/* { dg-do compile } *//* { dg-options "-O2 -fdump-tree-optimized" } */intmain(int a,int b,int c,int d){/* Should become just a & b & c & d */int e = (a & b) & (c & d);int f = (c & a) & (b & d);return e & f;}/* { dg-final { scan-tree-dump-times "\\\& " 3 "optimized"} } */