libgomp/testsuite/libgomp.hsa.c/bits-insns.c

   1 #include <math.h>
   2
   3 #define N 12
   4
   5 int main()
   6 {
   7   unsigned int arguments[N] = {0u, 1u, 2u, 3u, 111u, 333u, 444u, 0x80000000u, 0x0000ffffu, 0xf0000000u, 0xff000000u, 0xffffffffu};
   8   int clrsb[N] = {};
   9   int clz[N] = {};
  10   int ctz[N] = {};
  11   int ffs[N] = {};
  12   int parity[N] = {};
  13   int popcount[N] = {};
  14
  15   int ref_clrsb[N] = {};
  16   int ref_clz[N] = {};
  17   int ref_ctz[N] = {};
  18   int ref_ffs[N] = {};
  19   int ref_parity[N] = {};
  20   int ref_popcount[N] = {};
  21
  22   for (unsigned i = 0; i < N; i++)
  23     {
  24       ref_clrsb[i] = __builtin_clrsb (arguments[i]);
  25       ref_clz[i] = __builtin_clz (arguments[i]);
  26       ref_ctz[i] = __builtin_ctz (arguments[i]);
  27       ref_ffs[i] = __builtin_ffs (arguments[i]);
  28       ref_parity[i] = __builtin_parity (arguments[i]);
  29       ref_popcount[i] = __builtin_popcount (arguments[i]);
  30     }
  31
  32   #pragma omp target map(from:clz, ctz, ffs, parity, popcount)
  33   {
  34     for (unsigned i = 0; i < N; i++)
  35     {
  36       clrsb[i] = __builtin_clrsb (arguments[i]);
  37       clz[i] = __builtin_clz (arguments[i]);
  38       ctz[i] = __builtin_ctz (arguments[i]);
  39       ffs[i] = __builtin_ffs (arguments[i]);
  40       parity[i] = __builtin_parity (arguments[i]);
  41       popcount[i] = __builtin_popcount (arguments[i]);
  42     }
  43   }
  44
  45   for (unsigned i = 0; i < N; i++)
  46     if (ref_clrsb[i] != clrsb[i])
  47       __builtin_abort ();
  48
  49   /* CLZ of zero is undefined for zero.  */
  50   for (unsigned i = 1; i < N; i++)
  51     if (ref_clz[i] != clz[i])
  52       __builtin_abort ();
  53
  54   /* Likewise for ctz */
  55   for (unsigned i = 1; i < N; i++)
  56     if (ref_ctz[i] != ctz[i])
  57       __builtin_abort ();
  58
  59   for (unsigned i = 0; i < N; i++)
  60     if (ref_ffs[i] != ffs[i])
  61       __builtin_abort ();
  62
  63   for (unsigned i = 0; i < N; i++)
  64     if (ref_parity[i] != parity[i])
  65       __builtin_abort ();
  66
  67   for (unsigned i = 0; i < N; i++)
  68     if (ref_popcount[i] != popcount[i])
  69       __builtin_abort ();
  70
  71   return 0;
  72 }
  73