{name: "DIVW", argLength: 2, reg: gp11div, typ: "(Int16,Int16)", asm: "IDIVW", aux: "Bool", clobberFlags: true},
		{name: "DIVQU", argLength: 2, reg: gp11div, typ: "(UInt64,UInt64)", asm: "DIVQ", clobberFlags: true},
		{name: "DIVLU", argLength: 2, reg: gp11div, typ: "(UInt32,UInt32)", asm: "DIVL", clobberFlags: true},

(Select0 (Mul64uhilo x y)) => (UMULH x y)
(Select1 (Mul64uhilo x y)) => (MUL x y)

(Div64 [false] x y) => (DIV  x y)
(Div32 [false] x y) => (DIVW x y)
(Div16 [false] x y) => (DIVW (SignExt16to32 x) (SignExt16to32 y))
(Div16u x y) => (UDIVW (ZeroExt16to32 x) (ZeroExt16to32 y))
(Div8   x y) => (DIVW  (SignExt8to32  x) (SignExt8to32  y))
(Div8u  x y) => (UDIVW (ZeroExt8to32  x) (ZeroExt8to32  y))
(Div64u ...) => (UDIV  ...)

		return true
	}
}
func rewriteValueRISCV64_OpDiv16(v *Value) bool {
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Div16 x y [false])
	// result: (DIVW (SignExt16to32 x) (SignExt16to32 y))
	for {
		if auxIntToBool(v.AuxInt) != false {
			break
		}
		x := v_0
		y := v_1
		v.reset(OpRISCV64DIVW)
		v0 := b.NewValue0(v.Pos, OpSignExt16to32, typ.Int32)

head, she tried to get her head down to them, and was delighted
to find that her neck would bend about easily in any direction,
like a serpent.  She had just succeeded in curving it down into a
graceful zigzag, and was going to dive in among the leaves, which
she found to be nothing but the tops of the trees under which she
had been wandering, when a sharp hiss made her draw back in a
hurry:  a large pigeon had flown into her face, and was beating

head, she tried to get her head down to them, and was delighted
to find that her neck would bend about easily in any direction,
like a serpent.  She had just succeeded in curving it down into a
graceful zigzag, and was going to dive in among the leaves, which
she found to be nothing but the tops of the trees under which she
had been wandering, when a sharp hiss made her draw back in a
hurry:  a large pigeon had flown into her face, and was beating