gcc/testsuite/gcc.dg/store_merging_7.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target non_strict_align } */
   3 /* { dg-options "-O2 -fdump-tree-store-merging" } */
   4
   5 /* Check that we can merge consecutive array members through the pointer.
   6    PR rtl-optimization/23684.  */
   7
   8 void
   9 foo (char *input)
  10 {
  11   input = __builtin_assume_aligned (input, 8);
  12   input[0] = 'H';
  13   input[1] = 'e';
  14   input[2] = 'l';
  15   input[3] = 'l';
  16   input[4] = 'o';
  17   input[5] = ' ';
  18   input[6] = 'w';
  19   input[7] = 'o';
  20   input[8] = 'r';
  21   input[9] = 'l';
  22   input[10] = 'd';
  23   input[11] = '\0';
  24 }
  25
  26 /* { dg-final { scan-tree-dump-times "Merging successful" 1 "store-merging" } } */