gcc/testsuite/gcc.dg/tree-ssa/popcount3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-phiopt3 -fdump-tree-optimized" } */
   3
   4 int PopCount (long b) {
   5     int c = 0;
   6
   7     while (b) {
   8         b &= b - 1;
   9         c++;
  10     }
  11     return c;
  12 }
  13
  14 /* { dg-final { scan-tree-dump-times "__builtin_popcount" 1 "optimized" } } */
  15 /* { dg-final { scan-tree-dump-times "if" 0 "phiopt3" } } */