gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-dse1" } */
   3
   4 foo( int *a)
   5 {
   6   *a = 5;
   7   *a = 3;
   8 }
   9
  10
  11
  12
  13 /* We should eliminate the first assignment to *p, but not the second.  */
  14 /* { dg-final { scan-tree-dump-times "= 5" 0 "dse1"} } */
  15 /* { dg-final { scan-tree-dump-times "= 3" 1 "dse1"} } */
  16
  17 /* { dg-final { cleanup-tree-dump "dse1" } } */
  18
  19