gcc/testsuite/gcc.target/powerpc/ssse3-phaddsw.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -mpower8-vector -Wno-psabi" } */
   3 /* { dg-require-effective-target p8vector_hw } */
   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_phaddsw (__m64 *i1, __m64 *i2, __m64 *r)
  23 {
  24   *r = _mm_hadds_pi16 (*i1, *i2);
  25   _mm_empty ();
  26 }
  27 #endif
  28
  29 /* Test the 128-bit form */
  30 static void
  31 ssse3_test_phaddsw128 (__m128i *i1, __m128i *i2, __m128i *r)
  32 {
  33   /* Assumes incoming pointers are 16-byte aligned */
  34  *(__m128i *) r = _mm_hadds_epi16 (*i1, *i2);
  35 }
  36
  37 static short
  38 signed_saturate_to_word (int x)
  39 {
  40   if (x > (int) 0x7fff)
  41     return 0x7fff;
  42
  43   if (x < (int) 0xffff8000)
  44     return 0x8000;
  45
  46   return (short) x;
  47 }
  48
  49 /* Routine to manually compute the results */
  50 static void
  51 compute_correct_result (short *i1, short *i2, short *r)
  52 {
  53   int i;
  54
  55   for (i = 0; i < 4; i++)
  56     r[i + 0] = signed_saturate_to_word(i1[2 * i] + i1[2 * i + 1]);
  57   for (i = 0; i < 4; i++)
  58     r[i + 4] = signed_saturate_to_word(i2[2 * i] + i2[2 * i + 1]);
  59 }
  60
  61 static void
  62 TEST (void)
  63 {
  64   int i;
  65   union data r __attribute__ ((aligned(16)));
  66   union data ck;
  67   int fail = 0;
  68
  69   for (i = 0; i < ARRAY_SIZE (vals) - 1; i++)
  70     {
  71       /* Manually compute the result */
  72       compute_correct_result (&vals[i + 0].h[0], &vals[i + 1].h[0], &ck.h[0]);
  73
  74 #ifndef __AVX__
  75       /* Run the 64-bit tests */
  76       ssse3_test_phaddsw (&vals[i + 0].ll[0], &vals[i + 0].ll[1], &r.ll[0]);
  77       ssse3_test_phaddsw (&vals[i + 1].ll[0], &vals[i + 1].ll[1], &r.ll[1]);
  78       fail += chk_128 (ck.m[0], r.m[0]);
  79 #endif
  80
  81       /* Run the 128-bit tests */
  82       ssse3_test_phaddsw128 (&vals[i + 0].m[0], &vals[i + 1].m[0], &r.m[0]);
  83       fail += chk_128 (ck.m[0], r.m[0]);
  84     }
  85
  86   if (fail != 0)
  87     abort ();
  88 }