vmseq.vi

No synopsis available.

This instruction is defined by:

V, version >= 0

This instruction is included in the following profiles:

RVA22S64 (Optional)
RVA22U64 (Optional)

Encoding

Assembly format

vmseq.vi vm, vs2, vd, imm

Synopsis

No description available.

Access

M	HS	U	VS	VU
Always	Always	Always	Always	Always

Always

Decode Variables

Bits<1> vm = $encoding[25];
Bits<5> vs2 = $encoding[24:20];
Bits<5> simm5 = $encoding[19:15];
Bits<5> vd = $encoding[11:7];

Execution

IDL
Sail

{
  let SEW      = get_sew();
  let LMUL_pow = get_lmul_pow();
  let num_elem = get_num_elem(LMUL_pow, SEW);

  if illegal_vd_unmasked() 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 imm_val : bits('m)                  = sign_extend(simm);
  let vs2_val : vector('n, dec, bits('m)) = read_vreg(num_elem, SEW, LMUL_pow, 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, LMUL_pow, vd_val, vm_val);

  foreach (i from 0 to (num_elem - 1)) {
    if mask[i] then {
      let res : bool = match funct6 {
        VICMP_VMSEQ    => vs2_val[i] == imm_val,
        VICMP_VMSNE    => vs2_val[i] != imm_val,
        VICMP_VMSLEU   => unsigned(vs2_val[i]) <= unsigned(imm_val),
        VICMP_VMSLE    => signed(vs2_val[i]) <= signed(imm_val),
        VICMP_VMSGTU   => unsigned(vs2_val[i]) > unsigned(imm_val),
        VICMP_VMSGT    => signed(vs2_val[i]) > signed(imm_val)
      };
      result[i] = res
    }
  };

  write_vmask(num_elem, vd, result);
  vstart = zeros();
  RETIRE_SUCCESS
}