v_0 := v.Args[0]
	// match: (SLWconst [s] (MOVWZreg w))
	// result: (SLWconst [s] w)
	for {
		s := auxIntToInt64(v.AuxInt)
		if v_0.Op != OpPPC64MOVWZreg {
			break
		}
		w := v_0.Args[0]
		v.reset(OpPPC64SLWconst)
		v.AuxInt = int64ToAuxInt(s)
		v.AddArg(w)
		return true
	}
	// match: (SLWconst [c] z:(MOVBZreg x))
	// cond: z.Uses == 1 && c < 8

}
func rewriteValueS390X_OpS390XMULLWconst(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	// match: (MULLWconst <t> x [c])
	// cond: isPowerOfTwo32(c&(c-1))
	// result: (ADDW (SLWconst <t> x [uint8(log32(c&(c-1)))]) (SLWconst <t> x [uint8(log32(c&^(c-1)))]))
	for {
		t := v.Type
		c := auxIntToInt32(v.AuxInt)
		x := v_0
		if !(isPowerOfTwo32(c & (c - 1))) {
			break
		}