}

// CalcSize calculates and stores the size, alignment, eq/hash algorithm,
// and ptrBytes for t.
// If CalcSizeDisabled is set, and the size/alignment
// have not already been calculated, it calls Fatal.
// This is used to prevent data races in the back end.
func CalcSize(t *Type) {
	// Calling CalcSize when typecheck tracing enabled is not safe.
	// See issue #33658.

		base.Fatalf("ambiguous priority %s and %s", a, t.alg)
	}
}

// AlgType returns the AlgKind used for comparing and hashing Type t.
func AlgType(t *Type) AlgKind {
	CalcSize(t)
	return t.alg
}

// TypeHasNoAlg reports whether t does not have any associated hash/eq
// algorithms because t, or some component of t, is marked Noalg.
func TypeHasNoAlg(t *Type) bool {

					base.Errorf("invalid operation: %v (operator %v not defined on %s)", n, op, typekind(l.Type()))
					return l, r, nil
				}

				types.CalcSize(l.Type())
				if r.Type().IsInterface() == l.Type().IsInterface() || l.Type().Size() >= 1<<16 {
					l = ir.NewConvExpr(base.Pos, aop, r.Type(), l)
					l.SetTypecheck(1)
				}

				t = r.Type()
				converted = true

	if base.Flag.W != 0 {
		s := fmt.Sprintf("after walk %v", ir.CurFunc.Sym())
		ir.DumpList(s, ir.CurFunc.Body)
	}

	// Eagerly compute sizes of all variables for SSA.
	for _, n := range fn.Dcl {
		types.CalcSize(n.Type())
	}
}

// walkRecv walks an ORECV node.
func walkRecv(n *ir.UnaryExpr) ir.Node {
	if n.Typecheck() == 0 {
		base.Fatalf("missing typecheck: %+v", n)
	}
	init := ir.TakeInit(n)

	case OpCapture, OpStar:
		// star can be 1+ or 2+; assume 2 pessimistically
		size = 2 + p.calcSize(re.Sub[0], false)
	case OpPlus, OpQuest:
		size = 1 + p.calcSize(re.Sub[0], false)
	case OpConcat:
		for _, sub := range re.Sub {
			size += p.calcSize(sub, false)
		}
	case OpAlternate:
		for _, sub := range re.Sub {
			size += p.calcSize(sub, false)
		}
		if len(re.Sub) > 1 {
			size += int64(len(re.Sub)) - 1
		}

}

func (t *Type) Size() int64 {
	if t.kind == TSSA {
		if t == TypeInt128 {
			return 16
		}
		return 0
	}
	CalcSize(t)
	return t.width
}

func (t *Type) Alignment() int64 {
	CalcSize(t)
	return int64(t.align)
}

func (t *Type) SimpleString() string {
	return t.kind.String()
}

// Cmp is a comparison between values a and b.

			continue
		}
		if mls != nil && mls.Subsumed(n) {
			continue
		}
		if !n.Used() {
			fn.DebugInfo.(*ssa.FuncDebug).OptDcl = fn.Dcl[i:]
			fn.Dcl = fn.Dcl[:i]
			break
		}
		types.CalcSize(n.Type())
		w := n.Type().Size()
		if w >= types.MaxWidth || w < 0 {
			base.Fatalf("bad width")
		}
		if w == 0 && lastHasPtr {
			// Pad between a pointer-containing object and a zero-sized object.

// exactly. If dostrcmp is 2, it matches names with case folding.
func Lookdot(n *ir.SelectorExpr, t *types.Type, dostrcmp int) *types.Field {
	s := n.Sel

	types.CalcSize(t)
	var f1 *types.Field
	if t.IsStruct() {
		f1 = Lookdot1(n, s, t, t.Fields(), dostrcmp)
	} else if t.IsInterface() {
		f1 = Lookdot1(n, s, t, t.AllMethods(), dostrcmp)
	}

	var f2 *types.Field

	nameOff := v.Aux.(*AuxNameOffset)
	return nameOff.Name, nameOff.Offset
}

// CanSSA reports whether values of type t can be represented as a Value.
func CanSSA(t *types.Type) bool {
	types.CalcSize(t)
	if t.Size() > int64(4*types.PtrSize) {
		// 4*Widthptr is an arbitrary constant. We want it
		// to be at least 3*Widthptr so slices can be registerized.
		// Too big and we'll introduce too much register pressure.

	}
	if n.Esc() == ir.EscNone {
		if t.Size() > ir.MaxImplicitStackVarSize {
			base.Fatalf("large ONEW with EscNone: %v", n)
		}
		return stackTempAddr(init, t)
	}
	types.CalcSize(t)
	n.MarkNonNil()
	return n
}

func walkMinMax(n *ir.CallExpr, init *ir.Nodes) ir.Node {
	init.Append(ir.TakeInit(n)...)
	walkExprList(n.Args, init)
	return n
}