ce16c04dc3
... objects/intl-unittest. Bug: v8:12781 Change-Id: I225054f5d0071f28d5b4d1efe8698ce5d0276c0c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3725448 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: 王澳 <wangao.james@bytedance.com> Cr-Commit-Position: refs/heads/main@{#81534}
1424 lines
46 KiB
C++
1424 lines
46 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 <stdlib.h>
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#include <sstream>
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#include <utility>
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#include "src/api/api-inl.h"
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#include "src/init/v8.h"
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#include "src/objects/heap-number-inl.h"
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#include "src/objects/objects-inl.h"
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#include "test/unittests/test-utils.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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namespace test_inobject_slack_tracking {
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static const int kMaxInobjectProperties = JSObject::kMaxInObjectProperties;
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class InObjectSlackTrackingTest : public TestWithContext {
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public:
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template <typename T = Object>
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Handle<T> GetLexical(const char* name) {
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Factory* factory = i_isolate()->factory();
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Handle<String> str_name = factory->InternalizeUtf8String(name);
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Handle<ScriptContextTable> script_contexts(
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i_isolate()->native_context()->script_context_table(), i_isolate());
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VariableLookupResult lookup_result;
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if (script_contexts->Lookup(str_name, &lookup_result)) {
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Handle<Context> script_context = ScriptContextTable::GetContext(
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i_isolate(), script_contexts, lookup_result.context_index);
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Handle<Object> result(script_context->get(lookup_result.slot_index),
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i_isolate());
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return Handle<T>::cast(result);
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}
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return Handle<T>();
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}
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template <typename T = Object>
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Handle<T> GetLexical(const std::string& name) {
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return GetLexical<T>(name.c_str());
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}
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bool IsObjectShrinkable(JSObject obj) {
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Handle<Map> filler_map = i_isolate()->factory()->one_pointer_filler_map();
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int inobject_properties = obj.map().GetInObjectProperties();
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int unused = obj.map().UnusedPropertyFields();
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if (unused == 0) return false;
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Address packed_filler = MapWord::FromMap(*filler_map).ptr();
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for (int i = inobject_properties - unused; i < inobject_properties; i++) {
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if (packed_filler != GetFieldValue(obj, i).ptr()) {
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return false;
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}
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}
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return true;
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}
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template <typename T>
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Handle<T> GetGlobal(const char* name) {
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Handle<String> str_name =
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i_isolate()->factory()->InternalizeUtf8String(name);
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Handle<Object> value =
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Object::GetProperty(i_isolate(), i_isolate()->global_object(), str_name)
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.ToHandleChecked();
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return Handle<T>::cast(value);
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}
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static Object GetFieldValue(JSObject obj, int property_index) {
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FieldIndex index = FieldIndex::ForPropertyIndex(obj.map(), property_index);
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return obj.RawFastPropertyAt(index);
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}
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static double GetDoubleFieldValue(JSObject obj, FieldIndex field_index) {
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Object value = obj.RawFastPropertyAt(field_index);
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if (value.IsHeapNumber()) {
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return HeapNumber::cast(value).value();
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} else {
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return value.Number();
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}
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}
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static double GetDoubleFieldValue(JSObject obj, int property_index) {
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FieldIndex index = FieldIndex::ForPropertyIndex(obj.map(), property_index);
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return GetDoubleFieldValue(obj, index);
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}
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Local<Value> CompileRun(const char* source) {
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Local<v8::String> source_string =
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v8::String::NewFromUtf8(isolate(), source).ToLocalChecked();
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Local<v8::Script> script =
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v8::Script::Compile(context(), source_string).ToLocalChecked();
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return script->Run(context()).ToLocalChecked();
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}
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v8::Local<v8::Script> Compile(const char* source) {
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v8::Local<v8::Script> result;
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CHECK(v8::Script::Compile(
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context(),
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v8::String::NewFromUtf8(isolate(), source).ToLocalChecked())
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.ToLocal(&result));
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return result;
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}
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template <typename T>
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static Handle<T> OpenHandle(v8::Local<v8::Value> value) {
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Handle<Object> obj = v8::Utils::OpenHandle(*value);
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return Handle<T>::cast(obj);
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}
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inline v8::Local<v8::Value> Run(v8::Local<v8::Script> script) {
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v8::Local<v8::Value> result;
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if (script->Run(context()).ToLocal(&result)) {
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return result;
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}
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return v8::Local<v8::Value>();
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}
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template <typename T>
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inline Handle<T> RunI(v8::Local<v8::Script> script) {
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return OpenHandle<T>(Run(script));
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}
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template <typename T>
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inline Handle<T> CompileRunI(const char* script) {
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return OpenHandle<T>(CompileRun(script));
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}
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static std::string GetClassName(int class_index) {
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std::ostringstream os;
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os << "A" << class_index;
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return os.str();
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}
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v8::Local<v8::Script> GetNewObjectScript(const std::string& class_name) {
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std::ostringstream os;
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os << "new " << class_name << "();";
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return Compile(os.str().c_str());
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}
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// Test that in-object slack tracking works as expected for first |n| classes
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// in the hierarchy.
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// This test works only for if the total property count is less than maximum
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// in-object properties count.
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void TestClassHierarchy(const std::vector<int>& hierarchy_desc, int n) {
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int fields_count = 0;
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for (int cur_class = 0; cur_class < n; cur_class++) {
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std::string class_name = GetClassName(cur_class);
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int fields_count_at_current_level = hierarchy_desc[cur_class];
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fields_count += fields_count_at_current_level;
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// This test is not suitable for in-object properties count overflow case.
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CHECK_LT(fields_count, kMaxInobjectProperties);
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// Create |class_name| objects and check slack tracking.
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v8::Local<v8::Script> new_script = GetNewObjectScript(class_name);
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Handle<JSFunction> func = GetLexical<JSFunction>(class_name);
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Handle<JSObject> obj = RunI<JSObject>(new_script);
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CHECK(func->has_initial_map());
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Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
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// If the object is slow-mode already, bail out.
