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| author | Andrew Senkevich <andrew.senkevich@intel.com> | 2015-02-27 20:35:05 +0300 |
|---|---|---|
| committer | Andrew Senkevich <andrew.senkevich@intel.com> | 2015-02-27 20:35:05 +0300 |
| commit | 6278c3db6b4eb6f38ccd27c1227452ad9915db28 (patch) | |
| tree | 7382c5f9da59cc3cdb935167b977ea13cf1acbd1 /gcc-4.9/gcc/tree-data-ref.c | |
| parent | f8623c7fd5ebd974202059297c57c705b34eab7a (diff) | |
| download | toolchain_gcc-6278c3db6b4eb6f38ccd27c1227452ad9915db28.tar.gz toolchain_gcc-6278c3db6b4eb6f38ccd27c1227452ad9915db28.tar.bz2 toolchain_gcc-6278c3db6b4eb6f38ccd27c1227452ad9915db28.zip | |
[4.9] Additional SLM tuning. Backport from trunk.
2014-11-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/55334
* function.h (struct function): Add last_clique member.
* tree-inline.c (remap_dependence_clique): New function.
(remap_gimple_op_r): Remap dependence cliques in MEM_REFs.
(copy_tree_body_r): Likewise.
(copy_cfg_body): Free dependence map.
(copy_gimple_seq_and_replace_locals): Likewise.
* tree-pretty-print.c (dump_generic_node): Dump
dependence info.
* tree-ssa-alias.c (refs_may_alias_p_1): Use dependence info
to answer alias query.
* tree-ssa-structalias.c: Include tree-phinodes.h, ssa-iterators.h,
tree-pretty-print.h and gimple-walk.h.
(struct variable_info): Add is_restrict_var flag and ruid
member.
(new_var_info): Initialize is_restrict_var.
(make_constraint_from_restrict): Likewise.
(create_variable_info_for): Exclude restricts from global vars
from new handling.
(intra_create_variable_infos): But not those from parameters.
(visit_loadstore): New function.
(maybe_set_dependence_info): Likewise.
(compute_dependence_clique): Likewise.
(compute_may_aliases): Call compute_dependence_clique.
* tree-data-ref.c (dr_analyze_indices): Copy dependence info
to fake MEM_REF.
(dr_may_alias_p): Use recorded dependence info to answer
alias query.
* tree-core.h (struct tree_base): Add clique, base struct in
union.
* tree.h (MR_DEPENDENCE_CLIQUE): New macro.
(MR_DEPENDENCE_BASE): Likewise.
* tree-inline.h (dependence_hasher): New hash-map kind.
(struct copy_body_data): Add dependence_map pointer.
* tree-streamer-in.c (unpack_value_fields): Stream dependence info.
* tree-streamer-out.c (streamer_pack_tree_bitfields): Likewise.
* gcc.dg/tree-ssa/restrict-5.c: New testcase.
Change-Id: I45c8d5eac758aea881a884c131f627cc916cbaf3
Signed-off-by: Andrew Senkevich <andrew.senkevich@intel.com>
Diffstat (limited to 'gcc-4.9/gcc/tree-data-ref.c')
| -rw-r--r-- | gcc-4.9/gcc/tree-data-ref.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/tree-data-ref.c b/gcc-4.9/gcc/tree-data-ref.c index 01d0a7a79..f279bf391 100644 --- a/gcc-4.9/gcc/tree-data-ref.c +++ b/gcc-4.9/gcc/tree-data-ref.c @@ -979,10 +979,13 @@ dr_analyze_indices (struct data_reference *dr, loop_p nest, loop_p loop) guaranteed. As a band-aid, mark the access so we can special-case it in dr_may_alias_p. */ + tree old = ref; ref = fold_build2_loc (EXPR_LOCATION (ref), MEM_REF, TREE_TYPE (ref), base, memoff); DR_UNCONSTRAINED_BASE (dr) = true; + MR_DEPENDENCE_CLIQUE (ref) = MR_DEPENDENCE_CLIQUE (old); + MR_DEPENDENCE_BASE (ref) = MR_DEPENDENCE_BASE (old); access_fns.safe_push (access_fn); } } @@ -1389,6 +1392,12 @@ dr_may_alias_p (const struct data_reference *a, const struct data_reference *b, return false; } + if ((TREE_CODE (addr_a) == MEM_REF || TREE_CODE (addr_a) == TARGET_MEM_REF) + && (TREE_CODE (addr_b) == MEM_REF || TREE_CODE (addr_b) == TARGET_MEM_REF) + && MR_DEPENDENCE_CLIQUE (addr_a) == MR_DEPENDENCE_CLIQUE (addr_b) + && MR_DEPENDENCE_BASE (addr_a) != MR_DEPENDENCE_BASE (addr_b)) + return false; + /* If we had an evolution in a MEM_REF BASE_OBJECT we do not know the size of the base-object. So we cannot do any offset/overlap based analysis but have to rely on points-to information only. */ |