| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2015 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_COMPILER_CODE_STUB_ASSEMBLER_H_ | |
| 6 #define V8_COMPILER_CODE_STUB_ASSEMBLER_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 | |
| 10 // Clients of this interface shouldn't depend on lots of compiler internals. | |
| 11 // Do not include anything from src/compiler here! | |
| 12 #include "src/allocation.h" | |
| 13 #include "src/builtins.h" | |
| 14 #include "src/heap/heap.h" | |
| 15 #include "src/machine-type.h" | |
| 16 #include "src/runtime/runtime.h" | |
| 17 #include "src/zone-containers.h" | |
| 18 | |
| 19 namespace v8 { | |
| 20 namespace internal { | |
| 21 | |
| 22 class Callable; | |
| 23 class CallInterfaceDescriptor; | |
| 24 class Isolate; | |
| 25 class Factory; | |
| 26 class Zone; | |
| 27 | |
| 28 namespace compiler { | |
| 29 | |
| 30 class CallDescriptor; | |
| 31 class Graph; | |
| 32 class Node; | |
| 33 class Operator; | |
| 34 class RawMachineAssembler; | |
| 35 class RawMachineLabel; | |
| 36 class Schedule; | |
| 37 | |
| 38 #define CODE_STUB_ASSEMBLER_COMPARE_BINARY_OP_LIST(V) \ | |
| 39 V(Float32Equal) \ | |
| 40 V(Float32LessThan) \ | |
| 41 V(Float32LessThanOrEqual) \ | |
| 42 V(Float32GreaterThan) \ | |
| 43 V(Float32GreaterThanOrEqual) \ | |
| 44 V(Float64Equal) \ | |
| 45 V(Float64LessThan) \ | |
| 46 V(Float64LessThanOrEqual) \ | |
| 47 V(Float64GreaterThan) \ | |
| 48 V(Float64GreaterThanOrEqual) \ | |
| 49 V(Int32GreaterThan) \ | |
| 50 V(Int32GreaterThanOrEqual) \ | |
| 51 V(Int32LessThan) \ | |
| 52 V(Int32LessThanOrEqual) \ | |
| 53 V(IntPtrLessThan) \ | |
| 54 V(IntPtrLessThanOrEqual) \ | |
| 55 V(Uint32LessThan) \ | |
| 56 V(UintPtrGreaterThanOrEqual) \ | |
| 57 V(WordEqual) \ | |
| 58 V(WordNotEqual) \ | |
| 59 V(Word32Equal) \ | |
| 60 V(Word32NotEqual) \ | |
| 61 V(Word64Equal) \ | |
| 62 V(Word64NotEqual) | |
| 63 | |
| 64 #define CODE_STUB_ASSEMBLER_BINARY_OP_LIST(V) \ | |
| 65 CODE_STUB_ASSEMBLER_COMPARE_BINARY_OP_LIST(V) \ | |
| 66 V(Float64Add) \ | |
| 67 V(Float64Sub) \ | |
| 68 V(Float64Mul) \ | |
| 69 V(Float64Div) \ | |
| 70 V(Float64Mod) \ | |
| 71 V(Float64InsertLowWord32) \ | |
| 72 V(Float64InsertHighWord32) \ | |
| 73 V(IntPtrAdd) \ | |
| 74 V(IntPtrAddWithOverflow) \ | |
| 75 V(IntPtrSub) \ | |
| 76 V(IntPtrSubWithOverflow) \ | |
| 77 V(IntPtrMul) \ | |
| 78 V(Int32Add) \ | |
| 79 V(Int32AddWithOverflow) \ | |
| 80 V(Int32Sub) \ | |
| 81 V(Int32Mul) \ | |
| 82 V(Int32Div) \ | |
| 83 V(WordOr) \ | |
| 84 V(WordAnd) \ | |
| 85 V(WordXor) \ | |
| 86 V(WordShl) \ | |
| 87 V(WordShr) \ | |
| 88 V(WordSar) \ | |
| 89 V(WordRor) \ | |
| 90 V(Word32Or) \ | |
| 91 V(Word32And) \ | |
| 92 V(Word32Xor) \ | |
| 93 V(Word32Shl) \ | |
| 94 V(Word32Shr) \ | |
| 95 V(Word32Sar) \ | |
| 96 V(Word32Ror) \ | |
| 97 V(Word64Or) \ | |
| 98 V(Word64And) \ | |
| 99 V(Word64Xor) \ | |
| 100 V(Word64Shr) \ | |
| 101 V(Word64Sar) \ | |
| 102 V(Word64Ror) | |
| 103 | |
| 104 #define CODE_STUB_ASSEMBLER_UNARY_OP_LIST(V) \ | |
| 105 V(Float64Neg) \ | |
| 106 V(Float64Sqrt) \ | |
| 107 V(ChangeFloat64ToUint32) \ | |
| 108 V(ChangeInt32ToFloat64) \ | |
| 109 V(ChangeInt32ToInt64) \ | |
| 110 V(ChangeUint32ToFloat64) \ | |
| 111 V(ChangeUint32ToUint64) \ | |
