Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_IC_H_ |
| 6 | #define V8_IC_H_ |
| 7 | |
| 8 | #include "src/ic/ic-state.h" |
| 9 | #include "src/macro-assembler.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 10 | #include "src/messages.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 15 | // |
| 16 | // IC is the base class for LoadIC, StoreIC, KeyedLoadIC, and KeyedStoreIC. |
| 17 | // |
| 18 | class IC { |
| 19 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 20 | // Alias the inline cache state type to make the IC code more readable. |
| 21 | typedef InlineCacheState State; |
| 22 | |
| 23 | // The IC code is either invoked with no extra frames on the stack |
| 24 | // or with a single extra frame for supporting calls. |
| 25 | enum FrameDepth { NO_EXTRA_FRAME = 0, EXTRA_CALL_FRAME = 1 }; |
| 26 | |
| 27 | // Construct the IC structure with the given number of extra |
| 28 | // JavaScript frames on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 29 | IC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | virtual ~IC() {} |
| 31 | |
| 32 | State state() const { return state_; } |
| 33 | inline Address address() const; |
| 34 | |
| 35 | // Compute the current IC state based on the target stub, receiver and name. |
| 36 | void UpdateState(Handle<Object> receiver, Handle<Object> name); |
| 37 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 38 | bool RecomputeHandlerForName(Handle<Object> name); |
| 39 | void MarkRecomputeHandler(Handle<Object> name) { |
| 40 | DCHECK(RecomputeHandlerForName(name)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 41 | old_state_ = state_; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 42 | state_ = RECOMPUTE_HANDLER; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 43 | } |
| 44 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 45 | // Clear the inline cache to initial state. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 46 | static void Clear(Isolate* isolate, Address address, Address constant_pool); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 47 | |
| 48 | #ifdef DEBUG |
| 49 | bool IsLoadStub() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 50 | return kind_ == Code::LOAD_IC || kind_ == Code::KEYED_LOAD_IC; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 51 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 52 | bool IsStoreStub() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 53 | return kind_ == Code::STORE_IC || kind_ == Code::KEYED_STORE_IC; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 55 | bool IsCallStub() const { return kind_ == Code::CALL_IC; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | #endif |
| 57 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 58 | static inline Handle<Map> GetHandlerCacheHolder(Handle<Map> receiver_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 59 | bool receiver_is_holder, |
| 60 | Isolate* isolate, |
| 61 | CacheHolderFlag* flag); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 62 | static inline Handle<Map> GetICCacheHolder(Handle<Map> receiver_map, |
| 63 | Isolate* isolate, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 64 | CacheHolderFlag* flag); |
| 65 | |
| 66 | static bool IsCleared(Code* code) { |
| 67 | InlineCacheState state = code->ic_state(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 68 | return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 69 | } |
| 70 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 71 | static bool IsCleared(FeedbackNexus* nexus) { |
| 72 | InlineCacheState state = nexus->StateFromFeedback(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 73 | return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 74 | } |
| 75 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 76 | static bool ICUseVector(Code::Kind kind) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 77 | return kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC || |
| 78 | kind == Code::CALL_IC || kind == Code::STORE_IC || |
| 79 | kind == Code::KEYED_STORE_IC; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 80 | } |
| 81 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 82 | protected: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 83 | Address fp() const { return fp_; } |
| 84 | Address pc() const { return *pc_address_; } |
| 85 | Isolate* isolate() const { return isolate_; } |
| 86 | |
| 87 | // Get the shared function info of the caller. |
| 88 | SharedFunctionInfo* GetSharedFunctionInfo() const; |
| 89 | // Get the code object of the caller. |
| 90 | Code* GetCode() const; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 91 | |
| 92 | bool AddressIsOptimizedCode() const; |
| 93 | inline bool AddressIsDeoptimizedCode() const; |
| 94 | inline static bool AddressIsDeoptimizedCode(Isolate* isolate, |
| 95 | Address address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 96 | |
| 97 | // Set the call-site target. |
| 98 | inline void set_target(Code* code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 99 | bool is_vector_set() { return vector_set_; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 100 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 101 | bool UseVector() const { |
| 102 | bool use = ICUseVector(kind()); |
| 103 | // If we are supposed to use the nexus, verify the nexus is non-null. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 104 | DCHECK(!use || nexus_ != nullptr); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 105 | return use; |
| 106 | } |
| 107 | |
