gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-11.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-dse1-details" } */
   3
   4 extern void abort(void);
   5 void foo(int *p)
   6 {
   7   while (1)
   8    {
   9       *p = 1;
  10       *p = 0;
  11    }
  12 }
  13 void bar(int *p)
  14 {
  15   *p = 1;
  16   *p = 0;
  17   abort ();
  18 }
  19
  20 /* { dg-final { scan-tree-dump-times "Deleted dead store" 2 "dse1" } } */