d24ce605c9
The InterpreterTester class cobbles together a JSFunction from a manually created bytecode and feedback vector. However it's fragile against design changes in the way literal arrays and feedback vectors are handled. It's better to let it hand in a feedback vector metadata object, and allow the system to create the vector from that. BUG=v8:5456 Review-Url: https://codereview.chromium.org/2652893010 Cr-Commit-Position: refs/heads/master@{#42684}
136 lines
4.4 KiB
C++
136 lines
4.4 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/v8.h"
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#include "src/api.h"
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#include "src/execution.h"
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#include "src/handles.h"
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#include "src/interpreter/bytecode-array-builder.h"
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#include "src/interpreter/interpreter.h"
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#include "test/cctest/cctest.h"
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#include "test/cctest/test-feedback-vector.h"
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namespace v8 {
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namespace internal {
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namespace interpreter {
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MaybeHandle<Object> CallInterpreter(Isolate* isolate,
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Handle<JSFunction> function);
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template <class... A>
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static MaybeHandle<Object> CallInterpreter(Isolate* isolate,
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Handle<JSFunction> function,
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A... args) {
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Handle<Object> argv[] = {args...};
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return Execution::Call(isolate, function,
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isolate->factory()->undefined_value(), sizeof...(args),
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argv);
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}
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template <class... A>
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class InterpreterCallable {
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public:
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InterpreterCallable(Isolate* isolate, Handle<JSFunction> function)
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: isolate_(isolate), function_(function) {}
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virtual ~InterpreterCallable() {}
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MaybeHandle<Object> operator()(A... args) {
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return CallInterpreter(isolate_, function_, args...);
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}
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TypeFeedbackVector* vector() const { return function_->feedback_vector(); }
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private:
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Isolate* isolate_;
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Handle<JSFunction> function_;
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};
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namespace {
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const char kFunctionName[] = "f";
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} // namespace
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class InterpreterTester {
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public:
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InterpreterTester(Isolate* isolate, const char* source,
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MaybeHandle<BytecodeArray> bytecode,
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MaybeHandle<TypeFeedbackMetadata> feedback_metadata,
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const char* filter);
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InterpreterTester(Isolate* isolate, Handle<BytecodeArray> bytecode,
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MaybeHandle<TypeFeedbackMetadata> feedback_metadata =
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MaybeHandle<TypeFeedbackMetadata>(),
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const char* filter = kFunctionName);
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InterpreterTester(Isolate* isolate, const char* source,
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const char* filter = kFunctionName);
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virtual ~InterpreterTester();
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template <class... A>
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InterpreterCallable<A...> GetCallable() {
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return InterpreterCallable<A...>(isolate_, GetBytecodeFunction<A...>());
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}
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Local<Message> CheckThrowsReturnMessage();
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static Handle<Object> NewObject(const char* script);
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static Handle<String> GetName(Isolate* isolate, const char* name);
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static std::string SourceForBody(const char* body);
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static std::string function_name();
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private:
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Isolate* isolate_;
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const char* source_;
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MaybeHandle<BytecodeArray> bytecode_;
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MaybeHandle<TypeFeedbackMetadata> feedback_metadata_;
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template <class... A>
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Handle<JSFunction> GetBytecodeFunction() {
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Handle<JSFunction> function;
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if (source_) {
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CompileRun(source_);
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v8::Local<v8::Context> context =
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v8::Isolate::GetCurrent()->GetCurrentContext();
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Local<Function> api_function =
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Local<Function>::Cast(CcTest::global()
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->Get(context, v8_str(kFunctionName))
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.ToLocalChecked());
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function = Handle<JSFunction>::cast(v8::Utils::OpenHandle(*api_function));
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} else {
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int arg_count = sizeof...(A);
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std::string source("(function " + function_name() + "(");
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for (int i = 0; i < arg_count; i++) {
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source += i == 0 ? "a" : ", a";
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}
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source += "){})";
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function = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
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*v8::Local<v8::Function>::Cast(CompileRun(source.c_str()))));
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function->ReplaceCode(
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*isolate_->builtins()->InterpreterEntryTrampoline());
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}
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if (!bytecode_.is_null()) {
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function->shared()->set_function_data(*bytecode_.ToHandleChecked());
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}
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if (!feedback_metadata_.is_null()) {
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// TODO(mvstanton): The call to ClearOptimizedCodeMap can be removed
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// when we stop storing literals in the optimized code map (upcoming CL).
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function->shared()->ClearOptimizedCodeMap();
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function->shared()->set_feedback_metadata(
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*feedback_metadata_.ToHandleChecked());
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JSFunction::EnsureLiterals(function);
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}
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return function;
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}
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DISALLOW_COPY_AND_ASSIGN(InterpreterTester);
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};
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} // namespace interpreter
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} // namespace internal
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} // namespace v8
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