gcc/testsuite/gcc.target/i386/sse2-psadbw-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -msse2" } */
   3 /* { dg-require-effective-target sse2 } */
   4
   5 #ifndef CHECK_H
   6 #define CHECK_H "sse2-check.h"
   7 #endif
   8
   9 #ifndef TEST
  10 #define TEST sse2_test
  11 #endif
  12
  13 #include CHECK_H
  14
  15 #include <emmintrin.h>
  16
  17 static __m128i
  18 __attribute__((noinline, unused))
  19 test (__m128i s1, __m128i s2)
  20 {
  21   return _mm_sad_epu8 (s1, s2);
  22 }
  23
  24 static void
  25 TEST (void)
  26 {
  27   union128i_ub s1, s2;
  28   union128i_w u;
  29   short e[8] = {0};
  30   unsigned char tmp[16];
  31   int i;
  32
  33   s1.x = _mm_set_epi8 (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16);
  34   s2.x = _mm_set_epi8 (16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1);
  35   u.x = test (s1.x, s2.x);
  36
  37   for (i = 0; i < 16; i++)
  38     tmp [i] = __builtin_abs (s1.a[i] - s2.a[i]);
  39
  40   for (i = 0; i < 8; i++)
  41     e[0] += tmp[i];
  42
  43   for (i = 8; i < 16; i++)
  44     e[4] += tmp[i];
  45
  46
  47   if (check_union128i_w (u, e))
  48     abort ();
  49 }