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if (obj->map().is_dictionary_map()) continue;
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// There must be at least some slack.
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CHECK_LT(fields_count, obj->map().GetInObjectProperties());
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// One instance was created.
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CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
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initial_map->construction_counter());
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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// Create several instances to complete the tracking.
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for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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Handle<JSObject> tmp = RunI<JSObject>(new_script);
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CHECK_EQ(initial_map->IsInobjectSlackTrackingInProgress(),
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IsObjectShrinkable(*tmp));
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if (!initial_map->IsInobjectSlackTrackingInProgress()) {
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// Turbofan can force completion of in-object slack tracking.
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break;
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}
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CHECK_EQ(Map::kSlackTrackingCounterStart - i - 1,
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initial_map->construction_counter());
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}
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CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
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CHECK(!IsObjectShrinkable(*obj));
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// No slack left.
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CHECK_EQ(fields_count, obj->map().GetInObjectProperties());
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}
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}
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// Creates class hierarchy of length matching the |hierarchy_desc| length and
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// with the number of fields at i'th level equal to |hierarchy_desc[i]|.
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void CreateClassHierarchy(const std::vector<int>& hierarchy_desc) {
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std::ostringstream os;
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os << "'use strict';\n\n";
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int n = static_cast<int>(hierarchy_desc.size());
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for (int cur_class = 0; cur_class < n; cur_class++) {
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os << "class A" << cur_class;
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if (cur_class > 0) {
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os << " extends A" << (cur_class - 1);
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}
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os << " {\n"
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" constructor(...args) {\n";
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if (cur_class > 0) {
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os << " super(...args);\n";
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}
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int fields_count = hierarchy_desc[cur_class];
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for (int k = 0; k < fields_count; k++) {
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os << " this.f" << cur_class << "_" << k << " = " << k << ";\n";
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}
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os << " }\n"
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"};\n\n";
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}
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CompileRun(os.str().c_str());
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}
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void CheckExpectedProperties(int expected, std::ostringstream& os) {
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Handle<HeapObject> obj = Handle<HeapObject>::cast(
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v8::Utils::OpenHandle(*CompileRun(os.str().c_str())));
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CHECK_EQ(expected, obj->map().GetInObjectProperties());
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}
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void TestSubclassBuiltin(const char* subclass_name,
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InstanceType instance_type, const char* builtin_name,
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const char* ctor_arguments = "",
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int builtin_properties_count = 0) {
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{
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std::ostringstream os;
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os << "'use strict';\n"
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"class "
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<< subclass_name << " extends " << builtin_name
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<< " {\n"
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" constructor(...args) {\n"
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" super(...args);\n"
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" this.a = 42;\n"
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" this.d = 4.2;\n"
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" this.o = this;\n"
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" }\n"
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"};\n";
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CompileRun(os.str().c_str());
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}
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Handle<JSFunction> func = GetLexical<JSFunction>(subclass_name);
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// Zero instances were created so far.
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CHECK(!func->has_initial_map());
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v8::Local<v8::Script> new_script;
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{
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std::ostringstream os;
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os << "new " << subclass_name << "(" << ctor_arguments << ");";
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new_script = Compile(os.str().c_str());
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}
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RunI<JSObject>(new_script);
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CHECK(func->has_initial_map());
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Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
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CHECK_EQ(instance_type, initial_map->instance_type());
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// One instance of a subclass created.
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CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
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initial_map->construction_counter());
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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// Create two instances in order to ensure that |obj|.o is a data field
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// in case of Function subclassing.
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Handle<JSObject> obj = RunI<JSObject>(new_script);
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// Two instances of a subclass created.
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CHECK_EQ(Map::kSlackTrackingCounterStart - 2,
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initial_map->construction_counter());
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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// There must be at least some slack.
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CHECK_LT(builtin_properties_count + 5, obj->map().GetInObjectProperties());
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CHECK_EQ(Smi::FromInt(42),
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GetFieldValue(*obj, builtin_properties_count + 0));
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CHECK_EQ(4.2, GetDoubleFieldValue(*obj, builtin_properties_count + 1));
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CHECK_EQ(*obj, GetFieldValue(*obj, builtin_properties_count + 2));
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CHECK(IsObjectShrinkable(*obj));
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// Create several subclass instances to complete the tracking.
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for (int i = 2; i < Map::kGenerousAllocationCount; i++) {
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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Handle<JSObject> tmp = RunI<JSObject>(new_script);
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CHECK_EQ(initial_map->IsInobjectSlackTrackingInProgress(),
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IsObjectShrinkable(*tmp));
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}
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CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
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CHECK(!IsObjectShrinkable(*obj));
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// No slack left.
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CHECK_EQ(builtin_properties_count + 3, obj->map().GetInObjectProperties());
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CHECK_EQ(instance_type, obj->map().instance_type());
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}
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void TestSubclassChain(const std::vector<int>& hierarchy_desc) {
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// Avoid eventual completion of in-object slack tracking.
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FLAG_always_turbofan = false;
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CreateClassHierarchy(hierarchy_desc);
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TestClassHierarchy(hierarchy_desc, static_cast<int>(hierarchy_desc.size()));
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}
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void TestSubclassBasicNoBaseClassInstances() {}
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};
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TEST_F(InObjectSlackTrackingTest, JSObjectBasic) {
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// Avoid eventual completion of in-object slack tracking.
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FLAG_always_turbofan = false;
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const char* source =
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"function A() {"
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" this.a = 42;"
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" this.d = 4.2;"
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" this.o = this;"
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"}";
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CompileRun(source);
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Handle<JSFunction> func = GetGlobal<JSFunction>("A");
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// Zero instances were created so far.
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CHECK(!func->has_initial_map());
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v8::Local<v8::Script> new_A_script = Compile("new A();");
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Handle<JSObject> obj = RunI<JSObject>(new_A_script);
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CHECK(func->has_initial_map());
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Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
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// One instance created.
