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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized" } */
   3
   4 /* Testcase for PR31657.  */
   5
   6 int foo (int x, int a, int b)
   7 {
   8   int c = 1 << a;
   9   if (x & c)
  10     if (x & (1 << b))
  11       /* returning 1 causes phiopt to trigger in */
  12       return 2;
  13   return 0;
  14 }
  15
  16 /* { dg-final { scan-tree-dump "\\|" "optimized" } } */
  17 /* { dg-final { cleanup-tree-dump "optimized" } } */