| 108 | // Configure for most states. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 109 | void ConfigureVectorState(IC::State new_state, Handle<Object> key); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 110 | // Configure the vector for MONOMORPHIC. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 111 | void ConfigureVectorState(Handle<Name> name, Handle<Map> map, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 112 | Handle<Code> handler); |
| 113 | // Configure the vector for POLYMORPHIC. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 114 | void ConfigureVectorState(Handle<Name> name, MapHandleList* maps, |
| 115 | CodeHandleList* handlers); |
| 116 | // Configure the vector for POLYMORPHIC with transitions (only for element |
| 117 | // keyed stores). |
| 118 | void ConfigureVectorState(MapHandleList* maps, |
| 119 | MapHandleList* transitioned_maps, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 120 | CodeHandleList* handlers); |
| 121 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 122 | char TransitionMarkFromState(IC::State state); |
| 123 | void TraceIC(const char* type, Handle<Object> name); |
| 124 | void TraceIC(const char* type, Handle<Object> name, State old_state, |
| 125 | State new_state); |
| 126 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 127 | MaybeHandle<Object> TypeError(MessageTemplate::Template, |
| 128 | Handle<Object> object, Handle<Object> key); |
| 129 | MaybeHandle<Object> ReferenceError(Handle<Name> name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 130 | |
| 131 | // Access the target code for the given IC address. |
| 132 | static inline Code* GetTargetAtAddress(Address address, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 133 | Address constant_pool); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 134 | static inline void SetTargetAtAddress(Address address, Code* target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 135 | Address constant_pool); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 136 | // As a vector-based IC, type feedback must be updated differently. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 137 | static void OnTypeFeedbackChanged(Isolate* isolate, Code* host); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | static void PostPatching(Address address, Code* target, Code* old_target); |
| 139 | |
| 140 | // Compute the handler either by compiling or by retrieving a cached version. |
| 141 | Handle<Code> ComputeHandler(LookupIterator* lookup, |
| 142 | Handle<Object> value = Handle<Code>::null()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 143 | virtual Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) { |
| 144 | UNREACHABLE(); |
| 145 | return Handle<Code>::null(); |
| 146 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | virtual Handle<Code> CompileHandler(LookupIterator* lookup, |
| 148 | Handle<Object> value, |
| 149 | CacheHolderFlag cache_holder) { |
| 150 | UNREACHABLE(); |
| 151 | return Handle<Code>::null(); |
| 152 | } |
| 153 | |
| 154 | void UpdateMonomorphicIC(Handle<Code> handler, Handle<Name> name); |
| 155 | bool UpdatePolymorphicIC(Handle<Name> name, Handle<Code> code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 156 | void UpdateMegamorphicCache(Map* map, Name* name, Code* code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 157 | |
| 158 | void CopyICToMegamorphicCache(Handle<Name> name); |
| 159 | bool IsTransitionOfMonomorphicTarget(Map* source_map, Map* target_map); |
| 160 | void PatchCache(Handle<Name> name, Handle<Code> code); |
| 161 | Code::Kind kind() const { return kind_; } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 162 | bool is_keyed() const { |
| 163 | return kind_ == Code::KEYED_LOAD_IC || kind_ == Code::KEYED_STORE_IC; |
| 164 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 165 | Code::Kind handler_kind() const { |
| 166 | if (kind_ == Code::KEYED_LOAD_IC) return Code::LOAD_IC; |
| 167 | DCHECK(kind_ == Code::LOAD_IC || kind_ == Code::STORE_IC || |
| 168 | kind_ == Code::KEYED_STORE_IC); |
| 169 | return kind_; |
| 170 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 171 | bool ShouldRecomputeHandler(Handle<Object> receiver, Handle<String> name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 172 | |
| 173 | ExtraICState extra_ic_state() const { return extra_ic_state_; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 174 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 175 | Handle<Map> receiver_map() { return receiver_map_; } |
| 176 | void update_receiver_map(Handle<Object> receiver) { |
| 177 | if (receiver->IsSmi()) { |
| 178 | receiver_map_ = isolate_->factory()->heap_number_map(); |
| 179 | } else { |
| 180 | receiver_map_ = handle(HeapObject::cast(*receiver)->map()); |
| 181 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | void TargetMaps(MapHandleList* list) { |
| 185 | FindTargetMaps(); |
| 186 | for (int i = 0; i < target_maps_.length(); i++) { |
| 187 | list->Add(target_maps_.at(i)); |
| 188 | } |
| 189 | } |
| 190 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 191 | Map* FirstTargetMap() { |
| 192 | FindTargetMaps(); |
| 193 | return target_maps_.length() > 0 ? *target_maps_.at(0) : NULL; |
| 194 | } |
| 195 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 196 | Handle<TypeFeedbackVector> vector() const { return nexus()->vector_handle(); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 197 | FeedbackVectorSlot slot() const { return nexus()->slot(); } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 198 | State saved_state() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 199 | return state() == RECOMPUTE_HANDLER ? old_state_ : state(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | template <class NexusClass> |
