gcc/testsuite/gcc.target/i386/mmx-3dnow-check.h

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include "cpuid.h"
   5
   6 static void mmx_3dnow_test (void);
   7
   8 static void
   9 __attribute__ ((noinline))
  10 do_test (void)
  11 {
  12   mmx_3dnow_test ();
  13 }
  14
  15 int
  16 main ()
  17 {
  18   unsigned int eax, ebx, ecx, edx;
  19
  20   if (!__get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx))
  21     return 0;
  22
  23   /* Run 3DNow! test only if host has 3DNow! support.  */
  24   if (edx & bit_3DNOW)
  25     do_test ();
  26
  27   return 0;
  28 }