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CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
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initial_map->construction_counter());
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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// There must be at least some slack.
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CHECK_LT(5, obj->map().GetInObjectProperties());
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CHECK_EQ(Smi::FromInt(42), GetFieldValue(*obj, 0));
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CHECK_EQ(4.2, GetDoubleFieldValue(*obj, 1));
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CHECK_EQ(*obj, GetFieldValue(*obj, 2));
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CHECK(IsObjectShrinkable(*obj));
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// Create several objects to complete the tracking.
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for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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Handle<JSObject> tmp = RunI<JSObject>(new_A_script);
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CHECK_EQ(initial_map->IsInobjectSlackTrackingInProgress(),
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IsObjectShrinkable(*tmp));
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}
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CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
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CHECK(!IsObjectShrinkable(*obj));
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// No slack left.
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CHECK_EQ(3, obj->map().GetInObjectProperties());
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}
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TEST_F(InObjectSlackTrackingTest, JSObjectBasicNoInlineNew) {
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FLAG_inline_new = false;
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TestJSObjectBasic();
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}
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TEST_F(InObjectSlackTrackingTest, JSObjectComplex) {
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// Avoid eventual completion of in-object slack tracking.
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FLAG_always_turbofan = false;
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const char* source =
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"function A(n) {"
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" if (n > 0) this.a = 42;"
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" if (n > 1) this.d = 4.2;"
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" if (n > 2) this.o1 = this;"
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" if (n > 3) this.o2 = this;"
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" if (n > 4) this.o3 = this;"
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" if (n > 5) this.o4 = this;"
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"}";
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CompileRun(source);
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Handle<JSFunction> func = GetGlobal<JSFunction>("A");
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// Zero instances were created so far.
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CHECK(!func->has_initial_map());
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Handle<JSObject> obj1 = CompileRunI<JSObject>("new A(1);");
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Handle<JSObject> obj3 = CompileRunI<JSObject>("new A(3);");
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Handle<JSObject> obj5 = CompileRunI<JSObject>("new A(5);");
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CHECK(func->has_initial_map());
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Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
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// Three instances created.
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CHECK_EQ(Map::kSlackTrackingCounterStart - 3,
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initial_map->construction_counter());
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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// There must be at least some slack.
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CHECK_LT(5, obj3->map().GetInObjectProperties());
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CHECK_EQ(Smi::FromInt(42), GetFieldValue(*obj3, 0));
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CHECK_EQ(4.2, GetDoubleFieldValue(*obj3, 1));
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CHECK_EQ(*obj3, GetFieldValue(*obj3, 2));
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CHECK(IsObjectShrinkable(*obj1));
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CHECK(IsObjectShrinkable(*obj3));
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CHECK(IsObjectShrinkable(*obj5));
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// Create several objects to complete the tracking.
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for (int i = 3; i < Map::kGenerousAllocationCount; i++) {
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CHECK(initial_map->IsInobjectSlackTrackingInProgress());
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CompileRun("new A(3);");
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}
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CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
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// obj1 and obj2 stays shrinkable because we don't clear unused fields.
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CHECK(IsObjectShrinkable(*obj1));
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CHECK(IsObjectShrinkable(*obj3));
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CHECK(!IsObjectShrinkable(*obj5));
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CHECK_EQ(5, obj1->map().GetInObjectProperties());
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CHECK_EQ(4, obj1->map().UnusedPropertyFields());
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CHECK_EQ(5, obj3->map().GetInObjectProperties());
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CHECK_EQ(2, obj3->map().UnusedPropertyFields());
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CHECK_EQ(5, obj5->map().GetInObjectProperties());
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CHECK_EQ(0, obj5->map().UnusedPropertyFields());
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// Since slack tracking is complete, the new objects should not be shrinkable.
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obj1 = CompileRunI<JSObject>("new A(1);");
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obj3 = CompileRunI<JSObject>("new A(3);");
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obj5 = CompileRunI<JSObject>("new A(5);");
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CHECK(!IsObjectShrinkable(*obj1));
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CHECK(!IsObjectShrinkable(*obj3));
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CHECK(!IsObjectShrinkable(*obj5));
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}
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TEST_F(InObjectSlackTrackingTest, JSObjectComplexNoInlineNew) {
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FLAG_inline_new = false;
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TestJSObjectComplex();
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}
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TEST_F(InObjectSlackTrackingTest, JSGeneratorObjectBasic) {
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// Avoid eventual completion of in-object slack tracking.
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FLAG_always_turbofan = false;
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const char* source =
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"function* A() {"
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" var i = 0;"
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" while(true) {"
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" yield i++;"
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" }"
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"};"
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"function CreateGenerator() {"
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" var o = A();"
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" o.a = 42;"
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" o.d = 4.2;"
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" o.o = o;"
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" return o;"
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"}";
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CompileRun(source);
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Handle<JSFunction> func = GetGlobal<JSFunction>("A");
|
|
|
|
// Zero instances were created so far.
|
|
CHECK(!func->has_initial_map());
|
|
|
|
v8::Local<v8::Script> new_A_script = Compile("CreateGenerator();");
|
|
|
|
Handle<JSObject> obj = RunI<JSObject>(new_A_script);
|
|
|
|
CHECK(func->has_initial_map());
|
|
Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
|
|
|
|
// One instance created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
initial_map->construction_counter());
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// There must be at least some slack.
|
|
CHECK_LT(5, obj->map().GetInObjectProperties());
|
|
CHECK_EQ(Smi::FromInt(42), GetFieldValue(*obj, 0));
|
|
CHECK_EQ(4.2, GetDoubleFieldValue(*obj, 1));
|
|
CHECK_EQ(*obj, GetFieldValue(*obj, 2));
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
|
|
// Create several objects to complete the tracking.
|
|
for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_A_script);
|
|
CHECK_EQ(initial_map->IsInobjectSlackTrackingInProgress(),
|
|
IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*obj));
|
|
|
|
// No slack left.