| 203 | NexusClass* casted_nexus() { |
| 204 | return static_cast<NexusClass*>(nexus_); |
| 205 | } |
| 206 | FeedbackNexus* nexus() const { return nexus_; } |
| 207 | |
| 208 | inline Code* get_host(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 209 | inline Code* target() const; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 210 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 211 | private: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 212 | inline Address constant_pool() const; |
| 213 | inline Address raw_constant_pool() const; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 214 | |
| 215 | void FindTargetMaps() { |
| 216 | if (target_maps_set_) return; |
| 217 | target_maps_set_ = true; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 218 | DCHECK(UseVector()); |
| 219 | nexus()->ExtractMaps(&target_maps_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | // Frame pointer for the frame that uses (calls) the IC. |
| 223 | Address fp_; |
| 224 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 225 | // All access to the program counter and constant pool of an IC structure is |
| 226 | // indirect to make the code GC safe. This feature is crucial since |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 227 | // GetProperty and SetProperty are called and they in turn might |
| 228 | // invoke the garbage collector. |
| 229 | Address* pc_address_; |
| 230 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 231 | // The constant pool of the code which originally called the IC (which might |
| 232 | // be for the breakpointed copy of the original code). |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 233 | Address* constant_pool_address_; |
| 234 | |
| 235 | Isolate* isolate_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 236 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 237 | bool vector_set_; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 238 | State old_state_; // For saving if we marked as prototype failure. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 239 | State state_; |
| 240 | Code::Kind kind_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 241 | Handle<Map> receiver_map_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 242 | MaybeHandle<Code> maybe_handler_; |
| 243 | |
| 244 | ExtraICState extra_ic_state_; |
| 245 | MapHandleList target_maps_; |
| 246 | bool target_maps_set_; |
| 247 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 248 | FeedbackNexus* nexus_; |
| 249 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 250 | DISALLOW_IMPLICIT_CONSTRUCTORS(IC); |
| 251 | }; |
| 252 | |
| 253 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 254 | class CallIC : public IC { |
| 255 | public: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 256 | CallIC(Isolate* isolate, CallICNexus* nexus) |
| 257 | : IC(EXTRA_CALL_FRAME, isolate, nexus) { |
| 258 | DCHECK(nexus != NULL); |
| 259 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 260 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 261 | void HandleMiss(Handle<Object> function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 262 | |
| 263 | // Code generator routines. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 264 | static Handle<Code> initialize_stub_in_optimized_code( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 265 | Isolate* isolate, int argc, ConvertReceiverMode mode, |
| 266 | TailCallMode tail_call_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 267 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 268 | static void Clear(Isolate* isolate, Code* host, CallICNexus* nexus); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 269 | }; |
| 270 | |
| 271 | |
| 272 | class LoadIC : public IC { |
| 273 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 274 | TypeofMode typeof_mode() const { |
| 275 | return LoadICState::GetTypeofMode(extra_ic_state()); |
| 276 | } |
| 277 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 278 | LoadIC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL) |
| 279 | : IC(depth, isolate, nexus) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 280 | DCHECK(nexus != NULL); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 281 | DCHECK(IsLoadStub()); |
| 282 | } |
| 283 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 284 | bool ShouldThrowReferenceError(Handle<Object> receiver) { |
| 285 | return receiver->IsJSGlobalObject() && typeof_mode() == NOT_INSIDE_TYPEOF; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | // Code generator routines. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 289 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 290 | static void GenerateMiss(MacroAssembler* masm); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 291 | static void GenerateRuntimeGetProperty(MacroAssembler* masm); |
| 292 | static void GenerateNormal(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 293 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 294 | static Handle<Code> initialize_stub_in_optimized_code( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 295 | Isolate* isolate, ExtraICState extra_state, State initialization_state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 296 | |
| 297 | MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Object> object, |
