Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4 | |
| 5 | #ifndef V8_DEOPTIMIZER_H_ |
| 6 | #define V8_DEOPTIMIZER_H_ |
| 7 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #include "src/allocation.h" |
| 9 | #include "src/macro-assembler.h" |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 10 | |
| 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
| 15 | class FrameDescription; |
| 16 | class TranslationIterator; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 17 | class DeoptimizedFrameInfo; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 18 | class TranslatedState; |
| 19 | class RegisterValues; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 20 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 21 | class TranslatedValue { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 22 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 23 | // Allocation-less getter of the value. |
| 24 | // Returns heap()->arguments_marker() if allocation would be |
| 25 | // necessary to get the value. |
| 26 | Object* GetRawValue() const; |
| 27 | Handle<Object> GetValue(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 29 | bool IsMaterializedObject() const; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | |
| 31 | private: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 32 | friend class TranslatedState; |
| 33 | friend class TranslatedFrame; |
| 34 | |
| 35 | enum Kind { |
| 36 | kInvalid, |
| 37 | kTagged, |
| 38 | kInt32, |
| 39 | kUInt32, |
| 40 | kBoolBit, |
| 41 | kDouble, |
| 42 | kCapturedObject, // Object captured by the escape analysis. |
| 43 | // The number of nested objects can be obtained |
| 44 | // with the DeferredObjectLength() method |
| 45 | // (the values of the nested objects follow |
| 46 | // this value in the depth-first order.) |
| 47 | kDuplicatedObject, // Duplicated object of a deferred object. |
| 48 | kArgumentsObject // Arguments object - only used to keep indexing |
| 49 | // in sync, it should not be materialized. |
| 50 | }; |
| 51 | |
| 52 | TranslatedValue(TranslatedState* container, Kind kind) |
| 53 | : kind_(kind), container_(container) {} |
| 54 | Kind kind() const { return kind_; } |
| 55 | void Handlify(); |
| 56 | int GetChildrenCount() const; |
| 57 | |
| 58 | static TranslatedValue NewArgumentsObject(TranslatedState* container, |
| 59 | int length, int object_index); |
| 60 | static TranslatedValue NewDeferredObject(TranslatedState* container, |
| 61 | int length, int object_index); |
| 62 | static TranslatedValue NewDuplicateObject(TranslatedState* container, int id); |
| 63 | static TranslatedValue NewDouble(TranslatedState* container, double value); |
| 64 | static TranslatedValue NewInt32(TranslatedState* container, int32_t value); |
| 65 | static TranslatedValue NewUInt32(TranslatedState* container, uint32_t value); |
| 66 | static TranslatedValue NewBool(TranslatedState* container, uint32_t value); |
| 67 | static TranslatedValue NewTagged(TranslatedState* container, Object* literal); |
| 68 | static TranslatedValue NewInvalid(TranslatedState* container); |
| 69 | |
| 70 | Isolate* isolate() const; |
| 71 | void MaterializeSimple(); |
| 72 | |
| 73 | Kind kind_; |
| 74 | TranslatedState* container_; // This is only needed for materialization of |
| 75 | // objects and constructing handles (to get |
| 76 | // to the isolate). |
| 77 | |
| 78 | MaybeHandle<Object> value_; // Before handlification, this is always null, |
| 79 | // after materialization it is never null, |
| 80 | // in between it is only null if the value needs |
| 81 | // to be materialized. |
| 82 | |
| 83 | struct MaterializedObjectInfo { |
| 84 | int id_; |
| 85 | int length_; // Applies only to kArgumentsObject or kCapturedObject kinds. |
| 86 | }; |
| 87 | |
| 88 | union { |
| 89 | // kind kTagged. After handlification it is always nullptr. |
| 90 | Object* raw_literal_; |
| 91 | // kind is kUInt32 or kBoolBit. |
| 92 | uint32_t uint32_value_; |
| 93 | // kind is kInt32. |
| 94 | int32_t int32_value_; |
| 95 | // kind is kDouble |
| 96 | double double_value_; |
| 97 | // kind is kDuplicatedObject or kArgumentsObject or kCapturedObject. |
| 98 | MaterializedObjectInfo materialization_info_; |
| 99 | }; |
| 100 | |
| 101 | // Checked accessors for the union members. |
| 102 | Object* raw_literal() const; |
| 103 | int32_t int32_value() const; |
| 104 | uint32_t uint32_value() const; |
| 105 | double double_value() const; |
| 106 | int object_length() const; |
| 107 | int object_index() const; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 108 | }; |
| 109 | |
| 110 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 111 | class TranslatedFrame { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 112 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 113 | enum Kind { |
| 114 | kFunction, |
| 115 | kInterpretedFunction, |
| 116 | kGetter, |
| 117 | kSetter, |
| 118 | kArgumentsAdaptor, |
| 119 | kConstructStub, |
| 120 | kCompiledStub, |
| 121 | kInvalid |
| 122 | }; |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 123 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 124 | int GetValueCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 125 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 126 | Kind kind() const { return kind_; } |
| 127 | BailoutId node_id() const { return node_id_; } |
| 128 | Handle<SharedFunctionInfo> shared_info() const { return shared_info_; } |
| 129 | int height() const { return height_; } |
| 130 | |
| 131 | class iterator { |
| 132 | public: |
| 133 | iterator& operator++() { |
| 134 | AdvanceIterator(&position_); |
| 135 | return *this; |
| 136 | } |
| 137 | |
| 138 | iterator operator++(int) { |
| 139 | iterator original(position_); |
| 140 | AdvanceIterator(&position_); |
| 141 | return original; |
| 142 | } |
| 143 | |
| 144 | bool operator==(const iterator& other) const { |
| 145 | return position_ == other.position_; |
| 146 | } |
| 147 | bool operator!=(const iterator& other) const { return !(*this == other); } |
| 148 | |
| 149 | TranslatedValue& operator*() { return (*position_); } |
| 150 | TranslatedValue* operator->() { return &(*position_); } |
| 151 | |
| 152 | private: |
| 153 | friend TranslatedFrame; |
| 154 | |
| 155 | explicit iterator(std::deque<TranslatedValue>::iterator position) |
| 156 | : position_(position) {} |
| 157 | |
| 158 | std::deque<TranslatedValue>::iterator position_; |
| 159 | }; |
| 160 | |
| 161 | typedef TranslatedValue& reference; |
| 162 | typedef TranslatedValue const& const_reference; |
| 163 | |
| 164 | iterator begin() { return iterator(values_.begin()); } |
| 165 | iterator end() { return iterator(values_.end()); } |
| 166 | |
| 167 | reference front() { return values_.front(); } |
| 168 | const_reference front() const { return values_.front(); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 169 | |
| 170 | private: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 171 | friend class TranslatedState; |
| 172 | |
| 173 | // Constructor static methods. |
| 174 | static TranslatedFrame JSFrame(BailoutId node_id, |
| 175 | SharedFunctionInfo* shared_info, int height); |
