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re PR rtl-optimization/56151 (Performance degradation after r194054 on x86 Atom.)
authorJakub Jelinek <jakub@redhat.com>
Tue, 12 Feb 2013 10:37:38 +0000 (11:37 +0100)
committerJakub Jelinek <jakub@gcc.gnu.org>
Tue, 12 Feb 2013 10:37:38 +0000 (11:37 +0100)
commit6da26889318467b3df29c215f15d0c8369c969e3
treef65fc19aa8ddb84c4b86e34d59f3e05f225bb1c1tree
parent1590a83511111c9621a72800b361589aa11734b9commit | diff
re PR rtl-optimization/56151 (Performance degradation after r194054 on x86 Atom.)

PR rtl-optimization/56151
* optabs.c (add_equal_note): Don't return 0 if target is a MEM,
equal to op0 or op1, and last_insn pattern is CODE operation
with MEM dest and one of the operands matches that MEM.

* gcc.target/i386/pr56151.c: New test.

Co-Authored-By: Steven Bosscher <steven@gcc.gnu.org>
From-SVN: r195972
gcc/ChangeLog diff | blob | history
gcc/optabs.c diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.target/i386/pr56151.c [new file with mode: 0644] blob