gcc/testsuite/gcc.target/i386/avx512bw-vpsubusb-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -mavx512bw" } */
   3 /* { dg-require-effective-target avx512bw } */
   4
   5 #define AVX512BW
   6 #include "avx512f-helper.h"
   7
   8 #define SIZE (AVX512F_LEN / 8)
   9 #include "avx512f-mask-type.h"
  10
  11 void
  12 CALC (unsigned char *r, unsigned char *s1, unsigned char *s2)
  13 {
  14   int i;
  15   for (i = 0; i < SIZE; i++)
  16     {
  17       int tmp = (int)s1[i] - (int)s2[i];
  18       if (tmp > 0xFF) tmp = 0xFF;
  19       if (tmp < 0) tmp = 0;
  20       r[i] = (unsigned char)tmp;
  21     }
  22 }
  23
  24 void
  25 TEST (void)
  26 {
  27   int i;
  28   UNION_TYPE (AVX512F_LEN, i_b) res1, res2, res3, src1, src2;
  29   MASK_TYPE mask = MASK_VALUE;
  30   unsigned char res_ref[SIZE];
  31
  32   for (i = 0; i < SIZE; i++)
  33     {
  34       src1.a[i] = 2 + 7 * i % 291;
  35       src2.a[i] = 3 + 11 * (i % 377) * i;
  36     }
  37   for (i = 0; i < SIZE; i++)
  38     res2.a[i] = DEFAULT_VALUE;
  39
  40   res1.x = INTRINSIC (_subs_epu8) (src1.x, src2.x);
  41   res2.x = INTRINSIC (_mask_subs_epu8) (res2.x, mask, src1.x, src2.x);
  42   res3.x = INTRINSIC (_maskz_subs_epu8) (mask, src1.x, src2.x);
  43
  44   CALC (res_ref, src1.a, src2.a);
  45
  46   if (UNION_CHECK (AVX512F_LEN, i_b) (res1, res_ref))
  47     abort ();
  48
  49   MASK_MERGE (i_b) (res_ref, mask, SIZE);
  50   if (UNION_CHECK (AVX512F_LEN, i_b) (res2, res_ref))
  51     abort ();
  52
  53   MASK_ZERO (i_b) (res_ref, mask, SIZE);
  54   if (UNION_CHECK (AVX512F_LEN, i_b) (res3, res_ref))
  55     abort ();
  56 }