| 176 | static TranslatedFrame InterpretedFrame(BailoutId bytecode_offset, |
| 177 | SharedFunctionInfo* shared_info, |
| 178 | int height); |
| 179 | static TranslatedFrame AccessorFrame(Kind kind, |
| 180 | SharedFunctionInfo* shared_info); |
| 181 | static TranslatedFrame ArgumentsAdaptorFrame(SharedFunctionInfo* shared_info, |
| 182 | int height); |
| 183 | static TranslatedFrame ConstructStubFrame(SharedFunctionInfo* shared_info, |
| 184 | int height); |
| 185 | static TranslatedFrame CompiledStubFrame(int height, Isolate* isolate) { |
| 186 | return TranslatedFrame(kCompiledStub, isolate, nullptr, height); |
| 187 | } |
| 188 | static TranslatedFrame InvalidFrame() { |
| 189 | return TranslatedFrame(kInvalid, nullptr); |
| 190 | } |
| 191 | |
| 192 | static void AdvanceIterator(std::deque<TranslatedValue>::iterator* iter); |
| 193 | |
| 194 | TranslatedFrame(Kind kind, Isolate* isolate, |
| 195 | SharedFunctionInfo* shared_info = nullptr, int height = 0) |
| 196 | : kind_(kind), |
| 197 | node_id_(BailoutId::None()), |
| 198 | raw_shared_info_(shared_info), |
| 199 | height_(height), |
| 200 | isolate_(isolate) {} |
| 201 | |
| 202 | |
| 203 | void Add(const TranslatedValue& value) { values_.push_back(value); } |
| 204 | void Handlify(); |
| 205 | |
| 206 | Kind kind_; |
| 207 | BailoutId node_id_; |
| 208 | SharedFunctionInfo* raw_shared_info_; |
| 209 | Handle<SharedFunctionInfo> shared_info_; |
| 210 | int height_; |
| 211 | Isolate* isolate_; |
| 212 | |
| 213 | typedef std::deque<TranslatedValue> ValuesContainer; |
| 214 | |
| 215 | ValuesContainer values_; |
| 216 | }; |
| 217 | |
| 218 | |
| 219 | // Auxiliary class for translating deoptimization values. |
| 220 | // Typical usage sequence: |
| 221 | // |
| 222 | // 1. Construct the instance. This will involve reading out the translations |
| 223 | // and resolving them to values using the supplied frame pointer and |
| 224 | // machine state (registers). This phase is guaranteed not to allocate |
| 225 | // and not to use any HandleScope. Any object pointers will be stored raw. |
| 226 | // |
| 227 | // 2. Handlify pointers. This will convert all the raw pointers to handles. |
| 228 | // |
| 229 | // 3. Reading out the frame values. |
| 230 | // |
| 231 | // Note: After the instance is constructed, it is possible to iterate over |
| 232 | // the values eagerly. |
| 233 | |
| 234 | class TranslatedState { |
| 235 | public: |
| 236 | TranslatedState(); |
| 237 | explicit TranslatedState(JavaScriptFrame* frame); |
| 238 | |
| 239 | void Prepare(bool has_adapted_arguments, Address stack_frame_pointer); |
| 240 | |
| 241 | // Store newly materialized values into the isolate. |
| 242 | void StoreMaterializedValuesAndDeopt(); |
| 243 | |
| 244 | typedef std::vector<TranslatedFrame>::iterator iterator; |
| 245 | iterator begin() { return frames_.begin(); } |
| 246 | iterator end() { return frames_.end(); } |
| 247 | |
| 248 | typedef std::vector<TranslatedFrame>::const_iterator const_iterator; |
| 249 | const_iterator begin() const { return frames_.begin(); } |
| 250 | const_iterator end() const { return frames_.end(); } |
| 251 | |
| 252 | std::vector<TranslatedFrame>& frames() { return frames_; } |
| 253 | |
| 254 | TranslatedFrame* GetArgumentsInfoFromJSFrameIndex(int jsframe_index, |
| 255 | int* arguments_count); |
| 256 | |
| 257 | Isolate* isolate() { return isolate_; } |
| 258 | |
| 259 | void Init(Address input_frame_pointer, TranslationIterator* iterator, |
| 260 | FixedArray* literal_array, RegisterValues* registers, |
| 261 | FILE* trace_file); |
| 262 | |
| 263 | private: |
| 264 | friend TranslatedValue; |
| 265 | |
| 266 | TranslatedFrame CreateNextTranslatedFrame(TranslationIterator* iterator, |
| 267 | FixedArray* literal_array, |
| 268 | Address fp, |
| 269 | FILE* trace_file); |
| 270 | TranslatedValue CreateNextTranslatedValue(int frame_index, int value_index, |
| 271 | TranslationIterator* iterator, |
| 272 | FixedArray* literal_array, |
| 273 | Address fp, |
| 274 | RegisterValues* registers, |
| 275 | FILE* trace_file); |
| 276 | |
| 277 | void UpdateFromPreviouslyMaterializedObjects(); |
| 278 | Handle<Object> MaterializeAt(int frame_index, int* value_index); |
| 279 | Handle<Object> MaterializeObjectAt(int object_index); |
| 280 | bool GetAdaptedArguments(Handle<JSObject>* result, int frame_index); |
| 281 | |
| 282 | static uint32_t GetUInt32Slot(Address fp, int slot_index); |
| 283 | |
| 284 | std::vector<TranslatedFrame> frames_; |
| 285 | Isolate* isolate_; |
| 286 | Address stack_frame_pointer_; |
| 287 | bool has_adapted_arguments_; |
| 288 | |
| 289 | struct ObjectPosition { |
| 290 | int frame_index_; |
| 291 | int value_index_; |
| 292 | }; |
| 293 | std::deque<ObjectPosition> object_positions_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 294 | }; |
| 295 | |
| 296 | |
| 297 | class OptimizedFunctionVisitor BASE_EMBEDDED { |
| 298 | public: |
| 299 | virtual ~OptimizedFunctionVisitor() {} |
| 300 | |
| 301 | // Function which is called before iteration of any optimized functions |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | // from given native context. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 303 | virtual void EnterContext(Context* context) = 0; |
| 304 | |
| 305 | virtual void VisitFunction(JSFunction* function) = 0; |
| 306 | |
| 307 | // Function which is called after iteration of all optimized functions |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 308 | // from given native context. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 309 | virtual void LeaveContext(Context* context) = 0; |
| 310 | }; |
| 311 | |
| 312 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 313 | #define DEOPT_MESSAGES_LIST(V) \ |
| 314 | V(kAccessCheck, "Access check needed") \ |
| 315 | V(kNoReason, "no reason") \ |
| 316 | V(kConstantGlobalVariableAssignment, "Constant global variable assignment") \ |
| 317 | V(kConversionOverflow, "conversion overflow") \ |
| 318 | V(kDivisionByZero, "division by zero") \ |
| 319 | V(kElementsKindUnhandledInKeyedLoadGenericStub, \ |
| 320 | "ElementsKind unhandled in KeyedLoadGenericStub") \ |
| 321 | V(kExpectedHeapNumber, "Expected heap number") \ |
| 322 | V(kExpectedSmi, "Expected smi") \ |
| 323 | V(kForcedDeoptToRuntime, "Forced deopt to runtime") \ |
| 324 | V(kHole, "hole") \ |
| 325 | V(kHoleyArrayDespitePackedElements_kindFeedback, \ |
| 326 | "Holey array despite packed elements_kind feedback") \ |
| 327 | V(kInstanceMigrationFailed, "instance migration failed") \ |
| 328 | V(kInsufficientTypeFeedbackForCallWithArguments, \ |
| 329 | "Insufficient type feedback for call with arguments") \ |
| 330 | V(kInsufficientTypeFeedbackForCombinedTypeOfBinaryOperation, \ |
| 331 | "Insufficient type feedback for combined type of binary operation") \ |
| 332 | V(kInsufficientTypeFeedbackForGenericNamedAccess, \ |
| 333 | "Insufficient type feedback for generic named access") \ |
| 334 | V(kInsufficientTypeFeedbackForKeyedLoad, \ |
| 335 | "Insufficient type feedback for keyed load") \ |
| 336 | V(kInsufficientTypeFeedbackForKeyedStore, \ |
| 337 | "Insufficient type feedback for keyed store") \ |
| 338 | V(kInsufficientTypeFeedbackForLHSOfBinaryOperation, \ |
