// A Name is a non-encoded and non-escaped domain name. It is used instead of strings to avoid
// allocations.
type Name struct {
	Data   [255]byte
	Length uint8
}

// NewName creates a new Name from a string.
func NewName(name string) (Name, error) {
	n := Name{Length: uint8(len(name))}
	if len(name) > len(n.Data) {
		return Name{}, errCalcLen
	}
	copy(n.Data[:], name)
	return n, nil
}

	TypeInt128.align = 8
}

// NewNamed returns a new named type for the given type name. obj should be an
// ir.Name. The new type is incomplete (marked as TFORW kind), and the underlying
// type should be set later via SetUnderlying(). References to the type are
// maintained until the type is filled in, so those references can be updated when
// the type is complete.
func NewNamed(obj Object) *Type {
	t := newType(TFORW)

	if addPosition {
		getNewIdent = func(newName string) *ast.Ident {
			mangledIdent := ast.NewIdent(newName)
			if len(newName) == len(r.Name.Go) {
				return mangledIdent
			}
			p := fset.Position((*r.Expr).End())
			if p.Column == 0 {
				return mangledIdent
			}
			return ast.NewIdent(fmt.Sprintf("%s /*line :%d:%d*/", newName, p.Line, p.Column))
		}
	}

		}
		return
	}

	// type definition or generic type declaration
	if !versionErr && tparam0 != nil && !check.verifyVersionf(tparam0, go1_18, "type parameter") {
		versionErr = true
	}

	named := check.newNamed(obj, nil, nil)
	setDefType(def, named)

	if tdecl.TParamList != nil {
		check.openScope(tdecl, "type parameters")
		defer check.closeScope()
		check.collectTypeParams(&named.tparams, tdecl.TParamList)
	}

				default:
					check.errorf(arg, BadDecl, "receiver type parameter %s must be an identifier", arg)
				}
				if par == nil {
					par = syntax.NewName(arg.Pos(), "_")
				}
				tparams = append(tparams, par)
			}

		}
	}

	// unpack receiver name
	if name, _ := rtyp.(*syntax.Name); name != nil {
		rname = name
	}

	return
}

		}
		return
	}

	// type definition or generic type declaration
	if !versionErr && tparam0 != nil && !check.verifyVersionf(tparam0, go1_18, "type parameter") {
		versionErr = true
	}

	named := check.newNamed(obj, nil, nil)
	setDefType(def, named)

	if tdecl.TypeParams != nil {
		check.openScope(tdecl, "type parameters")
		defer check.closeScope()
		check.collectTypeParams(&named.tparams, tdecl.TypeParams)
	}

		return t
	}

	// defined type
	if obj == nil {
		// A named type may be referred to before the underlying type
		// is known - set it up.
		tname := types.NewTypeName(token.NoPos, pkg, name, nil)
		types.NewNamed(tname, nil, nil)
		scope.Insert(tname)
		obj = tname
	}

	// use the previously imported (canonical), or newly created type
	t := obj.Type()
	p.update(t, nlist)

	nt, ok := t.(*types.Named)

		x.typ = Typ[Bool]
		x.val = constant.MakeBool(true)
		// TODO(gri) should have a better position here
		pos := s.Rbrace
		if len(s.Body) > 0 {
			pos = s.Body[0].Pos()
		}
		x.expr = syntax.NewName(pos, "true")
	}

	check.multipleSwitchDefaults(s.Body)

	seen := make(valueMap) // map of seen case values to positions and types
	for i, clause := range s.Body {
		if clause == nil {

			// or the result type in a return statement. Create a pseudo-expression for that operand
			// that makes sense when reported in error messages from infer, below.
			expr := syntax.NewName(x.Pos(), T.desc)
			args = []*operand{{mode: value, expr: expr, typ: T.sig}}
			reverse = true
		}

		// Rename type parameters to avoid problems with recursive instantiations.

			continue
		}
	}
}

// newDefined creates a new defined type named T with the given underlying type.
func newDefined(underlying Type) *Named {
	tname := NewTypeName(nopos, nil, "T", nil)
	return NewNamed(tname, underlying, nil)
}

func TestConvertibleTo(t *testing.T) {
	for _, test := range []struct {
		v, t Type
		want bool
	}{
		{Typ[Int], Typ[Int], true},
		{Typ[Int], Typ[Float32], true},