tests/test-i386-ssse3.c

   1 /* See if various MMX/SSE SSSE3 instructions give expected results */
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <stdint.h>
   5
   6 int main(int argc, char *argv[]) {
   7         char hello[16];
   8         const char ehlo[8] = "EHLO    ";
   9         uint64_t mask = 0x8080800302020001;
  10
  11         uint64_t a = 0x0000000000090007;
  12         uint64_t b = 0x0000000000000000;
  13         uint32_t c;
  14         uint16_t d;
  15
  16         const char e[16] = "LLOaaaaaaaaaaaaa";
  17         const char f[16] = "aaaaaaaaaaaaaaHE";
  18
  19         /* pshufb mm1/xmm1, mm2/xmm2 */
  20         asm volatile ("movq    (%0), %%mm0" : : "r" (ehlo) : "mm0", "mm1");
  21         asm volatile ("movq    %0, %%mm1" : : "m" (mask));
  22         asm volatile ("pshufb  %mm1, %mm0");
  23         asm volatile ("movq    %%mm0, %0" : "=m" (hello));
  24         printf("%s\n", hello);
  25
  26         /* pshufb mm1/xmm1, m64/m128 */
  27         asm volatile ("movq    (%0), %%mm0" : : "r" (ehlo) : "mm0");
  28         asm volatile ("pshufb  %0, %%mm0" : : "m" (mask));
  29         asm volatile ("movq    %%mm0, %0" : "=m" (hello));
  30         printf("%s\n", hello);
  31
  32         /* psubsw mm1/xmm1, m64/m128 */
  33         asm volatile ("movq    %0, %%mm0" : : "r" (a) : "mm0");
  34         asm volatile ("phsubsw %0, %%mm0" : : "m" (b));
  35         asm volatile ("movq    %%mm0, %0" : "=m" (a));
  36         printf("%i - %i = %i\n", 9, 7, -(int16_t) a);
  37
  38         /* palignr mm1/xmm1, m64/m128, imm8 */
  39         asm volatile ("movdqa  (%0), %%xmm0" : : "r" (e) : "xmm0");
  40         asm volatile ("palignr $14, (%0), %%xmm0" : : "r" (f));
  41         asm volatile ("movdqa  %%xmm0, (%0)" : : "r" (hello));
  42         printf("%5.5s\n", hello);
  43
  44 #if 1 /* SSE4 */
  45         /* popcnt r64, r/m64 */
  46         asm volatile ("movq    $0x8421000010009c63, %%rax" : : : "rax");
  47         asm volatile ("popcnt  %%ax, %%dx" : : : "dx");
  48         asm volatile ("popcnt  %%eax, %%ecx" : : : "ecx");
  49         asm volatile ("popcnt  %rax, %rax");
  50         asm volatile ("movq    %%rax, %0" : "=m" (a));
  51         asm volatile ("movl    %%ecx, %0" : "=m" (c));
  52         asm volatile ("movw    %%dx, %0" : "=m" (d));
  53         printf("%i = %i\n%i = %i = %i\n", 13, (int) a, 9, c, d + 1);
  54 #endif
  55
  56         return 0;
  57 }