blob: 8661a5eb5c2bdfdd7a4438b5a9e22fca167a5ebd [file] [log] [blame]
// Copyright 2015 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.
#include "src/code-factory.h"
#include "src/compiler/code-assembler.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/opcodes.h"
#include "src/isolate.h"
#include "src/objects-inl.h"
#include "test/cctest/compiler/code-assembler-tester.h"
#include "test/cctest/compiler/function-tester.h"
namespace v8 {
namespace internal {
namespace compiler {
namespace {
typedef CodeAssemblerLabel Label;
typedef CodeAssemblerVariable Variable;
Node* SmiTag(CodeAssembler& m, Node* value) {
int32_t constant_value;
if (m.ToInt32Constant(value, constant_value) &&
Smi::IsValid(constant_value)) {
return m.SmiConstant(Smi::FromInt(constant_value));
}
return m.WordShl(value, m.IntPtrConstant(kSmiShiftSize + kSmiTagSize));
}
Node* UndefinedConstant(CodeAssembler& m) {
return m.LoadRoot(Heap::kUndefinedValueRootIndex);
}
Node* SmiFromWord32(CodeAssembler& m, Node* value) {
value = m.ChangeInt32ToIntPtr(value);
return m.BitcastWordToTaggedSigned(
m.WordShl(value, kSmiShiftSize + kSmiTagSize));
}
Node* LoadObjectField(CodeAssembler& m, Node* object, int offset,
MachineType rep = MachineType::AnyTagged()) {
return m.Load(rep, object, m.IntPtrConstant(offset - kHeapObjectTag));
}
Node* LoadMap(CodeAssembler& m, Node* object) {
return LoadObjectField(m, object, JSObject::kMapOffset);
}
} // namespace
TEST(SimpleSmiReturn) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
m.Return(SmiTag(m, m.Int32Constant(37)));
FunctionTester ft(asm_tester.GenerateCode());
CHECK_EQ(37, ft.CallChecked<Smi>()->value());
}
TEST(SimpleIntPtrReturn) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
int test;
m.Return(m.BitcastWordToTagged(
m.IntPtrConstant(reinterpret_cast<intptr_t>(&test))));
FunctionTester ft(asm_tester.GenerateCode());
MaybeHandle<Object> result = ft.Call();
CHECK_EQ(reinterpret_cast<intptr_t>(&test),
reinterpret_cast<intptr_t>(*result.ToHandleChecked()));
}
TEST(SimpleDoubleReturn) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
m.Return(m.NumberConstant(0.5));
FunctionTester ft(asm_tester.GenerateCode());
CHECK_EQ(0.5, ft.CallChecked<HeapNumber>()->value());
}
TEST(SimpleCallRuntime1Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Node* context = m.HeapConstant(Handle<Context>(isolate->native_context()));
Node* b = SmiTag(m, m.Int32Constant(0));
m.Return(m.CallRuntime(Runtime::kNumberToSmi, context, b));
FunctionTester ft(asm_tester.GenerateCode());
CHECK_EQ(0, ft.CallChecked<Smi>()->value());
}
TEST(SimpleTailCallRuntime1Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Node* context = m.HeapConstant(Handle<Context>(isolate->native_context()));
Node* b = SmiTag(m, m.Int32Constant(0));
m.TailCallRuntime(Runtime::kNumberToSmi, context, b);
FunctionTester ft(asm_tester.GenerateCode());
CHECK_EQ(0, ft.CallChecked<Smi>()->value());
}
TEST(SimpleCallRuntime2Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Node* context = m.HeapConstant(Handle<Context>(isolate->native_context()));
Node* a = SmiTag(m, m.Int32Constant(2));
Node* b = SmiTag(m, m.Int32Constant(4));
m.Return(m.CallRuntime(Runtime::kAdd, context, a, b));
FunctionTester ft(asm_tester.GenerateCode());
CHECK_EQ(6, ft.CallChecked<Smi>()->value());
}
TEST(SimpleTailCallRuntime2Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Node* context = m.HeapConstant(Handle<Context>(isolate->native_context()));
Node* a = SmiTag(m, m.Int32Constant(2));
Node* b = SmiTag(m, m.Int32Constant(4));
m.TailCallRuntime(Runtime::kAdd, context, a, b);
FunctionTester ft(asm_tester.GenerateCode());
CHECK_EQ(6, ft.CallChecked<Smi>()->value());
}
namespace {
Handle<JSFunction> CreateSumAllArgumentsFunction(FunctionTester& ft) {
const char* source =
"(function() {\n"
" var sum = 0 + this;\n"
" for (var i = 0; i < arguments.length; i++) {\n"
" sum += arguments[i];\n"
" }\n"
" return sum;\n"
"})";
return ft.NewFunction(source);
}
} // namespace
TEST(SimpleCallJSFunction0Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
const int kNumParams = 1;
