def (ELEFT_NODE): Gone.

	* tree.h (EREF_NODE_CHECK): No more ELEFT_NODE.
	(struct tree_eref_common): Add ID flag.
	(struct tree_euse_node): Add lval flag.
	(EREF_ID): New macro.
	(EUSE_LVAL): New macro.

2003-10-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow-inline.h (add_dom_child): XMALLOC, not GGC_ALLOC,
	the bitmap.
	(clear_dom_children): XFREE the bitmap.

2003-10-22  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (new_tree_live_info, (delete_tree_live_info,
	live_worklist, set_if_valid, add_livein_if_notdef,
	calculate_live_on_entry, calculate_live_on_exit,
	add_conflicts_if_valid, dump_live_info): Use bitmap instead of sbitmap.
	(build_tree_conflict_graph): Use bitmap, Change mechanism for
	adding conflicts between live-on-entry partitions.
	* tree-ssa-live.h (struct tree_live_info_d): Switch to bitmaps.
	(partition_is_global, live_entry_blocks, live_on_exit,
	live_merge_and_clear, make_live_on_entry): Switch to bitmaps.
	* tree-ssa.c (struct _elim_graph): Remove bitmaps, use varrays.
	(new_elim_graph, clear_elim_graph, delete_elim_graph): Switch from
	old bitmap implementation.
	(elim_graph_size): New. Number of elements in elimination graph.
	(elim_graph_add_node): New. Add an element to the elim-graph.
	(elim_graph_add_edge): New. Add an edge to the elim-graph.
	(elim_graph_remove_succ_edge): New. Remove an edge for which a node
	has a successor.
	(FOR_EACH_ELIM_GRAPH_SUCC): Find all successor nodes.
	(FOR_EACH_ELIM_GRAPH_PRED): Find all predeccesor nodes.
	(eliminate_name, eliminate_build, elim_forward,
	elim_unvisited_predecessor, elim_backward, elim_create, eliminate_phi):
	Use new elim-graph routines.
	(rewrite_out_of_ssa): Enable single-definition compaction when not
	combining temporaries.

2003-10-21  Richard Henderson  <rth@redhat.com>

	* gimplify.c: Sort functions into use order, and all gimplification
	functions to the end.

2003-10-22  Jeff Law  <law@redhat.com>

	* tree-cfg.c (thread_unconditional_jumps): New function.
	(tree_block_forwards_to): Likewise.
	(cleanup_tree_cfg): Call thread_unconditional_jumps.
	* tree-flow.h (bb_ann_t): Add forwardable status bit.

	* tree-dump.c (dump_files): Add entry for TDI_none.
	(dump_begin): Do nothing for TDI_none.
	(dump_enable_all, dump_switch_p): Start our scan at TDI_none + 1.
	* tree.h (tree_dump_index): Add.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): If we have altered the
	CFG and we have variables to [re]rename, go ahead and rename them before
	starting the next iteration of the dominator optimizer.

2003-10-21  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimplify_modify_expr): Require a regvar on either
	the lhs or rhs if we're dealing with a renameable type.
	(canonicalize_component_ref): New fn.
	(gimplify_compound_lval): Use it.
	(gimplify_conversion): Use it.
	(gimplify_expr): Lose redundant STRIP_MAIN_TYPE_NOPS.
	Discard conversions in void context.

2003-10-21  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (pre_expression): Free and allocate the
	ephi_pindex_htab and phi_pred_cache in this function only.
	(phi_pred_cache): New array to store cached phi preds, to avoid
	recomputation and unnecessary copying.
	(subst_phis): Use it.
	(added_phis): array of added phis that is marked for GC.

	* Makefile.in: Add tree-ssa-pre.c to the gtype files, and
	gt-tree-ssa-pre.h to the list of generated files.

