URL
https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk
Subversion Repositories openrisc_me
[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [vect/] [tree-vect.h] - Rev 298
Compare with Previous | Blame | View Log
/* Check if system supports SIMD */ #include <signal.h> #if defined(__i386__) || defined(__x86_64__) # include "cpuid.h" #endif extern void abort (void); extern void exit (int); static void sig_ill_handler (int sig) { exit(0); } static void __attribute__((noinline)) check_vect (void) { signal(SIGILL, sig_ill_handler); #if defined(__PAIRED__) /* 750CL paired-single instruction, 'ps_mul %v0,%v0,%v0'. */ asm volatile (".long 0x10000032"); #elif defined(__ppc__) || defined(__ppc64__) || defined(__powerpc__) || defined(powerpc) /* Altivec instruction, 'vor %v0,%v0,%v0'. */ asm volatile (".long 0x10000484"); #elif defined(__i386__) || defined(__x86_64__) { int a, b, c, d, want_level, want_c, want_d; /* Determine what instruction set we've been compiled for, and detect that we're running with it. This allows us to at least do a compile check for, e.g. SSE4.1 when the machine only supports SSE2. */ # ifdef __XOP__ want_level = 0x80000001, want_c = bit_XOP, want_d = 0; # elif defined(__AVX__) want_level = 1, want_c = bit_AVX, want_d = 0; # elif defined(__SSE4_1__) want_level = 1, want_c = bit_SSE4_1, want_d = 0; # elif defined(__SSSE3__) want_level = 1, want_c = bit_SSSE3, want_d = 0; # else want_level = 1, want_c = 0, want_d = bit_SSE2; # if defined(__sun__) && defined(__svr4__) /* Before Solaris 9 4/04, trying to execute an SSE2 instruction gives SIGILL even if the CPU can handle them. */ asm volatile ("unpcklpd %xmm0,%xmm2"); # endif # endif if (!__get_cpuid (want_level, &a, &b, &c, &d) || ((c & want_c) | (d & want_d)) == 0) exit (0); } #elif defined(__sparc__) asm volatile (".word\t0x81b007c0"); #elif defined(__arm__) { /* On some processors without NEON support, this instruction may be a no-op, on others it may trap, so check that it executes correctly. */ long long a = 0, b = 1; asm ("vorr %P0, %P1, %P2" : "=w" (a) : "0" (a), "w" (b)); if (a != 1) exit (0); } #endif signal (SIGILL, SIG_DFL); }