v8/test/torque/test-torque.tq
Seth Brenith e620ba139b [torque] Address remaining usages of @noVerifier in base.tq
For every @noVerifier in base.tq, this change either removes it or
ensures that it has some annotation explaining why it can't be removed.
The @noVerifier usages that can't be removed fall into the following
categories:
1. Classes that don't have their own instance types and therefore have
   no meaningful way to do an Is...() check
2. Fields that might not exist
3. Fields that are waiting for MaybeObject support in Torque

Bug: v8:9311
Change-Id: Id452d4151ec07347ae96a9b5f3b26e2ac8065d31
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1659134
Reviewed-by: Daniel Clifford <danno@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#62263}
2019-06-18 22:44:58 +00:00

977 lines
22 KiB
Plaintext

// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
namespace test {
macro ElementsKindTestHelper1(kind: constexpr ElementsKind): bool {
if constexpr ((kind == UINT8_ELEMENTS) || (kind == UINT16_ELEMENTS)) {
return true;
} else {
return false;
}
}
macro ElementsKindTestHelper2(kind: constexpr ElementsKind): constexpr bool {
return ((kind == UINT8_ELEMENTS) || (kind == UINT16_ELEMENTS));
}
macro LabelTestHelper1(): never
labels Label1 {
goto Label1;
}
macro LabelTestHelper2(): never
labels Label2(Smi) {
goto Label2(42);
}
macro LabelTestHelper3(): never
labels Label3(Oddball, Smi) {
goto Label3(Null, 7);
}
@export
macro TestConstexpr1() {
check(FromConstexpr<bool>(IsFastElementsKind(PACKED_SMI_ELEMENTS)));
}
@export
macro TestConstexprIf() {
check(ElementsKindTestHelper1(UINT8_ELEMENTS));
check(ElementsKindTestHelper1(UINT16_ELEMENTS));
check(!ElementsKindTestHelper1(UINT32_ELEMENTS));
}
@export
macro TestConstexprReturn() {
check(FromConstexpr<bool>(ElementsKindTestHelper2(UINT8_ELEMENTS)));
check(FromConstexpr<bool>(ElementsKindTestHelper2(UINT16_ELEMENTS)));
check(!FromConstexpr<bool>(ElementsKindTestHelper2(UINT32_ELEMENTS)));
check(FromConstexpr<bool>(!ElementsKindTestHelper2(UINT32_ELEMENTS)));
}
@export
macro TestGotoLabel(): Boolean {
try {
LabelTestHelper1() otherwise Label1;
}
label Label1 {
return True;
}
}
@export
macro TestGotoLabelWithOneParameter(): Boolean {
try {
LabelTestHelper2() otherwise Label2;
}
label Label2(smi: Smi) {
check(smi == 42);
return True;
}
}
@export
macro TestGotoLabelWithTwoParameters(): Boolean {
try {
LabelTestHelper3() otherwise Label3;
}
label Label3(o: Oddball, smi: Smi) {
check(o == Null);
check(smi == 7);
return True;
}
}
builtin GenericBuiltinTest<T: type>(_c: Context, _param: T): Object {
return Null;
}
GenericBuiltinTest<Object>(_c: Context, param: Object): Object {
return param;
}
@export
macro TestBuiltinSpecialization(c: Context) {
check(GenericBuiltinTest<Smi>(c, 0) == Null);
check(GenericBuiltinTest<Smi>(c, 1) == Null);
check(GenericBuiltinTest<Object>(c, Undefined) == Undefined);
check(GenericBuiltinTest<Object>(c, Undefined) == Undefined);
}
macro LabelTestHelper4(flag: constexpr bool): never
labels Label4, Label5 {
if constexpr (flag) {
goto Label4;
} else {
goto Label5;
}
}