2003-10-21  Jason Merrill  <jason@redhat.com>

	PR optimization/12661
	* tree-dfa.c (get_expr_operands): Handle TRUTH_NOT_EXPR.
	* tree-simple.c (is_gimple_rhs): Allow TRUTH_NOT_EXPR.
	* gimplify.c (gimplify_expr) <TRUTH_NOT_EXPR>: Don't rewrite to an
	EQ_EXPR.

2003-10-21  Jan Hubicka  <jh@suse.cz>

	* haifa-sched.c (choose_ready): Initialize index.
	* tree-tailcall.c (bb_optimize_tail_calls): Initialize has_return.
	* f/lex.c (ffelex_cfelex_): Initialize d.

2003-10-20  Diego Novillo  <dnovillo@redhat.com>

	Fix PR optimization/12688
	* tree-dfa.c (get_stmt_operands): Don't return early when dealing
	with an empty statement.
	* tree-ssa-ccp.c (set_rhs): If the expression has no side effects,
	replace the statement with an empty statement.

2003-10-20  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-dce.c (processed): Change to an sbitmap.
	(mark_necessary): Test bits in 'processed'.
	(tree_ssa_dce): Initialize/free processed as an sbitmap.

2003-10-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (bsi_prev): Also copy the context from the previous
	iterator.

2003-10-18  Richard Henderson  <rth@redhat.com>

	* builtins.c (simplify_builtin): Handle BUILT_IN_CONSTANT_P.

2003-10-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c: New.
	* Makefile.in (tree-tailcall.o): Add.
	* function.c (assign_parms): Setting of current_function_stdarg
	moved ...
	(allocate_struct_function): ... here.
	* tree-dump.c (dump_files): Add .tail dump.
	* tree-flow.h (tree_optimize_tail_calls): Declare.
	* tree-optimize.c (optimize_function_tree): Call
	tree_optimize_tail_calls.
	* tree.h (enum tree_dump_index): Add TDI_tail.

2003-10-18  Jan Hubicka  <jh@suse.cz>

	* tree-ssa-copyprop.c (move_var_to_scope):  Do not clear abstract
	origin for static variables.

2003-10-18  Jan Hubicka  <jh@suse.cz>

	* integrate.c (copy_decl_for_inlinig): Fix copying of copies.

2003-10-18  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_analyze_function):  Fix call of estimate_num_insns.

2003-10-17  Kazu Hirata  <kazu@cs.umass.edu>

	* ChangeLog.tree-ssa: Fix typos.
	* tree-alias-common.c: Fix comment typos.
	* tree-cfg.c: Likewise.
	* tree-dfa.c: Likewise.
	* tree-eh.c: Likewise.
	* tree-flow.h: Likewise.
	* tree-iterator.h: Likewise.
	* tree-mudflap.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa-live.c: Likewise.
	* tree-ssa-live.h: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-ssa.c: Likewise.

2003-10-17  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-dce.c (processed): New Global vector.
	(mark_necessary): Check if SSA_NAME has already been processed first.
	(find_useful_stmts, process_worklist): Change call to mark_necessary().
	(tree_ssa_dce): Initialize and free processed vector.
	* tree-cfg.c (handle_switch_fallthru): A new basic block can result
	from splitting edges of nested switch stmts.
	(handle_switch_split): If a new block is created, restart the loop for
	inserting GOTO's to handle the new block.

2003-10-17  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (remove_useless_stmts_and_vars_bind): Fix handling of
	static variables.

2003-10-16  Richard Henderson  <rth@redhat.com>

	* common.opt (fdisable-gimple): Remove.
	* flags.h (flag_disable_gimple): Remove.
	* toplev.c (flag_disable_gimple): Remove.
	(process_options): Don't check it.
	(lang_independent_options): Don't set it.
	* opts.c (common_handle_option): Likewise.
	* gimplify.c (keep_function_tree_in_gimple_form): Don't check it.
	* c-semantics.c (expand_stmt_toplev): Likewise.
	* tree-optimize.c (tree_rest_of_compilation): Likewise.
	* doc/invoke.texi: Don't document it.

