gcc/testsuite/gcc.target/i386/ssse3-psignd.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target ssse3 } */
   3 /* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */
   4
   5 #include "ssse3-check.h"
   6 #include "ssse3-vals.h"
   7
   8 #include <tmmintrin.h>
   9
  10 /* Test the 64-bit form */
  11 static void
  12 ssse3_test_psignd (int *i1, int *i2, int *r)
  13 {
  14   __m64 t1 = *(__m64 *) i1;
  15   __m64 t2 = *(__m64 *) i2;
  16   *(__m64 *) r = _mm_sign_pi32 (t1, t2);
  17   _mm_empty ();
  18 }
  19
  20 /* Test the 128-bit form */
  21 static void
  22 ssse3_test_psignd128 (int *i1, int *i2, int *r)
  23 {
  24   /* Assumes incoming pointers are 16-byte aligned */
  25   __m128i t1 = *(__m128i *) i1;
  26   __m128i t2 = *(__m128i *) i2;
  27   *(__m128i *)r = _mm_sign_epi32 (t1, t2);
  28 }
  29
  30 /* Routine to manually compute the results */
  31 static void
  32 compute_correct_result (int *i1, int *i2, int *r)
  33 {
  34   int i;
  35
  36   for (i = 0; i < 4; i++)
  37     if (i2[i] < 0)
  38       r[i] = -i1[i];
  39     else if (i2[i] == 0)
  40       r[i] = 0;
  41     else
  42       r[i] = i1[i];
  43 }
  44
  45 static void
  46 ssse3_test (void)
  47 {
  48   int i;
  49   int r [4] __attribute__ ((aligned(16)));
  50   int ck [4];
  51   int fail = 0;
  52
  53   for (i = 0; i < 256; i += 8)
  54     {
  55       /* Manually compute the result */
  56       compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
  57
  58       /* Run the 64-bit tests */
  59       ssse3_test_psignd (&vals[i + 0], &vals[i + 4], &r[0]);
  60       ssse3_test_psignd (&vals[i + 2], &vals[i + 6], &r[2]);
  61       fail += chk_128 (ck, r);
  62
  63       /* Run the 128-bit tests */
  64       ssse3_test_psignd128 (&vals[i + 0], &vals[i + 4], r);
  65       fail += chk_128 (ck, r);
  66     }
  67
  68   if (fail != 0)
  69     abort ();
  70 }