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 | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 50 | return kind_ == Code::LOAD_IC || kind_ == Code::LOAD_GLOBAL_IC || |
| 51 | kind_ == Code::KEYED_LOAD_IC; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 52 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 53 | bool IsStoreStub() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 54 | return kind_ == Code::STORE_IC || kind_ == Code::KEYED_STORE_IC; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 55 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 56 | bool IsCallStub() const { return kind_ == Code::CALL_IC; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 57 | #endif |
| 58 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 59 | static inline Handle<Map> GetHandlerCacheHolder(Handle<Map> receiver_map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 60 | bool receiver_is_holder, |
| 61 | Isolate* isolate, |
| 62 | CacheHolderFlag* flag); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 63 | static inline Handle<Map> GetICCacheHolder(Handle<Map> receiver_map, |
| 64 | Isolate* isolate, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 65 | CacheHolderFlag* flag); |
| 66 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 67 | static bool IsCleared(FeedbackNexus* nexus) { |
| 68 | InlineCacheState state = nexus->StateFromFeedback(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 69 | return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 70 | } |
| 71 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 72 | static bool ICUseVector(Code::Kind kind) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 73 | return kind == Code::LOAD_IC || kind == Code::LOAD_GLOBAL_IC || |
| 74 | kind == Code::KEYED_LOAD_IC || kind == Code::CALL_IC || |
| 75 | kind == Code::STORE_IC || kind == Code::KEYED_STORE_IC; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 76 | } |
| 77 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 78 | static InlineCacheState StateFromCode(Code* code); |
| 79 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 80 | protected: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 81 | Address fp() const { return fp_; } |
| 82 | Address pc() const { return *pc_address_; } |
| 83 | Isolate* isolate() const { return isolate_; } |
| 84 | |
| 85 | // Get the shared function info of the caller. |
| 86 | SharedFunctionInfo* GetSharedFunctionInfo() const; |
| 87 | // Get the code object of the caller. |
| 88 | Code* GetCode() const; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 89 | |
| 90 | bool AddressIsOptimizedCode() const; |
| 91 | inline bool AddressIsDeoptimizedCode() const; |
| 92 | inline static bool AddressIsDeoptimizedCode(Isolate* isolate, |
| 93 | Address address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 94 | |
| 95 | // Set the call-site target. |
| 96 | inline void set_target(Code* code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 97 | bool is_vector_set() { return vector_set_; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 98 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 99 | bool UseVector() const { |
| 100 | bool use = ICUseVector(kind()); |
| 101 | // 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] | 102 | DCHECK(!use || nexus_ != nullptr); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 103 | return use; |
| 104 | } |
| 105 | |
| 106 | // Configure for most states. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 107 | void ConfigureVectorState(IC::State new_state, Handle<Object> key); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 108 | // Configure the vector for MONOMORPHIC. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 109 | void ConfigureVectorState(Handle<Name> name, Handle<Map> map, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 110 | Handle<Code> handler); |
| 111 | // Configure the vector for POLYMORPHIC. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 112 | void ConfigureVectorState(Handle<Name> name, MapHandleList* maps, |
| 113 | CodeHandleList* handlers); |
| 114 | // Configure the vector for POLYMORPHIC with transitions (only for element |
| 115 | // keyed stores). |
| 116 | void ConfigureVectorState(MapHandleList* maps, |
| 117 | MapHandleList* transitioned_maps, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 118 | CodeHandleList* handlers); |
| 119 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 120 | char TransitionMarkFromState(IC::State state); |
| 121 | void TraceIC(const char* type, Handle<Object> name); |
| 122 | void TraceIC(const char* type, Handle<Object> name, State old_state, |
| 123 | State new_state); |
| 124 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 125 | MaybeHandle<Object> TypeError(MessageTemplate::Template, |
| 126 | Handle<Object> object, Handle<Object> key); |
| 127 | MaybeHandle<Object> ReferenceError(Handle<Name> name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 128 | |
| 129 | // Access the target code for the given IC address. |
