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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-original" } */
 
int test1(int a, int b)
{
  return (a ^ b) == a;
}
 
int test2(int c, int d)
{
  return (c ^ d) != c;
}
 
int test3(int e, int f)
{
  return (e ^ f) == f;
}
 
int test4(int g, int h)
{
  return (g ^ h) != h;
}
 
/* { dg-final { scan-tree-dump-times "b == 0" 1 "original" } } */
/* { dg-final { scan-tree-dump-times "d != 0" 1 "original" } } */
/* { dg-final { scan-tree-dump-times "e == 0" 1 "original" } } */
/* { dg-final { scan-tree-dump-times "g != 0" 1 "original" } } */
/* { dg-final { cleanup-tree-dump "original" } } */