gcc/testsuite/gcc.dg/i386-sse-11.c

   1 /* PR rtl-optimization/21239 */
   2 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   3 /* { dg-options "-O2 -msse2" } */
   4 #include <emmintrin.h>
   5 #include "i386-cpuid.h"
   6
   7 extern void abort (void);
   8
   9 void
  10 foo (unsigned int x, double *y, const double *z)
  11 {
  12   __m128d tmp;
  13   while (x)
  14     {
  15       tmp = _mm_load_sd (z);
  16       _mm_store_sd (y, tmp);
  17       --x; ++z; ++y;
  18     }
  19 }
  20
  21 void __attribute__((noinline))
  22 run_tests (void)
  23 {
  24   unsigned int i;
  25   double a[16], b[16];
  26   for (i = 0; i < 16; ++i)
  27     {
  28       a[i] = 1;
  29       b[i] = 2;
  30     }
  31   foo (16, a, b);
  32   for (i = 0; i < 16; ++i)
  33     {
  34       if (a[i] != 2)
  35         abort ();
  36     }
  37 }
  38
  39 int
  40 main ()
  41 {
  42   unsigned long cpu_facilities;
  43   unsigned int i;
  44   double a[19], b[19];
  45
  46   cpu_facilities = i386_cpuid ();
  47
  48   if ((cpu_facilities & (bit_MMX | bit_SSE | bit_SSE2 | bit_CMOV))
  49       != (bit_MMX | bit_SSE | bit_SSE2 | bit_CMOV))
  50     /* If host has no vector support, pass.  */
  51     return 0;
  52
  53   run_tests ();
  54   return 0;
  55 }