macro CallLabelTestHelper4(flag: constexpr bool): bool {
try {
LabelTestHelper4(flag) otherwise Label4, Label5;
}
label Label4 {
return true;
}
label Label5 {
return false;
}
}
@export
macro TestPartiallyUnusedLabel(): Boolean {
const r1: bool = CallLabelTestHelper4(true);
const r2: bool = CallLabelTestHelper4(false);
if (r1 && !r2) {
return True;
} else {
return False;
}
}
macro GenericMacroTest<T: type>(_param: T): Object {
return Undefined;
}
GenericMacroTest<Object>(param2: Object): Object {
return param2;
}
macro GenericMacroTestWithLabels<T: type>(_param: T): Object
labels _X {
return Undefined;
}
GenericMacroTestWithLabels<Object>(param2: Object): Object
labels Y {
return Cast<Smi>(param2) otherwise Y;
}
@export
macro TestMacroSpecialization() {
try {
const _smi0: Smi = 0;
check(GenericMacroTest<Smi>(0) == Undefined);
check(GenericMacroTest<Smi>(1) == Undefined);
check(GenericMacroTest<Object>(Null) == Null);
check(GenericMacroTest<Object>(False) == False);
check(GenericMacroTest<Object>(True) == True);
check((GenericMacroTestWithLabels<Smi>(0) otherwise Fail) == Undefined);
check((GenericMacroTestWithLabels<Smi>(0) otherwise Fail) == Undefined);
try {
GenericMacroTestWithLabels<Object>(False) otherwise Expected;
}
label Expected {}
}
label Fail {
unreachable;
}
}
builtin TestHelperPlus1(_context: Context, x: Smi): Smi {
return x + 1;
}
builtin TestHelperPlus2(_context: Context, x: Smi): Smi {
return x + 2;
}
@export
macro TestFunctionPointers(implicit context: Context)(): Boolean {
let fptr: builtin(Context, Smi) => Smi = TestHelperPlus1;
check(fptr(context, 42) == 43);
fptr = TestHelperPlus2;
check(fptr(context, 42) == 44);
return True;
}
@export
macro TestVariableRedeclaration(implicit context: Context)(): Boolean {
let _var1: int31 = FromConstexpr<bool>(42 == 0) ? 0 : 1;
let _var2: int31 = FromConstexpr<bool>(42 == 0) ? 1 : 0;
return True;
}
@export
macro TestTernaryOperator(x: Smi): Smi {
const b: bool = x < 0 ? true : false;
return b ? x - 10 : x + 100;
}
@export
macro TestFunctionPointerToGeneric(c: Context) {
const fptr1: builtin(Context, Smi) => Object = GenericBuiltinTest<Smi>;
const fptr2: builtin(Context, Object) => Object =
GenericBuiltinTest<Object>;
check(fptr1(c, 0) == Null);
check(fptr1(c, 1) == Null);
check(fptr2(c, Undefined) == Undefined);
check(fptr2(c, Undefined) == Undefined);
}
type ObjectToObject = builtin(Context, Object) => Object;
@export
macro TestTypeAlias(x: ObjectToObject): BuiltinPtr {
return x;
}
@export
macro TestUnsafeCast(implicit context: Context)(n: Number): Boolean {
if (TaggedIsSmi(n)) {
const m: Smi = UnsafeCast<Smi>(n);
check(TestHelperPlus1(context, m) == 11);
return True;
}
return False;
}
@export
macro TestHexLiteral() {
check(Convert<intptr>(0xffff) + 1 == 0x10000);
check(Convert<intptr>(-0xffff) == -65535);
}
@export
macro TestLargeIntegerLiterals(implicit c: Context)() {
let _x: int32 = 0x40000000;
let _y: int32 = 0x7fffffff;
}
@export
macro TestMultilineAssert() {
const someVeryLongVariableNameThatWillCauseLineBreaks: Smi = 5;
check(
someVeryLongVariableNameThatWillCauseLineBreaks > 0 &&
someVeryLongVariableNameThatWillCauseLineBreaks < 10);
