gcc/testsuite/gcc.dg/tree-ssa/alias-32.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-cddce1" } */
   3
   4 int bar (short *p)
   5 {
   6   int res = *p;
   7   struct { int *q1; int *q2; } q;
   8   q.q1 = __builtin_aligned_alloc (128, 128 * sizeof (int));
   9   q.q2 = __builtin_aligned_alloc (128, 128 * sizeof (int));
  10   *q.q1 = 1;
  11   *q.q2 = 2;
  12   return res + *p + *q.q1 + *q.q2;
  13 }
  14
  15 /* There should be only one load from *p left.  All stores and all
  16    other loads should be removed.  Likewise the calls to aligned_alloc.  */
  17
  18 /* { dg-final { scan-tree-dump-times "\\\*\[^ \]" 1 "cddce1" } } */
  19 /* { dg-final { scan-tree-dump-not "aligned_alloc" "cddce1" } } */