type.isULong -> KaConstantValue.KaUnsignedLongConstantValue((value as Number).toLong().toULong(), expression)
            type.isString -> KaConstantValue.KaStringConstantValue(value.toString(), expression)
            type.isFloat -> KaConstantValue.KaFloatConstantValue((value as Number).toFloat(), expression)

	var cs, ncs ir.Node // const string, non-const string
	switch {
	case ir.IsConst(n.X, constant.String) && ir.IsConst(n.Y, constant.String):
		// ignore; will be constant evaluated
	case ir.IsConst(n.X, constant.String):
		cs = n.X
		ncs = n.Y
	case ir.IsConst(n.Y, constant.String):
		cs = n.Y
		ncs = n.X
	}
	if cs != nil {
		cmp := n.Op()

				*rounded = constant.BinaryOp(re, token.ADD, constant.MakeImag(im))
				return true
			}
		case UntypedComplex:
			return true
		default:
			panic("unreachable")
		}

	case isString(typ):
		return x.Kind() == constant.String

	case isBoolean(typ):
		return x.Kind() == constant.Bool
	}

	return false
}

func fitsFloat32(x constant.Value) bool {
	f32, _ := constant.Float32Val(x)

				*rounded = constant.BinaryOp(re, token.ADD, constant.MakeImag(im))
				return true
			}
		case UntypedComplex:
			return true
		default:
			panic("unreachable")
		}

	case isString(typ):
		return x.Kind() == constant.String

	case isBoolean(typ):
		return x.Kind() == constant.Bool
	}

	return false
}

func fitsFloat32(x constant.Value) bool {
	f32, _ := constant.Float32Val(x)

		// StdSizes.Alignof won't be called for them.
		assert(!isTypeParam(T))
		return s.WordSize
	case *Basic:
		// Strings are like slices and interfaces.
		if t.Info()&IsString != 0 {
			return s.WordSize
		}
	case *TypeParam, *Union:
		panic("unreachable")
	}
	a := s.Sizeof(T) // may be 0 or negative
	// spec: "For a variable x of any type: unsafe.Alignof(x) is at least 1."

	Format(f State, verb rune)
}

// Stringer is implemented by any value that has a String method,
// which defines the “native” format for that value.
// The String method is used to print values passed as an operand
// to any format that accepts a string or to an unformatted printer
// such as [Print].
type Stringer interface {
	String() string
}

// GoStringer is implemented by any value that has a GoString method,

func MakeReadFile(pass *analysis.Pass) func(filename string) ([]byte, error) {
	return func(filename string) ([]byte, error) {
		if err := CheckReadable(pass, filename); err != nil {
			return nil, err
		}
		return os.ReadFile(filename)
	}
}

// CheckReadable enforces the access policy defined by the ReadFile field of [analysis.Pass].
func CheckReadable(pass *analysis.Pass, filename string) error {

		// StdSizes.Alignof won't be called for them.
		assert(!isTypeParam(T))
		return s.WordSize
	case *Basic:
		// Strings are like slices and interfaces.
		if t.Info()&IsString != 0 {
			return s.WordSize
		}
	case *TypeParam, *Union:
		panic("unreachable")
	}
	a := s.Sizeof(T) // may be 0 or negative
	// spec: "For a variable x of any type: unsafe.Alignof(x) is at least 1."

		if n == 0 {
			panic("variadic function must have at least one parameter")
		}
		core := coreString(params.At(n - 1).typ)
		if _, ok := core.(*Slice); !ok && !isString(core) {
			panic(fmt.Sprintf("got %s, want variadic parameter with unnamed slice type or string as core type", core.String()))
		}
	}
	sig := &Signature{recv: recv, params: params, results: results, variadic: variadic}
	if len(recvTypeParams) != 0 {
		if recv == nil {

		if n == 0 {
			panic("variadic function must have at least one parameter")
		}
		core := coreString(params.At(n - 1).typ)
		if _, ok := core.(*Slice); !ok && !isString(core) {
			panic(fmt.Sprintf("got %s, want variadic parameter with unnamed slice type or string as core type", core.String()))
		}
	}
	sig := &Signature{recv: recv, params: params, results: results, variadic: variadic}
	if len(recvTypeParams) != 0 {
		if recv == nil {