CodeAssemblerTester asm_tester(isolate, kNumParams);
CodeAssembler m(asm_tester.state());
{
Node* function = m.Parameter(0);
Node* context = m.Parameter(kNumParams + 2);
Node* receiver = SmiTag(m, m.Int32Constant(42));
Callable callable = CodeFactory::Call(isolate);
Node* result = m.CallJS(callable, context, function, receiver);
m.Return(result);
}
FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
Handle<JSFunction> sum = CreateSumAllArgumentsFunction(ft);
MaybeHandle<Object> result = ft.Call(sum);
CHECK_EQ(Smi::FromInt(42), *result.ToHandleChecked());
}
TEST(SimpleCallJSFunction1Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
const int kNumParams = 2;
CodeAssemblerTester asm_tester(isolate, kNumParams);
CodeAssembler m(asm_tester.state());
{
Node* function = m.Parameter(0);
Node* context = m.Parameter(1);
Node* receiver = SmiTag(m, m.Int32Constant(42));
Node* a = SmiTag(m, m.Int32Constant(13));
Callable callable = CodeFactory::Call(isolate);
Node* result = m.CallJS(callable, context, function, receiver, a);
m.Return(result);
}
FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
Handle<JSFunction> sum = CreateSumAllArgumentsFunction(ft);
MaybeHandle<Object> result = ft.Call(sum);
CHECK_EQ(Smi::FromInt(55), *result.ToHandleChecked());
}
TEST(SimpleCallJSFunction2Arg) {
Isolate* isolate(CcTest::InitIsolateOnce());
const int kNumParams = 2;
CodeAssemblerTester asm_tester(isolate, kNumParams);
CodeAssembler m(asm_tester.state());
{
Node* function = m.Parameter(0);
Node* context = m.Parameter(1);
Node* receiver = SmiTag(m, m.Int32Constant(42));
Node* a = SmiTag(m, m.Int32Constant(13));
Node* b = SmiTag(m, m.Int32Constant(153));
Callable callable = CodeFactory::Call(isolate);
Node* result = m.CallJS(callable, context, function, receiver, a, b);
m.Return(result);
}
FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
Handle<JSFunction> sum = CreateSumAllArgumentsFunction(ft);
MaybeHandle<Object> result = ft.Call(sum);
CHECK_EQ(Smi::FromInt(208), *result.ToHandleChecked());
}
TEST(VariableMerge1) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Variable var1(&m, MachineRepresentation::kTagged);
Label l1(&m), l2(&m), merge(&m);
Node* temp = m.Int32Constant(0);
var1.Bind(temp);
m.Branch(m.Int32Constant(1), &l1, &l2);
m.Bind(&l1);
CHECK_EQ(var1.value(), temp);
m.Goto(&merge);
m.Bind(&l2);
CHECK_EQ(var1.value(), temp);
m.Goto(&merge);
m.Bind(&merge);
CHECK_EQ(var1.value(), temp);
}
TEST(VariableMerge2) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Variable var1(&m, MachineRepresentation::kTagged);
Label l1(&m), l2(&m), merge(&m);
Node* temp = m.Int32Constant(0);
var1.Bind(temp);
m.Branch(m.Int32Constant(1), &l1, &l2);
m.Bind(&l1);
CHECK_EQ(var1.value(), temp);
m.Goto(&merge);
m.Bind(&l2);
Node* temp2 = m.Int32Constant(2);
var1.Bind(temp2);
CHECK_EQ(var1.value(), temp2);
m.Goto(&merge);
m.Bind(&merge);
CHECK_NE(var1.value(), temp);
}
TEST(VariableMerge3) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Variable var1(&m, MachineRepresentation::kTagged);
Variable var2(&m, MachineRepresentation::kTagged);
Label l1(&m), l2(&m), merge(&m);
Node* temp = m.Int32Constant(0);
var1.Bind(temp);
var2.Bind(temp);
m.Branch(m.Int32Constant(1), &l1, &l2);
m.Bind(&l1);
CHECK_EQ(var1.value(), temp);
m.Goto(&merge);
m.Bind(&l2);
Node* temp2 = m.Int32Constant(2);
var1.Bind(temp2);
CHECK_EQ(var1.value(), temp2);
m.Goto(&merge);
m.Bind(&merge);
CHECK_NE(var1.value(), temp);
CHECK_NE(var1.value(), temp2);
CHECK_EQ(var2.value(), temp);
}
TEST(VariableMergeBindFirst) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Variable var1(&m, MachineRepresentation::kTagged);
Label l1(&m), l2(&m), merge(&m, &var1), end(&m);
Node* temp = m.Int32Constant(0);
var1.Bind(temp);
m.Branch(m.Int32Constant(1), &l1, &l2);
m.Bind(&l1);
CHECK_EQ(var1.value(), temp);
m.Goto(&merge);
m.Bind(&merge);
CHECK(var1.value() != temp);
CHECK_NOT_NULL(var1.value());
m.Goto(&end);
m.Bind(&l2);
Node* temp2 = m.Int32Constant(2);
var1.Bind(temp2);
CHECK_EQ(var1.value(), temp2);
m.Goto(&merge);
m.Bind(&end);
CHECK(var1.value() != temp);
CHECK_NOT_NULL(var1.value());
}
