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| author | Jeff Law <law@redhat.com> | 2019-06-26 15:36:27 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2019-06-26 15:36:27 -0600 |
| commit | 3fe0ddc88334f9afd622458653a6d103948994bd (patch) | |
| tree | e8a0a198a8f1f0670e7862902b0f7deceeef4afd /libgcc | |
| parent | 9f962469cabc7fdc2ee830125a5cb4e61e1632e4 (diff) | |
| download | gcc-3fe0ddc88334f9afd622458653a6d103948994bd.zip gcc-3fe0ddc88334f9afd622458653a6d103948994bd.tar.gz gcc-3fe0ddc88334f9afd622458653a6d103948994bd.tar.bz2 | |
re PR tree-optimization/90883 (Generated code is worse if returned struct is unnamed)
PR tree-optimization/90883
* tree-ssa-alias.c (stmt_kills_ref_p): Handle BUILT_IN_CALLOC.
* tree-ssa-dse.c: Update various comments to distinguish between
dead and redundant stores.
(initialize_ao_ref_for_dse): Handle BUILT_IN_CALLOC.
(dse_optimize_redundant_stores): New function.
(delete_dead_or_redundant_call): Renamed from delete_dead_call.
Distinguish between dead and redundant calls in dump output. All
callers updated.
(delete_dead_or_redundant_assignment): Similarly for assignments.
(dse_optimize_stmt): Handle _CHK variants. For statements which
store 0 into multiple memory locations, try to prove a subsequent
store is redundant.
PR tree-optimization/90883
* g++.dg/tree-ssa/pr90883.C: New test.
* gcc.dg/tree-ssa/ssa-dse-36.c: New test.
From-SVN: r272717
Diffstat (limited to 'libgcc')
0 files changed, 0 insertions, 0 deletions