|
|
CHECK_EQ(3, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, JSGeneratorObjectBasicNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestJSGeneratorObjectBasic();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassBasicNoBaseClassInstances) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
// Check that base class' and subclass' slack tracking do not interfere with
|
|
// each other.
|
|
// In this test we never create base class instances.
|
|
|
|
const char* source =
|
|
"'use strict';"
|
|
"class A {"
|
|
" constructor(...args) {"
|
|
" this.aa = 42;"
|
|
" this.ad = 4.2;"
|
|
" this.ao = this;"
|
|
" }"
|
|
"};"
|
|
"class B extends A {"
|
|
" constructor(...args) {"
|
|
" super(...args);"
|
|
" this.ba = 142;"
|
|
" this.bd = 14.2;"
|
|
" this.bo = this;"
|
|
" }"
|
|
"};";
|
|
CompileRun(source);
|
|
|
|
Handle<JSFunction> a_func = GetLexical<JSFunction>("A");
|
|
Handle<JSFunction> b_func = GetLexical<JSFunction>("B");
|
|
|
|
// Zero instances were created so far.
|
|
CHECK(!a_func->has_initial_map());
|
|
CHECK(!b_func->has_initial_map());
|
|
|
|
v8::Local<v8::Script> new_B_script = Compile("new B();");
|
|
|
|
Handle<JSObject> obj = RunI<JSObject>(new_B_script);
|
|
|
|
CHECK(a_func->has_initial_map());
|
|
Handle<Map> a_initial_map(a_func->initial_map(), a_func->GetIsolate());
|
|
|
|
CHECK(b_func->has_initial_map());
|
|
Handle<Map> b_initial_map(b_func->initial_map(), a_func->GetIsolate());
|
|
|
|
// Zero instances of A created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart,
|
|
a_initial_map->construction_counter());
|
|
CHECK(a_initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// One instance of B created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
b_initial_map->construction_counter());
|
|
CHECK(b_initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// There must be at least some slack.
|
|
CHECK_LT(10, obj->map().GetInObjectProperties());
|
|
CHECK_EQ(Smi::FromInt(42), GetFieldValue(*obj, 0));
|
|
CHECK_EQ(4.2, GetDoubleFieldValue(*obj, 1));
|
|
CHECK_EQ(*obj, GetFieldValue(*obj, 2));
|
|
CHECK_EQ(Smi::FromInt(142), GetFieldValue(*obj, 3));
|
|
CHECK_EQ(14.2, GetDoubleFieldValue(*obj, 4));
|
|
CHECK_EQ(*obj, GetFieldValue(*obj, 5));
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
|
|
// Create several subclass instances to complete the tracking.
|
|
for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(b_initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_B_script);
|
|
CHECK_EQ(b_initial_map->IsInobjectSlackTrackingInProgress(),
|
|
IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!b_initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*obj));
|
|
|
|
// Zero instances of A created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart,
|
|
a_initial_map->construction_counter());
|
|
CHECK(a_initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// No slack left.
|
|
CHECK_EQ(6, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest,
|
|
SubclassBasicNoBaseClassInstancesNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassBasicNoBaseClassInstances();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassBasic) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
// Check that base class' and subclass' slack tracking do not interfere with
|
|
// each other.
|
|
// In this test we first create enough base class instances to complete
|
|
// the slack tracking and then proceed creating subclass instances.
|
|
|
|
const char* source =
|
|
"'use strict';"
|
|
"class A {"
|
|
" constructor(...args) {"
|
|
" this.aa = 42;"
|
|
" this.ad = 4.2;"
|
|
" this.ao = this;"
|
|
" }"
|
|
"};"
|
|
"class B extends A {"
|
|
" constructor(...args) {"
|
|
" super(...args);"
|
|
" this.ba = 142;"
|
|
" this.bd = 14.2;"
|
|
" this.bo = this;"
|
|
" }"
|
|
"};";
|
|
CompileRun(source);
|
|
|
|
Handle<JSFunction> a_func = GetLexical<JSFunction>("A");
|
|
Handle<JSFunction> b_func = GetLexical<JSFunction>("B");
|
|
|
|
// Zero instances were created so far.
|
|
CHECK(!a_func->has_initial_map());
|
|
CHECK(!b_func->has_initial_map());
|
|
|
|
v8::Local<v8::Script> new_A_script = Compile("new A();");
|
|
v8::Local<v8::Script> new_B_script = Compile("new B();");
|
|
|
|
Handle<JSObject> a_obj = RunI<JSObject>(new_A_script);
|
|
Handle<JSObject> b_obj = RunI<JSObject>(new_B_script);
|
|
|
|
CHECK(a_func->has_initial_map());
|
|
Handle<Map> a_initial_map(a_func->initial_map(), a_func->GetIsolate());
|
|
|
|
CHECK(b_func->has_initial_map());
|
|
Handle<Map> b_initial_map(b_func->initial_map(), a_func->GetIsolate());
|
|
|
|
// One instance of a base class created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
a_initial_map->construction_counter());
|
|
CHECK(a_initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// One instance of a subclass created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
b_initial_map->construction_counter());
|
|
CHECK(b_initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// Create several base class instances to complete the tracking.
|
|
for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(a_initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_A_script);
|
|
CHECK_EQ(a_initial_map->IsInobjectSlackTrackingInProgress(),
|
|
IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!a_initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*a_obj));
|
|
|
|
// No slack left.
|
|
CHECK_EQ(3, a_obj->map().GetInObjectProperties());
|
|
|
|
// There must be at least some slack.
|
|
CHECK_LT(10, b_obj->map().GetInObjectProperties());
|
|
CHECK_EQ(Smi::FromInt(42), GetFieldValue(*b_obj, 0));
|
|
CHECK_EQ(4.2, GetDoubleFieldValue(*b_obj, 1));
|
|
CHECK_EQ(*b_obj, GetFieldValue(*b_obj, 2));
|
|
CHECK_EQ(Smi::FromInt(142), GetFieldValue(*b_obj, 3));
|
|
CHECK_EQ(14.2, GetDoubleFieldValue(*b_obj, 4));
|
|
CHECK_EQ(*b_obj, GetFieldValue(*b_obj, 5));
|
|
CHECK(IsObjectShrinkable(*b_obj));
|
|
|
|
// Create several subclass instances to complete the tracking.