TEST(VariableMergeSwitch) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Variable var1(&m, MachineRepresentation::kTagged);
Label l1(&m), l2(&m), default_label(&m);
Label* labels[] = {&l1, &l2};
int32_t values[] = {1, 2};
Node* temp1 = m.Int32Constant(0);
var1.Bind(temp1);
m.Switch(m.Int32Constant(2), &default_label, values, labels, 2);
m.Bind(&l1);
CHECK_EQ(temp1, var1.value());
m.Return(temp1);
m.Bind(&l2);
CHECK_EQ(temp1, var1.value());
Node* temp2 = m.Int32Constant(7);
var1.Bind(temp2);
m.Goto(&default_label);
m.Bind(&default_label);
CHECK_EQ(IrOpcode::kPhi, var1.value()->opcode());
CHECK_EQ(2, var1.value()->op()->ValueInputCount());
CHECK_EQ(temp1, NodeProperties::GetValueInput(var1.value(), 0));
CHECK_EQ(temp2, NodeProperties::GetValueInput(var1.value(), 1));
m.Return(temp1);
}
TEST(SplitEdgeBranchMerge) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Label l1(&m), merge(&m);
m.Branch(m.Int32Constant(1), &l1, &merge);
m.Bind(&l1);
m.Goto(&merge);
m.Bind(&merge);
USE(asm_tester.GenerateCode());
}
TEST(SplitEdgeSwitchMerge) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Label l1(&m), l2(&m), l3(&m), default_label(&m);
Label* labels[] = {&l1, &l2};
int32_t values[] = {1, 2};
m.Branch(m.Int32Constant(1), &l3, &l1);
m.Bind(&l3);
m.Switch(m.Int32Constant(2), &default_label, values, labels, 2);
m.Bind(&l1);
m.Goto(&l2);
m.Bind(&l2);
m.Goto(&default_label);
m.Bind(&default_label);
USE(asm_tester.GenerateCode());
}
TEST(TestToConstant) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
int32_t value32;
int64_t value64;
Node* a = m.Int32Constant(5);
CHECK(m.ToInt32Constant(a, value32));
CHECK(m.ToInt64Constant(a, value64));
a = m.Int64Constant(static_cast<int64_t>(1) << 32);
CHECK(!m.ToInt32Constant(a, value32));
CHECK(m.ToInt64Constant(a, value64));
a = m.Int64Constant(13);
CHECK(m.ToInt32Constant(a, value32));
CHECK(m.ToInt64Constant(a, value64));
a = UndefinedConstant(m);
CHECK(!m.ToInt32Constant(a, value32));
CHECK(!m.ToInt64Constant(a, value64));
a = UndefinedConstant(m);
CHECK(!m.ToInt32Constant(a, value32));
CHECK(!m.ToInt64Constant(a, value64));
}
TEST(DeferredCodePhiHints) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Label block1(&m, Label::kDeferred);
m.Goto(&block1);
m.Bind(&block1);
{
Variable var_object(&m, MachineRepresentation::kTagged);
Label loop(&m, &var_object);
var_object.Bind(m.SmiConstant(0));
m.Goto(&loop);
m.Bind(&loop);
{
Node* map = LoadMap(m, var_object.value());
var_object.Bind(map);
m.Goto(&loop);
}
}
CHECK(!asm_tester.GenerateCode().is_null());
}
TEST(TestOutOfScopeVariable) {
Isolate* isolate(CcTest::InitIsolateOnce());
CodeAssemblerTester asm_tester(isolate);
CodeAssembler m(asm_tester.state());
Label block1(&m);
Label block2(&m);
Label block3(&m);
Label block4(&m);
m.Branch(m.WordEqual(m.UncheckedCast<IntPtrT>(m.Parameter(0)),
m.IntPtrConstant(0)),
&block1, &block4);
m.Bind(&block4);
{
Variable var_object(&m, MachineRepresentation::kTagged);
m.Branch(m.WordEqual(m.UncheckedCast<IntPtrT>(m.Parameter(0)),
m.IntPtrConstant(0)),
&block2, &block3);
m.Bind(&block2);
var_object.Bind(m.IntPtrConstant(55));
m.Goto(&block1);
m.Bind(&block3);
var_object.Bind(m.IntPtrConstant(66));
m.Goto(&block1);
}
m.Bind(&block1);
CHECK(!asm_tester.GenerateCode().is_null());
}
TEST(GotoIfException) {
Isolate* isolate(CcTest::InitIsolateOnce());
const int kNumParams = 1;
CodeAssemblerTester asm_tester(isolate, kNumParams);
CodeAssembler m(asm_tester.state());
Node* context = m.HeapConstant(Handle<Context>(isolate->native_context()));
Node* to_string_tag =
m.HeapConstant(isolate->factory()->to_string_tag_symbol());
Variable exception(&m, MachineRepresentation::kTagged);
Label exception_handler(&m);
Callable to_string = Builtins::CallableFor(isolate, Builtins::kToString);
Node* string = m.CallStub(to_string, context, to_string_tag);
m.GotoIfException(string, &exception_handler, &exception);
m.Return(string);
m.Bind(&exception_handler);
m.Return(exception.value());
FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
Handle<Object> result = ft.Call().ToHandleChecked();
// Should be a TypeError.
