gcc/testsuite/gcc.dg/vect/tree-vect.h

   1 /* Check if system supports SIMD */
   2 #include <signal.h>
   3
   4 extern void abort (void);
   5 extern void exit (int);
   6
   7 void
   8 sig_ill_handler (int sig)
   9 {
  10   exit(0);
  11 }
  12
  13 void check_vect (void)
  14 {
  15   signal(SIGILL, sig_ill_handler);
  16 #if defined(__ppc__) || defined(__ppc64__) || defined(__powerpc__) || defined(powerpc)
  17   /* Altivec instruction, 'vor %v0,%v0,%v0'.  */
  18   asm volatile (".long 0x10000484");
  19 #elif defined(__i386__) || defined(__x86_64__)
  20   /* SSE2 instruction: movsd %xmm0,%xmm0 */
  21   asm volatile (".byte 0xf2,0x0f,0x10,0xc0");
  22 #elif defined(__sparc__)
  23   asm volatile (".word\t0x81b007c0");
  24 #elif defined(__arm__)
  25   {
  26     /* On some processors without NEON support, this instruction may
  27        be a no-op, on others it may trap, so check that it executes
  28        correctly.  */
  29     long long a = 0, b = 1;
  30     asm ("vorr %P0, %P1, %P2"
  31          : "=w" (a)
  32          : "0" (a), "w" (b));
  33     if (a != 1)
  34       exit (0);
  35   }
  36 #endif
  37   signal (SIGILL, SIG_DFL);
  38 }