2003-10-16  Roger Sayle  <roger@eyesopen.com>

	* fold-const.c: Merge from mainline.
	* tree.c (associate_tree_code, commutative_tree_code): Use a
	switch statement instead of a sequence of comparisons.

2003-10-16  Richard Henderson  <rth@redhat.com>

	* gimplify.c (maybe_protect_cleanup): Remove.
	* tree-simple.h (maybe_protect_cleanup): Remove.
	* c-simplify.c (gimplify_cleanup): Don't call it.

2003-10-16  Jeff Law  <law@redhat.com>

	* tree-cfg.c (found_computed_goto): New global for computed goto
	factoring/unfactoring.
	(factored_computed_goto_label, factored_computed_goto): Likewise.
	(factor_computed_gotos): New function.
	(build_tree_cfg): Use it.
	(make_blocks): Record whether or not we find a computed goto.
	(remove_useless_stmts_and_vars): Un-factor computed gotos.
	(remove_useless_stmts_and_vars): Reset factored_computed_goto_label
	and factored_computed_goto.

	* tree-ssa-dom.c (get_value_for, set_value_for): Move to the start
	of the file.  Delete pointless sanity checking.

	* tree-ssa.c (currdefs): Now a varray instead of a hash table.
	(get_value_for, set_value_for): Corresponding changes.  Move to
	the start of the file and delete pointless sanity checking.
	(rewrite_into_ssa, dump_tree_ssa_stats): Corresponding changes.
	(var_value_hash, var_value_eq): Kill.

	* tree-ssa.c (rewrite_add_phi_arguments): Once we encounter a
	rewritten PHI break the inner loop.

	* tree-ssa.c (insert_phi_nodes_for): Use EXECUTE_IF_AND_COMPL_IN_BITMAP.

	* tree-dfa.c (create_phi_node):  Clear PHI_REWRITTEN on all new PHIs
	(remove_all_phi_nodes_for): Set PHI_REWRITTEN on any PHIs which are
	not removed.
	* tree-ssa.c (rewrite_add_phi_arguments): Check the PHI node itself
	to see if it has already been rewritten.
	* tree.h (PHI_REWRITTEN): New accessor macro.
	(struct phi_node): New field rewritten.

	* tree-flow.h (struct bb_ann_d): New field num_preds.
	* tree-dfa.c (create_phi_node): Get the number of predecessors from
	the block's annotation.
	* tree-ssa.c (rewrite_into_ssa): Compute number of preds for each
	block and store it into the block's annotation.
	(insert_phi_nodes_for): Get the number of preds for each block
	from the block's annotation.

	* tree-ssa.c: Remove parallel lifetime analysis code from April 2003.
	(def_blocks_d): Remove PHI_INSERTION_POINTS field.
	(compute_global_livein): Accept livein/def bitmaps to use for
	life analyis rather than a varray of variables.  Callers updated.
	Rewritten to compute life information for one variable at a
	time instead of several variables at once.
	(insert_phis_for_deferred_variables): Remove.
	(insert_phi_nodes_for): Lose varray argument.  Callers updated.
	No longer mess with deferring PHI insertions for variables.
	(insert_phi_nodes): No longer need to deal with deferred variables.
	Kill everything related to them.

