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// 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/v8.h"
#include "src/execution.h"
#include "src/handles.h"
#include "src/interpreter/bytecode-array-builder.h"
#include "src/interpreter/interpreter.h"
#include "test/cctest/cctest.h"
namespace v8 {
namespace internal {
namespace interpreter {
class InterpreterCallable {
public:
InterpreterCallable(Isolate* isolate, Handle<JSFunction> function)
: isolate_(isolate), function_(function) {}
virtual ~InterpreterCallable() {}
MaybeHandle<Object> operator()() {
return Execution::Call(isolate_, function_,
isolate_->factory()->undefined_value(), 0, nullptr,
false);
}
private:
Isolate* isolate_;
Handle<JSFunction> function_;
};
class InterpreterTester {
public:
InterpreterTester(Isolate* isolate, Handle<BytecodeArray> bytecode)
: isolate_(isolate), function_(GetBytecodeFunction(isolate, bytecode)) {
i::FLAG_ignition = true;
// Ensure handler table is generated.
isolate->interpreter()->Initialize();
}
virtual ~InterpreterTester() {}
InterpreterCallable GetCallable() {
return InterpreterCallable(isolate_, function_);
}
private:
Isolate* isolate_;
Handle<JSFunction> function_;
static Handle<JSFunction> GetBytecodeFunction(
Isolate* isolate, Handle<BytecodeArray> bytecode_array) {
Handle<JSFunction> function = v8::Utils::OpenHandle(
*v8::Handle<v8::Function>::Cast(CompileRun("(function(){})")));
function->ReplaceCode(*isolate->builtins()->InterpreterEntryTrampoline());
function->shared()->set_function_data(*bytecode_array);
return function;
}
DISALLOW_COPY_AND_ASSIGN(InterpreterTester);
};
} // namespace interpreter
} // namespace internal
} // namespace v8
using v8::internal::BytecodeArray;
using v8::internal::Handle;
using v8::internal::Object;
using v8::internal::Smi;
using namespace v8::internal::interpreter;
TEST(TestInterpreterReturn) {
InitializedHandleScope handles;
Handle<Object> undefined_value =
handles.main_isolate()->factory()->undefined_value();
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(undefined_value));
}
TEST(TestInterpreterLoadUndefined) {
InitializedHandleScope handles;
Handle<Object> undefined_value =
handles.main_isolate()->factory()->undefined_value();
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.LoadUndefined().Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(undefined_value));
}
TEST(TestInterpreterLoadNull) {
InitializedHandleScope handles;
Handle<Object> null_value = handles.main_isolate()->factory()->null_value();
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.LoadNull().Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(null_value));
}
TEST(TestInterpreterLoadTheHole) {
InitializedHandleScope handles;
Handle<Object> the_hole_value =
handles.main_isolate()->factory()->the_hole_value();
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.LoadTheHole().Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(the_hole_value));
}
TEST(TestInterpreterLoadTrue) {
InitializedHandleScope handles;
Handle<Object> true_value = handles.main_isolate()->factory()->true_value();
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.LoadTrue().Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(true_value));
}
TEST(TestInterpreterLoadFalse) {
InitializedHandleScope handles;
Handle<Object> false_value = handles.main_isolate()->factory()->false_value();
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.LoadFalse().Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(false_value));
}
TEST(TestInterpreterLoadLiteral) {
InitializedHandleScope handles;
for (int i = -128; i < 128; i++) {
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(0);
builder.LoadLiteral(Smi::FromInt(i)).Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK_EQ(Smi::cast(*return_val), Smi::FromInt(i));
}
}
TEST(TestInterpreterLoadStoreRegisters) {
InitializedHandleScope handles;
Handle<Object> true_value = handles.main_isolate()->factory()->true_value();
for (int i = 0; i <= Register::kMaxRegisterIndex; i++) {
BytecodeArrayBuilder builder(handles.main_isolate());
builder.set_locals_count(i + 1);
Register reg(i);
builder.LoadTrue()
.StoreAccumulatorInRegister(reg)
.LoadFalse()
.LoadAccumulatorWithRegister(reg)
.Return();
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray();
InterpreterTester tester(handles.main_isolate(), bytecode_array);
InterpreterCallable callable(tester.GetCallable());
Handle<Object> return_val = callable().ToHandleChecked();
CHECK(return_val.is_identical_to(true_value));
}
}
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