gcc/testsuite/gcc.target/i386/avx512f-vpclmulqdq-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -mavx512f -mvpclmulqdq" } */
   3 /* { dg-require-effective-target avx512f } */
   4 /* { dg-require-effective-target vpclmulqdq } */
   5
   6 #define AVX512F
   7
   8 #define VPCLMULQDQ
   9 #include "avx512f-helper.h"
  10
  11 #define SIZE (AVX512F_LEN / 64)
  12
  13 #include "avx512f-mask-type.h"
  14
  15 static void
  16 CALC (unsigned long long *r, unsigned long long *s1, unsigned long long *s2, unsigned char imm)
  17 {
  18   for (int len = 0; len < SIZE/2; len++)
  19   {
  20     unsigned long long src1, src2;
  21     src1 = (imm & 1) ? s1[len*2 + 1] : s1[len*2];
  22     src2 = ((imm >> 4) & 1) ? s2[len*2 + 1] : s2[len*2];
  23     for (int i = 0; i < 64; i++)
  24       {
  25         if ((src1 >> i) & 1)
  26           {
  27             if (i)
  28               r[len*2 + 1] ^= src2 >> (64 - i);
  29             r[len*2] ^= src2 << i;
  30           }
  31       }
  32   }
  33 }
  34
  35 void
  36 TEST (void)
  37 {
  38   int i;
  39   UNION_TYPE (AVX512F_LEN, i_q) res, src1, src2;
  40   unsigned long long res_ref[SIZE];
  41   unsigned char imm = 1;
  42
  43   for (i = 0; i < SIZE; i++)
  44     {
  45       src1.a[i] = 0xFFFFFFFFF + i;
  46       src2.a[i] = 0xFFFFFFFFF + i*i;
  47     }
  48
  49   for (i = 0; i < SIZE; i++)
  50     {
  51       res.a[i] = 0;
  52       res_ref[i] = 0;
  53     }
  54
  55   CALC (res_ref, src1.a, src2.a, imm);
  56   res.x = INTRINSIC (_clmulepi64_epi128) (src1.x, src2.x, imm);
  57
  58   if (UNION_CHECK (AVX512F_LEN, i_q) (res, res_ref))
  59     abort ();
  60 }