| 298 | Handle<Name> name); |
| 299 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 300 | static void Clear(Isolate* isolate, Code* host, LoadICNexus* nexus); |
| 301 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | protected: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 303 | Handle<Code> slow_stub() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 304 | return isolate()->builtins()->LoadIC_Slow(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 305 | } |
| 306 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 307 | // Update the inline cache and the global stub cache based on the |
| 308 | // lookup result. |
| 309 | void UpdateCaches(LookupIterator* lookup); |
| 310 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 311 | Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) override; |
| 312 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 313 | Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> unused, |
| 314 | CacheHolderFlag cache_holder) override; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 315 | |
| 316 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 317 | Handle<Code> SimpleFieldLoad(FieldIndex index); |
| 318 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 319 | friend class IC; |
| 320 | }; |
| 321 | |
| 322 | |
| 323 | class KeyedLoadIC : public LoadIC { |
| 324 | public: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 325 | KeyedLoadIC(FrameDepth depth, Isolate* isolate, |
| 326 | KeyedLoadICNexus* nexus = NULL) |
| 327 | : LoadIC(depth, isolate, nexus) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 328 | DCHECK(nexus != NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | } |
| 330 | |
| 331 | MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Object> object, |
| 332 | Handle<Object> key); |
| 333 | |
| 334 | // Code generator routines. |
| 335 | static void GenerateMiss(MacroAssembler* masm); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 336 | static void GenerateRuntimeGetProperty(MacroAssembler* masm); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 337 | static void GenerateMegamorphic(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 338 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 339 | static Handle<Code> initialize_stub_in_optimized_code( |
| 340 | Isolate* isolate, State initialization_state, ExtraICState extra_state); |
| 341 | static Handle<Code> ChooseMegamorphicStub(Isolate* isolate, |
| 342 | ExtraICState extra_state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 343 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 344 | static void Clear(Isolate* isolate, Code* host, KeyedLoadICNexus* nexus); |
| 345 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 346 | protected: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 347 | // receiver is HeapObject because it could be a String or a JSObject |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 348 | void UpdateLoadElement(Handle<HeapObject> receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 349 | |
| 350 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 351 | friend class IC; |
| 352 | }; |
| 353 | |
| 354 | |
| 355 | class StoreIC : public IC { |
| 356 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 357 | StoreIC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL) |
| 358 | : IC(depth, isolate, nexus) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 359 | DCHECK(IsStoreStub()); |
| 360 | } |
| 361 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 362 | LanguageMode language_mode() const { |
| 363 | return StoreICState::GetLanguageMode(extra_ic_state()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | // Code generators for stub routines. Only called once at startup. |
| 367 | static void GenerateSlow(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 368 | static void GenerateMiss(MacroAssembler* masm); |
| 369 | static void GenerateMegamorphic(MacroAssembler* masm); |
| 370 | static void GenerateNormal(MacroAssembler* masm); |
| 371 | static void GenerateRuntimeSetProperty(MacroAssembler* masm, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 372 | LanguageMode language_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 373 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 374 | static Handle<Code> initialize_stub_in_optimized_code( |
| 375 | Isolate* isolate, LanguageMode language_mode, State initialization_state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 376 | |
| 377 | MUST_USE_RESULT MaybeHandle<Object> Store( |
| 378 | Handle<Object> object, Handle<Name> name, Handle<Object> value, |
| 379 | JSReceiver::StoreFromKeyed store_mode = |
| 380 | JSReceiver::CERTAINLY_NOT_STORE_FROM_KEYED); |
| 381 | |
| 382 | bool LookupForWrite(LookupIterator* it, Handle<Object> value, |
| 383 | JSReceiver::StoreFromKeyed store_mode); |
| 384 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 385 | static void Clear(Isolate* isolate, Code* host, StoreICNexus* nexus); |
| 386 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 387 | protected: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 388 | // Stub accessors. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 389 | Handle<Code> slow_stub() const; |
| 390 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 391 | // Update the inline cache and the global stub cache based on the |
| 392 | // lookup result. |
| 393 | void UpdateCaches(LookupIterator* lookup, Handle<Object> value, |
