| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef V8_STUB_CACHE_H_ |
| #define V8_STUB_CACHE_H_ |
| |
| #include "allocation.h" |
| #include "arguments.h" |
| #include "code-stubs.h" |
| #include "ic-inl.h" |
| #include "macro-assembler.h" |
| #include "objects.h" |
| #include "zone-inl.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| // The stub cache is used for megamorphic calls and property accesses. |
| // It maps (map, name, type)->Code* |
| |
| // The design of the table uses the inline cache stubs used for |
| // mono-morphic calls. The beauty of this, we do not have to |
| // invalidate the cache whenever a prototype map is changed. The stub |
| // validates the map chain as in the mono-morphic case. |
| |
| class SmallMapList; |
| class StubCache; |
| |
| |
| class SCTableReference { |
| public: |
| Address address() const { return address_; } |
| |
| private: |
| explicit SCTableReference(Address address) : address_(address) {} |
| |
| Address address_; |
| |
| friend class StubCache; |
| }; |
| |
| |
| class StubCache { |
| public: |
| struct Entry { |
| Name* key; |
| Code* value; |
| Map* map; |
| }; |
| |
| void Initialize(); |
| |
| Handle<JSObject> StubHolder(Handle<JSObject> receiver, |
| Handle<JSObject> holder); |
| |
| Handle<Code> FindIC(Handle<Name> name, |
| Handle<Map> stub_holder_map, |
| Code::Kind kind, |
| Code::StubType type, |
| Code::ExtraICState extra_state = Code::kNoExtraICState); |
| |
| Handle<Code> FindIC(Handle<Name> name, |
| Handle<JSObject> stub_holder, |
| Code::Kind kind, |
| Code::StubType type, |
| Code::ExtraICState extra_state = Code::kNoExtraICState); |
| |
| Handle<Code> FindLoadHandler(Handle<Name> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> stub_holder, |
| Code::Kind kind, |
| Code::StubType type); |
| |
| Handle<Code> FindStoreHandler(Handle<Name> name, |
| Handle<JSObject> receiver, |
| Code::Kind kind, |
| Code::StubType type, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeMonomorphicLoadIC(Handle<JSObject> receiver, |
| Handle<Code> handler, |
| Handle<Name> name); |
| |
| Handle<Code> ComputeMonomorphicKeyedLoadIC(Handle<JSObject> receiver, |
| Handle<Code> handler, |
| Handle<Name> name); |
| |
| Handle<Code> ComputeMonomorphicStoreIC(Handle<JSObject> receiver, |
| Handle<Code> handler, |
| Handle<Name> name, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeMonomorphicKeyedStoreIC(Handle<JSObject> receiver, |
| Handle<Code> handler, |
| Handle<Name> name, |
| StrictModeFlag strict_mode); |
| |
| // Computes the right stub matching. Inserts the result in the |
| // cache before returning. This might compile a stub if needed. |
| Handle<Code> ComputeLoadNonexistent(Handle<Name> name, |
| Handle<JSObject> object); |
| |
| Handle<Code> ComputeLoadField(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| PropertyIndex field_index, |
| Representation representation); |
| |
| Handle<Code> ComputeLoadCallback(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<ExecutableAccessorInfo> callback); |
| |
| Handle<Code> ComputeLoadViaGetter(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<JSFunction> getter); |
| |
| Handle<Code> ComputeLoadConstant(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Object> value); |
| |
| Handle<Code> ComputeLoadInterceptor(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder); |
| |
| Handle<Code> ComputeLoadNormal(Handle<Name> name, |
| Handle<JSObject> object); |
| |
| Handle<Code> ComputeLoadGlobal(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<GlobalObject> holder, |
| Handle<PropertyCell> cell, |
| bool is_dont_delete); |
| |
| // --- |
| |
| Handle<Code> ComputeKeyedLoadField(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| PropertyIndex field_index, |
| Representation representation); |
| |
| Handle<Code> ComputeKeyedLoadCallback( |
| Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<ExecutableAccessorInfo> callback); |
| |
| Handle<Code> ComputeKeyedLoadConstant(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Object> value); |
| |
| Handle<Code> ComputeKeyedLoadInterceptor(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder); |
| |
| // --- |
| |
| Handle<Code> ComputeStoreField(Handle<Name> name, |
| Handle<JSObject> object, |
| LookupResult* lookup, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeStoreTransition(Handle<Name> name, |
| Handle<JSObject> object, |
| LookupResult* lookup, |
| Handle<Map> transition, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeStoreNormal(StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeStoreGlobal(Handle<Name> name, |