| 130 | static inline Code* GetTargetAtAddress(Address address, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 131 | Address constant_pool); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 132 | static inline void SetTargetAtAddress(Address address, Code* target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 133 | Address constant_pool); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 134 | // As a vector-based IC, type feedback must be updated differently. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 135 | static void OnTypeFeedbackChanged(Isolate* isolate, Code* host); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 136 | static void PostPatching(Address address, Code* target, Code* old_target); |
| 137 | |
| 138 | // Compute the handler either by compiling or by retrieving a cached version. |
| 139 | Handle<Code> ComputeHandler(LookupIterator* lookup, |
| 140 | Handle<Object> value = Handle<Code>::null()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 141 | virtual Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) { |
| 142 | UNREACHABLE(); |
| 143 | return Handle<Code>::null(); |
| 144 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 145 | virtual Handle<Code> CompileHandler(LookupIterator* lookup, |
| 146 | Handle<Object> value, |
| 147 | CacheHolderFlag cache_holder) { |
| 148 | UNREACHABLE(); |
| 149 | return Handle<Code>::null(); |
| 150 | } |
| 151 | |
| 152 | void UpdateMonomorphicIC(Handle<Code> handler, Handle<Name> name); |
| 153 | bool UpdatePolymorphicIC(Handle<Name> name, Handle<Code> code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 154 | void UpdateMegamorphicCache(Map* map, Name* name, Code* code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 155 | |
| 156 | void CopyICToMegamorphicCache(Handle<Name> name); |
| 157 | bool IsTransitionOfMonomorphicTarget(Map* source_map, Map* target_map); |
| 158 | void PatchCache(Handle<Name> name, Handle<Code> code); |
| 159 | Code::Kind kind() const { return kind_; } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 160 | bool is_keyed() const { |
| 161 | return kind_ == Code::KEYED_LOAD_IC || kind_ == Code::KEYED_STORE_IC; |
| 162 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 163 | Code::Kind handler_kind() const { |
| 164 | if (kind_ == Code::KEYED_LOAD_IC) return Code::LOAD_IC; |
| 165 | DCHECK(kind_ == Code::LOAD_IC || kind_ == Code::STORE_IC || |
| 166 | kind_ == Code::KEYED_STORE_IC); |
| 167 | return kind_; |
| 168 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 169 | bool ShouldRecomputeHandler(Handle<Object> receiver, Handle<String> name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 170 | |
| 171 | ExtraICState extra_ic_state() const { return extra_ic_state_; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 172 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 173 | Handle<Map> receiver_map() { return receiver_map_; } |
| 174 | void update_receiver_map(Handle<Object> receiver) { |
| 175 | if (receiver->IsSmi()) { |
| 176 | receiver_map_ = isolate_->factory()->heap_number_map(); |
| 177 | } else { |
| 178 | receiver_map_ = handle(HeapObject::cast(*receiver)->map()); |
| 179 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | void TargetMaps(MapHandleList* list) { |
| 183 | FindTargetMaps(); |
| 184 | for (int i = 0; i < target_maps_.length(); i++) { |
| 185 | list->Add(target_maps_.at(i)); |
| 186 | } |
| 187 | } |
| 188 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 189 | Map* FirstTargetMap() { |
| 190 | FindTargetMaps(); |
| 191 | return target_maps_.length() > 0 ? *target_maps_.at(0) : NULL; |
| 192 | } |
| 193 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 194 | Handle<TypeFeedbackVector> vector() const { return nexus()->vector_handle(); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 195 | FeedbackVectorSlot slot() const { return nexus()->slot(); } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 196 | State saved_state() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 197 | return state() == RECOMPUTE_HANDLER ? old_state_ : state(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | template <class NexusClass> |
| 201 | NexusClass* casted_nexus() { |
| 202 | return static_cast<NexusClass*>(nexus_); |
| 203 | } |
| 204 | FeedbackNexus* nexus() const { return nexus_; } |
| 205 | |
| 206 | inline Code* get_host(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 207 | inline Code* target() const; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 208 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 209 | private: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 210 | inline Address constant_pool() const; |
| 211 | inline Address raw_constant_pool() const; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 212 | |
| 213 | void FindTargetMaps() { |
| 214 | if (target_maps_set_) return; |
| 215 | target_maps_set_ = true; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 216 | DCHECK(UseVector()); |
| 217 | nexus()->ExtractMaps(&target_maps_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | // Frame pointer for the frame that uses (calls) the IC. |
| 221 | Address fp_; |
| 222 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 223 | // All access to the program counter and constant pool of an IC structure is |
| 224 | // indirect to make the code GC safe. This feature is crucial since |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 225 | // GetProperty and SetProperty are called and they in turn might |