| 339 | "Insufficient type feedback for LHS of binary operation") \ |
| 340 | V(kInsufficientTypeFeedbackForRHSOfBinaryOperation, \ |
| 341 | "Insufficient type feedback for RHS of binary operation") \ |
| 342 | V(kKeyIsNegative, "key is negative") \ |
| 343 | V(kLiteralsWereDisposed, "literals have been disposed") \ |
| 344 | V(kLostPrecision, "lost precision") \ |
| 345 | V(kLostPrecisionOrNaN, "lost precision or NaN") \ |
| 346 | V(kMementoFound, "memento found") \ |
| 347 | V(kMinusZero, "minus zero") \ |
| 348 | V(kNaN, "NaN") \ |
| 349 | V(kNegativeKeyEncountered, "Negative key encountered") \ |
| 350 | V(kNegativeValue, "negative value") \ |
| 351 | V(kNoCache, "no cache") \ |
| 352 | V(kNonStrictElementsInKeyedLoadGenericStub, \ |
| 353 | "non-strict elements in KeyedLoadGenericStub") \ |
| 354 | V(kNotADateObject, "not a date object") \ |
| 355 | V(kNotAHeapNumber, "not a heap number") \ |
| 356 | V(kNotAHeapNumberUndefinedBoolean, "not a heap number/undefined/true/false") \ |
| 357 | V(kNotAHeapNumberUndefined, "not a heap number/undefined") \ |
| 358 | V(kNotAJavaScriptObject, "not a JavaScript object") \ |
| 359 | V(kNotASmi, "not a Smi") \ |
| 360 | V(kNull, "null") \ |
| 361 | V(kOutOfBounds, "out of bounds") \ |
| 362 | V(kOutsideOfRange, "Outside of range") \ |
| 363 | V(kOverflow, "overflow") \ |
| 364 | V(kProxy, "proxy") \ |
| 365 | V(kReceiverWasAGlobalObject, "receiver was a global object") \ |
| 366 | V(kSmi, "Smi") \ |
| 367 | V(kTooManyArguments, "too many arguments") \ |
| 368 | V(kTooManyUndetectableTypes, "Too many undetectable types") \ |
| 369 | V(kTracingElementsTransitions, "Tracing elements transitions") \ |
| 370 | V(kTypeMismatchBetweenFeedbackAndConstant, \ |
| 371 | "Type mismatch between feedback and constant") \ |
| 372 | V(kUndefined, "undefined") \ |
| 373 | V(kUnexpectedCellContentsInConstantGlobalStore, \ |
| 374 | "Unexpected cell contents in constant global store") \ |
| 375 | V(kUnexpectedCellContentsInGlobalStore, \ |
| 376 | "Unexpected cell contents in global store") \ |
| 377 | V(kUnexpectedObject, "unexpected object") \ |
| 378 | V(kUnexpectedRHSOfBinaryOperation, "Unexpected RHS of binary operation") \ |
| 379 | V(kUninitializedBoilerplateInFastClone, \ |
| 380 | "Uninitialized boilerplate in fast clone") \ |
| 381 | V(kUninitializedBoilerplateLiterals, "Uninitialized boilerplate literals") \ |
| 382 | V(kUnknownMapInPolymorphicAccess, "Unknown map in polymorphic access") \ |
| 383 | V(kUnknownMapInPolymorphicCall, "Unknown map in polymorphic call") \ |
| 384 | V(kUnknownMapInPolymorphicElementAccess, \ |
| 385 | "Unknown map in polymorphic element access") \ |
| 386 | V(kUnknownMap, "Unknown map") \ |
| 387 | V(kValueMismatch, "value mismatch") \ |
| 388 | V(kWrongInstanceType, "wrong instance type") \ |
| 389 | V(kWrongMap, "wrong map") \ |
| 390 | V(kUndefinedOrNullInForIn, "null or undefined in for-in") \ |
| 391 | V(kUndefinedOrNullInToObject, "null or undefined in ToObject") |
| 392 | |
| 393 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 394 | class Deoptimizer : public Malloced { |
| 395 | public: |
| 396 | enum BailoutType { |
| 397 | EAGER, |
| 398 | LAZY, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 399 | SOFT, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 400 | // This last bailout type is not really a bailout, but used by the |
| 401 | // debugger to deoptimize stack frames to allow inspection. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 402 | DEBUGGER, |
| 403 | kBailoutTypesWithCodeEntry = SOFT + 1 |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 404 | }; |
| 405 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 406 | #define DEOPT_MESSAGES_CONSTANTS(C, T) C, |
| 407 | enum DeoptReason { |
| 408 | DEOPT_MESSAGES_LIST(DEOPT_MESSAGES_CONSTANTS) kLastDeoptReason |
| 409 | }; |
| 410 | #undef DEOPT_MESSAGES_CONSTANTS |
| 411 | static const char* GetDeoptReason(DeoptReason deopt_reason); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 412 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 413 | struct DeoptInfo { |
| 414 | DeoptInfo(SourcePosition position, const char* m, DeoptReason d) |
| 415 | : position(position), mnemonic(m), deopt_reason(d), inlining_id(0) {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 416 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 417 | SourcePosition position; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 418 | const char* mnemonic; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 419 | DeoptReason deopt_reason; |
| 420 | int inlining_id; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 421 | }; |
| 422 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 423 | static DeoptInfo GetDeoptInfo(Code* code, byte* from); |
| 424 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 425 | struct JumpTableEntry : public ZoneObject { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 426 | inline JumpTableEntry(Address entry, const DeoptInfo& deopt_info, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 427 | Deoptimizer::BailoutType type, bool frame) |
| 428 | : label(), |
| 429 | address(entry), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 430 | deopt_info(deopt_info), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 431 | bailout_type(type), |
| 432 | needs_frame(frame) {} |
| 433 | |
| 434 | bool IsEquivalentTo(const JumpTableEntry& other) const { |
| 435 | return address == other.address && bailout_type == other.bailout_type && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 436 | needs_frame == other.needs_frame; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 437 | } |
| 438 | |
| 439 | Label label; |
| 440 | Address address; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 441 | DeoptInfo deopt_info; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 442 | Deoptimizer::BailoutType bailout_type; |
| 443 | bool needs_frame; |
| 444 | }; |
| 445 | |
| 446 | static bool TraceEnabledFor(BailoutType deopt_type, |
| 447 | StackFrame::Type frame_type); |
| 448 | static const char* MessageFor(BailoutType type); |
| 449 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 450 | int output_count() const { return output_count_; } |
| 451 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 452 | Handle<JSFunction> function() const { return Handle<JSFunction>(function_); } |
| 453 | Handle<Code> compiled_code() const { return Handle<Code>(compiled_code_); } |
| 454 | BailoutType bailout_type() const { return bailout_type_; } |
| 455 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 456 | // Number of created JS frames. Not all created frames are necessarily JS. |
| 457 | int jsframe_count() const { return jsframe_count_; } |
| 458 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 459 | static Deoptimizer* New(JSFunction* function, |
| 460 | BailoutType type, |
| 461 | unsigned bailout_id, |
| 462 | Address from, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 463 | int fp_to_sp_delta, |
| 464 | Isolate* isolate); |
| 465 | static Deoptimizer* Grab(Isolate* isolate); |
| 466 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 467 | // The returned object with information on the optimized frame needs to be |
