gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-27.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1-details" } */
   3
   4 int *q;
   5 void __attribute__((noinline))
   6 bar (void)
   7 {
   8   *q = 1;
   9 }
  10 int foo(int which_p)
  11 {
  12   int x = 0;
  13   int *i,*j;
  14   int **p;
  15   if (which_p)
  16     p = &i;
  17   else
  18     p = &j;
  19   *p = &x;
  20   bar ();
  21   return x;
  22 }
  23
  24 /* { dg-final { scan-tree-dump "Replaced x with 0" "fre1" } } */
  25 /* { dg-final { cleanup-tree-dump "fre1" } } */