gcc/testsuite/gcc.dg/pr47391.c

   1 /* PR tree-optimization/47391 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4
   5 const volatile int v = 1;
   6 int i = 0;
   7
   8 void
   9 foo (void)
  10 {
  11   i = v;
  12 }
  13
  14 int
  15 main (void)
  16 {
  17   foo ();
  18   return 0;
  19 }
  20
  21 /* { dg-final { scan-tree-dump-not "i = 1;" "optimized" } } */