v2.AuxInt = int64ToAuxInt(-1)
		v2.AddArg(x)
		v1.AddArg2(v2, x)
		v0.AddArg(v1)
		v.AddArg(v0)
		return true
	}
	// match: (Ctz32 x)
	// result: (CNTTZW (MOVWZreg x))
	for {
		x := v_0
		v.reset(OpPPC64CNTTZW)
		v0 := b.NewValue0(v.Pos, OpPPC64MOVWZreg, typ.Int64)
		v0.AddArg(x)
		v.AddArg(v0)
		return true
	}
}

		v3 := b.NewValue0(v.Pos, OpS390XANDW, t)
		v4 := b.NewValue0(v.Pos, OpS390XSUBWconst, t)
		v4.AuxInt = int32ToAuxInt(1)
		v4.AddArg(x)
		v5 := b.NewValue0(v.Pos, OpS390XNOTW, t)
		v5.AddArg(x)
		v3.AddArg2(v4, v5)
		v2.AddArg(v3)
		v1.AddArg(v2)
		v.AddArg2(v0, v1)
		return true
	}
}
func rewriteValueS390X_OpCtz64(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block

		v0.AuxInt = int32ToAuxInt(c)
		v0.AddArg2(x, y)
		v.AddArg(v0)
		return true
	}
	// match: (CMP x (SRLconst [c] y))
	// result: (CMPshiftRL x y [c])
	for {
		x := v_0
		if v_1.Op != OpARMSRLconst {
			break
		}
		c := auxIntToInt32(v_1.AuxInt)
		y := v_1.Args[0]
		v.reset(OpARMCMPshiftRL)
		v.AuxInt = int32ToAuxInt(c)
		v.AddArg2(x, y)
		return true
	}

		v0 := b.NewValue0(v.Pos, Op386LEAL4, v.Type)
		v0.AddArg2(x, x)
		v.AddArg2(x, v0)
		return true
	}
	// match: (MULLconst [13] x)
	// result: (LEAL4 x (LEAL2 <v.Type> x x))
	for {
		if auxIntToInt32(v.AuxInt) != 13 {
			break
		}
		x := v_0
		v.reset(Op386LEAL4)
		v0 := b.NewValue0(v.Pos, Op386LEAL2, v.Type)
		v0.AddArg2(x, x)
		v.AddArg2(x, v0)
		return true
	}

			// Make new structure.
			new := s.newValue0(ssa.StructMakeOp(t.NumFields()), t)

			// Add fields as args.
			for i := 0; i < nf; i++ {
				if i == idx {
					new.AddArg(right)
				} else {
					new.AddArg(s.newValue1I(ssa.OpStructSelect, t.FieldType(i), int64(i), old))
				}
			}

			// Recursively assign the new value we've made to the base of the dot op.
			s.assign(left.X, new, false, 0)