gcc/testsuite/gcc.dg/tree-ssa/pr110539-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3 int f(int a)
   4 {
   5         int b = a & 1;
   6         int c = b != 0;
   7         return c == b;
   8 }
   9
  10 /* This should be optimized to just return 1; */
  11 /* { dg-final { scan-tree-dump-not " == " "optimized"} } */
  12 /* { dg-final { scan-tree-dump "return 1;" "optimized"} } */