| 468 | // freed before another one can be generated. |
| 469 | static DeoptimizedFrameInfo* DebuggerInspectableFrame(JavaScriptFrame* frame, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 470 | int jsframe_index, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 471 | Isolate* isolate); |
| 472 | static void DeleteDebuggerInspectableFrame(DeoptimizedFrameInfo* info, |
| 473 | Isolate* isolate); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 474 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 475 | // Makes sure that there is enough room in the relocation |
| 476 | // information of a code object to perform lazy deoptimization |
| 477 | // patching. If there is not enough room a new relocation |
| 478 | // information object is allocated and comments are added until it |
| 479 | // is big enough. |
| 480 | static void EnsureRelocSpaceForLazyDeoptimization(Handle<Code> code); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 481 | |
| 482 | // Deoptimize the function now. Its current optimized code will never be run |
| 483 | // again and any activations of the optimized code will get deoptimized when |
| 484 | // execution returns. |
| 485 | static void DeoptimizeFunction(JSFunction* function); |
| 486 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 487 | // Deoptimize all code in the given isolate. |
| 488 | static void DeoptimizeAll(Isolate* isolate); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 489 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 490 | // Deoptimizes all optimized code that has been previously marked |
| 491 | // (via code->set_marked_for_deoptimization) and unlinks all functions that |
| 492 | // refer to that code. |
| 493 | static void DeoptimizeMarkedCode(Isolate* isolate); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 494 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 495 | // Visit all the known optimized functions in a given isolate. |
| 496 | static void VisitAllOptimizedFunctions( |
| 497 | Isolate* isolate, OptimizedFunctionVisitor* visitor); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 498 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 499 | // The size in bytes of the code required at a lazy deopt patch site. |
| 500 | static int patch_size(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 501 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 502 | ~Deoptimizer(); |
| 503 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 504 | void MaterializeHeapObjects(JavaScriptFrameIterator* it); |
| 505 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 506 | void MaterializeHeapNumbersForDebuggerInspectableFrame( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 507 | int frame_index, int parameter_count, int expression_count, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 508 | DeoptimizedFrameInfo* info); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 509 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 510 | static void ComputeOutputFrames(Deoptimizer* deoptimizer); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 511 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 512 | |
| 513 | enum GetEntryMode { |
| 514 | CALCULATE_ENTRY_ADDRESS, |
| 515 | ENSURE_ENTRY_CODE |
| 516 | }; |
| 517 | |
| 518 | |
| 519 | static Address GetDeoptimizationEntry( |
| 520 | Isolate* isolate, |
| 521 | int id, |
| 522 | BailoutType type, |
| 523 | GetEntryMode mode = ENSURE_ENTRY_CODE); |
| 524 | static int GetDeoptimizationId(Isolate* isolate, |
| 525 | Address addr, |
| 526 | BailoutType type); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 527 | static int GetOutputInfo(DeoptimizationOutputData* data, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 528 | BailoutId node_id, |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 529 | SharedFunctionInfo* shared); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 530 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 531 | // Code generation support. |
| 532 | static int input_offset() { return OFFSET_OF(Deoptimizer, input_); } |
| 533 | static int output_count_offset() { |
| 534 | return OFFSET_OF(Deoptimizer, output_count_); |
| 535 | } |
| 536 | static int output_offset() { return OFFSET_OF(Deoptimizer, output_); } |
| 537 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 538 | static int has_alignment_padding_offset() { |
| 539 | return OFFSET_OF(Deoptimizer, has_alignment_padding_); |
| 540 | } |
| 541 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 542 | static int GetDeoptimizedCodeCount(Isolate* isolate); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 543 | |
| 544 | static const int kNotDeoptimizationEntry = -1; |
| 545 | |
| 546 | // Generators for the deoptimization entry code. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 547 | class TableEntryGenerator BASE_EMBEDDED { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 548 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 549 | TableEntryGenerator(MacroAssembler* masm, BailoutType type, int count) |
| 550 | : masm_(masm), type_(type), count_(count) {} |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 551 | |
| 552 | void Generate(); |
| 553 | |
| 554 | protected: |
| 555 | MacroAssembler* masm() const { return masm_; } |
| 556 | BailoutType type() const { return type_; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 557 | Isolate* isolate() const { return masm_->isolate(); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 558 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 559 | void GeneratePrologue(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 560 | |
| 561 | private: |
| 562 | int count() const { return count_; } |
| 563 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 564 | MacroAssembler* masm_; |
| 565 | Deoptimizer::BailoutType type_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 566 | int count_; |
| 567 | }; |
| 568 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 569 | int ConvertJSFrameIndexToFrameIndex(int jsframe_index); |
| 570 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 571 | static size_t GetMaxDeoptTableSize(); |
| 572 | |
| 573 | static void EnsureCodeForDeoptimizationEntry(Isolate* isolate, |
| 574 | BailoutType type, |
| 575 | int max_entry_id); |
| 576 | |
| 577 | Isolate* isolate() const { return isolate_; } |
| 578 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 579 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 580 | static const int kMinNumberOfEntries = 64; |
| 581 | static const int kMaxNumberOfEntries = 16384; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 582 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 583 | Deoptimizer(Isolate* isolate, |
| 584 | JSFunction* function, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 585 | BailoutType type, |
| 586 | unsigned bailout_id, |
| 587 | Address from, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 588 | int fp_to_sp_delta, |
| 589 | Code* optimized_code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 590 | Code* FindOptimizedCode(JSFunction* function, Code* optimized_code); |