| Handle<GlobalObject> object, |
| Handle<PropertyCell> cell, |
| Handle<Object> value, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeStoreCallback(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<ExecutableAccessorInfo> callback, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeStoreViaSetter(Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<JSFunction> setter, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeStoreInterceptor(Handle<Name> name, |
| Handle<JSObject> object, |
| StrictModeFlag strict_mode); |
| |
| // --- |
| |
| Handle<Code> ComputeKeyedStoreField(Handle<Name> name, |
| Handle<JSObject> object, |
| LookupResult* lookup, |
| StrictModeFlag strict_mode); |
| Handle<Code> ComputeKeyedStoreTransition(Handle<Name> name, |
| Handle<JSObject> object, |
| LookupResult* lookup, |
| Handle<Map> transition, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputeKeyedLoadElement(Handle<Map> receiver_map); |
| |
| Handle<Code> ComputeKeyedStoreElement(Handle<Map> receiver_map, |
| StrictModeFlag strict_mode, |
| KeyedAccessStoreMode store_mode); |
| |
| // --- |
| |
| Handle<Code> ComputeCallField(int argc, |
| Code::Kind, |
| Code::ExtraICState extra_state, |
| Handle<Name> name, |
| Handle<Object> object, |
| Handle<JSObject> holder, |
| PropertyIndex index); |
| |
| Handle<Code> ComputeCallConstant(int argc, |
| Code::Kind, |
| Code::ExtraICState extra_state, |
| Handle<Name> name, |
| Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<JSFunction> function); |
| |
| Handle<Code> ComputeCallInterceptor(int argc, |
| Code::Kind, |
| Code::ExtraICState extra_state, |
| Handle<Name> name, |
| Handle<Object> object, |
| Handle<JSObject> holder); |
| |
| Handle<Code> ComputeCallGlobal(int argc, |
| Code::Kind, |
| Code::ExtraICState extra_state, |
| Handle<Name> name, |
| Handle<JSObject> object, |
| Handle<GlobalObject> holder, |
| Handle<PropertyCell> cell, |
| Handle<JSFunction> function); |
| |
| // --- |
| |
| Handle<Code> ComputeCallInitialize(int argc, RelocInfo::Mode mode); |
| |
| Handle<Code> ComputeKeyedCallInitialize(int argc); |
| |
| Handle<Code> ComputeCallPreMonomorphic(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state); |
| |
| Handle<Code> ComputeCallNormal(int argc, |
| Code::Kind kind, |
| Code::ExtraICState state); |
| |
| Handle<Code> ComputeCallArguments(int argc); |
| |
| Handle<Code> ComputeCallMegamorphic(int argc, |
| Code::Kind kind, |
| Code::ExtraICState state); |
| |
| Handle<Code> ComputeCallMiss(int argc, |
| Code::Kind kind, |
| Code::ExtraICState state); |
| |
| // --- |
| |
| Handle<Code> ComputeCompareNil(Handle<Map> receiver_map, |
| CompareNilICStub& stub); |
| |
| // --- |
| |
| Handle<Code> ComputeLoadElementPolymorphic(MapHandleList* receiver_maps); |
| Handle<Code> ComputeStoreElementPolymorphic(MapHandleList* receiver_maps, |
| KeyedAccessStoreMode store_mode, |
| StrictModeFlag strict_mode); |
| |
| Handle<Code> ComputePolymorphicLoadIC(MapHandleList* receiver_maps, |
| CodeHandleList* handlers, |
| int number_of_valid_maps, |
| Handle<Name> name); |
| |
| Handle<Code> ComputePolymorphicStoreIC(MapHandleList* receiver_maps, |
| CodeHandleList* handlers, |
| int number_of_valid_maps, |
| Handle<Name> name, |
| StrictModeFlag strict_mode); |
| |
| // Finds the Code object stored in the Heap::non_monomorphic_cache(). |
| Code* FindCallInitialize(int argc, RelocInfo::Mode mode, Code::Kind kind); |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| Handle<Code> ComputeCallDebugBreak(int argc, Code::Kind kind); |
| |
| Handle<Code> ComputeCallDebugPrepareStepIn(int argc, Code::Kind kind); |
| #endif |
| |
| // Update cache for entry hash(name, map). |
| Code* Set(Name* name, Map* map, Code* code); |
| |
| // Clear the lookup table (@ mark compact collection). |
| void Clear(); |
| |
| // Collect all maps that match the name and flags. |
| void CollectMatchingMaps(SmallMapList* types, |
| Handle<Name> name, |
| Code::Flags flags, |
| Handle<Context> native_context, |
| Zone* zone); |
| |
| // Generate code for probing the stub cache table. |
| // Arguments extra, extra2 and extra3 may be used to pass additional scratch |
| // registers. Set to no_reg if not needed. |
| void GenerateProbe(MacroAssembler* masm, |
| Code::Flags flags, |
| Register receiver, |
| Register name, |
| Register scratch, |
| Register extra, |
| Register extra2 = no_reg, |
| Register extra3 = no_reg); |
| |
