len := v.Block.NewValue0(v.Pos, OpPhi, lenType)
	cap := v.Block.NewValue0(v.Pos, OpPhi, lenType)
	for _, a := range v.Args {
		ptr.AddArg(a.Block.NewValue1(v.Pos, OpSlicePtr, ptrType, a))
		len.AddArg(a.Block.NewValue1(v.Pos, OpSliceLen, lenType, a))
		cap.AddArg(a.Block.NewValue1(v.Pos, OpSliceCap, lenType, a))
	}
	v.reset(OpSliceMake)
	v.AddArg(ptr)
	v.AddArg(len)
	v.AddArg(cap)
}

			return s.newValue2(ssa.OpComplexMake, n.Type(),
				s.newValue1(negop, tp, s.newValue1(ssa.OpComplexReal, tp, a)),
				s.newValue1(negop, tp, s.newValue1(ssa.OpComplexImag, tp, a)))
		}
		return s.newValue1(s.ssaOp(n.Op(), n.Type()), a.Type, a)
	case ir.ONOT, ir.OBITNOT:
		n := n.(*ir.UnaryExpr)
		a := s.expr(n.X)
		return s.newValue1(s.ssaOp(n.Op(), n.Type()), a.Type, a)
	case ir.OIMAG, ir.OREAL:

	}
}

func truncate(b *Block, pos src.XPos, v *Value, from, to int64) *Value {
	switch from*10 + to {
	case 82:
		return b.NewValue1(pos, OpTrunc64to16, types.Types[types.TUINT16], v)
	case 84:
		return b.NewValue1(pos, OpTrunc64to32, types.Types[types.TUINT32], v)
	case 42:
		return b.NewValue1(pos, OpTrunc32to16, types.Types[types.TUINT16], v)
	default:
		base.Fatalf("bad sizes %d %d\n", from, to)
		return nil
	}
}

	default:
		return
	}

	if reverse == 1 {
		negate = !negate
	}

	a := b0.Controls[0]
	if negate {
		a = v.Block.NewValue1(v.Pos, OpNot, a.Type, a)
	}
	v.AddArg(a)

	cvt := v.Block.NewValue1(v.Pos, OpCvtBoolToUint8, v.Block.Func.Config.Types.UInt8, a)
	switch v.Type.Size() {
	case 1:
		v.reset(OpCopy)
	case 2:
		v.reset(OpZeroExt8to16)
	case 4:

			// of narrowing conversions).
			x = e.p.NewValue1(pos, OpStoreReg, loc.(LocalSlot).Type, x)
		}
	} else {
		// Emit move from src to dst.
		_, srcReg := src.(*Register)
		if srcReg {
			if dstReg {
				x = e.p.NewValue1(pos, OpCopy, c.Type, c)
			} else {
				x = e.p.NewValue1(pos, OpStoreReg, loc.(LocalSlot).Type, c)
			}
		} else {
			if dstReg {

			if curCall == nil || curCall.AuxInt == maxEntries {
				t := types.NewTuple(types.Types[types.TUINTPTR].PtrTo(), types.TypeMem)
				curCall = bThen.NewValue1(pos, OpWB, t, memThen)
				curPtr = bThen.NewValue1(pos, OpSelect0, types.Types[types.TUINTPTR].PtrTo(), curCall)
				memThen = bThen.NewValue1(pos, OpSelect1, types.TypeMem, curCall)
			}
			// Store value in write buffer
			num := curCall.AuxInt
			curCall.AuxInt = num + 1

		test.Pos = bb.Pos
		sched.Pos = bb.Pos

		// if sp < g.limit { goto sched }
		// goto header

		cfgtypes := &f.Config.Types
		pt := cfgtypes.Uintptr
		g := test.NewValue1(bb.Pos, OpGetG, pt, mem0)
		sp := test.NewValue0(bb.Pos, OpSP, pt)
		cmpOp := OpLess64U
		if pt.Size() == 4 {
			cmpOp = OpLess32U
		}
		limaddr := test.NewValue1I(bb.Pos, OpOffPtr, pt, 2*pt.Size(), g)

	return
}

func (x *expandState) decomposePair(pos src.XPos, b *Block, a, mem *Value, t0, t1 *types.Type, o0, o1 Op, rc *registerCursor) *Value {
	e := b.NewValue1(pos, o0, t0, a)
	pos = pos.WithNotStmt()
	mem = x.decomposeAsNecessary(pos, b, e, mem, rc.next(t0))
	e = b.NewValue1(pos, o1, t1, a)
	mem = x.decomposeAsNecessary(pos, b, e, mem, rc.next(t1))
	return mem
}

	v := b.Func.newValue(op, t, b, pos)
	v.AuxInt = auxint
	v.Aux = aux
	v.Args = v.argstorage[:0]
	return v
}

// NewValue1 returns a new value in the block with one argument and zero aux values.
func (b *Block) NewValue1(pos src.XPos, op Op, t *types.Type, arg *Value) *Value {
	v := b.Func.newValue(op, t, b, pos)
	v.AuxInt = 0
	v.Args = v.argstorage[:1]
	v.argstorage[0] = arg