| 591 | void PrintFunctionName(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 592 | void DeleteFrameDescriptions(); |
| 593 | |
| 594 | void DoComputeOutputFrames(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 595 | void DoComputeJSFrame(int frame_index); |
| 596 | void DoComputeInterpretedFrame(int frame_index); |
| 597 | void DoComputeArgumentsAdaptorFrame(int frame_index); |
| 598 | void DoComputeConstructStubFrame(int frame_index); |
| 599 | void DoComputeAccessorStubFrame(int frame_index, bool is_setter_stub_frame); |
| 600 | void DoComputeCompiledStubFrame(int frame_index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 601 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 602 | void WriteTranslatedValueToOutput( |
| 603 | TranslatedFrame::iterator* iterator, int* input_index, int frame_index, |
| 604 | unsigned output_offset, const char* debug_hint_string = nullptr, |
| 605 | Address output_address_for_materialization = nullptr); |
| 606 | void WriteValueToOutput(Object* value, int input_index, int frame_index, |
| 607 | unsigned output_offset, |
| 608 | const char* debug_hint_string); |
| 609 | void DebugPrintOutputSlot(intptr_t value, int frame_index, |
| 610 | unsigned output_offset, |
| 611 | const char* debug_hint_string); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 612 | |
| 613 | unsigned ComputeInputFrameSize() const; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 614 | unsigned ComputeJavascriptFixedSize(JSFunction* function) const; |
| 615 | unsigned ComputeInterpretedFixedSize(JSFunction* function) const; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 616 | |
| 617 | unsigned ComputeIncomingArgumentSize(JSFunction* function) const; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 618 | static unsigned ComputeOutgoingArgumentSize(Code* code, unsigned bailout_id); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 619 | |
| 620 | Object* ComputeLiteral(int index) const; |
| 621 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 622 | static void GenerateDeoptimizationEntries( |
| 623 | MacroAssembler* masm, int count, BailoutType type); |
| 624 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 625 | // Marks all the code in the given context for deoptimization. |
| 626 | static void MarkAllCodeForContext(Context* native_context); |
| 627 | |
| 628 | // Visit all the known optimized functions in a given context. |
| 629 | static void VisitAllOptimizedFunctionsForContext( |
| 630 | Context* context, OptimizedFunctionVisitor* visitor); |
| 631 | |
| 632 | // Deoptimizes all code marked in the given context. |
| 633 | static void DeoptimizeMarkedCodeForContext(Context* native_context); |
| 634 | |
| 635 | // Patch the given code so that it will deoptimize itself. |
| 636 | static void PatchCodeForDeoptimization(Isolate* isolate, Code* code); |
| 637 | |
| 638 | // Searches the list of known deoptimizing code for a Code object |
| 639 | // containing the given address (which is supposedly faster than |
| 640 | // searching all code objects). |
| 641 | Code* FindDeoptimizingCode(Address addr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 642 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 643 | // Fill the input from from a JavaScript frame. This is used when |
| 644 | // the debugger needs to inspect an optimized frame. For normal |
| 645 | // deoptimizations the input frame is filled in generated code. |
| 646 | void FillInputFrame(Address tos, JavaScriptFrame* frame); |
| 647 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 648 | // Fill the given output frame's registers to contain the failure handler |
| 649 | // address and the number of parameters for a stub failure trampoline. |
| 650 | void SetPlatformCompiledStubRegisters(FrameDescription* output_frame, |
| 651 | CodeStubDescriptor* desc); |
| 652 | |
| 653 | // Fill the given output frame's double registers with the original values |
| 654 | // from the input frame's double registers. |
| 655 | void CopyDoubleRegisters(FrameDescription* output_frame); |
| 656 | |
| 657 | // Determines whether the input frame contains alignment padding by looking |
| 658 | // at the dynamic alignment state slot inside the frame. |
| 659 | bool HasAlignmentPadding(JSFunction* function); |
| 660 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 661 | Isolate* isolate_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 662 | JSFunction* function_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 663 | Code* compiled_code_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 664 | unsigned bailout_id_; |
| 665 | BailoutType bailout_type_; |
| 666 | Address from_; |
| 667 | int fp_to_sp_delta_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 668 | int has_alignment_padding_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 669 | |
| 670 | // Input frame description. |
| 671 | FrameDescription* input_; |
| 672 | // Number of output frames. |
| 673 | int output_count_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 674 | // Number of output js frames. |
| 675 | int jsframe_count_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 676 | // Array of output frame descriptions. |
| 677 | FrameDescription** output_; |
| 678 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 679 | // Key for lookup of previously materialized objects |
| 680 | Address stack_fp_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 681 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 682 | TranslatedState translated_state_; |
| 683 | struct ValueToMaterialize { |
| 684 | Address output_slot_address_; |
| 685 | TranslatedFrame::iterator value_; |
| 686 | }; |
| 687 | std::vector<ValueToMaterialize> values_to_materialize_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 688 | |
| 689 | #ifdef DEBUG |
| 690 | DisallowHeapAllocation* disallow_heap_allocation_; |
| 691 | #endif // DEBUG |
| 692 | |
| 693 | CodeTracer::Scope* trace_scope_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 694 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 695 | static const int table_entry_size_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 696 | |
| 697 | friend class FrameDescription; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 698 | friend class DeoptimizedFrameInfo; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 699 | }; |
| 700 | |
| 701 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 702 | class RegisterValues { |
| 703 | public: |
| 704 | intptr_t GetRegister(unsigned n) const { |
| 705 | #if DEBUG |
| 706 | // This convoluted DCHECK is needed to work around a gcc problem that |
| 707 | // improperly detects an array bounds overflow in optimized debug builds |
| 708 | // when using a plain DCHECK. |
| 709 | if (n >= arraysize(registers_)) { |
| 710 | DCHECK(false); |
| 711 | return 0; |
| 712 | } |
| 713 | #endif |
| 714 | return registers_[n]; |
| 715 | } |
| 716 | |
| 717 | double GetDoubleRegister(unsigned n) const { |
| 718 | DCHECK(n < arraysize(double_registers_)); |
| 719 | return double_registers_[n]; |
| 720 | } |
| 721 | |
| 722 | void SetRegister(unsigned n, intptr_t value) { |