| enum Table { |
| kPrimary, |
| kSecondary |
| }; |
| |
| |
| SCTableReference key_reference(StubCache::Table table) { |
| return SCTableReference( |
| reinterpret_cast<Address>(&first_entry(table)->key)); |
| } |
| |
| |
| SCTableReference map_reference(StubCache::Table table) { |
| return SCTableReference( |
| reinterpret_cast<Address>(&first_entry(table)->map)); |
| } |
| |
| |
| SCTableReference value_reference(StubCache::Table table) { |
| return SCTableReference( |
| reinterpret_cast<Address>(&first_entry(table)->value)); |
| } |
| |
| |
| StubCache::Entry* first_entry(StubCache::Table table) { |
| switch (table) { |
| case StubCache::kPrimary: return StubCache::primary_; |
| case StubCache::kSecondary: return StubCache::secondary_; |
| } |
| UNREACHABLE(); |
| return NULL; |
| } |
| |
| Isolate* isolate() { return isolate_; } |
| Heap* heap() { return isolate()->heap(); } |
| Factory* factory() { return isolate()->factory(); } |
| |
| private: |
| explicit StubCache(Isolate* isolate); |
| |
| Handle<Code> ComputeCallInitialize(int argc, |
| RelocInfo::Mode mode, |
| Code::Kind kind); |
| |
| // The stub cache has a primary and secondary level. The two levels have |
| // different hashing algorithms in order to avoid simultaneous collisions |
| // in both caches. Unlike a probing strategy (quadratic or otherwise) the |
| // update strategy on updates is fairly clear and simple: Any existing entry |
| // in the primary cache is moved to the secondary cache, and secondary cache |
| // entries are overwritten. |
| |
| // Hash algorithm for the primary table. This algorithm is replicated in |
| // assembler for every architecture. Returns an index into the table that |
| // is scaled by 1 << kHeapObjectTagSize. |
| static int PrimaryOffset(Name* name, Code::Flags flags, Map* map) { |
| // This works well because the heap object tag size and the hash |
| // shift are equal. Shifting down the length field to get the |
| // hash code would effectively throw away two bits of the hash |
| // code. |
| STATIC_ASSERT(kHeapObjectTagSize == Name::kHashShift); |
| // Compute the hash of the name (use entire hash field). |
| ASSERT(name->HasHashCode()); |
| uint32_t field = name->hash_field(); |
| // Using only the low bits in 64-bit mode is unlikely to increase the |
| // risk of collision even if the heap is spread over an area larger than |
| // 4Gb (and not at all if it isn't). |
| uint32_t map_low32bits = |
| static_cast<uint32_t>(reinterpret_cast<uintptr_t>(map)); |
| // We always set the in_loop bit to zero when generating the lookup code |
| // so do it here too so the hash codes match. |
| uint32_t iflags = |
| (static_cast<uint32_t>(flags) & ~Code::kFlagsNotUsedInLookup); |
| // Base the offset on a simple combination of name, flags, and map. |
| uint32_t key = (map_low32bits + field) ^ iflags; |
| return key & ((kPrimaryTableSize - 1) << kHeapObjectTagSize); |
| } |
| |
| // Hash algorithm for the secondary table. This algorithm is replicated in |
| // assembler for every architecture. Returns an index into the table that |
| // is scaled by 1 << kHeapObjectTagSize. |
| static int SecondaryOffset(Name* name, Code::Flags flags, int seed) { |
| // Use the seed from the primary cache in the secondary cache. |
| uint32_t name_low32bits = |
| static_cast<uint32_t>(reinterpret_cast<uintptr_t>(name)); |
| // We always set the in_loop bit to zero when generating the lookup code |
| // so do it here too so the hash codes match. |
| uint32_t iflags = |
| (static_cast<uint32_t>(flags) & ~Code::kFlagsNotUsedInLookup); |
| uint32_t key = (seed - name_low32bits) + iflags; |
| return key & ((kSecondaryTableSize - 1) << kHeapObjectTagSize); |
| } |
| |
| // Compute the entry for a given offset in exactly the same way as |
| // we do in generated code. We generate an hash code that already |
| // ends in Name::kHashShift 0s. Then we multiply it so it is a multiple |
| // of sizeof(Entry). This makes it easier to avoid making mistakes |
| // in the hashed offset computations. |
| static Entry* entry(Entry* table, int offset) { |
| const int multiplier = sizeof(*table) >> Name::kHashShift; |
| return reinterpret_cast<Entry*>( |
| reinterpret_cast<Address>(table) + offset * multiplier); |
| } |
| |
| static const int kPrimaryTableBits = 11; |
| static const int kPrimaryTableSize = (1 << kPrimaryTableBits); |
| static const int kSecondaryTableBits = 9; |
| static const int kSecondaryTableSize = (1 << kSecondaryTableBits); |
| |
| Entry primary_[kPrimaryTableSize]; |
