gcc/testsuite/gcc.target/i386/sse4_1-pmuldq.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
  17 #define NUM 64
  18
  19 static void
  20 TEST (void)
  21 {
  22   union
  23     {
  24       __m128i x[NUM / 2];
  25       long long ll[NUM];
  26     } dst;
  27   union
  28     {
  29       __m128i x[NUM / 2];
  30       int i[NUM * 2];
  31     } src1, src2;
  32   int i, sign = 1;
  33   long long value;
  34
  35   for (i = 0; i < NUM * 2; i += 2)
  36     {
  37       src1.i[i] = i * i * sign;
  38       src2.i[i] = (i + 20) * sign;
  39       sign = -sign;
  40     }
  41
  42   for (i = 0; i < NUM; i += 2)
  43     dst.x[i / 2] = _mm_mul_epi32 (src1.x[i / 2], src2.x[i / 2]);
  44
  45   for (i = 0; i < NUM; i++)
  46     {
  47       value = (long long) src1.i[i * 2] * (long long) src2.i[i * 2];
  48       if (value != dst.ll[i])
  49         abort ();
  50     }
  51 }