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 #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_pabsw (int *i1, int *r)
  13 {
  14   __m64 t1 = *(__m64 *) i1;
  15   *(__m64 *) r = _mm_abs_pi16 (t1);
  16   _mm_empty ();
  17 }
  18
  19 /* Test the 128-bit form */
  20 static void
  21 ssse3_test_pabsw128 (int *i1, int *r)
  22 {
  23   /* Assumes incoming pointers are 16-byte aligned */
  24   __m128i t1 = *(__m128i *) i1;
  25   *(__m128i *) r = _mm_abs_epi16 (t1);
  26 }
  27
  28 /* Routine to manually compute the results */
  29 static void
  30 compute_correct_result (int *i1, int *r)
  31 {
  32   short *s1 = (short *) i1;
  33   short *sout = (short *) r;
  34   int i;
  35
  36   for (i = 0; i < 8; i++)
  37     if (s1[i] < 0)
  38       sout[i] = -s1[i];
  39     else
  40       sout[i] = s1[i];
  41 }
  42
  43 static void
  44 ssse3_test (void)
  45 {
  46   int i;
  47   int r [4] __attribute__ ((aligned(16)));
  48   int ck [4];
  49   int fail = 0;
  50
  51   for (i = 0; i < 256; i += 4)
  52     {
  53       /* Manually compute the result */
  54       compute_correct_result (&vals[i + 0], ck);
  55
  56       /* Run the 64-bit tests */
  57       ssse3_test_pabsw (&vals[i + 0], &r[0]);
  58       ssse3_test_pabsw (&vals[i + 2], &r[2]);
  59       fail += chk_128 (ck, r);
  60
  61       /* Run the 128-bit tests */
  62       ssse3_test_pabsw128 (&vals[i + 0], r);
  63       fail += chk_128 (ck, r);
  64     }
  65
  66   if (fail != 0)
  67     abort ();
  68 }