| Entry secondary_[kSecondaryTableSize]; |
| Isolate* isolate_; |
| |
| friend class Isolate; |
| friend class SCTableReference; |
| |
| DISALLOW_COPY_AND_ASSIGN(StubCache); |
| }; |
| |
| |
| // ------------------------------------------------------------------------ |
| |
| |
| // Support functions for IC stubs for callbacks. |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreCallbackProperty); |
| |
| |
| // Support functions for IC stubs for interceptors. |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorOnly); |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForLoad); |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForCall); |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreInterceptorProperty); |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, CallInterceptorProperty); |
| DECLARE_RUNTIME_FUNCTION(MaybeObject*, KeyedLoadPropertyWithInterceptor); |
| |
| |
| enum PrototypeCheckType { CHECK_ALL_MAPS, SKIP_RECEIVER }; |
| enum IcCheckType { ELEMENT, PROPERTY }; |
| |
| |
| // The stub compilers compile stubs for the stub cache. |
| class StubCompiler BASE_EMBEDDED { |
| public: |
| explicit StubCompiler(Isolate* isolate) |
| : isolate_(isolate), masm_(isolate, NULL, 256), failure_(NULL) { } |
| |
| // Functions to compile either CallIC or KeyedCallIC. The specific kind |
| // is extracted from the code flags. |
| Handle<Code> CompileCallInitialize(Code::Flags flags); |
| Handle<Code> CompileCallPreMonomorphic(Code::Flags flags); |
| Handle<Code> CompileCallNormal(Code::Flags flags); |
| Handle<Code> CompileCallMegamorphic(Code::Flags flags); |
| Handle<Code> CompileCallArguments(Code::Flags flags); |
| Handle<Code> CompileCallMiss(Code::Flags flags); |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| Handle<Code> CompileCallDebugBreak(Code::Flags flags); |
| Handle<Code> CompileCallDebugPrepareStepIn(Code::Flags flags); |
| #endif |
| |
| // Static functions for generating parts of stubs. |
| static void GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, |
| int index, |
| Register prototype); |
| |
| // Generates prototype loading code that uses the objects from the |
| // context we were in when this function was called. If the context |
| // has changed, a jump to miss is performed. This ties the generated |
| // code to a particular context and so must not be used in cases |
| // where the generated code is not allowed to have references to |
| // objects from a context. |
| static void GenerateDirectLoadGlobalFunctionPrototype(MacroAssembler* masm, |
| int index, |
| Register prototype, |
| Label* miss); |
| |
| static void GenerateFastPropertyLoad(MacroAssembler* masm, |
| Register dst, |
| Register src, |
| bool inobject, |
| int index, |
| Representation representation); |
| |
| static void GenerateLoadArrayLength(MacroAssembler* masm, |
| Register receiver, |
| Register scratch, |
| Label* miss_label); |
| |
| static void GenerateLoadStringLength(MacroAssembler* masm, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Label* miss_label, |
| bool support_wrappers); |
| |
| static void GenerateLoadFunctionPrototype(MacroAssembler* masm, |
| Register receiver, |
| Register scratch1, |
| Register scratch2, |
| Label* miss_label); |
| |
| static void TailCallBuiltin(MacroAssembler* masm, Builtins::Name name); |
| |
| // Generates code that verifies that the property holder has not changed |
| // (checking maps of objects in the prototype chain for fast and global |
| // objects or doing negative lookup for slow objects, ensures that the |
| // property cells for global objects are still empty) and checks that the map |
| // of the holder has not changed. If necessary the function also generates |
| // code for security check in case of global object holders. Helps to make |
| // sure that the current IC is still valid. |
| // |
| // The scratch and holder registers are always clobbered, but the object |
| // register is only clobbered if it the same as the holder register. The |
| // function returns a register containing the holder - either object_reg or |
| // holder_reg. |
| // The function can optionally (when save_at_depth != |
| // kInvalidProtoDepth) save the object at the given depth by moving |
| // it to [esp + kPointerSize]. |
| Register CheckPrototypes(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Register holder_reg, |
| Register scratch1, |
| Register scratch2, |
| Handle<Name> name, |
| Label* miss, |
| PrototypeCheckType check = CHECK_ALL_MAPS) { |
