gcc/testsuite/gcc.target/i386/ssse3-pabsw.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
  17 #include <tmmintrin.h>
  18
  19 #ifndef __AVX__
  20 /* Test the 64-bit form */
  21 static void
  22 ssse3_test_pabsw (int *i1, int *r)
  23 {
  24   __m64 t1 = *(__m64 *) i1;
  25   *(__m64 *) r = _mm_abs_pi16 (t1);
  26   _mm_empty ();
  27 }
  28 #endif
  29
  30 /* Test the 128-bit form */
  31 static void
  32 ssse3_test_pabsw128 (int *i1, int *r)
  33 {
  34   /* Assumes incoming pointers are 16-byte aligned */
  35   __m128i t1 = *(__m128i *) i1;
  36   *(__m128i *) r = _mm_abs_epi16 (t1);
  37 }
  38
  39 /* Routine to manually compute the results */
  40 static void
  41 compute_correct_result (int *i1, int *r)
  42 {
  43   short *s1 = (short *) i1;
  44   short *sout = (short *) r;
  45   int i;
  46
  47   for (i = 0; i < 8; i++)
  48     if (s1[i] < 0)
  49       sout[i] = -s1[i];
  50     else
  51       sout[i] = s1[i];
  52 }
  53
  54 static void
  55 TEST (void)
  56 {
  57   int i;
  58   int r [4] __attribute__ ((aligned(16)));
  59   int ck [4];
  60   int fail = 0;
  61
  62   for (i = 0; i < 256; i += 4)
  63     {
  64       /* Manually compute the result */
  65       compute_correct_result (&vals[i + 0], ck);
  66
  67 #ifndef __AVX__
  68       /* Run the 64-bit tests */
  69       ssse3_test_pabsw (&vals[i + 0], &r[0]);
  70       ssse3_test_pabsw (&vals[i + 2], &r[2]);
  71       fail += chk_128 (ck, r);
  72 #endif
  73
  74       /* Run the 128-bit tests */
  75       ssse3_test_pabsw128 (&vals[i + 0], r);
  76       fail += chk_128 (ck, r);
  77     }
  78
  79   if (fail != 0)
  80     abort ();
  81 }