gcc/testsuite/gcc.dg/fold-minus-2.c

/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-cddce1" } */

int
fn1 (int a, int b)
{
  int tem1 = a | b;
  int tem2 = a ^ b;
  return tem1 - tem2;
}

int
fn2 (int a, int b)
{
  int tem1 = b | a;
  int tem2 = a ^ b;
  return tem1 - tem2;
}

int
fn3 (int a, int b)
{
  int tem1 = a | b;
  int tem2 = b ^ a;
  return tem1 - tem2;
}

int
fn4 (int a, int b)
{
  int tem1 = b | a;
  int tem2 = b ^ a;
  return tem1 - tem2;
}

/* { dg-final { scan-tree-dump-not " \\^ " "cddce1" } } */
/* { dg-final { scan-tree-dump-not " \\| " "cddce1" } } */