| return CheckPrototypes(object, object_reg, holder, holder_reg, scratch1, |
| scratch2, name, kInvalidProtoDepth, miss, check); |
| } |
| |
| Register CheckPrototypes(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Register holder_reg, |
| Register scratch1, |
| Register scratch2, |
| Handle<Name> name, |
| int save_at_depth, |
| Label* miss, |
| PrototypeCheckType check = CHECK_ALL_MAPS); |
| |
| |
| protected: |
| Handle<Code> GetCodeWithFlags(Code::Flags flags, const char* name); |
| Handle<Code> GetCodeWithFlags(Code::Flags flags, Handle<Name> name); |
| |
| MacroAssembler* masm() { return &masm_; } |
| void set_failure(Failure* failure) { failure_ = failure; } |
| |
| static void LookupPostInterceptor(Handle<JSObject> holder, |
| Handle<Name> name, |
| LookupResult* lookup); |
| |
| Isolate* isolate() { return isolate_; } |
| Heap* heap() { return isolate()->heap(); } |
| Factory* factory() { return isolate()->factory(); } |
| |
| static void GenerateTailCall(MacroAssembler* masm, Handle<Code> code); |
| |
| private: |
| Isolate* isolate_; |
| MacroAssembler masm_; |
| Failure* failure_; |
| }; |
| |
| |
| enum FrontendCheckType { PERFORM_INITIAL_CHECKS, SKIP_INITIAL_CHECKS }; |
| |
| |
| class BaseLoadStoreStubCompiler: public StubCompiler { |
| public: |
| BaseLoadStoreStubCompiler(Isolate* isolate, Register* registers) |
| : StubCompiler(isolate), registers_(registers) { } |
| virtual ~BaseLoadStoreStubCompiler() { } |
| |
| Handle<Code> CompileMonomorphicIC(Handle<Map> receiver_map, |
| Handle<Code> handler, |
| Handle<Name> name); |
| |
| Handle<Code> CompilePolymorphicIC(MapHandleList* receiver_maps, |
| CodeHandleList* handlers, |
| Handle<Name> name, |
| Code::StubType type, |
| IcCheckType check); |
| |
| virtual void GenerateNameCheck(Handle<Name> name, |
| Register name_reg, |
| Label* miss) { } |
| |
| static Builtins::Name MissBuiltin(Code::Kind kind) { |
| switch (kind) { |
| case Code::LOAD_IC: return Builtins::kLoadIC_Miss; |
| case Code::STORE_IC: return Builtins::kStoreIC_Miss; |
| case Code::KEYED_LOAD_IC: return Builtins::kKeyedLoadIC_Miss; |
| case Code::KEYED_STORE_IC: return Builtins::kKeyedStoreIC_Miss; |
| default: UNREACHABLE(); |
| } |
| return Builtins::kLoadIC_Miss; |
| } |
| |
| protected: |
| virtual Register HandlerFrontendHeader(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Label* miss) = 0; |
| |
| virtual void HandlerFrontendFooter(Handle<Name> name, |
| Label* success, |
| Label* miss) = 0; |
| |
| Register HandlerFrontend(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Label* success); |
| |
| Handle<Code> GetICCode(Code::Kind kind, |
| Code::StubType type, |
| Handle<Name> name, |
| InlineCacheState state = MONOMORPHIC); |
| |
| virtual Code::ExtraICState extra_state() { return Code::kNoExtraICState; } |
| virtual Logger::LogEventsAndTags log_kind(Handle<Code> code) = 0; |
| virtual void JitEvent(Handle<Name> name, Handle<Code> code) = 0; |
| virtual Code::Kind kind() = 0; |
| virtual Register receiver() = 0; |
| virtual Register name() = 0; |
| virtual Register scratch1() = 0; |
| virtual Register scratch2() = 0; |
| virtual Register scratch3() = 0; |
| |
| Register* registers_; |
| }; |
| |
| |
| class BaseLoadStubCompiler: public BaseLoadStoreStubCompiler { |
| public: |
| BaseLoadStubCompiler(Isolate* isolate, Register* registers) |
| : BaseLoadStoreStubCompiler(isolate, registers) { } |
| virtual ~BaseLoadStubCompiler() { } |
| |
| Handle<Code> CompileLoadField(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| PropertyIndex index, |
| Representation representation); |
| |
| Handle<Code> CompileLoadCallback(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Handle<ExecutableAccessorInfo> callback); |
| |
| Handle<Code> CompileLoadConstant(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Handle<Object> value); |
| |
| Handle<Code> CompileLoadInterceptor(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name); |
| |
| protected: |
| virtual Register HandlerFrontendHeader(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Label* miss); |
| |
| virtual void HandlerFrontendFooter(Handle<Name> name, |
| Label* success, |
| Label* miss); |
| |
| Register CallbackHandlerFrontend(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Label* success, |
| Handle<ExecutableAccessorInfo> callback); |
| void NonexistentHandlerFrontend(Handle<JSObject> object, |
| Handle<JSObject> last, |
| Handle<Name> name, |
| Label* success, |
| Handle<GlobalObject> global); |
| |
| void GenerateLoadField(Register reg, |