| 723 | DCHECK(n < arraysize(registers_)); |
| 724 | registers_[n] = value; |
| 725 | } |
| 726 | |
| 727 | void SetDoubleRegister(unsigned n, double value) { |
| 728 | DCHECK(n < arraysize(double_registers_)); |
| 729 | double_registers_[n] = value; |
| 730 | } |
| 731 | |
| 732 | intptr_t registers_[Register::kNumRegisters]; |
| 733 | double double_registers_[DoubleRegister::kMaxNumRegisters]; |
| 734 | }; |
| 735 | |
| 736 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 737 | class FrameDescription { |
| 738 | public: |
| 739 | FrameDescription(uint32_t frame_size, |
| 740 | JSFunction* function); |
| 741 | |
| 742 | void* operator new(size_t size, uint32_t frame_size) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 743 | // Subtracts kPointerSize, as the member frame_content_ already supplies |
| 744 | // the first element of the area to store the frame. |
| 745 | return malloc(size + frame_size - kPointerSize); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 746 | } |
| 747 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 748 | void operator delete(void* pointer, uint32_t frame_size) { |
| 749 | free(pointer); |
| 750 | } |
| 751 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 752 | void operator delete(void* description) { |
| 753 | free(description); |
| 754 | } |
| 755 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 756 | uint32_t GetFrameSize() const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 757 | DCHECK(static_cast<uint32_t>(frame_size_) == frame_size_); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 758 | return static_cast<uint32_t>(frame_size_); |
| 759 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 760 | |
| 761 | JSFunction* GetFunction() const { return function_; } |
| 762 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 763 | unsigned GetOffsetFromSlotIndex(int slot_index); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 764 | |
| 765 | intptr_t GetFrameSlot(unsigned offset) { |
| 766 | return *GetFrameSlotPointer(offset); |
| 767 | } |
| 768 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 769 | Address GetFramePointerAddress() { |
| 770 | int fp_offset = GetFrameSize() - |
| 771 | (ComputeParametersCount() + 1) * kPointerSize - |
| 772 | StandardFrameConstants::kCallerSPOffset; |
| 773 | return reinterpret_cast<Address>(GetFrameSlotPointer(fp_offset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 774 | } |
| 775 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 776 | RegisterValues* GetRegisterValues() { return ®ister_values_; } |
| 777 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 778 | void SetFrameSlot(unsigned offset, intptr_t value) { |
| 779 | *GetFrameSlotPointer(offset) = value; |
| 780 | } |
| 781 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 782 | void SetCallerPc(unsigned offset, intptr_t value); |
| 783 | |
| 784 | void SetCallerFp(unsigned offset, intptr_t value); |
| 785 | |
| 786 | void SetCallerConstantPool(unsigned offset, intptr_t value); |
| 787 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 788 | intptr_t GetRegister(unsigned n) const { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 789 | return register_values_.GetRegister(n); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | double GetDoubleRegister(unsigned n) const { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 793 | return register_values_.GetDoubleRegister(n); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | void SetRegister(unsigned n, intptr_t value) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 797 | register_values_.SetRegister(n, value); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | void SetDoubleRegister(unsigned n, double value) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 801 | register_values_.SetDoubleRegister(n, value); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | intptr_t GetTop() const { return top_; } |
| 805 | void SetTop(intptr_t top) { top_ = top; } |
| 806 | |
| 807 | intptr_t GetPc() const { return pc_; } |
| 808 | void SetPc(intptr_t pc) { pc_ = pc; } |
| 809 | |
| 810 | intptr_t GetFp() const { return fp_; } |
| 811 | void SetFp(intptr_t fp) { fp_ = fp; } |
| 812 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 813 | intptr_t GetContext() const { return context_; } |
| 814 | void SetContext(intptr_t context) { context_ = context; } |
| 815 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 816 | intptr_t GetConstantPool() const { return constant_pool_; } |
| 817 | void SetConstantPool(intptr_t constant_pool) { |
| 818 | constant_pool_ = constant_pool; |
| 819 | } |
| 820 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 821 | Smi* GetState() const { return state_; } |
| 822 | void SetState(Smi* state) { state_ = state; } |
| 823 | |
| 824 | void SetContinuation(intptr_t pc) { continuation_ = pc; } |
| 825 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 826 | StackFrame::Type GetFrameType() const { return type_; } |
| 827 | void SetFrameType(StackFrame::Type type) { type_ = type; } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 828 | |
| 829 | // Get the incoming arguments count. |
| 830 | int ComputeParametersCount(); |
| 831 | |
| 832 | // Get a parameter value for an unoptimized frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 833 | Object* GetParameter(int index); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 834 | |
| 835 | // Get the expression stack height for a unoptimized frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 836 | unsigned GetExpressionCount(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 837 | |
| 838 | // Get the expression stack value for an unoptimized frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 839 | Object* GetExpression(int index); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 840 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 841 | static int registers_offset() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 842 | return OFFSET_OF(FrameDescription, register_values_.registers_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | static int double_registers_offset() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 846 | return OFFSET_OF(FrameDescription, register_values_.double_registers_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | static int frame_size_offset() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 850 | return offsetof(FrameDescription, frame_size_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 851 | } |
| 852 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 853 | static int pc_offset() { return offsetof(FrameDescription, pc_); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 854 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 855 | static int state_offset() { return offsetof(FrameDescription, state_); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 856 | |
| 857 | static int continuation_offset() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 858 | return offsetof(FrameDescription, continuation_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 859 | } |
| 860 | |
