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

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target ssse3 } */
   3 /* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */
   4
   5 #ifndef CHECK_H
   6 #define CHECK_H "ssse3-check.h"
   7 #endif
   8
   9 #ifndef TEST
  10 #define TEST ssse3_test
  11 #endif
  12
  13 #include CHECK_H
  14 #include "ssse3-vals.h"
  15
  16 #include <tmmintrin.h>
  17
  18 #ifndef __AVX__
  19 /* Test the 64-bit form */
  20 static void
  21 ssse3_test_psignb (int *i1, int *i2, int *r)
  22 {
  23   __m64 t1 = *(__m64 *) i1;
  24   __m64 t2 = *(__m64 *) i2;
  25   *(__m64 *) r = _mm_sign_pi8 (t1, t2);
  26   _mm_empty ();
  27 }
  28 #endif
  29
  30 /* Test the 128-bit form */
  31 static void
  32 ssse3_test_psignb128 (int *i1, int *i2, int *r)
  33 {
  34   /* Assumes incoming pointers are 16-byte aligned */
  35   __m128i t1 = *(__m128i *) i1;
  36   __m128i t2 = *(__m128i *) i2;
  37   *(__m128i *) r = _mm_sign_epi8 (t1, t2);
  38 }
  39
  40 /* Routine to manually compute the results */
  41 static void
  42 compute_correct_result (int *i1, int *i2, int *r)
  43 {
  44   char *b1 = (char *) i1;
  45   char *b2 = (char *) i2;
  46   char *bout = (char *) r;
  47   int i;
  48
  49   for (i = 0; i < 16; i++)
  50     if (b2[i] < 0)
  51       bout[i] = -b1[i];
  52     else if (b2[i] == 0)
  53       bout[i] = 0;
  54     else
  55       bout[i] = b1[i];
  56 }
  57
  58 static void
  59 TEST (void)
  60 {
  61   int i;
  62   int r [4] __attribute__ ((aligned(16)));
  63   int ck [4];
  64   int fail = 0;
  65
  66   for (i = 0; i < 256; i += 8)
  67     {
  68       /* Manually compute the result */
  69       compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
  70
  71 #ifndef __AVX__
  72       /* Run the 64-bit tests */
  73       ssse3_test_psignb (&vals[i + 0], &vals[i + 4], &r[0]);
  74       ssse3_test_psignb (&vals[i + 2], &vals[i + 6], &r[2]);
  75       fail += chk_128 (ck, r);
  76 #endif
  77
  78       /* Run the 128-bit tests */
  79       ssse3_test_psignb128 (&vals[i + 0], &vals[i + 4], r);
  80       fail += chk_128 (ck, r);
  81     }
  82
  83   if (fail != 0)
  84     abort ();
  85 }