| Handle<JSObject> holder, |
| PropertyIndex field, |
| Representation representation); |
| void GenerateLoadConstant(Handle<Object> value); |
| void GenerateLoadCallback(Register reg, |
| Handle<ExecutableAccessorInfo> callback); |
| void GenerateLoadInterceptor(Register holder_reg, |
| Handle<JSObject> object, |
| Handle<JSObject> holder, |
| LookupResult* lookup, |
| Handle<Name> name); |
| void GenerateLoadPostInterceptor(Register reg, |
| Handle<JSObject> interceptor_holder, |
| Handle<Name> name, |
| LookupResult* lookup); |
| |
| Handle<Code> GetCode(Code::Kind kind, |
| Code::StubType type, |
| Handle<Name> name); |
| |
| virtual Register receiver() { return registers_[0]; } |
| virtual Register name() { return registers_[1]; } |
| virtual Register scratch1() { return registers_[2]; } |
| virtual Register scratch2() { return registers_[3]; } |
| virtual Register scratch3() { return registers_[4]; } |
| Register scratch4() { return registers_[5]; } |
| }; |
| |
| |
| class LoadStubCompiler: public BaseLoadStubCompiler { |
| public: |
| explicit LoadStubCompiler(Isolate* isolate) |
| : BaseLoadStubCompiler(isolate, registers()) { } |
| |
| Handle<Code> CompileLoadNonexistent(Handle<JSObject> object, |
| Handle<JSObject> last, |
| Handle<Name> name, |
| Handle<GlobalObject> global); |
| |
| static void GenerateLoadViaGetter(MacroAssembler* masm, |
| Handle<JSFunction> getter); |
| |
| Handle<Code> CompileLoadViaGetter(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Handle<JSFunction> getter); |
| |
| Handle<Code> CompileLoadGlobal(Handle<JSObject> object, |
| Handle<GlobalObject> holder, |
| Handle<PropertyCell> cell, |
| Handle<Name> name, |
| bool is_dont_delete); |
| |
| private: |
| static Register* registers(); |
| virtual Code::Kind kind() { return Code::LOAD_IC; } |
| virtual Logger::LogEventsAndTags log_kind(Handle<Code> code) { |
| if (!code->is_inline_cache_stub()) return Logger::STUB_TAG; |
| return code->ic_state() == MONOMORPHIC |
| ? Logger::LOAD_IC_TAG : Logger::LOAD_POLYMORPHIC_IC_TAG; |
| } |
| virtual void JitEvent(Handle<Name> name, Handle<Code> code); |
| }; |
| |
| |
| class KeyedLoadStubCompiler: public BaseLoadStubCompiler { |
| public: |
| explicit KeyedLoadStubCompiler(Isolate* isolate) |
| : BaseLoadStubCompiler(isolate, registers()) { } |
| |
| Handle<Code> CompileLoadElement(Handle<Map> receiver_map); |
| |
| void CompileElementHandlers(MapHandleList* receiver_maps, |
| CodeHandleList* handlers); |
| |
| static void GenerateLoadDictionaryElement(MacroAssembler* masm); |
| |
| private: |
| static Register* registers(); |
| virtual Code::Kind kind() { return Code::KEYED_LOAD_IC; } |
| virtual Logger::LogEventsAndTags log_kind(Handle<Code> code) { |
| if (!code->is_inline_cache_stub()) return Logger::STUB_TAG; |
| return code->ic_state() == MONOMORPHIC |
| ? Logger::KEYED_LOAD_IC_TAG : Logger::KEYED_LOAD_POLYMORPHIC_IC_TAG; |
| } |
| virtual void JitEvent(Handle<Name> name, Handle<Code> code); |
| virtual void GenerateNameCheck(Handle<Name> name, |
| Register name_reg, |
| Label* miss); |
| }; |
| |
| |
| class BaseStoreStubCompiler: public BaseLoadStoreStubCompiler { |
| public: |
| BaseStoreStubCompiler(Isolate* isolate, |
| StrictModeFlag strict_mode, |
| Register* registers) |
| : BaseLoadStoreStubCompiler(isolate, registers), |
| strict_mode_(strict_mode) { } |
| |
| virtual ~BaseStoreStubCompiler() { } |
| |
| Handle<Code> CompileStoreTransition(Handle<JSObject> object, |
| LookupResult* lookup, |
| Handle<Map> transition, |
| Handle<Name> name); |
| |
| Handle<Code> CompileStoreField(Handle<JSObject> object, |
| LookupResult* lookup, |
| Handle<Name> name); |
| |
| void GenerateNegativeHolderLookup(MacroAssembler* masm, |
| Handle<JSObject> holder, |
| Register holder_reg, |
| Handle<Name> name, |
| Label* miss); |
| |
| void GenerateStoreTransition(MacroAssembler* masm, |
| Handle<JSObject> object, |
| LookupResult* lookup, |
| Handle<Map> transition, |
| Handle<Name> name, |
| Register receiver_reg, |
| Register name_reg, |
| Register value_reg, |
| Register scratch1, |
| Register scratch2, |
| Register scratch3, |
| Label* miss_label, |
| Label* slow); |
| |
| void GenerateStoreField(MacroAssembler* masm, |
| Handle<JSObject> object, |
| LookupResult* lookup, |
| Register receiver_reg, |
| Register name_reg, |
| Register value_reg, |
| Register scratch1, |
| Register scratch2, |
| Label* miss_label); |
| |
| static Builtins::Name MissBuiltin(Code::Kind kind) { |
| switch (kind) { |
| case Code::LOAD_IC: return Builtins::kLoadIC_Miss; |
