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| author | Richard Biener <rguenther@suse.de> | 2014-11-24 09:24:26 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-11-24 09:24:26 +0000 |
| commit | f3dccf50915b31fcc3e03e82fd09ccef243b30e3 (patch) | |
| tree | 0be6bb876980671d95c871e28f5d9cd9ae32a175 /gcc/tree-data-ref.c | |
| parent | 8f901c12f41dd917c47f10cf7ba85e5884b04882 (diff) | |
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re PR tree-optimization/55334 (mgrid regression (ipa-cp disables vectorization))
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.
* gimple-fold.c (maybe_canonicalize_mem_ref_addr): Avoid
throwing away dependence info.
* 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.
From-SVN: r218004
Diffstat (limited to 'gcc/tree-data-ref.c')
| -rw-r--r-- | gcc/tree-data-ref.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index cca569a..909751c 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -991,9 +991,12 @@ 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); + MR_DEPENDENCE_CLIQUE (ref) = MR_DEPENDENCE_CLIQUE (old); + MR_DEPENDENCE_BASE (ref) = MR_DEPENDENCE_BASE (old); access_fns.safe_push (access_fn); } } @@ -1400,6 +1403,12 @@ 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 pointer-based 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 |