|
|
for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(b_initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_B_script);
|
|
CHECK_EQ(b_initial_map->IsInobjectSlackTrackingInProgress(),
|
|
IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!b_initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*b_obj));
|
|
|
|
// No slack left.
|
|
CHECK_EQ(6, b_obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassBasicNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassBasic();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, Subclasses) {
|
|
std::vector<int> hierarchy_desc;
|
|
hierarchy_desc.push_back(50);
|
|
hierarchy_desc.push_back(128);
|
|
TestSubclassChain(hierarchy_desc);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, LongSubclassChain1) {
|
|
std::vector<int> hierarchy_desc;
|
|
for (int i = 0; i < 7; i++) {
|
|
hierarchy_desc.push_back(i * 10);
|
|
}
|
|
TestSubclassChain(hierarchy_desc);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, LongSubclassChain2) {
|
|
std::vector<int> hierarchy_desc;
|
|
hierarchy_desc.push_back(10);
|
|
for (int i = 0; i < 42; i++) {
|
|
hierarchy_desc.push_back(0);
|
|
}
|
|
hierarchy_desc.push_back(230);
|
|
TestSubclassChain(hierarchy_desc);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, LongSubclassChain3) {
|
|
std::vector<int> hierarchy_desc;
|
|
for (int i = 0; i < 42; i++) {
|
|
hierarchy_desc.push_back(5);
|
|
}
|
|
TestSubclassChain(hierarchy_desc);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, InobjectPropetiesCountOverflowInSubclass) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
std::vector<int> hierarchy_desc;
|
|
const int kNoOverflowCount = 5;
|
|
for (int i = 0; i < kNoOverflowCount; i++) {
|
|
hierarchy_desc.push_back(50);
|
|
}
|
|
// In this class we are going to have properties in the backing store.
|
|
hierarchy_desc.push_back(100);
|
|
|
|
CreateClassHierarchy(hierarchy_desc);
|
|
|
|
// For the last class in the hierarchy we need different checks.
|
|
{
|
|
int cur_class = kNoOverflowCount;
|
|
std::string class_name = GetClassName(cur_class);
|
|
|
|
// Create |class_name| objects and check slack tracking.
|
|
v8::Local<v8::Script> new_script = GetNewObjectScript(class_name);
|
|
|
|
Handle<JSFunction> func = GetLexical<JSFunction>(class_name);
|
|
|
|
Handle<JSObject> obj = RunI<JSObject>(new_script);
|
|
|
|
CHECK(func->has_initial_map());
|
|
Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
|
|
|
|
// There must be no slack left.
|
|
CHECK_EQ(JSObject::kMaxInstanceSize, obj->map().instance_size());
|
|
CHECK_EQ(kMaxInobjectProperties, obj->map().GetInObjectProperties());
|
|
|
|
// One instance was created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
initial_map->construction_counter());
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// Create several instances to complete the tracking.
|
|
for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_script);
|
|
CHECK(!IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*obj));
|
|
|
|
// No slack left.
|
|
CHECK_EQ(kMaxInobjectProperties, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
// The other classes in the hierarchy are not affected.
|
|
TestClassHierarchy(hierarchy_desc, kNoOverflowCount);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, ObjectLiteralPropertyBackingStoreSize) {
|
|
std::ostringstream os;
|
|
|
|
// An index key does not require space in the property backing store.
|
|
os << "(function() {\n"
|
|
" function f() {\n"
|
|
" var o = {\n"
|
|
" '-1': 42,\n" // Allocate for non-index key.
|
|
" 1: 42,\n" // Do not allocate for index key.
|
|
" '2': 42\n" // Do not allocate for index key.
|
|
" };\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" return f();\n"
|
|
"} )();";
|
|
CheckExpectedProperties(1, os);
|
|
|
|
// Avoid over-/under-allocation for computed property names.
|
|
os << "(function() {\n"
|
|
" 'use strict';\n"
|
|
" function f(x) {\n"
|
|
" var o = {\n"
|
|
" 1: 42,\n" // Do not allocate for index key.
|
|
" '2': 42,\n" // Do not allocate for index key.
|
|
" [x]: 42,\n" // Allocate for property with computed name.
|
|
" 3: 42,\n" // Do not allocate for index key.
|
|
" '4': 42\n" // Do not allocate for index key.
|
|
" };\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" var x = 'hello'\n"
|
|
"\n"
|
|
" return f(x);\n"
|
|
"} )();";
|
|
CheckExpectedProperties(1, os);
|
|
|
|
// Conversion to index key.
|
|
os << "(function() {\n"
|
|
" function f(x) {\n"
|
|
" var o = {\n"
|
|
" 1: 42,\n" // Do not allocate for index key.
|
|
" '2': 42,\n" // Do not allocate for index key.
|
|
" [x]: 42,\n" // Allocate for property with computed name.
|
|
" 3: 42,\n" // Do not allocate for index key.
|
|
" get 12() {}\n" // Do not allocate for index key.
|
|
" };\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" var x = 'hello'\n"
|
|
"\n"
|
|
" return f(x);\n"
|
|
"} )();";
|
|
CheckExpectedProperties(1, os);
|
|
|
|
os << "(function() {\n"
|
|
" function f() {\n"
|
|
" var o = {};\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" return f();\n"
|
|
"} )();";
|
|
// Empty objects have slack for 4 properties.
|
|
CheckExpectedProperties(4, os);
|
|
|
|
os << "(function() {\n"
|
|
" function f(x) {\n"
|
|
" var o = {\n"
|
|
" a: 42,\n" // Allocate for constant property.
|
|
" [x]: 42,\n" // Allocate for property with computed name.