| case Code::STORE_IC: return Builtins::kStoreIC_Miss; |
| case Code::KEYED_LOAD_IC: return Builtins::kKeyedLoadIC_Miss; |
| case Code::KEYED_STORE_IC: return Builtins::kKeyedStoreIC_Miss; |
| default: UNREACHABLE(); |
| } |
| return Builtins::kLoadIC_Miss; |
| } |
| static Builtins::Name SlowBuiltin(Code::Kind kind) { |
| switch (kind) { |
| case Code::STORE_IC: return Builtins::kStoreIC_Slow; |
| case Code::KEYED_STORE_IC: return Builtins::kKeyedStoreIC_Slow; |
| default: UNREACHABLE(); |
| } |
| return Builtins::kStoreIC_Slow; |
| } |
| |
| protected: |
| virtual Register HandlerFrontendHeader(Handle<JSObject> object, |
| Register object_reg, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Label* miss); |
| |
| virtual void HandlerFrontendFooter(Handle<Name> name, |
| Label* success, |
| Label* miss); |
| Handle<Code> GetCode(Code::Kind kind, |
| Code::StubType type, |
| Handle<Name> name); |
| |
| void GenerateRestoreName(MacroAssembler* masm, |
| Label* label, |
| Handle<Name> name); |
| |
| virtual Register receiver() { return registers_[0]; } |
| virtual Register name() { return registers_[1]; } |
| Register value() { return registers_[2]; } |
| virtual Register scratch1() { return registers_[3]; } |
| virtual Register scratch2() { return registers_[4]; } |
| virtual Register scratch3() { return registers_[5]; } |
| StrictModeFlag strict_mode() { return strict_mode_; } |
| virtual Code::ExtraICState extra_state() { return strict_mode_; } |
| |
| private: |
| StrictModeFlag strict_mode_; |
| }; |
| |
| |
| class StoreStubCompiler: public BaseStoreStubCompiler { |
| public: |
| StoreStubCompiler(Isolate* isolate, StrictModeFlag strict_mode) |
| : BaseStoreStubCompiler(isolate, strict_mode, registers()) { } |
| |
| |
| Handle<Code> CompileStoreCallback(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Handle<ExecutableAccessorInfo> callback); |
| |
| static void GenerateStoreViaSetter(MacroAssembler* masm, |
| Handle<JSFunction> setter); |
| |
| Handle<Code> CompileStoreViaSetter(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Handle<JSFunction> setter); |
| |
| Handle<Code> CompileStoreInterceptor(Handle<JSObject> object, |
| Handle<Name> name); |
| |
| Handle<Code> CompileStoreGlobal(Handle<GlobalObject> object, |
| Handle<PropertyCell> holder, |
| Handle<Name> name); |
| |
| private: |
| static Register* registers(); |
| virtual Code::Kind kind() { return Code::STORE_IC; } |
| virtual Logger::LogEventsAndTags log_kind(Handle<Code> code) { |
| if (!code->is_inline_cache_stub()) return Logger::STUB_TAG; |
| return code->ic_state() == MONOMORPHIC |
| ? Logger::STORE_IC_TAG : Logger::STORE_POLYMORPHIC_IC_TAG; |
| } |
| virtual void JitEvent(Handle<Name> name, Handle<Code> code); |
| }; |
| |
| |
| class KeyedStoreStubCompiler: public BaseStoreStubCompiler { |
| public: |
| KeyedStoreStubCompiler(Isolate* isolate, |
| StrictModeFlag strict_mode, |
| KeyedAccessStoreMode store_mode) |
| : BaseStoreStubCompiler(isolate, strict_mode, registers()), |
| store_mode_(store_mode) { } |
| |
| Handle<Code> CompileStoreElement(Handle<Map> receiver_map); |
| |
| Handle<Code> CompileStorePolymorphic(MapHandleList* receiver_maps, |
| CodeHandleList* handler_stubs, |
| MapHandleList* transitioned_maps); |
| |
| Handle<Code> CompileStoreElementPolymorphic(MapHandleList* receiver_maps); |
| |
| static void GenerateStoreDictionaryElement(MacroAssembler* masm); |
| |
| protected: |
| virtual Code::ExtraICState extra_state() { |
| return Code::ComputeExtraICState(store_mode_, strict_mode()); |
| } |
| |
| private: |
| Register transition_map() { |
| return registers()[3]; |
| } |
| |
| static Register* registers(); |
| virtual Code::Kind kind() { return Code::KEYED_STORE_IC; } |
| virtual Logger::LogEventsAndTags log_kind(Handle<Code> code) { |
| if (!code->is_inline_cache_stub()) return Logger::STUB_TAG; |
| return code->ic_state() == MONOMORPHIC |
| ? Logger::KEYED_STORE_IC_TAG : Logger::KEYED_STORE_POLYMORPHIC_IC_TAG; |
| } |
| virtual void JitEvent(Handle<Name> name, Handle<Code> code); |
| virtual void GenerateNameCheck(Handle<Name> name, |
| Register name_reg, |
| Label* miss); |
| KeyedAccessStoreMode store_mode_; |
| }; |
| |
| |
| // Subset of FUNCTIONS_WITH_ID_LIST with custom constant/global call |
| // IC stubs. |
| #define CUSTOM_CALL_IC_GENERATORS(V) \ |
| V(ArrayPush) \ |
| V(ArrayPop) \ |
| V(StringCharCodeAt) \ |
| V(StringCharAt) \ |
| V(StringFromCharCode) \ |
| V(MathFloor) \ |
| V(MathAbs) \ |
| V(ArrayCode) |
