gcc/testsuite/gcc.target/i386/avx2-vpblendvb-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-mavx2 -O2" } */
   3 /* { dg-require-effective-target avx2 } */
   4
   5 #include "avx2-check.h"
   6 #include <string.h>
   7
   8 #define NUM 20
   9
  10 static void
  11 init_pblendb (char *src1, char *src2, char *mask, int seed)
  12 {
  13   int i, sign = 1;
  14
  15   for (i = 0; i < 32; i++)
  16     {
  17       src1[i] = (i + seed) * (i + seed) * sign;
  18       src2[i] = (i + seed + 20) * sign;
  19       sign = -sign;
  20
  21       if (sign > 0)
  22         mask[i] = 1 << 7;
  23       else
  24         mask[i] = 0;
  25     }
  26 }
  27
  28 static void
  29 calc_pblendb (char *src1, char *src2, char *mask, char *dst)
  30 {
  31   int i;
  32
  33   memcpy (dst, src1, 32);
  34   for (i = 0; i < 32; i++)
  35     if (mask[i] & (1 << 7))
  36       dst[i] = src2[i];
  37 }
  38
  39 static void
  40 avx2_test (void)
  41 {
  42   union256i_b src1, src2, mask, dst;
  43   char dst_ref[32];
  44   int i;
  45
  46   for (i = 0; i < NUM; i++)
  47     {
  48       init_pblendb (src1.a, src2.a, mask.a, i);
  49
  50       dst.x = _mm256_blendv_epi8 (src1.x, src2.x, mask.x);
  51       calc_pblendb (src1.a, src2.a, mask.a, dst_ref);
  52
  53       if (check_union256i_b (dst, dst_ref))
  54         abort ();
  55     }
  56 }