| 112 V(Word32Clz) | |
| 113 | |
| 114 class CodeStubAssembler { | |
| 115 public: | |
| 116 // Create with CallStub linkage. | |
| 117 // |result_size| specifies the number of results returned by the stub. | |
| 118 // TODO(rmcilroy): move result_size to the CallInterfaceDescriptor. | |
| 119 CodeStubAssembler(Isolate* isolate, Zone* zone, | |
| 120 const CallInterfaceDescriptor& descriptor, | |
| 121 Code::Flags flags, const char* name, | |
| 122 size_t result_size = 1); | |
| 123 | |
| 124 // Create with JSCall linkage. | |
| 125 CodeStubAssembler(Isolate* isolate, Zone* zone, int parameter_count, | |
| 126 Code::Flags flags, const char* name); | |
| 127 | |
| 128 virtual ~CodeStubAssembler(); | |
| 129 | |
| 130 Handle<Code> GenerateCode(); | |
| 131 | |
| 132 class Label; | |
| 133 class Variable { | |
| 134 public: | |
| 135 explicit Variable(CodeStubAssembler* assembler, MachineRepresentation rep); | |
| 136 void Bind(Node* value); | |
| 137 Node* value() const; | |
| 138 MachineRepresentation rep() const; | |
| 139 bool IsBound() const; | |
| 140 | |
| 141 private: | |
| 142 friend class CodeStubAssembler; | |
| 143 class Impl; | |
| 144 Impl* impl_; | |
| 145 }; | |
| 146 | |
| 147 enum AllocationFlag : uint8_t { | |
| 148 kNone = 0, | |
| 149 kDoubleAlignment = 1, | |
| 150 kPretenured = 1 << 1 | |
| 151 }; | |
| 152 | |
| 153 typedef base::Flags<AllocationFlag> AllocationFlags; | |
| 154 | |
| 155 // =========================================================================== | |
| 156 // Base Assembler | |
| 157 // =========================================================================== | |
| 158 | |
| 159 // Constants. | |
| 160 Node* Int32Constant(int value); | |
| 161 Node* IntPtrConstant(intptr_t value); | |
| 162 Node* NumberConstant(double value); | |
| 163 Node* SmiConstant(Smi* value); | |
| 164 Node* HeapConstant(Handle<HeapObject> object); | |
| 165 Node* BooleanConstant(bool value); | |
| 166 Node* ExternalConstant(ExternalReference address); | |
| 167 Node* Float64Constant(double value); | |
| 168 Node* BooleanMapConstant(); | |
| 169 Node* EmptyStringConstant(); | |
| 170 Node* HeapNumberMapConstant(); | |
| 171 Node* NaNConstant(); | |
| 172 Node* NoContextConstant(); | |
| 173 Node* NullConstant(); | |
| 174 Node* UndefinedConstant(); | |
| 175 | |
| 176 Node* Parameter(int value); | |
| 177 void Return(Node* value); | |
| 178 | |
| 179 void Bind(Label* label); | |
| 180 void Goto(Label* label); | |
| 181 void GotoIf(Node* condition, Label* true_label); | |
| 182 void GotoUnless(Node* condition, Label* false_label); | |
| 183 void Branch(Node* condition, Label* true_label, Label* false_label); | |
| 184 | |
| 185 void Switch(Node* index, Label* default_label, int32_t* case_values, | |
| 186 Label** case_labels, size_t case_count); | |
| 187 | |
| 188 // Access to the frame pointer | |
| 189 Node* LoadFramePointer(); | |
| 190 Node* LoadParentFramePointer(); | |
| 191 | |
| 192 // Access to the stack pointer | |
| 193 Node* LoadStackPointer(); | |
| 194 | |
| 195 // Load raw memory location. | |
| 196 Node* Load(MachineType rep, Node* base); | |
| 197 Node* Load(MachineType rep, Node* base, Node* index); | |
| 198 | |
| 199 // Store value to raw memory location. | |
