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

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target ssse3 } */
   3 /* { dg-options "-O2 -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_psignw (int *i1, int *i2, int *r)
  13 {
  14   __m64 t1 = *(__m64 *) i1;
  15   __m64 t2 = *(__m64 *) i2;
  16   *(__m64 *) r = _mm_sign_pi16 (t1, t2);
  17   _mm_empty ();
  18 }
  19
  20 /* Test the 128-bit form */
  21 static void
  22 ssse3_test_psignw128 (int *i1, int *i2, int *r)
  23 {
  24   /* Assumes incoming pointers are 16-byte aligned */
  25   __m128i t1 = *(__m128i *) i1;
  26   __m128i t2 = *(__m128i *) i2;
  27  *(__m128i *) r = _mm_sign_epi16 (t1, t2);
  28 }
  29
  30 /* Routine to manually compute the results */
  31 static void
  32 compute_correct_result (int *i1, int *i2, int *r)
  33 {
  34   short *s1 = (short *) i1;
  35   short *s2 = (short *) i2;
  36   short *sout = (short *) r;
  37   int i;
  38
  39   for (i = 0; i < 8; i++)
  40     if (s2[i] < 0)
  41       sout[i] = -s1[i];
  42     else if (s2[i] == 0)
  43       sout[i] = 0;
  44     else
  45       sout[i] = s1[i];
  46 }
  47
  48 static void
  49 ssse3_test (void)
  50 {
  51   int i;
  52   int r [4] __attribute__ ((aligned(16)));
  53   int ck [4];
  54   int fail = 0;
  55
  56   for (i = 0; i < 256; i += 8)
  57     {
  58       /* Manually compute the result */
  59       compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
  60
  61       /* Run the 64-bit tests */
  62       ssse3_test_psignw (&vals[i + 0], &vals[i + 4], &r[0]);
  63       ssse3_test_psignw (&vals[i + 2], &vals[i + 6], &r[2]);
  64       fail += chk_128 (ck, r);
  65
  66       /* Run the 128-bit tests */
  67       ssse3_test_psignw128 (&vals[i + 0], &vals[i + 4], r);
  68       fail += chk_128 (ck, r);
  69     }
  70
  71   if (fail != 0)
  72     abort ();
  73 }