2003-10-15  Jeff Law  <law@redhat.com>

	* domwalk.c, domwalk.h: New files.
	* Makefile.in (OBJS-common): Add domwalk.c.
	(tree-ssa-dom.o): Add dependency on $(BASIC_BLOCK_H) and domwalk.h.
	(tree-ssa.o): Add dependency on domwalk.h.
	(domwalk.o): Add dependencies.
	* tree-ssa-dom.c: Include domwalk.h.
	(cfg_altered, vars_to_rename): Now globals.
	(dom_walk_block_data): New structure for block data used by dominator
	walker.
	(optimize_block, record_equivalences_from_block_entry): Kill.
	(optimize_stmt): Lose "cfg_altered" argument.  Update callers.
	Initialize may_have_exposed_new_symbols.
	(get_value_for, set_value_for): Lose "table" argument.  Update
	callers.  Use const_and_copies table directly.
	(lookup_avail_expr): Lose "const_and_copies" argument.  Callers
	updated.
	(get_eq_expr_value): Similarly.  Also accept a pointer to the
	vrp_variables. Callers updated.
	(update_rhs_and_lookup_avail_expr): Similarly.
	(record_cond_is_true, record_cond_is_false): Similarly.
	(simplify_rhs_and_lookup_avail_expr): Similarly.
	(simplify_cond_and_lookup_avail_expr): Similarly.
	(record_equivalences_from_phis): Similarly.
	(record_equivalences_from_incoming_edge): Similarly.  Also accept
	a pointer to the block const_and_copies table and vrp_variables.
	Callers updated.
	(eliminate_redundant_computations): Similarly
	(record_equivalences_from_stmt, thread_through_successor): Similarly.
	(dom_opt_initialize_block): New function.  Perform block local
	initialization for the dominator optimizer.
	(dom_opt_finalize_block): Renamed from finalize_block.  Get
	block local varrays from walk_data.  Pop entry off block local
	data stack when complete.
	(dom_opt_walk_stmts): New function.
	(cprop_into_phis): Get block local varrays from walk_data.
	(record_range): Get vrp varray by reference than by value.
	(tree_ssa_dominator_optimize): Store incoming "vars" variable into
	global "vars_to_rename".  Initialize walk_data.  Use
	walk_dominator_tree.
	(cprop_into_stmt): Initialize may_have_exposed_new_symbols.
	* tree-ssa.c: Include domwalk.h
	(rewrite_finalize_block, rewrite_initialize_block): New functions
	extracted from rewrite_block.
	(rewrite_walk_stmts, rewrite_add_phi_arguments): Similarly.
	(rewrite_block): Kill.
	(rewrite_into_ssa): Initialize walk_data.  Use walk_dominator_tree.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_expr): Return bool.  Bail gracefully if
	fb_mayfail is set.
	(gimplify_asm_expr): Take pointer-to-expr.  Allow gimplify_expr
	to fail for lvalues, and issue appropriate error messages.  Zap
	the entire asm statement on failure.
	* tree-simple.h (enum fallback_t): Add fb_mayfail.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* c-tree.h (C_LANG_TREE_NODE_CHAIN_NEXT): New.
	(union lang_tree_node): Use it for chain_next annotation.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* c-common.c: Include tree-iterator.h.
	(c_expand_expr): Kill warn_unused_result checks.
	(c_warn_unused_result): New.
	* c-common.h (STMT_EXPR_WARN_UNUSED_RESULT): Remove.
	(c_warn_unused_result): Declare.
	* c-decl.c (finish_function): Always gimplify.  Call
	c_warn_unused_result.
	* calls.c (expand_call): Kill warn_unused_result checks.
	* Makefile.in (c-common.o): Update.

2003-10-15  Steven Bosscher  <steven@gcc.gnu.org>

	* cfghooks.c (dump_bb): Take extra `int indent' argument.
	* cfg.c (dump_bb): Take extra argument to match cfg hook.
	Write out all information about bb that is shared between the tree
	and rtl representations.
	* basic-block.c (dump_bb): Adjust prototype.
	* cfgrtl.c (rtl_dump_bb): Update prototype to match cfg hook.
	Use indent.
	* flow.c (verify_wide_reg, verify_local_live_at_start):
	Fixup dump_bb calls.
	* tree-cfg.c (dump_tree_bb): Rename to tree_dump_bb.  Remove unused
	 `prefix' argument.  Put in tree_cfg_hooks as cfg hook for dump_bb.
	(remove_bb, debug_tree_bb, dump_tree_cfg): Call dump_bb.
	* tree-ssa (dump_tree_ssa): Likewise.
	* tree-flow.h (dump_tree_bb): Replace with new tree_dump_bb
	prototype.
	* tree-pretty-print (dump_block_info): Match case of BLOCK, SUCC,
	PRED with dump_bb.

