1 #include <stdio.h>
2 #include <string.h>
3
main()4 int main()
5 {
6 static const int 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 int dst[4][4];
13 int *tmp = &dst[0][0];
14
15 asm volatile(
16 ".arch armv8-r+sme\n\t"
17 "smstart\n\t"
18 "index z0.b, #0, #1\n\t"
19 "movprfx z1, z0\n\t"
20 "add z1.b, z1.b, #16\n\t"
21 "ptrue p0.b\n\t"
22 "smopa za0.s, p0/m, p0/m, z0.b, z1.b\n\t"
23 "ptrue p0.s, vl4\n\t"
24 "mov w12, #0\n\t"
25 "st1w { za0h.s[w12, #0] }, p0, [%0]\n\t"
26 "add %0, %0, #16\n\t"
27 "st1w { za0h.s[w12, #1] }, p0, [%0]\n\t"
28 "add %0, %0, #16\n\t"
29 "st1w { za0h.s[w12, #2] }, p0, [%0]\n\t"
30 "add %0, %0, #16\n\t"
31 "st1w { za0h.s[w12, #3] }, p0, [%0]\n\t"
32 "smstop"
33 : "+r"(tmp) : : "memory");
34
35 if (memcmp(cmp, dst, sizeof(dst)) == 0) {
36 return 0;
37 }
38
39 /* See above for correct results. */
40 for (int i = 0; i < 4; ++i) {
41 for (int j = 0; j < 4; ++j) {
42 printf("%6d", dst[i][j]);
43 }
44 printf("\n");
45 }
46 return 1;
47 }
48