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| author | Jakub Jelinek <jakub@redhat.com> | 2010-12-16 22:44:02 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-12-16 22:44:02 +0100 |
| commit | bcdae749d017a08b7298f86dd732b91edb84c2bd (patch) | |
| tree | a6b941ced8b02130c5e8c8bcf0b55996d0d50ca7 /gcc/tree-ssa-ter.c | |
| parent | 94406344b56752b35b729e97a85ce2a922ad6338 (diff) | |
| download | gcc-bcdae749d017a08b7298f86dd732b91edb84c2bd.zip gcc-bcdae749d017a08b7298f86dd732b91edb84c2bd.tar.gz gcc-bcdae749d017a08b7298f86dd732b91edb84c2bd.tar.bz2 | |
re PR tree-optimization/43655 (-ftree-ter causes FAIL: g++.old-deja/g++.law/temps5.C execution test)
PR tree-optimization/43655
* tree-ssa-ter.c (is_replaceable_p): Don't use
gimple_references_memory_p for -O0, instead check for load
by looking at rhs.
* g++.dg/opt/pr43655.C: New test.
From-SVN: r167955
Diffstat (limited to 'gcc/tree-ssa-ter.c')
| -rw-r--r-- | gcc/tree-ssa-ter.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-ssa-ter.c b/gcc/tree-ssa-ter.c index 7bd7669..47954cf 100644 --- a/gcc/tree-ssa-ter.c +++ b/gcc/tree-ssa-ter.c @@ -416,7 +416,9 @@ is_replaceable_p (gimple stmt) return false; /* Without alias info we can't move around loads. */ - if (gimple_references_memory_p (stmt) && !optimize) + if (!optimize + && gimple_assign_single_p (stmt) + && !is_gimple_val (gimple_assign_rhs1 (stmt))) return false; /* Float expressions must go through memory if float-store is on. */ |