}
@export
macro TestNewlineInString() {
Print('Hello, World!\n');
}
const kConstexprConst: constexpr int31 = 5;
const kIntptrConst: intptr = 4;
const kSmiConst: Smi = 3;
@export
macro TestModuleConstBindings() {
check(kConstexprConst == Int32Constant(5));
check(kIntptrConst == 4);
check(kSmiConst == 3);
}
@export
macro TestLocalConstBindings() {
const x: constexpr int31 = 3;
const xSmi: Smi = x;
{
const x: Smi = x + FromConstexpr<Smi>(1);
check(x == xSmi + 1);
const xSmi: Smi = x;
check(x == xSmi);
check(x == 4);
}
check(xSmi == 3);
check(x == xSmi);
}
struct TestStructA {
indexes: FixedArray;
i: Smi;
k: Number;
}
struct TestStructB {
x: TestStructA;
y: Smi;
}
@export
macro TestStruct1(i: TestStructA): Smi {
return i.i;
}
@export
macro TestStruct2(implicit context: Context)(): TestStructA {
return TestStructA{
indexes: UnsafeCast<FixedArray>(kEmptyFixedArray),
i: 27,
k: 31
};
}
@export
macro TestStruct3(implicit context: Context)(): TestStructA {
let a: TestStructA =
TestStructA{indexes: UnsafeCast<FixedArray>(kEmptyFixedArray), i: 13, k: 5};
let _b: TestStructA = a;
const c: TestStructA = TestStruct2();
a.i = TestStruct1(c);
a.k = a.i;
let d: TestStructB;
d.x = a;
d = TestStructB{x: a, y: 7};
let _e: TestStructA = d.x;
let f: Smi = TestStructA{
indexes: UnsafeCast<FixedArray>(kEmptyFixedArray),
i: 27,
k: 31
}.i;
f = TestStruct2().i;
return a;
}
struct TestStructC {
x: TestStructA;
y: TestStructA;
}
@export
macro TestStruct4(implicit context: Context)(): TestStructC {
return TestStructC{x: TestStruct2(), y: TestStruct2()};
}
macro TestStructInLabel(implicit context: Context)(): never labels
Foo(TestStructA) {
goto Foo(TestStruct2());
}
@export // Silence unused warning.
macro CallTestStructInLabel(implicit context: Context)() {
try {
TestStructInLabel() otherwise Foo;
}
label Foo(_s: TestStructA) {}
}
// This macro tests different versions of the for-loop where some parts
// are (not) present.
@export
macro TestForLoop() {
let sum: Smi = 0;
for (let i: Smi = 0; i < 5; ++i) sum += i;
check(sum == 10);
sum = 0;
let j: Smi = 0;
for (; j < 5; ++j) sum += j;
check(sum == 10);
sum = 0;
j = 0;
for (; j < 5;) sum += j++;
check(sum == 10);
// Check that break works. No test expression.
sum = 0;
for (let i: Smi = 0;; ++i) {
if (i == 5) break;
sum += i;
}
check(sum == 10);
sum = 0;
j = 0;
for (;;) {
if (j == 5) break;
sum += j;
j++;
}
check(sum == 10);
// The following tests are the same as above, but use continue to skip
// index 3.
sum = 0;
for (let i: Smi = 0; i < 5; ++i) {
if (i == 3) continue;
sum += i;
}
check(sum == 7);
sum = 0;
j = 0;
for (; j < 5; ++j) {
if (j == 3) continue;
sum += j;
}
check(sum == 7);
sum = 0;
j = 0;
for (; j < 5;) {
if (j == 3) {
j++;
continue;
}
sum += j;
j++;
}
check(sum == 7);
sum = 0;
for (let i: Smi = 0;; ++i) {
if (i == 3) continue;
if (i == 5) break;
sum += i;
}
check(sum == 7);
sum = 0;
j = 0;
for (;;) {
if (j == 3) {
j++;
continue;
}
if (j == 5) break;
sum += j;
j++;
}
check(sum == 7);
j = 0;
try {
for (;;) {
if (++j == 10) goto Exit;
}
}
label Exit {
check(j == 10);
}
// Test if we can handle uninitialized values on the stack.
