gcc/testsuite/gcc.target/i386/sse4_1-pblendvb.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target sse4 } */
   3 /* { dg-options "-O2 -msse4.1" } */
   4
   5 #ifndef CHECK_H
   6 #define CHECK_H "sse4_1-check.h"
   7 #endif
   8
   9 #ifndef TEST
  10 #define TEST sse4_1_test
  11 #endif
  12
  13 #include CHECK_H
  14
  15 #include <smmintrin.h>
  16 #include <string.h>
  17
  18 #define NUM 20
  19
  20 static void
  21 init_pblendvb (unsigned char *src1, unsigned char *src2,
  22                unsigned char *mask)
  23 {
  24   int i, sign = 1;
  25
  26   for (i = 0; i < NUM * 16; i++)
  27     {
  28       src1[i] = i* i * sign;
  29       src2[i] = (i + 20) * sign;
  30       mask[i] = (i % 3) + ((i * (14 + sign))
  31                            ^ (src1[i] | src2[i] | (i*3)));
  32       sign = -sign;
  33     }
  34 }
  35
  36 static int
  37 check_pblendvb (__m128i *dst, unsigned char *src1,
  38                 unsigned char *src2, unsigned char *mask)
  39 {
  40   unsigned char tmp[16];
  41   int j;
  42
  43   memcpy (&tmp[0], src1, sizeof (tmp));
  44   for (j = 0; j < 16; j++)
  45     if (mask [j] & 0x80)
  46       tmp[j] = src2[j];
  47
  48   return memcmp (dst, &tmp[0], sizeof (tmp));
  49 }
  50
  51 static void
  52 TEST (void)
  53 {
  54   union
  55     {
  56       __m128i x[NUM];
  57       unsigned char c[NUM * 16];
  58     } dst, src1, src2, mask;
  59   int i;
  60
  61   init_pblendvb (src1.c, src2.c, mask.c);
  62
  63   for (i = 0; i < NUM; i++)
  64     {
  65       dst.x[i] = _mm_blendv_epi8 (src1.x[i], src2.x[i], mask.x[i]);
  66       if (check_pblendvb (&dst.x[i], &src1.c[i * 16], &src2.c[i * 16],
  67                           &mask.c[i * 16]))
  68         abort ();
  69     }
  70 }