| 200 Node* Store(MachineRepresentation rep, Node* base, Node* value); | |
| 201 Node* Store(MachineRepresentation rep, Node* base, Node* index, Node* value); | |
| 202 Node* StoreNoWriteBarrier(MachineRepresentation rep, Node* base, Node* value); | |
| 203 Node* StoreNoWriteBarrier(MachineRepresentation rep, Node* base, Node* index, | |
| 204 Node* value); | |
| 205 | |
| 206 // Basic arithmetic operations. | |
| 207 #define DECLARE_CODE_STUB_ASSEMBER_BINARY_OP(name) Node* name(Node* a, Node* b); | |
| 208 CODE_STUB_ASSEMBLER_BINARY_OP_LIST(DECLARE_CODE_STUB_ASSEMBER_BINARY_OP) | |
| 209 #undef DECLARE_CODE_STUB_ASSEMBER_BINARY_OP | |
| 210 | |
| 211 Node* WordShl(Node* value, int shift); | |
| 212 | |
| 213 // Unary | |
| 214 #define DECLARE_CODE_STUB_ASSEMBER_UNARY_OP(name) Node* name(Node* a); | |
| 215 CODE_STUB_ASSEMBLER_UNARY_OP_LIST(DECLARE_CODE_STUB_ASSEMBER_UNARY_OP) | |
| 216 #undef DECLARE_CODE_STUB_ASSEMBER_UNARY_OP | |
| 217 | |
| 218 // Projections | |
| 219 Node* Projection(int index, Node* value); | |
| 220 | |
| 221 // Calls | |
| 222 Node* CallRuntime(Runtime::FunctionId function_id, Node* context); | |
| 223 Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1); | |
| 224 Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, | |
| 225 Node* arg2); | |
| 226 Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, | |
| 227 Node* arg2, Node* arg3); | |
| 228 Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, | |
| 229 Node* arg2, Node* arg3, Node* arg4); | |
| 230 Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1, | |
| 231 Node* arg2, Node* arg3, Node* arg4, Node* arg5); | |
| 232 | |
| 233 Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context); | |
| 234 Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, | |
| 235 Node* arg1); | |
| 236 Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, | |
| 237 Node* arg1, Node* arg2); | |
| 238 Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, | |
| 239 Node* arg1, Node* arg2, Node* arg3); | |
| 240 Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context, | |
| 241 Node* arg1, Node* arg2, Node* arg3, Node* arg4); | |
| 242 | |
| 243 Node* CallStub(Callable const& callable, Node* context, Node* arg1, | |
| 244 size_t result_size = 1); | |
| 245 Node* CallStub(Callable const& callable, Node* context, Node* arg1, | |
| 246 Node* arg2, size_t result_size = 1); | |
| 247 Node* CallStub(Callable const& callable, Node* context, Node* arg1, | |
| 248 Node* arg2, Node* arg3, size_t result_size = 1); | |
| 249 | |
| 250 Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, | |
| 251 Node* context, Node* arg1, size_t result_size = 1); | |
| 252 Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, | |
| 253 Node* context, Node* arg1, Node* arg2, size_t result_size = 1); | |
| 254 Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, | |
| 255 Node* context, Node* arg1, Node* arg2, Node* arg3, | |
| 256 size_t result_size = 1); | |
| 257 Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, | |
| 258 Node* context, Node* arg1, Node* arg2, Node* arg3, Node* arg4, | |
| 259 size_t result_size = 1); | |
| 260 Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target, | |
| 261 Node* context, Node* arg1, Node* arg2, Node* arg3, Node* arg4, | |
| 262 Node* arg5, size_t result_size = 1); | |
| 263 | |
| 264 Node* TailCallStub(Callable const& callable, Node* context, Node* arg1, | |
| 265 Node* arg2, size_t result_size = 1); | |
| 266 Node* TailCallStub(const CallInterfaceDescriptor& descriptor, Node* target, | |
| 267 Node* context, Node* arg1, Node* arg2, | |
| 268 size_t result_size = 1); | |
| 269 | |
| 270 Node* TailCallBytecodeDispatch(const CallInterfaceDescriptor& descriptor, | |
| 271 Node* code_target_address, Node** args); | |
| 272 | |
| 273 // =========================================================================== | |
| 274 // Macros | |
| 275 // =========================================================================== | |
| 276 | |
| 277 // Float64 operations. | |
| 278 Node* Float64Ceil(Node* x); | |
| 279 Node* Float64Floor(Node* x); | |
| 280 Node* Float64Round(Node* x); | |
| 281 Node* Float64Trunc(Node* x); | |
| 282 | |
| 283 // Tag a Word as a Smi value. | |
| 284 Node* SmiTag(Node* value); | |
| 285 // Untag a Smi value as a Word. | |
| 286 Node* SmiUntag(Node* value); | |
| 287 Node* SmiToWord(Node* value) { return SmiUntag(value); } | |
| 288 | |
| 289 // Smi conversions. | |
| 290 Node* SmiToFloat64(Node* value); | |
| 291 Node* SmiFromWord32(Node* value); | |
| 292 Node* SmiToWord32(Node* value); | |
| 293 | |
| 294 // Smi operations. | |
| 295 Node* SmiAdd(Node* a, Node* b); | |
| 296 Node* SmiAddWithOverflow(Node* a, Node* b); | |
| 297 Node* SmiSub(Node* a, Node* b); | |
| 298 Node* SmiSubWithOverflow(Node* a, Node* b); | |
| 299 Node* SmiEqual(Node* a, Node* b); | |
| 300 Node* SmiAboveOrEqual(Node* a, Node* b); | |
| 301 Node* SmiLessThan(Node* a, Node* b); | |
| 302 Node* SmiLessThanOrEqual(Node* a, Node* b); | |
| 303 Node* SmiMin(Node* a, Node* b); | |
| 304 | |
| 305 // Load a value from the root array. | |
| 306 Node* LoadRoot(Heap::RootListIndex root_index); | |
| 307 | |
| 308 // Check a value for smi-ness | |
| 309 Node* WordIsSmi(Node* a); | |
| 310 | |
| 311 // Check that the value is a positive smi. | |
| 312 Node* WordIsPositiveSmi(Node* a); | |
| 313 | |
| 314 // Load an object pointer from a buffer that isn't in the heap. | |
| 315 Node* LoadBufferObject(Node* buffer, int offset, | |
| 316 MachineType rep = MachineType::AnyTagged()); | |
| 317 // Load a field from an object on the heap. | |
| 318 Node* LoadObjectField(Node* object, int offset, | |
| 319 MachineType rep = MachineType::AnyTagged()); | |
| 320 // Store a field to an object on the heap. | |
| 321 Node* StoreObjectFieldNoWriteBarrier( | |
| 322 Node* object, int offset, Node* value, | |
| 323 MachineRepresentation rep = MachineRepresentation::kTagged); | |
| 324 // Load the floating point value of a HeapNumber. | |
| 325 Node* LoadHeapNumberValue(Node* object); | |
| 326 // Store the floating point value of a HeapNumber. | |
| 327 Node* StoreHeapNumberValue(Node* object, Node* value); | |
| 328 // Truncate the floating point value of a HeapNumber to an Int32. | |
| 329 Node* TruncateHeapNumberValueToWord32(Node* object); | |
| 330 // Load the bit field of a Map. | |
| 331 Node* LoadMapBitField(Node* map); | |
| 332 // Load bit field 2 of a map. | |
| 333 Node* LoadMapBitField2(Node* map); | |
| 334 // Load bit field 3 of a map. | |
| 335 Node* LoadMapBitField3(Node* map); | |
| 336 // Load the instance type of a map. | |
| 337 Node* LoadMapInstanceType(Node* map); | |
| 338 // Load the instance descriptors of a map. | |
| 339 Node* LoadMapDescriptors(Node* map); | |
| 340 | |
| 341 // Load the hash field of a name. | |
| 342 Node* LoadNameHash(Node* name); | |
| 343 // Load the instance size of a Map. | |
| 344 Node* LoadMapInstanceSize(Node* map); | |
| 345 | |
| 346 // Load an array element from a FixedArray. | |
| 347 Node* LoadFixedArrayElementInt32Index(Node* object, Node* int32_index, | |
| 348 int additional_offset = 0); | |
| 349 Node* LoadFixedArrayElementSmiIndex(Node* object, Node* smi_index, | |
| 350 int additional_offset = 0); | |
| 351 Node* LoadFixedArrayElementConstantIndex(Node* object, int index); | |
| 352 | |
| 353 // Allocate an object of the given size. | |
| 354 Node* Allocate(int size, AllocationFlags flags = kNone); | |
| 355 Node* InnerAllocate(Node* previous, int offset); | |
| 356 // Allocate a HeapNumber without initializing its value. | |
| 357 Node* AllocateHeapNumber(); | |
| 358 // Allocate a HeapNumber with a specific value. | |
| 359 Node* AllocateHeapNumberWithValue(Node* value); | |
| 360 // Allocate a SeqOneByteString with the given length. | |
| 361 Node* AllocateSeqOneByteString(int length); | |
| 362 // Allocate a SeqTwoByteString with the given length. | |
| 363 Node* AllocateSeqTwoByteString(int length); | |
| 364 | |
| 365 // Store an array element to a FixedArray. | |
| 366 Node* StoreFixedArrayElementInt32Index(Node* object, Node* index, | |
| 367 Node* value); | |
| 368 Node* StoreFixedArrayElementNoWriteBarrier(Node* object, Node* index, | |
| 369 Node* value); | |
| 370 // Load the Map of an HeapObject. | |
| 371 Node* LoadMap(Node* object); | |
| 372 // Store the Map of an HeapObject. | |
| 373 Node* StoreMapNoWriteBarrier(Node* object, Node* map); | |
| 374 // Load the instance type of an HeapObject. | |
| 375 Node* LoadInstanceType(Node* object); | |
| 376 | |
| 377 // Load the elements backing store of a JSObject. | |
| 378 Node* LoadElements(Node* object); | |
| 379 // Load the length of a fixed array base instance. | |
| 380 Node* LoadFixedArrayBaseLength(Node* array); | |
| 381 | |
| 382 // Returns a node that is true if the given bit is set in |word32|. | |
| 383 template <typename T> | |
| 384 Node* BitFieldDecode(Node* word32) { | |
| 385 return BitFieldDecode(word32, T::kShift, T::kMask); | |
| 386 } | |
| 387 | |
| 388 Node* BitFieldDecode(Node* word32, uint32_t shift, uint32_t mask); | |
| 389 | |
| 390 // Conversions. | |
| 391 Node* ChangeFloat64ToTagged(Node* value); | |
| 392 Node* ChangeInt32ToTagged(Node* value); | |
| 393 Node* ChangeUint32ToTagged(Node* value); | |
| 394 Node* TruncateTaggedToFloat64(Node* context, Node* value); | |
| 395 Node* TruncateTaggedToWord32(Node* context, Node* value); | |
| 396 // Truncate to int32 using JavaScript truncation mode. | |
| 397 Node* TruncateFloat64ToInt32(Node* value); | |
| 398 | |
| 399 // Type conversions. | |
| 400 // Throws a TypeError for {method_name} if {value} is not coercible to Object, | |
| 401 // or returns the {value} converted to a String otherwise. | |
| 402 Node* ToThisString(Node* context, Node* value, char const* method_name); | |
| 403 | |