let _i: Smi;
for (let j: Smi = 0; j < 10; ++j) {
}
}
@export
macro TestSubtyping(x: Smi) {
const _foo: Object = x;
}
macro IncrementIfSmi<A: type>(x: A): A {
typeswitch (x) {
case (x: Smi): {
return x + 1;
}
case (o: A): {
return o;
}
}
}
type NumberOrFixedArray = Number | FixedArray;
macro TypeswitchExample(implicit context: Context)(x: NumberOrFixedArray):
int32 {
let result: int32 = 0;
typeswitch (IncrementIfSmi(x)) {
case (_x: FixedArray): {
result = result + 1;
}
case (Number): {
result = result + 2;
}
}
result = result * 10;
typeswitch (IncrementIfSmi(x)) {
case (x: Smi): {
result = result + Convert<int32>(x);
}
case (a: FixedArray): {
result = result + Convert<int32>(a.length);
}
case (_x: HeapNumber): {
result = result + 7;
}
}
return result;
}
@export
macro TestTypeswitch(implicit context: Context)() {
check(TypeswitchExample(FromConstexpr<Smi>(5)) == 26);
const a: FixedArray = AllocateZeroedFixedArray(3);
check(TypeswitchExample(a) == 13);
check(TypeswitchExample(FromConstexpr<Number>(0.5)) == 27);
}
@export
macro TestTypeswitchAsanLsanFailure(implicit context: Context)(obj: Object) {
typeswitch (obj) {
case (_o: Smi): {
}
case (_o: JSTypedArray): {
}
case (_o: JSReceiver): {
}
case (_o: HeapObject): {
}
}
}
macro ExampleGenericOverload<A: type>(o: Object): A {
return o;
}
macro ExampleGenericOverload<A: type>(o: Smi): A {
return o + 1;
}
@export
macro TestGenericOverload(implicit context: Context)() {
const xSmi: Smi = 5;
const xObject: Object = xSmi;
check(ExampleGenericOverload<Smi>(xSmi) == 6);
check(UnsafeCast<Smi>(ExampleGenericOverload<Object>(xObject)) == 5);
}
@export
macro TestEquality(implicit context: Context)() {
const notEqual: bool =
AllocateHeapNumberWithValue(0.5) != AllocateHeapNumberWithValue(0.5);
check(!notEqual);
const equal: bool =
AllocateHeapNumberWithValue(0.5) == AllocateHeapNumberWithValue(0.5);
check(equal);
}
macro BoolToBranch(x: bool): never
labels Taken, NotTaken {
if (x) {
goto Taken;
} else {
goto NotTaken;
}
}
@export
macro TestOrAnd1(x: bool, y: bool, z: bool): bool {
return BoolToBranch(x) || y && z ? true : false;
}
@export
macro TestOrAnd2(x: bool, y: bool, z: bool): bool {
return x || BoolToBranch(y) && z ? true : false;
}
@export
macro TestOrAnd3(x: bool, y: bool, z: bool): bool {
return x || y && BoolToBranch(z) ? true : false;
}
@export
macro TestAndOr1(x: bool, y: bool, z: bool): bool {
return BoolToBranch(x) && y || z ? true : false;
}
@export
macro TestAndOr2(x: bool, y: bool, z: bool): bool {
return x && BoolToBranch(y) || z ? true : false;
}
@export
macro TestAndOr3(x: bool, y: bool, z: bool): bool {
return x && y || BoolToBranch(z) ? true : false;
}
@export
macro TestLogicalOperators() {
check(TestAndOr1(true, true, true));
check(TestAndOr2(true, true, true));
check(TestAndOr3(true, true, true));
check(TestAndOr1(true, true, false));
check(TestAndOr2(true, true, false));
check(TestAndOr3(true, true, false));
check(TestAndOr1(true, false, true));
check(TestAndOr2(true, false, true));
check(TestAndOr3(true, false, true));
check(!TestAndOr1(true, false, false));
check(!TestAndOr2(true, false, false));
check(!TestAndOr3(true, false, false));
check(TestAndOr1(false, true, true));
check(TestAndOr2(false, true, true));
check(TestAndOr3(false, true, true));
check(!TestAndOr1(false, true, false));
check(!TestAndOr2(false, true, false));
check(!TestAndOr3(false, true, false));
check(TestAndOr1(false, false, true));
check(TestAndOr2(false, false, true));
check(TestAndOr3(false, false, true));
check(!TestAndOr1(false, false, false));
