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| author | Jakub Jelinek <jakub@redhat.com> | 2012-01-01 00:53:57 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-01-01 00:53:57 +0100 |
| commit | 45a5b21a77abdc519b14f8c1a8d3340b58be43f2 (patch) | |
| tree | eae0d52d578dbcd38c56a08992fb9bb1ddb7b2ac /gcc/testsuite/gcc.dg/pr51683.c | |
| parent | 6f2ffb4b99ccfb64adc0edc9998329ee9de32eff (diff) | |
| download | gcc-45a5b21a77abdc519b14f8c1a8d3340b58be43f2.zip gcc-45a5b21a77abdc519b14f8c1a8d3340b58be43f2.tar.gz gcc-45a5b21a77abdc519b14f8c1a8d3340b58be43f2.tar.bz2 | |
re PR tree-optimization/51683 (__builtin_memcpy etc. with constant first argument optimized away by ccp)
PR tree-optimization/51683
* tree-ssa-propagate.c (substitute_and_fold): Don't optimize away
calls with side-effects.
* tree-ssa-ccp.c (ccp_fold_stmt): Likewise.
* gcc.dg/pr51683.c: New test.
From-SVN: r182761
Diffstat (limited to 'gcc/testsuite/gcc.dg/pr51683.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr51683.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr51683.c b/gcc/testsuite/gcc.dg/pr51683.c new file mode 100644 index 0000000..f5a4a8be --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr51683.c @@ -0,0 +1,18 @@ +/* PR tree-optimization/51683 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +static inline void * +bar (void *p, void *q, int r) +{ + return __builtin_memcpy (p, q, r); +} + +void * +foo (void *p) +{ + return bar ((void *) 0x12345000, p, 256); +} + +/* { dg-final { scan-tree-dump "memcpy" "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |