v.AddArg(v0)
		return true
	}
	return false
}
func rewriteValueAMD64_OpBitLen64(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (BitLen64 <t> x)
	// cond: buildcfg.GOAMD64 < 3
	// result: (ADDQconst [1] (CMOVQEQ <t> (Select0 <t> (BSRQ x)) (MOVQconst <t> [-1]) (Select1 <types.TypeFlags> (BSRQ x))))
	for {
		t := v.Type
		x := v_0

		v1.AddArg(x)
		v.AddArg2(v0, v1)
		return true
	}
}
func rewriteValueARM64_OpBitLen64(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (BitLen64 x)
	// result: (SUB (MOVDconst [64]) (CLZ <typ.Int> x))
	for {
		x := v_0
		v.reset(OpARM64SUB)
		v0 := b.NewValue0(v.Pos, OpARM64MOVDconst, typ.UInt64)
		v0.AuxInt = int64ToAuxInt(64)