| 394 | JSReceiver::StoreFromKeyed store_mode); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 395 | Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) override; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 396 | Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> value, |
| 397 | CacheHolderFlag cache_holder) override; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 398 | |
| 399 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 400 | friend class IC; |
| 401 | }; |
| 402 | |
| 403 | |
| 404 | enum KeyedStoreCheckMap { kDontCheckMap, kCheckMap }; |
| 405 | |
| 406 | |
| 407 | enum KeyedStoreIncrementLength { kDontIncrementLength, kIncrementLength }; |
| 408 | |
| 409 | |
| 410 | class KeyedStoreIC : public StoreIC { |
| 411 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 412 | KeyedAccessStoreMode GetKeyedAccessStoreMode() { |
| 413 | return casted_nexus<KeyedStoreICNexus>()->GetKeyedAccessStoreMode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 414 | } |
| 415 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 416 | KeyedStoreIC(FrameDepth depth, Isolate* isolate, |
| 417 | KeyedStoreICNexus* nexus = NULL) |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 418 | : StoreIC(depth, isolate, nexus) {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 419 | |
| 420 | MUST_USE_RESULT MaybeHandle<Object> Store(Handle<Object> object, |
| 421 | Handle<Object> name, |
| 422 | Handle<Object> value); |
| 423 | |
| 424 | // Code generators for stub routines. Only called once at startup. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 425 | static void GenerateMiss(MacroAssembler* masm); |
| 426 | static void GenerateSlow(MacroAssembler* masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 427 | static void GenerateMegamorphic(MacroAssembler* masm, |
| 428 | LanguageMode language_mode); |
| 429 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 430 | static Handle<Code> initialize_stub_in_optimized_code( |
| 431 | Isolate* isolate, LanguageMode language_mode, State initialization_state); |
| 432 | static Handle<Code> ChooseMegamorphicStub(Isolate* isolate, |
| 433 | ExtraICState extra_state); |
| 434 | |
| 435 | static void Clear(Isolate* isolate, Code* host, KeyedStoreICNexus* nexus); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 436 | |
| 437 | protected: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 438 | void UpdateStoreElement(Handle<Map> receiver_map, |
| 439 | KeyedAccessStoreMode store_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 440 | |
| 441 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 442 | Handle<Map> ComputeTransitionedMap(Handle<Map> map, |
| 443 | KeyedAccessStoreMode store_mode); |
| 444 | |
| 445 | friend class IC; |
| 446 | }; |
| 447 | |
| 448 | |
| 449 | // Type Recording BinaryOpIC, that records the types of the inputs and outputs. |
| 450 | class BinaryOpIC : public IC { |
| 451 | public: |
| 452 | explicit BinaryOpIC(Isolate* isolate) : IC(EXTRA_CALL_FRAME, isolate) {} |
| 453 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 454 | MaybeHandle<Object> Transition(Handle<AllocationSite> allocation_site, |
| 455 | Handle<Object> left, |
| 456 | Handle<Object> right) WARN_UNUSED_RESULT; |
| 457 | }; |
| 458 | |
| 459 | |
| 460 | class CompareIC : public IC { |
| 461 | public: |
| 462 | CompareIC(Isolate* isolate, Token::Value op) |
| 463 | : IC(EXTRA_CALL_FRAME, isolate), op_(op) {} |
| 464 | |
| 465 | // Update the inline cache for the given operands. |
| 466 | Code* UpdateCaches(Handle<Object> x, Handle<Object> y); |
| 467 | |
| 468 | // Helper function for computing the condition for a compare operation. |
| 469 | static Condition ComputeCondition(Token::Value op); |
| 470 | |
| 471 | // Factory method for getting an uninitialized compare stub. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 472 | static Handle<Code> GetUninitialized(Isolate* isolate, Token::Value op); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 473 | |
| 474 | private: |
| 475 | static bool HasInlinedSmiCode(Address address); |
| 476 | |
| 477 | bool strict() const { return op_ == Token::EQ_STRICT; } |
| 478 | Condition GetCondition() const { return ComputeCondition(op_); } |
| 479 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 480 | static Code* GetRawUninitialized(Isolate* isolate, Token::Value op); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 481 | |
| 482 | static void Clear(Isolate* isolate, Address address, Code* target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 483 | Address constant_pool); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 484 | |
| 485 | Token::Value op_; |
| 486 | |
| 487 | friend class IC; |
| 488 | }; |
| 489 | |
| 490 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 491 | class ToBooleanIC : public IC { |
| 492 | public: |
| 493 | explicit ToBooleanIC(Isolate* isolate) : IC(EXTRA_CALL_FRAME, isolate) {} |
| 494 | |
| 495 | Handle<Object> ToBoolean(Handle<Object> object); |
| 496 | }; |
| 497 | |
| 498 | |
| 499 | // Helper for BinaryOpIC and CompareIC. |
| 500 | enum InlinedSmiCheck { ENABLE_INLINED_SMI_CHECK, DISABLE_INLINED_SMI_CHECK }; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 501 | void PatchInlinedSmiCode(Isolate* isolate, Address address, |
| 502 | InlinedSmiCheck check); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 503 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 504 | } // namespace internal |
| 505 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 506 | |
| 507 | #endif // V8_IC_H_ |