=> (MakeResult (Eq16 (Load <typ.Int16> sptr mem) (Const16 <typ.Int16> [int16(read16(scon,0,config.ctxt.Arch.ByteOrder))])) mem)

(StaticLECall {callAux} (Addr {scon} (SB)) sptr (Const64 [2]) mem)
  && isSameCall(callAux, "runtime.memequal")
  && symIsRO(scon)
  && canLoadUnaligned(config)
  => (MakeResult (Eq16 (Load <typ.Int16> sptr mem) (Const16 <typ.Int16> [int16(read16(scon,0,config.ctxt.Arch.ByteOrder))])) mem)

	{V(float64(48)), V(uint8(48))},
	{V(int16(49)), V(int16(49))},
	{V(int16(50)), V(uint16(50))},
	{V(uint16(51)), V(int16(51))},
	{V(int16(52)), V(int32(52))},
	{V(int32(53)), V(int16(53))},
	{V(int16(54)), V(uint32(54))},
	{V(uint32(55)), V(int16(55))},
	{V(int16(56)), V(int64(56))},
	{V(int64(57)), V(int16(57))},
	{V(int16(58)), V(uint64(58))},
	{V(uint64(59)), V(int16(59))},
	{V(int16(60)), V(int(60))},

func roff(rm int16, o uint32, amount int16) uint32 {
	return uint32(rm&31)<<16 | o<<13 | uint32(amount)<<10
}

// encRegShiftOrExt returns the encoding of shifted/extended register, Rx<<n and Rx.UXTW<<n, etc.
func (c *ctxt7) encRegShiftOrExt(p *obj.Prog, a *obj.Addr, r int16) uint32 {
	var num, rm int16
	num = (r >> 5) & 7
	rm = r & 31
	switch {

		if d1 < 0 || d1 >= DISP12 {
			if b2 == int16(regtmp(p)) {
				c.ctxt.Diag("regtmp(p) conflict")
			}
			if b1 != int16(regtmp(p)) {
				zRRE(op_LGR, regtmp(p), uint32(b1), asm)
			}
			zRIL(_a, op_AGFI, regtmp(p), uint32(d1), asm)
			if d1 == d2 && b1 == b2 {
				d2 = 0
				b2 = int16(regtmp(p))
			}
			d1 = 0
			b1 = int16(regtmp(p))
		}
		if d2 < 0 || d2 >= DISP12 {

// It panics if v's Kind is not [Int], [Int8], [Int16], [Int32], or [Int64], or if [Value.CanSet] returns false.
func (v Value) SetInt(x int64) {
	v.mustBeAssignable()
	switch k := v.kind(); k {
	default:
		panic(&ValueError{"reflect.Value.SetInt", v.kind()})
	case Int:
		*(*int)(v.ptr) = int(x)
	case Int8:
		*(*int8)(v.ptr) = int8(x)
	case Int16:
		*(*int16)(v.ptr) = int16(x)
	case Int32:

	OP_EXTSWSLI = 31<<26 | 445<<2
	OP_SETB     = 31<<26 | 128<<1
)

func pfxadd(rt, ra int16, r uint32, imm32 int64) (uint32, uint32) {
	return AOP_PFX_10_MLS(r, uint32(imm32>>16)), AOP_IRR(14<<26, uint32(rt), uint32(ra), uint32(imm32))
}

func pfxload(a obj.As, reg int16, base int16, r uint32) (uint32, uint32) {
	switch a {
	case AMOVH:

	}

	if int(p.From.Reg) == from {
		p.From.Reg = int16(to)
		p.Ft = 0
	}

	if int(p.To.Reg) == from {
		p.To.Reg = int16(to)
		p.Tt = 0
	}

	if int(p.From.Index) == from {
		p.From.Index = int16(to)
		p.Ft = 0
	}

	if int(p.To.Index) == from {
		p.To.Index = int16(to)
		p.Tt = 0
	}

	if false { /* debug['Q'] */

	if !n.Valid {
		return nil, nil
	}
	return int64(n.Int32), nil
}

// NullInt16 represents an int16 that may be null.
// NullInt16 implements the [Scanner] interface so
// it can be used as a scan destination, similar to [NullString].
type NullInt16 struct {
	Int16 int16
	Valid bool // Valid is true if Int16 is not NULL
}

// Scan implements the [Scanner] interface.
func (n *NullInt16) Scan(value any) error {

		case 1:
			P[off] = byte(int8(o))
		case 2:
			if (rt == objabi.R_PCREL || rt == objabi.R_CALL) && o != int64(int16(o)) {
				st.err.Errorf(s, "pc-relative relocation address for %s is too big: %#x", ldr.SymName(rs), o)
			} else if o != int64(int16(o)) && o != int64(uint16(o)) {
				st.err.Errorf(s, "non-pc-relative relocation address for %s is too big: %#x", ldr.SymName(rs), uint64(o))
			}

		{NullInt32{222, false}, 1, NullInt32{0, false}},
		{0, NullInt32{31, false}, nil},
	}}
	nullTestRun(t, spec)
}

func TestNullInt16Param(t *testing.T) {
	spec := nullTestSpec{"nullint16", "int16", [6]nullTestRow{
		{NullInt16{31, true}, 1, NullInt16{31, true}},
		{NullInt16{-22, false}, 1, NullInt16{0, false}},
		{22, 1, NullInt16{22, true}},
		{NullInt16{33, true}, 1, NullInt16{33, true}},