tests/tcg/aarch64/sme-smopa-2.c

   1 #include <stdio.h>
   2 #include <string.h>
   3
   4 int main()
   5 {
   6     static const long cmp[4][4] = {
   7         {  110,  134,  158,  182 },
   8         {  390,  478,  566,  654 },
   9         {  670,  822,  974, 1126 },
  10         {  950, 1166, 1382, 1598 }
  11     };
  12     long dst[4][4];
  13     long *tmp = &dst[0][0];
  14     long svl;
  15
  16     /* Validate that we have a wide enough vector for 4 elements. */
  17     asm(".arch armv8-r+sme-i64\n\trdsvl %0, #1" : "=r"(svl));
  18     if (svl < 32) {
  19         return 0;
  20     }
  21
  22     asm volatile(
  23         "smstart\n\t"
  24         "index z0.h, #0, #1\n\t"
  25         "movprfx z1, z0\n\t"
  26         "add z1.h, z1.h, #16\n\t"
  27         "ptrue p0.b\n\t"
  28         "smopa za0.d, p0/m, p0/m, z0.h, z1.h\n\t"
  29         "ptrue p0.d, vl4\n\t"
  30         "mov w12, #0\n\t"
  31         "st1d { za0h.d[w12, #0] }, p0, [%0]\n\t"
  32         "add %0, %0, #32\n\t"
  33         "st1d { za0h.d[w12, #1] }, p0, [%0]\n\t"
  34         "mov w12, #2\n\t"
  35         "add %0, %0, #32\n\t"
  36         "st1d { za0h.d[w12, #0] }, p0, [%0]\n\t"
  37         "add %0, %0, #32\n\t"
  38         "st1d { za0h.d[w12, #1] }, p0, [%0]\n\t"
  39         "smstop"
  40         : "+r"(tmp) : : "memory");
  41
  42     if (memcmp(cmp, dst, sizeof(dst)) == 0) {
  43         return 0;
  44     }
  45
  46     /* See above for correct results. */
  47     for (int i = 0; i < 4; ++i) {
  48         for (int j = 0; j < 4; ++j) {
  49             printf("%6ld", dst[i][j]);
  50         }
  51         printf("\n");
  52     }
  53     return 1;
  54 }