gcc/testsuite/gcc.target/i386/sse3-hsubps.c

   1 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   2 /* { dg-options "-O2 -msse3" } */
   3 #include <pmmintrin.h>
   4 #include <stdlib.h>
   5 #include "../../gcc.dg/i386-cpuid.h"
   6
   7 static void sse3_test (void);
   8
   9 int
  10 main ()
  11 {
  12   unsigned long cpu_facilities;
  13
  14   cpu_facilities = i386_cpuid_ecx ();
  15
  16   /* Run SSE3 test only if host has SSE3 support.  */
  17   if ((cpu_facilities & bit_SSE3))
  18     sse3_test ();
  19
  20   exit (0);
  21 }
  22
  23 static void
  24 sse3_test_hsubps (float *i1, float *i2, float *r)
  25 {
  26   __m128 t1 = _mm_loadu_ps (i1);
  27   __m128 t2 = _mm_loadu_ps (i2);
  28
  29   t1 = _mm_hsub_ps (t1, t2);
  30
  31   _mm_storeu_ps (r, t1);
  32 }
  33
  34 static void
  35 sse3_test_hsubps_subsume (float *i1, float *i2, float *r)
  36 {
  37   __m128 t1 = _mm_load_ps (i1);
  38   __m128 t2 = _mm_load_ps (i2);
  39
  40   t1 = _mm_hsub_ps (t1, t2);
  41
  42   _mm_storeu_ps (r, t1);
  43 }
  44
  45 static int
  46 chk_ps (float *v1, float *v2)
  47 {
  48   int i;
  49   int n_fails = 0;
  50
  51   for (i = 0; i < 4; i++) {
  52     if (v1[i] != v2[i]) {
  53       n_fails += 1;
  54     }
  55   }
  56
  57   return n_fails;
  58 }
  59
  60 static float p1[4] __attribute__ ((aligned(16)));
  61 static float p2[4] __attribute__ ((aligned(16)));
  62 static float p3[4];
  63 static float ck[4];
  64
  65 static float vals[80] =
  66   {
  67     100.0,  200.0, 300.0, 400.0, 5.0, -1.0, .345, -21.5,
  68     1100.0, 0.235, 321.3, 53.40, 0.3, 10.0, 42.0, 32.52,
  69     32.6,   123.3, 1.234, 2.156, 0.1, 3.25, 4.75, 32.44,
  70     12.16,  52.34, 64.12, 71.13, -.1, 2.30, 5.12, 3.785,
  71     541.3,  321.4, 231.4, 531.4, 71., 321., 231., -531.,
  72     23.45,  23.45, 23.45, 23.45, 23.45, 23.45, 23.45, 23.45,
  73     23.45,  -1.43, -6.74, 6.345, -20.1, -20.1, -40.1, -40.1,
  74     1.234,  2.345, 3.456, 4.567, 5.678, 6.789, 7.891, 8.912,
  75     -9.32,  -8.41, -7.50, -6.59, -5.68, -4.77, -3.86, -2.95,
  76     9.32,  8.41, 7.50, 6.59, -5.68, -4.77, -3.86, -2.95
  77   };
  78
  79 static void
  80 sse3_test (void)
  81 {
  82   int i;
  83   int fail = 0;
  84
  85   for (i = 0; i < 80; i += 8)
  86     {
  87       p1[0] = vals[i+0];
  88       p1[1] = vals[i+1];
  89       p1[2] = vals[i+2];
  90       p1[3] = vals[i+3];
  91
  92       p2[0] = vals[i+4];
  93       p2[1] = vals[i+5];
  94       p2[2] = vals[i+6];
  95       p2[3] = vals[i+7];
  96
  97       ck[0] = p1[0] - p1[1];
  98       ck[1] = p1[2] - p1[3];
  99       ck[2] = p2[0] - p2[1];
 100       ck[3] = p2[2] - p2[3];
 101
 102       sse3_test_hsubps (p1, p2, p3);
 103
 104       fail += chk_ps (ck, p3);
 105
 106       sse3_test_hsubps_subsume (p1, p2, p3);
 107
 108       fail += chk_ps (ck, p3);
 109     }
 110
 111   if (fail != 0)
 112     abort ();
 113 }