accbe2216e
Instead of CanRetainOtherContext, we now manually blacklist all access-checked objects. BUG= Review URL: https://codereview.chromium.org/1020803004 Cr-Commit-Position: refs/heads/master@{#27473}
151 lines
5.7 KiB
C++
151 lines
5.7 KiB
C++
// Copyright 2012 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.
|
|
|
|
#ifndef V8_TYPE_INFO_H_
|
|
#define V8_TYPE_INFO_H_
|
|
|
|
#include "src/allocation.h"
|
|
#include "src/globals.h"
|
|
#include "src/types.h"
|
|
#include "src/zone.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
// Forward declarations.
|
|
class SmallMapList;
|
|
|
|
|
|
class TypeFeedbackOracle: public ZoneObject {
|
|
public:
|
|
TypeFeedbackOracle(Isolate* isolate, Zone* zone, Handle<Code> code,
|
|
Handle<TypeFeedbackVector> feedback_vector,
|
|
Handle<Context> native_context);
|
|
|
|
bool LoadIsUninitialized(TypeFeedbackId id);
|
|
bool LoadIsUninitialized(FeedbackVectorICSlot slot);
|
|
bool StoreIsUninitialized(TypeFeedbackId id);
|
|
bool CallIsUninitialized(FeedbackVectorICSlot slot);
|
|
bool CallIsMonomorphic(FeedbackVectorICSlot slot);
|
|
bool KeyedArrayCallIsHoley(TypeFeedbackId id);
|
|
bool CallNewIsMonomorphic(FeedbackVectorSlot slot);
|
|
|
|
// TODO(1571) We can't use ForInStatement::ForInType as the return value due
|
|
// to various cycles in our headers.
|
|
// TODO(rossberg): once all oracle access is removed from ast.cc, it should
|
|
// be possible.
|
|
byte ForInType(FeedbackVectorSlot feedback_vector_slot);
|
|
|
|
void GetStoreModeAndKeyType(TypeFeedbackId id,
|
|
KeyedAccessStoreMode* store_mode,
|
|
IcCheckType* key_type);
|
|
void GetLoadKeyType(TypeFeedbackId id, IcCheckType* key_type);
|
|
|
|
void PropertyReceiverTypes(TypeFeedbackId id, Handle<Name> name,
|
|
SmallMapList* receiver_types);
|
|
void PropertyReceiverTypes(FeedbackVectorICSlot slot, Handle<Name> name,
|
|
SmallMapList* receiver_types);
|
|
void KeyedPropertyReceiverTypes(TypeFeedbackId id,
|
|
SmallMapList* receiver_types,
|
|
bool* is_string,
|
|
IcCheckType* key_type);
|
|
void KeyedPropertyReceiverTypes(FeedbackVectorICSlot slot,
|
|
SmallMapList* receiver_types, bool* is_string,
|
|
IcCheckType* key_type);
|
|
void AssignmentReceiverTypes(TypeFeedbackId id, Handle<Name> name,
|
|
SmallMapList* receiver_types);
|
|
void KeyedAssignmentReceiverTypes(TypeFeedbackId id,
|
|
SmallMapList* receiver_types,
|
|
KeyedAccessStoreMode* store_mode,
|
|
IcCheckType* key_type);
|
|
void CountReceiverTypes(TypeFeedbackId id,
|
|
SmallMapList* receiver_types);
|
|
|
|
void CollectReceiverTypes(TypeFeedbackId id,
|
|
SmallMapList* types);
|
|
template <class T>
|
|
void CollectReceiverTypes(T* obj, SmallMapList* types);
|
|
|
|
static bool IsRelevantFeedback(Map* map, Context* native_context) {
|
|
Object* constructor = map->GetConstructor();
|
|
return !constructor->IsJSFunction() ||
|
|
JSFunction::cast(constructor)->context()->native_context() ==
|
|
native_context;
|
|
}
|
|
|
|
Handle<JSFunction> GetCallTarget(FeedbackVectorICSlot slot);
|
|
Handle<AllocationSite> GetCallAllocationSite(FeedbackVectorICSlot slot);
|
|
Handle<JSFunction> GetCallNewTarget(FeedbackVectorSlot slot);
|
|
Handle<AllocationSite> GetCallNewAllocationSite(FeedbackVectorSlot slot);
|
|
|
|
bool LoadIsBuiltin(TypeFeedbackId id, Builtins::Name builtin_id);
|
|
|
|
// TODO(1571) We can't use ToBooleanStub::Types as the return value because
|
|
// of various cycles in our headers. Death to tons of implementations in
|
|
// headers!! :-P
|
|
byte ToBooleanTypes(TypeFeedbackId id);
|
|
|
|
// Get type information for arithmetic operations and compares.
|
|
void BinaryType(TypeFeedbackId id,
|
|
Type** left,
|
|
Type** right,
|
|
Type** result,
|
|
Maybe<int>* fixed_right_arg,
|
|
Handle<AllocationSite>* allocation_site,
|
|
Token::Value operation);
|
|
|
|
void CompareType(TypeFeedbackId id,
|
|
Type** left,
|
|
Type** right,
|
|
Type** combined);
|
|
|
|
Type* CountType(TypeFeedbackId id);
|
|
|
|
Zone* zone() const { return zone_; }
|
|
Isolate* isolate() const { return isolate_; }
|
|
|
|
private:
|
|
void CollectReceiverTypes(TypeFeedbackId id, Handle<Name> name,
|
|
Code::Flags flags, SmallMapList* types);
|
|
template <class T>
|
|
void CollectReceiverTypes(T* obj, Handle<Name> name, Code::Flags flags,
|
|
SmallMapList* types);
|
|
|
|
// Returns true if there is at least one string map and if
|
|
// all maps are string maps.
|
|
bool HasOnlyStringMaps(SmallMapList* receiver_types);
|
|
|
|
void SetInfo(TypeFeedbackId id, Object* target);
|
|
|
|
void BuildDictionary(Handle<Code> code);
|
|
void GetRelocInfos(Handle<Code> code, ZoneList<RelocInfo>* infos);
|
|
void CreateDictionary(Handle<Code> code, ZoneList<RelocInfo>* infos);
|
|
void RelocateRelocInfos(ZoneList<RelocInfo>* infos,
|
|
Code* old_code,
|
|
Code* new_code);
|
|
void ProcessRelocInfos(ZoneList<RelocInfo>* infos);
|
|
|
|
// Returns an element from the backing store. Returns undefined if
|
|
// there is no information.
|
|
Handle<Object> GetInfo(TypeFeedbackId id);
|
|
|
|
// Returns an element from the type feedback vector. Returns undefined
|
|
// if there is no information.
|
|
Handle<Object> GetInfo(FeedbackVectorSlot slot);
|
|
Handle<Object> GetInfo(FeedbackVectorICSlot slot);
|
|
|
|
private:
|
|
Handle<Context> native_context_;
|
|
Isolate* isolate_;
|
|
Zone* zone_;
|
|
Handle<UnseededNumberDictionary> dictionary_;
|
|
Handle<TypeFeedbackVector> feedback_vector_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
|
|
};
|
|
|
|
} } // namespace v8::internal
|
|
|
|
#endif // V8_TYPE_INFO_H_
|