| |
| |
| #define SITE_SPECIFIC_CALL_GENERATORS(V) \ |
| V(ArrayCode) |
| |
| |
| class CallOptimization; |
| |
| class CallStubCompiler: public StubCompiler { |
| public: |
| CallStubCompiler(Isolate* isolate, |
| int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state, |
| InlineCacheHolderFlag cache_holder); |
| |
| Handle<Code> CompileCallField(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| PropertyIndex index, |
| Handle<Name> name); |
| |
| void CompileHandlerFrontend(Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| CheckType check, |
| Label* success); |
| |
| void CompileHandlerBackend(Handle<JSFunction> function); |
| |
| Handle<Code> CompileCallConstant(Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| CheckType check, |
| Handle<JSFunction> function); |
| |
| Handle<Code> CompileCallInterceptor(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name); |
| |
| Handle<Code> CompileCallGlobal(Handle<JSObject> object, |
| Handle<GlobalObject> holder, |
| Handle<PropertyCell> cell, |
| Handle<JSFunction> function, |
| Handle<Name> name); |
| |
| static bool HasCustomCallGenerator(Handle<JSFunction> function); |
| static bool CanBeCached(Handle<JSFunction> function); |
| |
| private: |
| // Compiles a custom call constant/global IC. For constant calls cell is |
| // NULL. Returns an empty handle if there is no custom call code for the |
| // given function. |
| Handle<Code> CompileCustomCall(Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<Cell> cell, |
| Handle<JSFunction> function, |
| Handle<String> name, |
| Code::StubType type); |
| |
| #define DECLARE_CALL_GENERATOR(name) \ |
| Handle<Code> Compile##name##Call(Handle<Object> object, \ |
| Handle<JSObject> holder, \ |
| Handle<Cell> cell, \ |
| Handle<JSFunction> function, \ |
| Handle<String> fname, \ |
| Code::StubType type); |
| CUSTOM_CALL_IC_GENERATORS(DECLARE_CALL_GENERATOR) |
| #undef DECLARE_CALL_GENERATOR |
| |
| Handle<Code> CompileFastApiCall(const CallOptimization& optimization, |
| Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<Cell> cell, |
| Handle<JSFunction> function, |
| Handle<String> name); |
| |
| Handle<Code> GetCode(Code::StubType type, Handle<Name> name); |
| Handle<Code> GetCode(Handle<JSFunction> function); |
| |
| const ParameterCount& arguments() { return arguments_; } |
| |
| void GenerateNameCheck(Handle<Name> name, Label* miss); |
| |
| void GenerateGlobalReceiverCheck(Handle<JSObject> object, |
| Handle<JSObject> holder, |
| Handle<Name> name, |
| Label* miss); |
| |
| // Generates code to load the function from the cell checking that |
| // it still contains the same function. |
| void GenerateLoadFunctionFromCell(Handle<Cell> cell, |
| Handle<JSFunction> function, |
| Label* miss); |
| |
| // Generates a jump to CallIC miss stub. |
| void GenerateMissBranch(); |
| |
| const ParameterCount arguments_; |
| const Code::Kind kind_; |
| const Code::ExtraICState extra_state_; |
| const InlineCacheHolderFlag cache_holder_; |
| }; |
| |
| |
| // Holds information about possible function call optimizations. |
| class CallOptimization BASE_EMBEDDED { |
| public: |
| explicit CallOptimization(LookupResult* lookup); |
| |
| explicit CallOptimization(Handle<JSFunction> function); |
| |
| bool is_constant_call() const { |
| return !constant_function_.is_null(); |
| } |
| |
| Handle<JSFunction> constant_function() const { |
| ASSERT(is_constant_call()); |
| return constant_function_; |
| } |
| |
| bool is_simple_api_call() const { |
| return is_simple_api_call_; |
| } |
| |
| Handle<FunctionTemplateInfo> expected_receiver_type() const { |
| ASSERT(is_simple_api_call()); |
| return expected_receiver_type_; |
| } |
| |
| Handle<CallHandlerInfo> api_call_info() const { |
| ASSERT(is_simple_api_call()); |
| return api_call_info_; |
| } |
| |
| // Returns the depth of the object having the expected type in the |
| // prototype chain between the two arguments. |
| int GetPrototypeDepthOfExpectedType(Handle<JSObject> object, |
| Handle<JSObject> holder) const; |
| |
| private: |
| void Initialize(Handle<JSFunction> function); |
| |
| // Determines whether the given function can be called using the |
| // fast api call builtin. |
| void AnalyzePossibleApiFunction(Handle<JSFunction> function); |
| |
| Handle<JSFunction> constant_function_; |
| bool is_simple_api_call_; |
| Handle<FunctionTemplateInfo> expected_receiver_type_; |
| Handle<CallHandlerInfo> api_call_info_; |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_STUB_CACHE_H_ |