2003-10-14  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (throwaway_global): Delete.
	(andersen_same_ponts_to_set): We handle all globals individually
	now.
	* tree-alias-common.c:  Remove doxygen markers.
	(get_alias_var_decl): Always create an alias var for globals now.
	Assign the global alias vars to GLOBAL_VAR, too.
	(intra_function_call): Fix logic, do a bit of pre-filtering to
	avoid useless global aliasing.
	(get_values_from_constructor): It's the same for field based and
	not field based.
	(create_alias_vars): Remove special global var handling.
	(same_points_to_set): Ditto.
	(ptr_may_alias_var): Ditto.

2003-10-14  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_phis): Avoid doing useless work if the
	edge we care about is abnormal.
	* tree-ssa-copyprop (cprop_phi): Avoid doing useless work if the
	destination of the PHI node occurs in an abnormal PHI.

	* tree-ssa-dom.c (record_equivalences_from_stmt): Renamed from
	record_equivalances.  Caller updated.
	(record_equivalences_from_phis): New function extracted from
	optimize_block.
	(record_equivalences_from_incoming_edge): Likewise.
	(record_equivalances_from_block_entry): Likewise.
	(cprop_into_phis): Likewise.
	(optimize_stmt): Lots of code moved into new functions.  Call
	record_equivlances_from_block_entry.

	* tree-ssa-dom.c (optimize_block): Simplify interface slightly.
	Use finalize_block.  Extract edge_flags from our block's
	incoming edge as necessary.  Simplify recursive call.
	(thread_through_successor): Extracted from optimize_block.
	(finalize_block): Similarly.

	* tree-ssa-dom.c (eliminate_redundant_computations): New function
	extracted from optimize_stmt.
	(record_equivalences): Similarly.
	(optimize_stmt): Use eliminate_redundant_computations and
	record_equivalences.  If fold_stmt changes stmt, then make sure
	to get a new annotation as well.

	* tree-cfg.c (cleanup_control_flow): Pass last statement down to
	cleanup_cond_expr_graph and cleanup_switch_expr_graph.
	(cleanup_cond_expr_graph): Accept statement from caller and
	use it.  Return nonzero if the predicate was constant.  No longer
	static.
	(cleanup_switch_expr_graph): Similarly.
	(disconnect_unreachable_case_labels): Similarly, except that it
	is still static.
	* tree-flow.h (cleanup_cond_expr_graph): Prototype.
	(cleanup_switch_expr_graph): Similarly.
	* tree-ssa-dom.c (optimize_stmt): Also optimize the condition
	in a SWITCH_EXPR.  Use COND_EXPR_COND and SWITCH_COND to get
	conditions instead of relying upon known operand positions.
	Use cleanup_cond_expr_graph and cleanup_switch_expr_graph rather
	than open coding equivalents.
	(lookup_avail_expr): Handle SWITCH_EXPRs.  Use COND_EXPR_COND and
	SWITCH_COND to get conditions instead of relying upon known
	operand positions.
	(avail_expr_hash, avail_expr_eq): Similarly.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_body): Save and restore input_location;
	initialize input_location to DECL_SOURCE_LOCATION.
	(gimplify_expr): Always save and restore input_location.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* expr.c (expand_expr): Break out EXPR_LOCUS code from ...
	(expand_expr_1): ... here, renamed from expand_expr.

2003-10-13  Richard Henderson  <rth@redhat.com>

	* c-simplify.c (c_gimplify_stmt): Upreate on location_t and not
	fine and line individually.
	(gimplify_c_loop, gimplify_switch_stmt): Likewise.
	* gimplify.c (wfl_locus): Merge wfl_filename+wfl_lineno.
	(annotate_all_with_locus_1): Rename from annotate_stmt_with_file_line.
	(annotate_all_with_locus): Replace annotate_all_with_file_line;
	update all callers.
	* tree-simple.h: Update.
	* tree.c, tree.h (annotate_with_locus): New.

