gcc/testsuite/gcc.dg/fold-parity-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 int test_and4(unsigned int a)
   5 {
   6   return __builtin_parity(a&4);
   7 }
   8
   9 int test_and4l(unsigned long b)
  10 {
  11   return __builtin_parityl(b&4);
  12 }
  13
  14 int test_and4ll(unsigned long long c)
  15 {
  16   return __builtin_parityll(c&4);
  17 }
  18
  19 int test_shift(unsigned int d)
  20 {
  21   int bits = 8*sizeof(unsigned int)-1;
  22   return __builtin_parity(d<<31);
  23 }
  24
  25 int test_shiftl(unsigned long e)
  26 {
  27   int bits = 8*sizeof(unsigned long)-1;
  28   return __builtin_parityl(e<<bits);
  29 }
  30
  31 int test_shiftll(unsigned long long f)
  32 {
  33   int bits = 8*sizeof(unsigned long long)-1;
  34   return __builtin_parityll(f<<bits);
  35 }
  36
  37 /* { dg-final { scan-tree-dump-times "parity" 0 "optimized" } } */
  38