1 /* { dg-do compile } */ 2 /* { dg-options "-O2 -fdump-tree-optimized" } */ 3 4 int foo(_Bool a,_Bool b)5 foo (_Bool a, _Bool b) 6 { 7 return (a | !a) | (!b | b); 8 } 9 10 /* { dg-final { scan-tree-dump-times "return 1" 1 "optimized" } } */ 11