| 226 | // invoke the garbage collector. |
| 227 | Address* pc_address_; |
| 228 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 229 | // The constant pool of the code which originally called the IC (which might |
| 230 | // be for the breakpointed copy of the original code). |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 231 | Address* constant_pool_address_; |
| 232 | |
| 233 | Isolate* isolate_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 234 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 235 | bool vector_set_; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 236 | State old_state_; // For saving if we marked as prototype failure. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 237 | State state_; |
| 238 | Code::Kind kind_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 239 | Handle<Map> receiver_map_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 240 | MaybeHandle<Code> maybe_handler_; |
| 241 | |
| 242 | ExtraICState extra_ic_state_; |
| 243 | MapHandleList target_maps_; |
| 244 | bool target_maps_set_; |
| 245 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 246 | FeedbackNexus* nexus_; |
| 247 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 248 | DISALLOW_IMPLICIT_CONSTRUCTORS(IC); |
| 249 | }; |
| 250 | |
| 251 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 252 | class CallIC : public IC { |
| 253 | public: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 254 | CallIC(Isolate* isolate, CallICNexus* nexus) |
| 255 | : IC(EXTRA_CALL_FRAME, isolate, nexus) { |
| 256 | DCHECK(nexus != NULL); |
| 257 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 258 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 259 | void HandleMiss(Handle<Object> function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 260 | |
| 261 | // Code generator routines. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 262 | static Handle<Code> initialize_stub_in_optimized_code( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 263 | Isolate* isolate, int argc, ConvertReceiverMode mode, |
| 264 | TailCallMode tail_call_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 265 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 266 | static void Clear(Isolate* isolate, Code* host, CallICNexus* nexus); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 267 | }; |
| 268 | |
| 269 | |
| 270 | class LoadIC : public IC { |
| 271 | public: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 272 | LoadIC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL) |
| 273 | : IC(depth, isolate, nexus) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 274 | DCHECK(nexus != NULL); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 275 | DCHECK(IsLoadStub()); |
| 276 | } |
| 277 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 278 | bool ShouldThrowReferenceError() const { |
| 279 | return kind() == Code::LOAD_GLOBAL_IC && |
| 280 | LoadGlobalICState::GetTypeofMode(extra_ic_state()) == |
| 281 | NOT_INSIDE_TYPEOF; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | // Code generator routines. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 285 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 286 | static void GenerateMiss(MacroAssembler* masm); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 287 | static void GenerateRuntimeGetProperty(MacroAssembler* masm); |
| 288 | static void GenerateNormal(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 289 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 290 | static Handle<Code> initialize_stub_in_optimized_code(Isolate* isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 291 | |
| 292 | MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Object> object, |
| 293 | Handle<Name> name); |
| 294 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 295 | static void Clear(Isolate* isolate, Code* host, LoadICNexus* nexus); |
| 296 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 297 | protected: |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 298 | virtual Handle<Code> slow_stub() const { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 299 | return isolate()->builtins()->LoadIC_Slow(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 300 | } |
| 301 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | // Update the inline cache and the global stub cache based on the |
| 303 | // lookup result. |
| 304 | void UpdateCaches(LookupIterator* lookup); |
| 305 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 306 | Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) override; |
| 307 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 308 | Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> unused, |
| 309 | CacheHolderFlag cache_holder) override; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 310 | |
| 311 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 312 | Handle<Code> SimpleFieldLoad(FieldIndex index); |
| 313 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 314 | friend class IC; |
| 315 | }; |
| 316 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 317 | class LoadGlobalIC : public LoadIC { |
