gcc/testsuite/gcc.target/i386/isa-check.h

   1 #include "cpuid.h"
   2
   3 extern void exit (int) __attribute__((noreturn));
   4
   5 /* Determine what instruction set we've been compiled for,
   6    and detect that we're running with it.  */
   7 static void __attribute__((constructor))
   8 check_isa (void)
   9 {
  10   int a, b, c, d;
  11   int c1, d1, c1e, d1e;
  12
  13   c1 = d1 = c1e = d1e = 0;
  14
  15 #ifdef __MMX__
  16   d1 |= bit_MMX;
  17 #endif
  18 #ifdef __3dNOW__
  19   d1e |= bit_3DNOW;
  20 #endif
  21 #ifdef __3dNOW_A__
  22   d1e |= bit_3DNOWP;
  23 #endif
  24 #ifdef __SSE__
  25   d1 |= bit_SSE;
  26 #endif
  27 #ifdef __SSE2__
  28   d1 |= bit_SSE2;
  29 #endif
  30 #ifdef __SSE3__
  31   c1 |= bit_SSE3;
  32 #endif
  33 #ifdef __SSSE3__
  34   c1 |= bit_SSSE3;
  35 #endif
  36 #ifdef __SSE4_1__
  37   c1 |= bit_SSE4_1;
  38 #endif
  39 #ifdef __SSE4_2__
  40   c1 |= bit_SSE4_2;
  41 #endif
  42 #ifdef __AES__
  43   c1 |= bit_AES;
  44 #endif
  45 #ifdef __PCLMUL__
  46   c1 |= bit_PCLMUL;
  47 #endif
  48 #ifdef __AVX__
  49   c1 |= bit_AVX;
  50 #endif
  51 #ifdef __FMA__
  52   c1 |= bit_FMA;
  53 #endif
  54 #ifdef __SSE4A__
  55   c1e |= bit_SSE4a;
  56 #endif
  57 #ifdef __FMA4__
  58   c1e |= bit_FMA4;
  59 #endif
  60 #ifdef __XOP__
  61   c1e |= bit_XOP;
  62 #endif
  63 #ifdef __LWP__
  64   c1e |= bit_LWP;
  65 #endif
  66
  67   if (c1 | d1)
  68     {
  69       if (!__get_cpuid (1, &a, &b, &c, &d))
  70         goto fail;
  71       if ((c & c1) != c1 || (d & d1) != d1)
  72         goto fail;
  73     }
  74   if (c1e | d1e)
  75     {
  76       if (!__get_cpuid (0x80000001, &a, &b, &c, &d))
  77         goto fail;
  78       if ((c & c1e) != c1e || (d & d1e) != d1e)
  79         goto fail;
  80     }
  81   return;
  82
  83  fail:
  84   exit (0);
  85 }