gcc/testsuite/gcc.target/i386/ssse3-pabsb.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
  15 #include "ssse3-vals.h"
  16 #include <tmmintrin.h>
  17
  18 #ifndef __AVX__
  19 /* Test the 64-bit form */
  20 static void
  21 ssse3_test_pabsb (int *i1, int *r)
  22 {
  23   __m64 t1 = *(__m64 *) i1;
  24   *(__m64 *) r = _mm_abs_pi8 (t1);
  25   _mm_empty ();
  26 }
  27 #endif
  28
  29 /* Test the 128-bit form */
  30 static void
  31 ssse3_test_pabsb128 (int *i1, int *r)
  32 {
  33   /* Assumes incoming pointers are 16-byte aligned */
  34   __m128i t1 = *(__m128i *) i1;
  35   *(__m128i *) r = _mm_abs_epi8 (t1);
  36 }
  37
  38 /* Routine to manually compute the results */
  39 static void
  40 compute_correct_result (int *i1, int *r)
  41 {
  42   char *b1 = (char *) i1;
  43   char *bout = (char *) r;
  44   int i;
  45
  46   for (i = 0; i < 16; i++)
  47     if (b1[i] < 0)
  48       bout[i] = -b1[i];
  49     else
  50       bout[i] = b1[i];
  51 }
  52
  53 static void
  54 TEST (void)
  55 {
  56   int i;
  57   int r [4] __attribute__ ((aligned(16)));
  58   int ck [4];
  59   int fail = 0;
  60
  61   for (i = 0; i < 256; i += 4)
  62     {
  63       /* Manually compute the result */
  64       compute_correct_result(&vals[i + 0], ck);
  65
  66 #ifndef __AVX__
  67       /* Run the 64-bit tests */
  68       ssse3_test_pabsb (&vals[i + 0], &r[0]);
  69       ssse3_test_pabsb (&vals[i + 2], &r[2]);
  70       fail += chk_128 (ck, r);
  71 #endif
  72
  73       /* Run the 128-bit tests */
  74       ssse3_test_pabsb128 (&vals[i + 0], r);
  75       fail += chk_128 (ck, r);
  76     }
  77
  78   if (fail != 0)
  79     abort ();
  80 }