| 318 | public: |
| 319 | LoadGlobalIC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL) |
| 320 | : LoadIC(depth, isolate, nexus) {} |
| 321 | |
| 322 | static Handle<Code> initialize_stub_in_optimized_code( |
| 323 | Isolate* isolate, ExtraICState extra_state); |
| 324 | |
| 325 | MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Name> name); |
| 326 | |
| 327 | static void Clear(Isolate* isolate, Code* host, LoadGlobalICNexus* nexus); |
| 328 | |
| 329 | protected: |
| 330 | Handle<Code> slow_stub() const override { |
| 331 | return isolate()->builtins()->LoadGlobalIC_Slow(); |
| 332 | } |
| 333 | }; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 334 | |
| 335 | class KeyedLoadIC : public LoadIC { |
| 336 | public: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 337 | KeyedLoadIC(FrameDepth depth, Isolate* isolate, |
| 338 | KeyedLoadICNexus* nexus = NULL) |
| 339 | : LoadIC(depth, isolate, nexus) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 340 | DCHECK(nexus != NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Object> object, |
| 344 | Handle<Object> key); |
| 345 | |
| 346 | // Code generator routines. |
| 347 | static void GenerateMiss(MacroAssembler* masm); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 348 | static void GenerateRuntimeGetProperty(MacroAssembler* masm); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 349 | static void GenerateMegamorphic(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 350 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 351 | static Handle<Code> initialize_stub_in_optimized_code( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 352 | Isolate* isolate, ExtraICState extra_state); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 353 | static Handle<Code> ChooseMegamorphicStub(Isolate* isolate, |
| 354 | ExtraICState extra_state); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 355 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 356 | static void Clear(Isolate* isolate, Code* host, KeyedLoadICNexus* nexus); |
| 357 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 358 | protected: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 359 | // receiver is HeapObject because it could be a String or a JSObject |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 360 | void UpdateLoadElement(Handle<HeapObject> receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 361 | |
| 362 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 363 | friend class IC; |
| 364 | }; |
| 365 | |
| 366 | |
| 367 | class StoreIC : public IC { |
| 368 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 369 | StoreIC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus = NULL) |
| 370 | : IC(depth, isolate, nexus) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 371 | DCHECK(IsStoreStub()); |
| 372 | } |
| 373 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 374 | LanguageMode language_mode() const { |
| 375 | return StoreICState::GetLanguageMode(extra_ic_state()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | // Code generators for stub routines. Only called once at startup. |
| 379 | static void GenerateSlow(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 380 | static void GenerateMiss(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 381 | static void GenerateNormal(MacroAssembler* masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 382 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 383 | static Handle<Code> initialize_stub_in_optimized_code( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 384 | Isolate* isolate, LanguageMode language_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 385 | |
| 386 | MUST_USE_RESULT MaybeHandle<Object> Store( |
| 387 | Handle<Object> object, Handle<Name> name, Handle<Object> value, |
| 388 | JSReceiver::StoreFromKeyed store_mode = |
| 389 | JSReceiver::CERTAINLY_NOT_STORE_FROM_KEYED); |
| 390 | |
| 391 | bool LookupForWrite(LookupIterator* it, Handle<Object> value, |
| 392 | JSReceiver::StoreFromKeyed store_mode); |
| 393 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 394 | static void Clear(Isolate* isolate, Code* host, StoreICNexus* nexus); |
| 395 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 396 | protected: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 397 | // Stub accessors. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 398 | Handle<Code> slow_stub() const { |
| 399 | return isolate()->builtins()->StoreIC_Slow(); |
| 400 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 401 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 402 | // Update the inline cache and the global stub cache based on the |
| 403 | // lookup result. |
| 404 | void UpdateCaches(LookupIterator* lookup, Handle<Object> value, |
| 405 | JSReceiver::StoreFromKeyed store_mode); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 406 | Handle<Code> GetMapIndependentHandler(LookupIterator* lookup) override; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 407 | Handle<Code> CompileHandler(LookupIterator* lookup, Handle<Object> value, |
| 408 | CacheHolderFlag cache_holder) override; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 409 | |