CHECK(result->IsJSObject());
Handle<Object> constructor =
Object::GetPropertyOrElement(result,
isolate->factory()->constructor_string())
.ToHandleChecked();
CHECK(constructor->SameValue(*isolate->type_error_function()));
}
TEST(GotoIfExceptionMultiple) {
Isolate* isolate(CcTest::InitIsolateOnce());
const int kNumParams = 4; // receiver, first, second, third
CodeAssemblerTester asm_tester(isolate, kNumParams);
CodeAssembler m(asm_tester.state());
Node* context = m.HeapConstant(Handle<Context>(isolate->native_context()));
Node* first_value = m.Parameter(0);
Node* second_value = m.Parameter(1);
Node* third_value = m.Parameter(2);
Label exception_handler1(&m);
Label exception_handler2(&m);
Label exception_handler3(&m);
Variable return_value(&m, MachineRepresentation::kWord32);
Variable error(&m, MachineRepresentation::kTagged);
return_value.Bind(m.Int32Constant(0));
// try { return ToString(param1) } catch (e) { ... }
Callable to_string = Builtins::CallableFor(isolate, Builtins::kToString);
Node* string = m.CallStub(to_string, context, first_value);
m.GotoIfException(string, &exception_handler1, &error);
m.Return(string);
// try { ToString(param2); return 7 } catch (e) { ... }
m.Bind(&exception_handler1);
return_value.Bind(m.Int32Constant(7));
error.Bind(UndefinedConstant(m));
string = m.CallStub(to_string, context, second_value);
m.GotoIfException(string, &exception_handler2, &error);
m.Return(SmiFromWord32(m, return_value.value()));
// try { ToString(param3); return 7 & ~2; } catch (e) { return e; }
m.Bind(&exception_handler2);
// Return returnValue & ~2
error.Bind(UndefinedConstant(m));
string = m.CallStub(to_string, context, third_value);
m.GotoIfException(string, &exception_handler3, &error);
m.Return(SmiFromWord32(
m, m.Word32And(return_value.value(),
m.Word32Xor(m.Int32Constant(2), m.Int32Constant(-1)))));
m.Bind(&exception_handler3);
m.Return(error.value());
FunctionTester ft(asm_tester.GenerateCode(), kNumParams);
Handle<Object> result;
// First handler does not throw, returns result of first value.
result = ft.Call(isolate->factory()->undefined_value(),
isolate->factory()->to_string_tag_symbol())
.ToHandleChecked();
CHECK(String::cast(*result)->IsOneByteEqualTo(OneByteVector("undefined")));
// First handler returns a number.
result = ft.Call(isolate->factory()->to_string_tag_symbol(),
isolate->factory()->undefined_value())
.ToHandleChecked();
CHECK_EQ(7, Smi::ToInt(*result));
// First handler throws, second handler returns a number.
result = ft.Call(isolate->factory()->to_string_tag_symbol(),
isolate->factory()->to_primitive_symbol())
.ToHandleChecked();
CHECK_EQ(7 & ~2, Smi::ToInt(*result));
// First handler throws, second handler throws, third handler returns thrown
// value.
result = ft.Call(isolate->factory()->to_string_tag_symbol(),
isolate->factory()->to_primitive_symbol(),
isolate->factory()->unscopables_symbol())
.ToHandleChecked();
// Should be a TypeError.
CHECK(result->IsJSObject());
Handle<Object> constructor =
Object::GetPropertyOrElement(result,
isolate->factory()->constructor_string())
.ToHandleChecked();
CHECK(constructor->SameValue(*isolate->type_error_function()));
}
} // namespace compiler
} // namespace internal
} // namespace v8