diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-07-13 15:41:02 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-07-13 15:41:02 +0000 |
| commit | 5acf83059e6f7ff2abfad7be86598013db509c6f (patch) | |
| tree | 09665852468f06599133d7e15cdbb53604802650 /gcc/testsuite/gcc.dg/pr32721.c | |
| parent | f82380e4321a278757b21cd8919e33183b39a733 (diff) | |
| download | gcc-5acf83059e6f7ff2abfad7be86598013db509c6f.tar.gz | |
2007-07-13 Richard Guenther <rguenther@suse.de>
PR tree-optimization/32721
* tree-ssa-ccp.c (maybe_fold_stmt_indirect): Preserve
TREE_THIS_VOLATILE on the folded reference.
* tree-ssa-operands.c (get_expr_operands): Set has_volatile_ops
if the array reference has TREE_THIS_VOLATILE set.
* gcc.dg/pr32721.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@126624 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/pr32721.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr32721.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr32721.c b/gcc/testsuite/gcc.dg/pr32721.c new file mode 100644 index 00000000000..392937ebbf6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr32721.c @@ -0,0 +1,18 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +int spinlock[2]; +int main () +{ +volatile int * spinlock0; +volatile int * spinlock1; +spinlock0 = &spinlock[0]; +spinlock1 = &spinlock[1]; + +*spinlock0 = 0; +*spinlock1 = 0; + while (*spinlock0); +} + +/* { dg-final { scan-tree-dump "= spinlock.0." "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |