vmsof.m
No synopsis available.
This instruction is defined by:
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V, version >= 0
This instruction is included in the following profiles:
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RVA22S64 (Optional)
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RVA22U64 (Optional)
Decode Variables
Bits<1> vm = $encoding[25];
Bits<5> vs2 = $encoding[24:20];
Bits<5> vd = $encoding[11:7];
Execution
-
IDL
-
Sail
{
let SEW = get_sew();
let LMUL_pow = get_lmul_pow();
let num_elem = unsigned(vlenb) * 8;
if illegal_normal(vd, vm) | not(assert_vstart(0)) | vd == vs2
then { handle_illegal(); return RETIRE_FAIL };
let 'n = num_elem;
let 'm = SEW;
let vm_val : vector('n, dec, bool) = read_vmask(num_elem, vm, 0b00000);
let vs2_val : vector('n, dec, bool) = read_vmask(num_elem, 0b0, vs2);
let vd_val : vector('n, dec, bool) = read_vmask(num_elem, 0b0, vd);
result : vector('n, dec, bool) = undefined;
mask : vector('n, dec, bool) = undefined;
(result, mask) = init_masked_result_cmp(num_elem, SEW, 0, vd_val, vm_val);
found_elem : bool = false;
foreach (i from 0 to (num_elem - 1)) {
if mask[i] then {
if vs2_val[i] & not(found_elem) then {
result[i] = true;
found_elem = true
} else {
result[i] = false
}
}
};
write_vmask(num_elem, vd, result);
vstart = zeros();
RETIRE_SUCCESS
}