vmsif.m
No synopsis available
No description available.
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 {
result[i] = if found_elem then false else true;
if vs2_val[i] then found_elem = true
}
};
write_vmask(num_elem, vd, result);
vstart = zeros();
RETIRE_SUCCESS
}