gcc/testsuite/gcc.dg/tree-ssa/modref-dse-6.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized"  } */
   3 int
   4 main()
   5 {
   6   int a,b;
   7   __attribute__ ((noinline))
   8   void kill_me()
   9   {
  10     a=1234;
  11     b=2234;
  12   }
  13   a=0;
  14   b=1234;
  15   __attribute__ ((noinline))
  16   int reta()
  17   {
  18     return a;
  19   }
  20   return reta();
  21 }
  22 /* { dg-final { scan-tree-dump-not "kill_me" "optimized" } } */
  23 /* { dg-final { scan-tree-dump-not "1234" "optimized" } } */