gcc/testsuite/gcc.dg/store_merging_23.c

   1 /* PR tree-optimization/86844 */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target store_merge } */
   4 /* { dg-options "-O2 -fdump-tree-store-merging" } */
   5
   6 void
   7 foo (int *p)
   8 {
   9   *p = 0;
  10   int one = 1;
  11   __builtin_memcpy ((char *) p + 3, &one, sizeof (int));
  12   *((char *)p + 4) = *((char *)p + 36);
  13   *((char *)p + 1) = 2;
  14 }
  15
  16 /* { dg-final { scan-tree-dump-not "Merging successful" "store-merging" } } */