{name: "SHRLconst", argLength: 1, reg: gp11, asm: "SHRL", aux: "Int32", resultInArg0: true, clobberFlags: true}, // unsigned arg0 >> auxint, shift amount 0-31
		{name: "SHRWconst", argLength: 1, reg: gp11, asm: "SHRW", aux: "Int16", resultInArg0: true, clobberFlags: true}, // unsigned arg0 >> auxint, shift amount 0-15

		return true
	}
	return false
}
func rewriteValue386_Op386SHRW(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (SHRW x (MOVLconst [c]))
	// cond: c&31 < 16
	// result: (SHRWconst [int16(c&31)] x)
	for {
		x := v_0
		if v_1.Op != Op386MOVLconst {
			break
		}
		c := auxIntToInt32(v_1.AuxInt)
		if !(c&31 < 16) {
			break
		}
		v.reset(Op386SHRWconst)

		{name: "SHRLconst", argLength: 1, reg: gp11, asm: "SHRL", aux: "Int8", resultInArg0: true, clobberFlags: true},
		{name: "SHRWconst", argLength: 1, reg: gp11, asm: "SHRW", aux: "Int8", resultInArg0: true, clobberFlags: true},
		{name: "SHRBconst", argLength: 1, reg: gp11, asm: "SHRB", aux: "Int8", resultInArg0: true, clobberFlags: true},

(SHLL x (MOV(Q|L)const [c])) => (SHLLconst [int8(c&31)] x)

(SHRQ x (MOV(Q|L)const [c])) => (SHRQconst [int8(c&63)] x)
(SHRL x (MOV(Q|L)const [c])) => (SHRLconst [int8(c&31)] x)
(SHRW x (MOV(Q|L)const [c])) && c&31 < 16 => (SHRWconst [int8(c&31)] x)
(SHRW _ (MOV(Q|L)const [c])) && c&31 >= 16 => (MOVLconst [0])
(SHRB x (MOV(Q|L)const [c])) && c&31 < 8 => (SHRBconst [int8(c&31)] x)
(SHRB _ (MOV(Q|L)const [c])) && c&31 >= 8 => (MOVLconst [0])

	}
	return false
}
func rewriteValueAMD64_OpAMD64SHRW(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (SHRW x (MOVQconst [c]))
	// cond: c&31 < 16
	// result: (SHRWconst [int8(c&31)] x)
	for {
		x := v_0
		if v_1.Op != OpAMD64MOVQconst {
			break
		}
		c := auxIntToInt64(v_1.AuxInt)
		if !(c&31 < 16) {
			break
		}
		v.reset(OpAMD64SHRWconst)

		reg: regInfo{
			inputs: []inputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
			outputs: []outputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
		},
	},
	{
		name:         "SHRWconst",
		auxType:      auxInt16,
		argLen:       1,
		resultInArg0: true,
		clobberFlags: true,
		asm:          x86.ASHRW,
		reg: regInfo{
			inputs: []inputInfo{
				{0, 239}, // AX CX DX BX BP SI DI