| 861 | static int frame_content_offset() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 862 | return offsetof(FrameDescription, frame_content_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 863 | } |
| 864 | |
| 865 | private: |
| 866 | static const uint32_t kZapUint32 = 0xbeeddead; |
| 867 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 868 | // Frame_size_ must hold a uint32_t value. It is only a uintptr_t to |
| 869 | // keep the variable-size array frame_content_ of type intptr_t at |
| 870 | // the end of the structure aligned. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 871 | uintptr_t frame_size_; // Number of bytes. |
| 872 | JSFunction* function_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 873 | RegisterValues register_values_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 874 | intptr_t top_; |
| 875 | intptr_t pc_; |
| 876 | intptr_t fp_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 877 | intptr_t context_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 878 | intptr_t constant_pool_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 879 | StackFrame::Type type_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 880 | Smi* state_; |
| 881 | |
| 882 | // Continuation is the PC where the execution continues after |
| 883 | // deoptimizing. |
| 884 | intptr_t continuation_; |
| 885 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 886 | // This must be at the end of the object as the object is allocated larger |
| 887 | // than it's definition indicate to extend this array. |
| 888 | intptr_t frame_content_[1]; |
| 889 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 890 | intptr_t* GetFrameSlotPointer(unsigned offset) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 891 | DCHECK(offset < frame_size_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 892 | return reinterpret_cast<intptr_t*>( |
| 893 | reinterpret_cast<Address>(this) + frame_content_offset() + offset); |
| 894 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 895 | |
| 896 | int ComputeFixedSize(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 897 | }; |
| 898 | |
| 899 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 900 | class DeoptimizerData { |
| 901 | public: |
| 902 | explicit DeoptimizerData(MemoryAllocator* allocator); |
| 903 | ~DeoptimizerData(); |
| 904 | |
| 905 | void Iterate(ObjectVisitor* v); |
| 906 | |
| 907 | private: |
| 908 | MemoryAllocator* allocator_; |
| 909 | int deopt_entry_code_entries_[Deoptimizer::kBailoutTypesWithCodeEntry]; |
| 910 | MemoryChunk* deopt_entry_code_[Deoptimizer::kBailoutTypesWithCodeEntry]; |
| 911 | |
| 912 | DeoptimizedFrameInfo* deoptimized_frame_info_; |
| 913 | |
| 914 | Deoptimizer* current_; |
| 915 | |
| 916 | friend class Deoptimizer; |
| 917 | |
| 918 | DISALLOW_COPY_AND_ASSIGN(DeoptimizerData); |
| 919 | }; |
| 920 | |
| 921 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 922 | class TranslationBuffer BASE_EMBEDDED { |
| 923 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 924 | explicit TranslationBuffer(Zone* zone) : contents_(256, zone) { } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 925 | |
| 926 | int CurrentIndex() const { return contents_.length(); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 927 | void Add(int32_t value, Zone* zone); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 928 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 929 | Handle<ByteArray> CreateByteArray(Factory* factory); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 930 | |
| 931 | private: |
| 932 | ZoneList<uint8_t> contents_; |
| 933 | }; |
| 934 | |
| 935 | |
| 936 | class TranslationIterator BASE_EMBEDDED { |
| 937 | public: |
| 938 | TranslationIterator(ByteArray* buffer, int index) |
| 939 | : buffer_(buffer), index_(index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 940 | DCHECK(index >= 0 && index < buffer->length()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | int32_t Next(); |
| 944 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 945 | bool HasNext() const { return index_ < buffer_->length(); } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 946 | |
| 947 | void Skip(int n) { |
| 948 | for (int i = 0; i < n; i++) Next(); |
| 949 | } |
| 950 | |
| 951 | private: |
| 952 | ByteArray* buffer_; |
| 953 | int index_; |
| 954 | }; |
| 955 | |
| 956 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 957 | #define TRANSLATION_OPCODE_LIST(V) \ |
| 958 | V(BEGIN) \ |
| 959 | V(JS_FRAME) \ |
| 960 | V(INTERPRETED_FRAME) \ |
| 961 | V(CONSTRUCT_STUB_FRAME) \ |
| 962 | V(GETTER_STUB_FRAME) \ |
| 963 | V(SETTER_STUB_FRAME) \ |
| 964 | V(ARGUMENTS_ADAPTOR_FRAME) \ |
| 965 | V(COMPILED_STUB_FRAME) \ |
| 966 | V(DUPLICATED_OBJECT) \ |
| 967 | V(ARGUMENTS_OBJECT) \ |
| 968 | V(CAPTURED_OBJECT) \ |
| 969 | V(REGISTER) \ |
| 970 | V(INT32_REGISTER) \ |
| 971 | V(UINT32_REGISTER) \ |
| 972 | V(BOOL_REGISTER) \ |
| 973 | V(DOUBLE_REGISTER) \ |
| 974 | V(STACK_SLOT) \ |
| 975 | V(INT32_STACK_SLOT) \ |
| 976 | V(UINT32_STACK_SLOT) \ |
| 977 | V(BOOL_STACK_SLOT) \ |
| 978 | V(DOUBLE_STACK_SLOT) \ |
| 979 | V(LITERAL) \ |
| 980 | V(JS_FRAME_FUNCTION) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 981 | |
| 982 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 983 | class Translation BASE_EMBEDDED { |
| 984 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 985 | #define DECLARE_TRANSLATION_OPCODE_ENUM(item) item, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 986 | enum Opcode { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 987 | TRANSLATION_OPCODE_LIST(DECLARE_TRANSLATION_OPCODE_ENUM) |
| 988 | LAST = LITERAL |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 989 | }; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 990 | #undef DECLARE_TRANSLATION_OPCODE_ENUM |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 991 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 992 | Translation(TranslationBuffer* buffer, int frame_count, int jsframe_count, |
| 993 | Zone* zone) |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 994 | : buffer_(buffer), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 995 | index_(buffer->CurrentIndex()), |
| 996 | zone_(zone) { |
| 997 | buffer_->Add(BEGIN, zone); |
| 998 | buffer_->Add(frame_count, zone); |
| 999 | buffer_->Add(jsframe_count, zone); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1000 | } |
| 1001 | |
| 1002 | int index() const { return index_; } |
| 1003 | |
| 1004 | // Commands. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1005 | void BeginJSFrame(BailoutId node_id, int literal_id, unsigned height); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1006 | void BeginInterpretedFrame(BailoutId bytecode_offset, int literal_id, |
| 1007 | unsigned height); |
| 1008 | void BeginCompiledStubFrame(int height); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1009 | void BeginArgumentsAdaptorFrame(int literal_id, unsigned height); |
| 1010 | void BeginConstructStubFrame(int literal_id, unsigned height); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1011 | void BeginGetterStubFrame(int literal_id); |
| 1012 | void BeginSetterStubFrame(int literal_id); |