check(!TestAndOr2(false, false, false));
check(!TestAndOr3(false, false, false));
check(TestOrAnd1(true, true, true));
check(TestOrAnd2(true, true, true));
check(TestOrAnd3(true, true, true));
check(TestOrAnd1(true, true, false));
check(TestOrAnd2(true, true, false));
check(TestOrAnd3(true, true, false));
check(TestOrAnd1(true, false, true));
check(TestOrAnd2(true, false, true));
check(TestOrAnd3(true, false, true));
check(TestOrAnd1(true, false, false));
check(TestOrAnd2(true, false, false));
check(TestOrAnd3(true, false, false));
check(TestOrAnd1(false, true, true));
check(TestOrAnd2(false, true, true));
check(TestOrAnd3(false, true, true));
check(!TestOrAnd1(false, true, false));
check(!TestOrAnd2(false, true, false));
check(!TestOrAnd3(false, true, false));
check(!TestOrAnd1(false, false, true));
check(!TestOrAnd2(false, false, true));
check(!TestOrAnd3(false, false, true));
check(!TestOrAnd1(false, false, false));
check(!TestOrAnd2(false, false, false));
check(!TestOrAnd3(false, false, false));
}
@export
macro TestCall(i: Smi): Smi labels A {
if (i < 5) return i;
goto A;
}
@export
macro TestOtherwiseWithCode1() {
let v: Smi = 0;
let s: Smi = 1;
try {
TestCall(10) otherwise goto B(++s);
}
label B(v1: Smi) {
v = v1;
}
assert(v == 2);
}
@export
macro TestOtherwiseWithCode2() {
let s: Smi = 0;
for (let i: Smi = 0; i < 10; ++i) {
TestCall(i) otherwise break;
++s;
}
assert(s == 5);
}
@export
macro TestOtherwiseWithCode3() {
let s: Smi = 0;
for (let i: Smi = 0; i < 10; ++i) {
s += TestCall(i) otherwise break;
}
assert(s == 10);
}
@export
macro TestForwardLabel() {
try {
goto A;
}
label A {
goto B(5);
}
label B(b: Smi) {
assert(b == 5);
}
}
@export
macro TestQualifiedAccess(implicit context: Context)() {
const s: Smi = 0;
check(!array::IsJSArray(s));
}
@export
macro TestCatch1(implicit context: Context)(): Smi {
let r: Smi = 0;
try {
ThrowTypeError(kInvalidArrayLength);
} catch (_e) {
r = 1;
return r;
}
}
@export
macro TestCatch2Wrapper(implicit context: Context)(): never {
ThrowTypeError(kInvalidArrayLength);
}
@export
macro TestCatch2(implicit context: Context)(): Smi {
let r: Smi = 0;
try {
TestCatch2Wrapper();
} catch (_e) {
r = 2;
return r;
}
}
@export
macro TestCatch3WrapperWithLabel(implicit context: Context)():
never labels _Abort {
ThrowTypeError(kInvalidArrayLength);
}
@export
macro TestCatch3(implicit context: Context)(): Smi {
let r: Smi = 0;
try {
TestCatch3WrapperWithLabel() otherwise Abort;
}
label Abort {
return -1;
}
catch (_e) {
r = 2;
return r;
}
}
// This test doesn't actually test the functionality of iterators,
// it's only purpose is to make sure tha the CSA macros in the
// IteratorBuiltinsAssembler match the signatures provided in
// iterator.tq.
@export
macro TestIterator(implicit context: Context)(o: Object, map: Map) {
try {
const t1: Object = iterator::GetIteratorMethod(o);
const t2: iterator::IteratorRecord = iterator::GetIterator(o);
const _t3: Object = iterator::IteratorStep(t2) otherwise Fail;
const t4: Object = iterator::IteratorStep(t2, map) otherwise Fail;
const t5: Object = iterator::IteratorValue(t4);
const _t6: Object = iterator::IteratorValue(t4, map);
const _t7: JSArray = iterator::IterableToList(t1, t1);
iterator::IteratorCloseOnException(t2, t5);
}
label Fail {}
}
@export
macro TestFrame1(implicit context: Context)() {
const f: Frame = LoadFramePointer();
const frameType: FrameType =
Cast<FrameType>(f.context_or_frame_type) otherwise unreachable;
assert(frameType == STUB_FRAME);
assert(f.caller == LoadParentFramePointer());
typeswitch (f) {
case (_f: StandardFrame): {