|
|
" b: 42\n" // Allocate for constant property.
|
|
" };\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" var x = 'hello'\n"
|
|
"\n"
|
|
" return f(x);\n"
|
|
"} )();";
|
|
CheckExpectedProperties(3, os);
|
|
|
|
os << "(function() {\n"
|
|
" function f(x) {\n"
|
|
" var o = {\n"
|
|
" a: 42,\n" // Allocate for constant property.
|
|
" __proto__: 42,\n" // Do not allocate for __proto__.
|
|
" [x]: 42\n" // Allocate for property with computed name.
|
|
" };\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" var x = 'hello'\n"
|
|
"\n"
|
|
" return f(x);\n"
|
|
"} )();";
|
|
// __proto__ is not allocated in the backing store.
|
|
CheckExpectedProperties(2, os);
|
|
|
|
os << "(function() {\n"
|
|
" function f(x) {\n"
|
|
" var o = {\n"
|
|
" a: 42,\n" // Allocate for constant property.
|
|
" [x]: 42,\n" // Allocate for property with computed name.
|
|
" __proto__: 42\n" // Do not allocate for __proto__.
|
|
" };\n"
|
|
" return o;\n"
|
|
" }\n"
|
|
"\n"
|
|
" var x = 'hello'\n"
|
|
"\n"
|
|
" return f(x);\n"
|
|
"} )();";
|
|
CheckExpectedProperties(2, os);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SlowModeSubclass) {
|
|
if (FLAG_stress_concurrent_allocation) return;
|
|
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
std::vector<int> hierarchy_desc;
|
|
const int kNoOverflowCount = 5;
|
|
for (int i = 0; i < kNoOverflowCount; i++) {
|
|
hierarchy_desc.push_back(50);
|
|
}
|
|
// This class should go dictionary mode.
|
|
hierarchy_desc.push_back(1000);
|
|
|
|
CreateClassHierarchy(hierarchy_desc);
|
|
|
|
// For the last class in the hierarchy we need different checks.
|
|
{
|
|
int cur_class = kNoOverflowCount;
|
|
std::string class_name = GetClassName(cur_class);
|
|
|
|
// Create |class_name| objects and check slack tracking.
|
|
v8::Local<v8::Script> new_script = GetNewObjectScript(class_name);
|
|
|
|
Handle<JSFunction> func = GetLexical<JSFunction>(class_name);
|
|
|
|
Handle<JSObject> obj = RunI<JSObject>(new_script);
|
|
|
|
CHECK(func->has_initial_map());
|
|
Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
|
|
|
|
// Object should go dictionary mode.
|
|
CHECK_EQ(JSObject::kHeaderSize, obj->map().instance_size());
|
|
CHECK(obj->map().is_dictionary_map());
|
|
|
|
// One instance was created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
initial_map->construction_counter());
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// Create several instances to complete the tracking.
|
|
for (int i = 1; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_script);
|
|
CHECK(!IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*obj));
|
|
|
|
// Object should stay in dictionary mode.
|
|
CHECK_EQ(JSObject::kHeaderSize, obj->map().instance_size());
|
|
CHECK(obj->map().is_dictionary_map());
|
|
}
|
|
|
|
// The other classes in the hierarchy are not affected.
|
|
TestClassHierarchy(hierarchy_desc, kNoOverflowCount);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassObjectBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
TestSubclassBuiltin("A1", JS_OBJECT_TYPE, "Object", "true");
|
|
TestSubclassBuiltin("A2", JS_OBJECT_TYPE, "Object", "42");
|
|
TestSubclassBuiltin("A3", JS_OBJECT_TYPE, "Object", "'some string'");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassObjectBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassObjectBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassFunctionBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
TestSubclassBuiltin("A1", JS_FUNCTION_TYPE, "Function", "'return 153;'");
|
|
TestSubclassBuiltin("A2", JS_FUNCTION_TYPE, "Function", "'this.a = 44;'");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassFunctionBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassFunctionBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassBooleanBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
TestSubclassBuiltin("A1", JS_PRIMITIVE_WRAPPER_TYPE, "Boolean", "true");
|
|
TestSubclassBuiltin("A2", JS_PRIMITIVE_WRAPPER_TYPE, "Boolean", "false");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassBooleanBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassBooleanBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassErrorBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
const int first_field = 2;
|
|
TestSubclassBuiltin("A1", JS_ERROR_TYPE, "Error", "'err'", first_field);
|
|
TestSubclassBuiltin("A2", JS_ERROR_TYPE, "EvalError", "'err'", first_field);
|
|
TestSubclassBuiltin("A3", JS_ERROR_TYPE, "RangeError", "'err'", first_field);
|
|
TestSubclassBuiltin("A4", JS_ERROR_TYPE, "ReferenceError", "'err'",
|
|
first_field);
|
|
TestSubclassBuiltin("A5", JS_ERROR_TYPE, "SyntaxError", "'err'", first_field);
|
|
TestSubclassBuiltin("A6", JS_ERROR_TYPE, "TypeError", "'err'", first_field);
|
|
TestSubclassBuiltin("A7", JS_ERROR_TYPE, "URIError", "'err'", first_field);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassErrorBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassErrorBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassNumberBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
TestSubclassBuiltin("A1", JS_PRIMITIVE_WRAPPER_TYPE, "Number", "42");
|
|
TestSubclassBuiltin("A2", JS_PRIMITIVE_WRAPPER_TYPE, "Number", "4.2");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassNumberBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassNumberBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassDateBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
TestSubclassBuiltin("A1", JS_DATE_TYPE, "Date", "123456789");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassDateBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassDateBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassStringBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
TestSubclassBuiltin("A1", JS_PRIMITIVE_WRAPPER_TYPE, "String",
|
|
"'some string'");
|
|
TestSubclassBuiltin("A2", JS_PRIMITIVE_WRAPPER_TYPE, "String", "");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassStringBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassRegExpBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
const int first_field = 1;
|
|
TestSubclassBuiltin("A1", JS_REG_EXP_TYPE, "RegExp", "'o(..)h', 'g'",
|
|
first_field);
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassRegExpBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassRegExpBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassArrayBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
TestSubclassBuiltin("A1", JS_ARRAY_TYPE, "Array", "42");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassArrayBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassArrayBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassTypedArrayBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
|
|
#define TYPED_ARRAY_TEST_F(InObjectSlackTrackingTest, Type, type, TYPE, \
|
|
elementType) \
|
|
TestSubclassBuiltin("A" #Type, JS_TYPED_ARRAY_TYPE, #Type "Array", "42");
|
|
|
|
TYPED_ARRAYS(TYPED_ARRAY_TEST)
|
|
|
|
#undef TYPED_ARRAY_TEST
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassTypedArrayBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassTypedArrayBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassCollectionBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
TestSubclassBuiltin("A1", JS_SET_TYPE, "Set", "");
|
|
TestSubclassBuiltin("A2", JS_MAP_TYPE, "Map", "");
|
|
TestSubclassBuiltin("A3", JS_WEAK_SET_TYPE, "WeakSet", "");
|
|
TestSubclassBuiltin("A4", JS_WEAK_MAP_TYPE, "WeakMap", "");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassCollectionBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassCollectionBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassArrayBufferBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
TestSubclassBuiltin("A1", JS_ARRAY_BUFFER_TYPE, "ArrayBuffer", "42");
|
|
TestSubclassBuiltin("A2", JS_DATA_VIEW_TYPE, "DataView",
|
|
"new ArrayBuffer(42)");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassArrayBufferBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassArrayBufferBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassPromiseBuiltin) {
|
|
// Avoid eventual completion of in-object slack tracking.
