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