unreachable;
}
case (_f: ArgumentsAdaptorFrame): {
unreachable;
}
case (_f: StubFrame): {
}
}
}
@export
macro TestNew(implicit context: Context)() {
const f: JSArray = NewJSArray();
check(f.IsEmpty());
f.length = 0;
}
struct TestInner {
SetX(newValue: int32) {
this.x = newValue;
}
GetX(): int32 {
return this.x;
}
x: int32;
y: int32;
}
struct TestOuter {
a: int32;
b: TestInner;
c: int32;
}
@export
macro TestStructConstructor(implicit context: Context)() {
// Test default constructor
let a: TestOuter = TestOuter{a: 5, b: TestInner{x: 6, y: 7}, c: 8};
check(a.a == 5);
check(a.b.x == 6);
check(a.b.y == 7);
check(a.c == 8);
a.b.x = 1;
check(a.b.x == 1);
a.b.SetX(2);
check(a.b.x == 2);
check(a.b.GetX() == 2);
}
class InternalClass {
Flip() labels NotASmi {
const tmp = Cast<Smi>(this.b) otherwise NotASmi;
this.b = this.a;
this.a = tmp;
}
a: Smi;
b: Number;
}
macro NewInternalClass(x: Smi): InternalClass {
return new InternalClass{a: x, b: x + 1};
}
@export
macro TestInternalClass(implicit context: Context)() {
const o = NewInternalClass(5);
o.Flip() otherwise unreachable;
check(o.a == 6);
check(o.b == 5);
}
struct StructWithConst {
TestMethod1(): int32 {
return this.b;
}
TestMethod2(): Object {
return this.a;
}
a: Object;
const b: int32;
}
@export
macro TestConstInStructs() {
const x = StructWithConst{a: Null, b: 1};
let y = StructWithConst{a: Null, b: 1};
y.a = Undefined;
const _copy = x;
check(x.TestMethod1() == 1);
check(x.TestMethod2() == Null);
}
struct TestIterator {
Next(): Object labels NoMore {
if (this.count-- == 0) goto NoMore;
return TheHole;
}
count: Smi;
}
@export
macro TestNewFixedArrayFromSpread(implicit context: Context)(): Object {
let i = TestIterator{count: 5};
return new FixedArray{map: kFixedArrayMap, length: 5, objects: ...i};
}
class SmiPair {
GetA():&Smi {
return & this.a;
}
a: Smi;
b: Smi;
}
macro Swap<T: type>(a:&T, b:&T) {
const tmp = * a;
* a = * b;
* b = tmp;
}
@export
macro TestReferences() {
const array = new SmiPair{a: 7, b: 2};
const ref:&Smi = & array.a;
* ref = 3 + * ref;
-- * ref;
Swap(& array.b, array.GetA());
check(array.a == 2);
check(array.b == 9);
}
@export
macro TestStaticAssert() {
StaticAssert(1 + 2 == 3);
}
class SmiBox {
value: Smi;
unrelated: Smi;
}
builtin NewSmiBox(implicit context: Context)(value: Smi): SmiBox {
return new SmiBox{value, unrelated: 0};
}
@export
macro TestLoadEliminationFixed(implicit context: Context)() {
const box = NewSmiBox(123);
const v1 = box.value;
box.unrelated = 999;
const v2 = (box.unrelated == 0) ? box.value : box.value;
StaticAssert(WordEqual(v1, v2));
box.value = 11;
const v3 = box.value;
const eleven: Smi = 11;
StaticAssert(WordEqual(v3, eleven));
}
@export
macro TestLoadEliminationVariable(implicit context: Context)() {
const a = UnsafeCast<FixedArray>(kEmptyFixedArray);
const box = NewSmiBox(1);
const v1 = a.objects[box.value];
const u1 = a.objects[box.value + 2];
const v2 = a.objects[box.value];
const u2 = a.objects[box.value + 2];
StaticAssert(WordEqual(v1, v2));
StaticAssert(WordEqual(u1, u2));
}
@export
macro TestRedundantArrayElementCheck(implicit context: Context)(): Smi {
const a = kEmptyFixedArray;
for (let i: Smi = 0; i < a.length; i++) {
if (a.objects[i] == TheHole) {
if (a.objects[i] == TheHole) {
return -1;
} else {
StaticAssert(false);
}
}
}
return 1;
}
@export
macro TestRedundantSmiCheck(implicit context: Context)(): Smi {
const a = kEmptyFixedArray;
const x = a.objects[1];
typeswitch (x) {
case (Smi): {
Cast<Smi>(x) otherwise VerifiedUnreachable();
return -1;
}
case (Object): {
}
}
return 1;
}
}