gcc/testsuite/gcc.target/i386/ssse3-phaddw.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 /* Test the 64-bit form */
  20 static void
  21 ssse3_test_phaddw (int *i1, int *i2, int *r)
  22 {
  23   __m64 t1 = *(__m64 *) i1;
  24   __m64 t2 = *(__m64 *) i2;
  25   *(__m64 *) r = _mm_hadd_pi16 (t1, t2);
  26   _mm_empty ();
  27 }
  28
  29 /* Test the 128-bit form */
  30 static void
  31 ssse3_test_phaddw128 (int *i1, int *i2, int *r)
  32 {
  33   /* Assumes incoming pointers are 16-byte aligned */
  34   __m128i t1 = *(__m128i *) i1;
  35   __m128i t2 = *(__m128i *) i2;
  36   *(__m128i *) r = _mm_hadd_epi16 (t1, t2);
  37 }
  38
  39 /* Routine to manually compute the results */
  40 static void
  41 compute_correct_result(int *i1, int *i2, int *r)
  42 {
  43   short *s1 = (short *) i1;
  44   short *s2 = (short *) i2;
  45   short *sout = (short *) r;
  46   int i;
  47
  48   for (i = 0; i < 4; i++)
  49     sout[i] = s1[2 * i] + s1[2 * i + 1];
  50
  51   for (i = 0; i < 4; i++)
  52     sout[i + 4] = s2[2 * i] + s2[2 * i + 1];
  53 }
  54
  55 static void
  56 TEST (void)
  57 {
  58   int i;
  59   int r [4] __attribute__ ((aligned(16)));
  60   int ck [4];
  61   int fail = 0;
  62
  63   for (i = 0; i < 256; i += 8)
  64     {
  65       /* Manually compute the result */
  66       compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
  67
  68       /* Run the 64-bit tests */
  69       ssse3_test_phaddw (&vals[i + 0], &vals[i + 2], &r[0]);
  70       ssse3_test_phaddw (&vals[i + 4], &vals[i + 6], &r[2]);
  71       fail += chk_128 (ck, r);
  72
  73       /* Run the 128-bit tests */
  74       ssse3_test_phaddw128 (&vals[i + 0], &vals[i + 4], r);
  75       fail += chk_128 (ck, r);
  76     }
  77
  78   if (fail != 0)
  79     abort ();
  80 }