2003-10-13  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-flow-inline.h (def_ops): Take a stmt_ann_t as argument
	instead of a tree.
	(use_ops): Likewise.
	(vdef_ops): Likewise.
	(vuse_ops): Likewise.
	* tree-flow.h: Update prototypes.
	* tree-cfg.c (remove_stmt): Load the statement annotation.
	Adjust *_ops calls.
	* tree-dfa.c (compute_immediate_uses_for_stmt,
	mark_new_vars_to_rename): Likewise.
	* tree-pretty-print.c (dump_vops): Likewise.
	* tree-ssa-ccp.c (tree_ssa_ccp): Likewise.  Also remove now
	superfluous stmt_ann() calls.
	(visit_stmt, cpp_fold, add_var_to_ssa_edges_worklist,
	initialize, replace_uses_in, likely_value): Likewise.
	* tree-ssa-copyprop.c (copyprop_stmt): Likewise.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
	* tree-ssa-dom.c (cprop_into_stmt, optimize_stmt,
	avail_expr_hash, avail_expr_eq):
	Likewise.
	* tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
	build_tree_conflict_graph): Likewise.
	* tree-ssa-pre.c (maybe_find_rhs_use_for_var,
	expr_phi_insertion, same_e_version_real_occ_real_occ,
	generate_expr_as_of_bb, bool load_modified_real_occ_real_occ,
	bool same_e_version_phi_result, get_default_def,reaching_def,
	tree_perform_ssapre): Likewise.
	* tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmt):
	Likewise.

2003-10-12  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_array_ref_to_plus): Be prepared for
	null TYPE_DOMAIN or TYPE_MIN_VALUE for the array.
	* tree-ssa-ccp.c (fold_indirect_refs_r): Likewise.

2003-10-12  Richard Henderson  <rth@redhat.com>

	* tree.h (struct tree_common): Rename unused_1 to invariant_flag.
	(TREE_INVARIANT): New.
	* builtins.c (build_string_literal): Set TREE_INVARIANT.
	* c-common.c (fix_string_type): Likewise.
	* c-typeck.c (build_external_ref): Likewise.
	(build_c_cast, pop_init_level): Likewise.
	* fold-const.c (fold_convert, fold): Likewise.
	* tree.c (make_node, build_constructor): Likewise.
	(build, build1): Likewise.
	(staticp): Pass unknown component references to the language.
	(save_expr): Check TREE_INVARIANT instead of TREE_CONSTANT.
	(skip_simple_arithmetic): Likewise.
	(stabilize_reference_1): Likewise.
	* print-tree.c (print_node): Print TREE_INVARIANT.

	* c-common.c (pointer_int_sum): Rely on build to set TREE_CONSTANT.
	(finish_label_address_expr): Likewise.
	* c-typeck.c (default_function_array_conversion): Likewise.
	(parser_build_binary_op, pointer_diff): Likewise.
	(build_unary_op, build_binary_op): Likewise.
	* fold-const.c (non_lvalue): Likewise.

	* tree-pretty-print.c (dump_generic_node): Handle VIEW_CONVERT_EXPR.

