#include <stdio.h> | |
#include <string.h> | |
int main() | |
{ | |
static const int cmp[4][4] = { | |
{ 110, 134, 158, 182 }, | |
{ 390, 478, 566, 654 }, | |
{ 670, 822, 974, 1126 }, | |
{ 950, 1166, 1382, 1598 } | |
}; | |
int dst[4][4]; | |
int *tmp = &dst[0][0]; | |
asm volatile( | |
".arch armv8-r+sme\n\t" | |
"smstart\n\t" | |
"index z0.b, #0, #1\n\t" | |
"movprfx z1, z0\n\t" | |
"add z1.b, z1.b, #16\n\t" | |
"ptrue p0.b\n\t" | |
"smopa za0.s, p0/m, p0/m, z0.b, z1.b\n\t" | |
"ptrue p0.s, vl4\n\t" | |
"mov w12, #0\n\t" | |
"st1w { za0h.s[w12, #0] }, p0, [%0]\n\t" | |
"add %0, %0, #16\n\t" | |
"st1w { za0h.s[w12, #1] }, p0, [%0]\n\t" | |
"add %0, %0, #16\n\t" | |
"st1w { za0h.s[w12, #2] }, p0, [%0]\n\t" | |
"add %0, %0, #16\n\t" | |
"st1w { za0h.s[w12, #3] }, p0, [%0]\n\t" | |
"smstop" | |
: "+r"(tmp) : : "memory"); | |
if (memcmp(cmp, dst, sizeof(dst)) == 0) { | |
return 0; | |
} | |
/* See above for correct results. */ | |
for (int i = 0; i < 4; ++i) { | |
for (int j = 0; j < 4; ++j) { | |
printf("%6d", dst[i][j]); | |
} | |
printf("\n"); | |
} | |
return 1; | |
} |