diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/alias-31.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/alias-31.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/alias-31.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/alias-31.c new file mode 100644 index 000000000..622df80a9 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/alias-31.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-sra -fdump-tree-cddce1" } */ + +extern int posix_memalign(void **memptr, + __SIZE_TYPE__ alignment, __SIZE_TYPE__ size); + +int foo (float *p) +{ + int res = *p; + struct { void *q1; void *q2; } q; + if (posix_memalign (&q.q1, 128, 128 * sizeof (int)) != 0) + return 0; + if (posix_memalign (&q.q2, 128, 128 * sizeof (int)) != 0) + return 0; + *((int *)q.q1) = 1; + *((int *)q.q2) = 2; + return res + *p + *((int *)q.q1) + *((int *)q.q2); +} + +/* There should be only one load from *p left. All stores and all + other loads should be removed. */ + +/* { dg-final { scan-tree-dump-times "\\\*\[^ \]" 1 "cddce1" } } */ +/* { dg-final { cleanup-tree-dump "cddce1" } } */ |