2003-10-12  Richard Henderson  <rth@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_array_ref_to_plus): Subtract the array
	domain minimum index.
	(gimplify_addr_expr): Expand ARRAY_REFs.  Cope with Fortran
	missing cast wierdnesses.
	* tree-dfa.c (get_expr_operands): Handle (&v + c); abort on
	other address invariants that should have been folded.
	(vdefs_disappeared_p): New.
	(mark_new_vars_to_rename): Use it.  Move from ...
	* tree-ssa-dom.c: ... here.
	* tree-flow-inline.h (is_unchanging_value): Remove; use
	is_gimple_min_invariant everywhere instead.
	(phi_ssa_name_p): New.
	* tree-must-alias.c (find_addressable_vars): Process PHIs.
	* tree-simple.c (is_gimple_min_invariant): Rename from
	is_gimple_const; allow non-static variable addresses; update callers.
	(is_gimple_val): Remove ADDR_EXPR checks.
	* tree-simple.h: Update.
	* tree-ssa-ccp.c (replace_uses_in): Add replaced_address argument.
	(substitute_and_fold): Use that to mark_new_vars_to_rename.
	(fold_indirect_refs_r): New.
	(fold_stmt): Use it.
	* tree-ssa-copyprop.c (copyprop_stmt): Call fold_stmt.
	* tree-ssa-dce.c (NECESSARY): Use asm_written_flag.
	(mark_necessary): Reject DECLs.
	* tree-ssa-live.c (register_ssa_partition): Use phi_ssa_name_p.
	* tree-ssa-pre.c (generate_expr_as_of_bb): Call fold_stmt if we
	replaced with constants.
	* tree-ssa.c (insert_copy_on_edge): Unwrap ADDR_EXPRs to set_is_used.
	(eliminate_build, coalesce_abnormal_edges, coalesce_vars): Use
	phi_ssa_name_p.

2003-10-09  Frank Ch. Eigler  <fche@redhat.com>

	java/12211
	* gimplify.c (gimplify_save_expr): Tolerate void-typed saved
	expressions.

2003-10-09  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_call_clobber_ops): If a variable is read-only,
	add a VUSE operand instead of VDEF.

2003-10-08  Jason Merrill  <jason@redhat.com>

	PR optimization/12525
	* tree-dfa.c (note_addressable): New fn, split out from...
	(add_stmt_operands): Here.
	(get_stmt_operands) <ASM_EXPR>: Call it for mem ops.
	* gimplify.c (gimplify_asm_expr): Call parse_input_constraint
	directly.  It's only a mem op if allows_mem is set.

2003-10-08  Diego Novillo  <dnovillo@redhat.com>

	PR/12187
	* tree-dfa.c (add_stmt_operand): Test against current_function_decl
	when checking for global variables.
	(may_access_global_mem_p): Likewise.
	(add_referenced_var): Likewise.
	Consider DECL_NONLOCAL variables call clobbered and used.
	(find_hidden_use_vars): Do not test for DECL_NONLOCAL variables.
	* tree-optimize.c (tree_rest_of_compilation): Test against
	current_function_decl when checking for global variables.
	* tree-ssa-ccp.c (get_default_value): Likewise.
	* tree-ssa-dce.c (need_to_preserve_store): Likewise.

2003-10-07  Jason Merrill  <jason@redhat.com>

	PR optimization/12525
	* gimplify.c (gimplify_asm_expr): If the constraint doesn't allow
	a register, call mark_addressable.  Split an in/out operand that
	does allow a register into separate input and output operands.

2003-10-06  Richard Henderson  <rth@redhat.com>

	* fold-const.c (fold): Fold (T1)((T2)X op Y) into (T1)X op Y,
	for suitable values of T1 & T2.

2003-10-06  Andrew Macleod  <amacleod@redhat.com>

	* tree-dfa.c (compute_immediate_uses): Add optional callback.
	(compute_immediate_uses_for_phi): Remove unused parameter. Add optional
	callback to determine if usage info should be calculated for variable.
	(compute_immediate_uses_for_stmt): Add optional callback to determine
	if usage info should be calculated for variable.
	* tree-flow.h (compute_immediate_uses): Update prototype.
	* tree-ssa-ccp.c (need_imm_uses_for): New. Callback function passed to
	compute_immediate_uses.
	(initialize): Calculate defaults initially, then build reduced
	immediate use information.
	(get_default_value): Non empty stmt's which are not a PHI_NODE or
	a MODIFY_EXPR default to VARYING.

2003-10-06  Andrew Macleod  <amacleod@redhat.com>

	* tree-cfg.c (tree_split_edge): Mark edge as FALLTHRU when splitting.

2003-10-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa.c (rewrite_block): Test vars_to_rename instead of
	PHI_ARG_CAPACITY.
	* tree-dfa.c (remove_phi_arg_num): Don't update
	PHI_ARG_CAPACITY.

2003-10-01  Richard Henderson  <rth@redhat.com>

	* c-decl.c (set_decl_nonlocal): New.
	(store_parm_decls): Use it via walk_tree.

2003-10-01  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_stmt): New function extracted from
	optimize_stmt.
	(optimize_stmt): Use cprop_into_stmt.

2003-09-30  Richard Henderson  <rth@redhat.com>

	* function.h (struct function): Add function_end_locus.
	* c-decl.c (finish_function): Set it.
	* tree-optimize.c (tree_rest_of_compilation): Set input_location
	to function_end_locus before expand_function_end.

	* tree-optimize.c (optimize_function_tree): Move calls to
	remove_useless_stmts_and_vars and lower_eh_constructs ...
	(tree_rest_of_compilation): ... here.

	* c-simplify.c (gimplify_expr_stmt): Don't warn for any statement
	with void result type.

2003-09-30  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Fix thinko
	in test for swapping ranges.

	* tree-ssa-dom.c (record_range): New function.
	(extract_range_from_cond): Likewise.
	(tree_ssa_dominator_optimize): Initialize the vrp_data varray.
	(optimize_block): Initialize the vrp_variables varray.  Wipe
	appropriate entries from the VRP varrays when done processing a block.
	(get_eq_expr_value): Accept new argument "bb".  Call record_range
	appropriately.  Refactor code to avoid useless work.
	(simplify_cond_and_lookup_avail_expr): Use value range records to
	simplify conditions.
	(simplify_rhs_and_lookup_avail_expr): When simplifying ABS_EXPR,
	DIV_EXPR and MOD_EXPR, use simplify_cond_and_lookup_avail_expr
	to determine the range of the given variable.

	* tree-ssa-dom.c (find_equivalent_equality_comparison): Do not
	look through a typecast which narrows a value.

2003-09-30  Paul Brook  <paul@nowt.org>

	* Makefile.in: Add rules for check-gfortran.

2003-09-29  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_cond_expr): Fix both arms dead return value.

2003-09-29  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): New function.
	(find_equivalent_equality_comparison): Likewise.
	(optimize_block): Remove code to build a == c equivalence after
	seeing a == b and b == c.  Remove code to walk backwards
	though typecasts to record equivalences and move relevant parts
	into find_equivalent_equality_comparison.
	(optimize_stmt): Call simplify_cond_and_lookup_avail_expr.

2003-09-28  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_call_expr): Annotate all call_exprs.
	* tree-inline.c (expand_call_inline): Set input_location based
	on EXPR_LOCUS; save and restore input_location around that.
	(walk_tree): Do not set input_location.

2003-09-27  Graham Stott  <graham.stott@btinternet.com>

	* expr.c (expand_expr)[CATCH_EXPR]: Fix bogus return value.

2003-09-26  Andrew MacLeod  <amacloeod@redhat.com>

	* tree-ssa-dom.c (struct var_value_d): Remove.
	(const_and_copies): Change to a varray_type.
	(tree_ssa_dominator_optimize): Initialize const_and_copies as a varray.
	(optimize_block): Simply set the value in const_and_copies.
	(dump_dominator_optimization_stats): No hash stats for const_and_copies.
	(record_cond_is_true, record_cond_is_false,
	simplify_rhs_and_lookup_avail_expr, update_rhs_and_lookup_avail_expr):
	Parameter const_and_copies is now a varray_type.
	(var_value_hash, var_value_eq): Remove.
	(get_value_for, set_value_for): Access varray elements.
	(get_eq_expr_value): Parameter const_and_copies is now a varray_type.

	* tree-cfg.c (handle_switch_split): Update container of previous stmt.

2003-09-25  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (split_critical_edges): New function, temporarily
	disabled until some edge splitting/insertion problems are fixed.
	(opnum_of_ephi): Take an edge argument, constify. Use hash table lookup.
	Update all calle