| 1013 | void BeginArgumentsObject(int args_length); |
| 1014 | void BeginCapturedObject(int length); |
| 1015 | void DuplicateObject(int object_index); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1016 | void StoreRegister(Register reg); |
| 1017 | void StoreInt32Register(Register reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1018 | void StoreUint32Register(Register reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1019 | void StoreBoolRegister(Register reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1020 | void StoreDoubleRegister(DoubleRegister reg); |
| 1021 | void StoreStackSlot(int index); |
| 1022 | void StoreInt32StackSlot(int index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1023 | void StoreUint32StackSlot(int index); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1024 | void StoreBoolStackSlot(int index); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1025 | void StoreDoubleStackSlot(int index); |
| 1026 | void StoreLiteral(int literal_id); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1027 | void StoreArgumentsObject(bool args_known, int args_index, int args_length); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1028 | void StoreJSFrameFunction(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1029 | |
| 1030 | Zone* zone() const { return zone_; } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1031 | |
| 1032 | static int NumberOfOperandsFor(Opcode opcode); |
| 1033 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1034 | #if defined(OBJECT_PRINT) || defined(ENABLE_DISASSEMBLER) |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1035 | static const char* StringFor(Opcode opcode); |
| 1036 | #endif |
| 1037 | |
| 1038 | private: |
| 1039 | TranslationBuffer* buffer_; |
| 1040 | int index_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1041 | Zone* zone_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1042 | }; |
| 1043 | |
| 1044 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1045 | class MaterializedObjectStore { |
| 1046 | public: |
| 1047 | explicit MaterializedObjectStore(Isolate* isolate) : isolate_(isolate) { |
| 1048 | } |
| 1049 | |
| 1050 | Handle<FixedArray> Get(Address fp); |
| 1051 | void Set(Address fp, Handle<FixedArray> materialized_objects); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1052 | bool Remove(Address fp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1053 | |
| 1054 | private: |
| 1055 | Isolate* isolate() { return isolate_; } |
| 1056 | Handle<FixedArray> GetStackEntries(); |
| 1057 | Handle<FixedArray> EnsureStackEntries(int size); |
| 1058 | |
| 1059 | int StackIdToIndex(Address fp); |
| 1060 | |
| 1061 | Isolate* isolate_; |
| 1062 | List<Address> frame_fps_; |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1063 | }; |
| 1064 | |
| 1065 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1066 | // Class used to represent an unoptimized frame when the debugger |
| 1067 | // needs to inspect a frame that is part of an optimized frame. The |
| 1068 | // internally used FrameDescription objects are not GC safe so for use |
| 1069 | // by the debugger frame information is copied to an object of this type. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1070 | // Represents parameters in unadapted form so their number might mismatch |
| 1071 | // formal parameter count. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1072 | class DeoptimizedFrameInfo : public Malloced { |
| 1073 | public: |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1074 | DeoptimizedFrameInfo(Deoptimizer* deoptimizer, |
| 1075 | int frame_index, |
| 1076 | bool has_arguments_adaptor, |
| 1077 | bool has_construct_stub); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1078 | virtual ~DeoptimizedFrameInfo(); |
| 1079 | |
| 1080 | // GC support. |
| 1081 | void Iterate(ObjectVisitor* v); |
| 1082 | |
| 1083 | // Return the number of incoming arguments. |
| 1084 | int parameters_count() { return parameters_count_; } |
| 1085 | |
| 1086 | // Return the height of the expression stack. |
| 1087 | int expression_count() { return expression_count_; } |
| 1088 | |
| 1089 | // Get the frame function. |
| 1090 | JSFunction* GetFunction() { |
| 1091 | return function_; |
| 1092 | } |
| 1093 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1094 | // Get the frame context. |
| 1095 | Object* GetContext() { return context_; } |
| 1096 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1097 | // Check if this frame is preceded by construct stub frame. The bottom-most |
| 1098 | // inlined frame might still be called by an uninlined construct stub. |
| 1099 | bool HasConstructStub() { |
| 1100 | return has_construct_stub_; |
| 1101 | } |
| 1102 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1103 | // Get an incoming argument. |
| 1104 | Object* GetParameter(int index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1105 | DCHECK(0 <= index && index < parameters_count()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1106 | return parameters_[index]; |
| 1107 | } |
| 1108 | |
| 1109 | // Get an expression from the expression stack. |
| 1110 | Object* GetExpression(int index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1111 | DCHECK(0 <= index && index < expression_count()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1112 | return expression_stack_[index]; |
| 1113 | } |
| 1114 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1115 | int GetSourcePosition() { |
| 1116 | return source_position_; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1117 | } |
| 1118 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1119 | private: |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1120 | // Set an incoming argument. |
| 1121 | void SetParameter(int index, Object* obj) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1122 | DCHECK(0 <= index && index < parameters_count()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1123 | parameters_[index] = obj; |
| 1124 | } |
| 1125 | |
| 1126 | // Set an expression on the expression stack. |
| 1127 | void SetExpression(int index, Object* obj) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1128 | DCHECK(0 <= index && index < expression_count()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1129 | expression_stack_[index] = obj; |
| 1130 | } |
| 1131 | |
| 1132 | JSFunction* function_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1133 | Object* context_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1134 | bool has_construct_stub_; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1135 | int parameters_count_; |
| 1136 | int expression_count_; |
| 1137 | Object** parameters_; |
| 1138 | Object** expression_stack_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1139 | int source_position_; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1140 | |
| 1141 | friend class Deoptimizer; |
| 1142 | }; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1143 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1144 | } // namespace internal |
| 1145 | } // namespace v8 |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1146 | |
| 1147 | #endif // V8_DEOPTIMIZER_H_ |