LDBRX:          "ldbrx",
	LFIWZX:         "lfiwzx",
	LHARX:          "lharx",
	LXSDX:          "lxsdx",
	LXVD2X:         "lxvd2x",
	LXVDSX:         "lxvdsx",
	LXVW4X:         "lxvw4x",
	POPCNTD:        "popcntd",
	POPCNTW:        "popcntw",
	STBCXCC:        "stbcx.",
	STDBRX:         "stdbrx",
	STHCXCC:        "sthcx.",
	STXSDX:         "stxsdx",
	STXVD2X:        "stxvd2x",
	STXVW4X:        "stxvw4x",

		return true
	}
}
func rewriteValuePPC64_OpCtz64(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (Ctz64 x)
	// cond: buildcfg.GOPPC64<=8
	// result: (POPCNTD (ANDN <typ.Int64> (ADDconst <typ.Int64> [-1] x) x))
	for {
		x := v_0
		if !(buildcfg.GOPPC64 <= 8) {
			break
		}
		v.reset(OpPPC64POPCNTD)
		v0 := b.NewValue0(v.Pos, OpPPC64ANDN, typ.Int64)