| 410 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 411 | friend class IC; |
| 412 | }; |
| 413 | |
| 414 | |
| 415 | enum KeyedStoreCheckMap { kDontCheckMap, kCheckMap }; |
| 416 | |
| 417 | |
| 418 | enum KeyedStoreIncrementLength { kDontIncrementLength, kIncrementLength }; |
| 419 | |
| 420 | |
| 421 | class KeyedStoreIC : public StoreIC { |
| 422 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 423 | KeyedAccessStoreMode GetKeyedAccessStoreMode() { |
| 424 | return casted_nexus<KeyedStoreICNexus>()->GetKeyedAccessStoreMode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 425 | } |
| 426 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 427 | KeyedStoreIC(FrameDepth depth, Isolate* isolate, |
| 428 | KeyedStoreICNexus* nexus = NULL) |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 429 | : StoreIC(depth, isolate, nexus) {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 430 | |
| 431 | MUST_USE_RESULT MaybeHandle<Object> Store(Handle<Object> object, |
| 432 | Handle<Object> name, |
| 433 | Handle<Object> value); |
| 434 | |
| 435 | // Code generators for stub routines. Only called once at startup. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 436 | static void GenerateMiss(MacroAssembler* masm); |
| 437 | static void GenerateSlow(MacroAssembler* masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 438 | static void GenerateMegamorphic(MacroAssembler* masm, |
| 439 | LanguageMode language_mode); |
| 440 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 441 | static Handle<Code> initialize_stub_in_optimized_code( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 442 | Isolate* isolate, LanguageMode language_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 443 | static Handle<Code> ChooseMegamorphicStub(Isolate* isolate, |
| 444 | ExtraICState extra_state); |
| 445 | |
| 446 | static void Clear(Isolate* isolate, Code* host, KeyedStoreICNexus* nexus); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 447 | |
| 448 | protected: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 449 | void UpdateStoreElement(Handle<Map> receiver_map, |
| 450 | KeyedAccessStoreMode store_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 451 | |
| 452 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 453 | Handle<Map> ComputeTransitionedMap(Handle<Map> map, |
| 454 | KeyedAccessStoreMode store_mode); |
| 455 | |
| 456 | friend class IC; |
| 457 | }; |
| 458 | |
| 459 | |
| 460 | // Type Recording BinaryOpIC, that records the types of the inputs and outputs. |
| 461 | class BinaryOpIC : public IC { |
| 462 | public: |
| 463 | explicit BinaryOpIC(Isolate* isolate) : IC(EXTRA_CALL_FRAME, isolate) {} |
| 464 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 465 | MaybeHandle<Object> Transition(Handle<AllocationSite> allocation_site, |
| 466 | Handle<Object> left, |
| 467 | Handle<Object> right) WARN_UNUSED_RESULT; |
| 468 | }; |
| 469 | |
| 470 | |
| 471 | class CompareIC : public IC { |
| 472 | public: |
| 473 | CompareIC(Isolate* isolate, Token::Value op) |
| 474 | : IC(EXTRA_CALL_FRAME, isolate), op_(op) {} |
| 475 | |
| 476 | // Update the inline cache for the given operands. |
| 477 | Code* UpdateCaches(Handle<Object> x, Handle<Object> y); |
| 478 | |
| 479 | // Helper function for computing the condition for a compare operation. |
| 480 | static Condition ComputeCondition(Token::Value op); |
| 481 | |
| 482 | // Factory method for getting an uninitialized compare stub. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 483 | static Handle<Code> GetUninitialized(Isolate* isolate, Token::Value op); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 484 | |
| 485 | private: |
| 486 | static bool HasInlinedSmiCode(Address address); |
| 487 | |
| 488 | bool strict() const { return op_ == Token::EQ_STRICT; } |
| 489 | Condition GetCondition() const { return ComputeCondition(op_); } |
| 490 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 491 | static Code* GetRawUninitialized(Isolate* isolate, Token::Value op); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 492 | |
| 493 | static void Clear(Isolate* isolate, Address address, Code* target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 494 | Address constant_pool); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 495 | |
| 496 | Token::Value op_; |
| 497 | |
| 498 | friend class IC; |
| 499 | }; |
| 500 | |
| 501 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 502 | class ToBooleanIC : public IC { |
| 503 | public: |
| 504 | explicit ToBooleanIC(Isolate* isolate) : IC(EXTRA_CALL_FRAME, isolate) {} |
| 505 | |
| 506 | Handle<Object> ToBoolean(Handle<Object> object); |
| 507 | }; |
| 508 | |
| 509 | |
| 510 | // Helper for BinaryOpIC and CompareIC. |
| 511 | enum InlinedSmiCheck { ENABLE_INLINED_SMI_CHECK, DISABLE_INLINED_SMI_CHECK }; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 512 | void PatchInlinedSmiCode(Isolate* isolate, Address address, |
| 513 | InlinedSmiCheck check); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 514 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 515 | } // namespace internal |
| 516 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 517 | |
| 518 | #endif // V8_IC_H_ |