|
|
FLAG_always_turbofan = false;
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
TestSubclassBuiltin("A1", JS_PROMISE_TYPE, "Promise",
|
|
"function(resolve, reject) { resolve('ok'); }");
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassPromiseBuiltinNoInlineNew) {
|
|
FLAG_inline_new = false;
|
|
TestSubclassPromiseBuiltin();
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, SubclassTranspiledClassHierarchy) {
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
CompileRun(
|
|
"Object.setPrototypeOf(B, A);\n"
|
|
"function A() {\n"
|
|
" this.a0 = 0;\n"
|
|
" this.a1 = 1;\n"
|
|
" this.a2 = 1;\n"
|
|
" this.a3 = 1;\n"
|
|
" this.a4 = 1;\n"
|
|
" this.a5 = 1;\n"
|
|
" this.a6 = 1;\n"
|
|
" this.a7 = 1;\n"
|
|
" this.a8 = 1;\n"
|
|
" this.a9 = 1;\n"
|
|
" this.a10 = 1;\n"
|
|
" this.a11 = 1;\n"
|
|
" this.a12 = 1;\n"
|
|
" this.a13 = 1;\n"
|
|
" this.a14 = 1;\n"
|
|
" this.a15 = 1;\n"
|
|
" this.a16 = 1;\n"
|
|
" this.a17 = 1;\n"
|
|
" this.a18 = 1;\n"
|
|
" this.a19 = 1;\n"
|
|
"};\n"
|
|
"function B() {\n"
|
|
" A.call(this);\n"
|
|
" this.b = 1;\n"
|
|
"};\n");
|
|
|
|
Handle<JSFunction> func = GetGlobal<JSFunction>("B");
|
|
|
|
// Zero instances have been created so far.
|
|
CHECK(!func->has_initial_map());
|
|
|
|
v8::Local<v8::Script> new_script = v8_compile("new B()");
|
|
|
|
RunI<JSObject>(new_script);
|
|
|
|
CHECK(func->has_initial_map());
|
|
Handle<Map> initial_map(func->initial_map(), func->GetIsolate());
|
|
|
|
CHECK_EQ(JS_OBJECT_TYPE, initial_map->instance_type());
|
|
|
|
// One instance of a subclass created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 1,
|
|
initial_map->construction_counter());
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
|
|
// Create two instances in order to ensure that |obj|.o is a data field
|
|
// in case of Function subclassing.
|
|
Handle<JSObject> obj = RunI<JSObject>(new_script);
|
|
|
|
// Two instances of a subclass created.
|
|
CHECK_EQ(Map::kSlackTrackingCounterStart - 2,
|
|
initial_map->construction_counter());
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
|
|
// Create several subclass instances to complete the tracking.
|
|
for (int i = 2; i < Map::kGenerousAllocationCount; i++) {
|
|
CHECK(initial_map->IsInobjectSlackTrackingInProgress());
|
|
Handle<JSObject> tmp = RunI<JSObject>(new_script);
|
|
CHECK_EQ(initial_map->IsInobjectSlackTrackingInProgress(),
|
|
IsObjectShrinkable(*tmp));
|
|
}
|
|
CHECK(!initial_map->IsInobjectSlackTrackingInProgress());
|
|
CHECK(!IsObjectShrinkable(*obj));
|
|
|
|
// No slack left.
|
|
CHECK_EQ(21, obj->map().GetInObjectProperties());
|
|
CHECK_EQ(JS_OBJECT_TYPE, obj->map().instance_type());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, Regress8853_ClassConstructor) {
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
// For classes without any this.prop assignments in their
|
|
// constructors we start out with 10 inobject properties.
|
|
Handle<JSObject> obj = CompileRunI<JSObject>("new (class {});\n");
|
|
CHECK(obj->map().IsInobjectSlackTrackingInProgress());
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
CHECK_EQ(10, obj->map().GetInObjectProperties());
|
|
|
|
// For classes with N explicit this.prop assignments in their
|
|
// constructors we start out with N+8 inobject properties.
