gcc/testsuite/gcc.target/i386/sse4_2-popcnt.h

   1 #include "sse4_2-check.h"
   2
   3 #include <nmmintrin.h>
   4
   5 #define NUM 1024
   6
   7 static int
   8 compute_popcnt (TYPE v)
   9 {
  10   int ret;
  11   int i;
  12
  13  ret = 0;
  14  for (i = 0; i < sizeof(v) * 8; i++)
  15    if ((v & ((TYPE)1 << (TYPE) i)))
  16      ret++;
  17
  18  return ret;
  19 }
  20
  21 static void
  22 sse4_2_test (void)
  23 {
  24   int i;
  25   TYPE vals[NUM];
  26   TYPE res;
  27
  28  for (i = 0; i < NUM; i++)
  29    {
  30      vals[i] = rand ();
  31      if (sizeof (TYPE) > 4)
  32        vals[i] |= (TYPE)rand() << (TYPE)(sizeof (TYPE) * 4);
  33    }
  34
  35  for (i=0; i < NUM; i++)
  36    {
  37      res = POPCNT (vals[i]);
  38      if (res != compute_popcnt (vals[i]))
  39        abort ();
  40    }
  41 }