gcc/testsuite/gcc.dg/fold-popcount-11.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 int foo(unsigned short x)
   5 {
   6   unsigned short t1 = __builtin_bswap16(x);
   7   unsigned int t2 = t1;
   8   return __builtin_popcount (t2);
   9 }
  10
  11 int fool(unsigned short x)
  12 {
  13   unsigned short t1 = __builtin_bswap16(x);
  14   unsigned long t2 = t1;
  15   return __builtin_popcountl (t2);
  16 }
  17
  18 int fooll(unsigned short x)
  19 {
  20   unsigned short t1 = __builtin_bswap16(x);
  21   unsigned long long t2 = t1;
  22   return __builtin_popcountll (t2);
  23 }
  24
  25 /* { dg-final { scan-tree-dump-not "bswap" "optimized" } } */