|
|
obj = CompileRunI<JSObject>(
|
|
"new (class {\n"
|
|
" constructor() {\n"
|
|
" this.x = 1;\n"
|
|
" this.y = 2;\n"
|
|
" this.z = 3;\n"
|
|
" }\n"
|
|
"});\n");
|
|
CHECK(obj->map().IsInobjectSlackTrackingInProgress());
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
CHECK_EQ(3 + 8, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, Regress8853_ClassHierarchy) {
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
// For class hierarchies without any this.prop assignments in their
|
|
// constructors we reserve 2 inobject properties per constructor plus
|
|
// 8 inobject properties slack on top.
|
|
std::string base = "(class {})";
|
|
for (int i = 1; i < 10; ++i) {
|
|
std::string script = "new " + base + ";\n";
|
|
Handle<JSObject> obj = CompileRunI<JSObject>(script.c_str());
|
|
CHECK(obj->map().IsInobjectSlackTrackingInProgress());
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
CHECK_EQ(8 + 2 * i, obj->map().GetInObjectProperties());
|
|
base = "(class extends " + base + " {})";
|
|
}
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest, Regress8853_FunctionConstructor) {
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
// For constructor functions without any this.prop assignments in
|
|
// them we start out with 10 inobject properties.
|
|
Handle<JSObject> obj = CompileRunI<JSObject>("new (function() {});\n");
|
|
CHECK(obj->map().IsInobjectSlackTrackingInProgress());
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
CHECK_EQ(10, obj->map().GetInObjectProperties());
|
|
|
|
// For constructor functions with N explicit this.prop assignments
|
|
// in them we start out with N+8 inobject properties.
|
|
obj = CompileRunI<JSObject>(
|
|
"new (function() {\n"
|
|
" this.a = 1;\n"
|
|
" this.b = 2;\n"
|
|
" this.c = 3;\n"
|
|
" this.d = 3;\n"
|
|
" this.c = 3;\n"
|
|
" this.f = 3;\n"
|
|
"});\n");
|
|
CHECK(obj->map().IsInobjectSlackTrackingInProgress());
|
|
CHECK(IsObjectShrinkable(*obj));
|
|
CHECK_EQ(6 + 8, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest,
|
|
InstanceFieldsArePropertiesDefaultConstructorLazy) {
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
Handle<JSObject> obj = CompileRunI<JSObject>(
|
|
"new (class {\n"
|
|
" x00 = null;\n"
|
|
" x01 = null;\n"
|
|
" x02 = null;\n"
|
|
" x03 = null;\n"
|
|
" x04 = null;\n"
|
|
" x05 = null;\n"
|
|
" x06 = null;\n"
|
|
" x07 = null;\n"
|
|
" x08 = null;\n"
|
|
" x09 = null;\n"
|
|
" x10 = null;\n"
|
|
"});\n");
|
|
CHECK_EQ(11 + 8, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest,
|
|
InstanceFieldsArePropertiesFieldsAndConstructorLazy) {
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
Handle<JSObject> obj = CompileRunI<JSObject>(
|
|
"new (class {\n"
|
|
" x00 = null;\n"
|
|
" x01 = null;\n"
|
|
" x02 = null;\n"
|
|
" x03 = null;\n"
|
|
" x04 = null;\n"
|
|
" x05 = null;\n"
|
|
" x06 = null;\n"
|
|
" x07 = null;\n"
|
|
" x08 = null;\n"
|
|
" x09 = null;\n"
|
|
" x10 = null;\n"
|
|
" constructor() {\n"
|
|
" this.x11 = null;\n"
|
|
" this.x12 = null;\n"
|
|
" this.x12 = null;\n"
|
|
" this.x14 = null;\n"
|
|
" this.x15 = null;\n"
|
|
" this.x16 = null;\n"
|
|
" this.x17 = null;\n"
|
|
" this.x18 = null;\n"
|
|
" this.x19 = null;\n"
|
|
" this.x20 = null;\n"
|
|
" }\n"
|
|
"});\n");
|
|
CHECK_EQ(21 + 8, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest,
|
|
InstanceFieldsArePropertiesDefaultConstructorEager) {
|
|
i::FLAG_lazy = false;
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
Handle<JSObject> obj = CompileRunI<JSObject>(
|
|
"new (class {\n"
|
|
" x00 = null;\n"
|
|
" x01 = null;\n"
|
|
" x02 = null;\n"
|
|
" x03 = null;\n"
|
|
" x04 = null;\n"
|
|
" x05 = null;\n"
|
|
" x06 = null;\n"
|
|
" x07 = null;\n"
|
|
" x08 = null;\n"
|
|
" x09 = null;\n"
|
|
" x10 = null;\n"
|
|
"});\n");
|
|
CHECK_EQ(11 + 8, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
TEST_F(InObjectSlackTrackingTest,
|
|
InstanceFieldsArePropertiesFieldsAndConstructorEager) {
|
|
i::FLAG_lazy = false;
|
|
CcTest::InitializeVM();
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
Handle<JSObject> obj = CompileRunI<JSObject>(
|
|
"new (class {\n"
|
|
" x00 = null;\n"
|
|
" x01 = null;\n"
|
|
" x02 = null;\n"
|
|
" x03 = null;\n"
|
|
" x04 = null;\n"
|
|
" x05 = null;\n"
|
|
" x06 = null;\n"
|
|
" x07 = null;\n"
|
|
" x08 = null;\n"
|
|
" x09 = null;\n"
|
|
" x10 = null;\n"
|
|
" constructor() {\n"
|
|
" this.x11 = null;\n"
|
|
" this.x12 = null;\n"
|
|
" this.x12 = null;\n"
|
|
" this.x14 = null;\n"
|
|
" this.x15 = null;\n"
|
|
" this.x16 = null;\n"
|
|
" this.x17 = null;\n"
|
|
" this.x18 = null;\n"
|
|
" this.x19 = null;\n"
|
|
" this.x20 = null;\n"
|
|
" }\n"
|
|
"});\n");
|
|
CHECK_EQ(21 + 8, obj->map().GetInObjectProperties());
|
|
}
|
|
|
|
} // namespace test_inobject_slack_tracking
|
|
} // namespace internal
|
|
} // namespace v8
|