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#include <stdio.h>
#include <string.h>
int main()
{
static const long cmp[4][4] = {
{ 110, 134, 158, 182 },
{ 390, 478, 566, 654 },
{ 670, 822, 974, 1126 },
{ 950, 1166, 1382, 1598 }
};
long dst[4][4];
long *tmp = &dst[0][0];
long svl;
/* Validate that we have a wide enough vector for 4 elements. */
asm(".arch armv8-r+sme-i64\n\trdsvl %0, #1" : "=r"(svl));
if (svl < 32) {
return 0;
}
asm volatile(
"smstart\n\t"
"index z0.h, #0, #1\n\t"
"movprfx z1, z0\n\t"
"add z1.h, z1.h, #16\n\t"
"ptrue p0.b\n\t"
"smopa za0.d, p0/m, p0/m, z0.h, z1.h\n\t"
"ptrue p0.d, vl4\n\t"
"mov w12, #0\n\t"
"st1d { za0h.d[w12, #0] }, p0, [%0]\n\t"
"add %0, %0, #32\n\t"
"st1d { za0h.d[w12, #1] }, p0, [%0]\n\t"
"mov w12, #2\n\t"
"add %0, %0, #32\n\t"
"st1d { za0h.d[w12, #0] }, p0, [%0]\n\t"
"add %0, %0, #32\n\t"
"st1d { za0h.d[w12, #1] }, 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("%6ld", dst[i][j]);
}
printf("\n");
}
return 1;
}
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