gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-29.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-dse-details" } */
   3
   4 struct z {
   5   int a;
   6   int b;
   7   int c;
   8 };
   9
  10 int
  11 foo(int cond, struct z *s)
  12 {
  13
  14   if (cond)
  15     {
  16       s->a = 1;
  17       s->b = 2;
  18       s->c = 3;
  19     }
  20   __builtin_memset (s, 0, sizeof (struct z));
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "Deleted dead store" 3 "dse1"} } */
  24 /* { dg-final { scan-tree-dump-not "Deleted dead store" "dse2"} } */
  25 /* { dg-final { scan-tree-dump-not "Deleted dead store" "dse3"} } */
  26