| 404 // String helpers. | |
| 405 // Load a character from a String (might flatten a ConsString). | |
| 406 Node* StringCharCodeAt(Node* string, Node* smi_index); | |
| 407 // Return the single character string with only {code}. | |
| 408 Node* StringFromCharCode(Node* code); | |
| 409 | |
| 410 // Branching helpers. | |
| 411 // TODO(danno): Can we be more cleverish wrt. edge-split? | |
| 412 void BranchIf(Node* condition, Label* if_true, Label* if_false); | |
| 413 | |
| 414 #define BRANCH_HELPER(name) \ | |
| 415 void BranchIf##name(Node* a, Node* b, Label* if_true, Label* if_false) { \ | |
| 416 BranchIf(name(a, b), if_true, if_false); \ | |
| 417 } | |
| 418 CODE_STUB_ASSEMBLER_COMPARE_BINARY_OP_LIST(BRANCH_HELPER) | |
| 419 #undef BRANCH_HELPER | |
| 420 | |
| 421 void BranchIfSmiLessThan(Node* a, Node* b, Label* if_true, Label* if_false) { | |
| 422 BranchIf(SmiLessThan(a, b), if_true, if_false); | |
| 423 } | |
| 424 | |
| 425 void BranchIfSmiLessThanOrEqual(Node* a, Node* b, Label* if_true, | |
| 426 Label* if_false) { | |
| 427 BranchIf(SmiLessThanOrEqual(a, b), if_true, if_false); | |
| 428 } | |
| 429 | |
| 430 void BranchIfFloat64IsNaN(Node* value, Label* if_true, Label* if_false) { | |
| 431 BranchIfFloat64Equal(value, value, if_false, if_true); | |
| 432 } | |
| 433 | |
| 434 // Helpers which delegate to RawMachineAssembler. | |
| 435 Factory* factory() const; | |
| 436 Isolate* isolate() const; | |
| 437 Zone* zone() const; | |
| 438 | |
| 439 protected: | |
| 440 // Protected helpers which delegate to RawMachineAssembler. | |
| 441 Graph* graph() const; | |
| 442 | |
| 443 // Enables subclasses to perform operations before and after a call. | |
| 444 virtual void CallPrologue(); | |
| 445 virtual void CallEpilogue(); | |
| 446 | |
| 447 private: | |
| 448 friend class CodeStubAssemblerTester; | |
| 449 | |
| 450 CodeStubAssembler(Isolate* isolate, Zone* zone, | |
| 451 CallDescriptor* call_descriptor, Code::Flags flags, | |
| 452 const char* name); | |
| 453 | |
| 454 Node* CallN(CallDescriptor* descriptor, Node* code_target, Node** args); | |
| 455 Node* TailCallN(CallDescriptor* descriptor, Node* code_target, Node** args); | |
| 456 | |
| 457 Node* SmiShiftBitsConstant(); | |
| 458 | |
| 459 Node* AllocateRawAligned(Node* size_in_bytes, AllocationFlags flags, | |
| 460 Node* top_address, Node* limit_address); | |
| 461 Node* AllocateRawUnaligned(Node* size_in_bytes, AllocationFlags flags, | |
| 462 Node* top_adddress, Node* limit_address); | |
| 463 | |
| 464 base::SmartPointer<RawMachineAssembler> raw_assembler_; | |
| 465 Code::Flags flags_; | |
| 466 const char* name_; | |
| 467 bool code_generated_; | |
| 468 ZoneVector<Variable::Impl*> variables_; | |
| 469 | |
| 470 DISALLOW_COPY_AND_ASSIGN(CodeStubAssembler); | |
| 471 }; | |
| 472 | |
| 473 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags); | |
| 474 | |
| 475 class CodeStubAssembler::Label { | |
| 476 public: | |
| 477 enum Type { kDeferred, kNonDeferred }; | |
| 478 | |
| 479 explicit Label(CodeStubAssembler* assembler, | |
| 480 CodeStubAssembler::Label::Type type = | |
| 481 CodeStubAssembler::Label::kNonDeferred) | |
| 482 : CodeStubAssembler::Label(assembler, 0, nullptr, type) {} | |
| 483 Label(CodeStubAssembler* assembler, | |
| 484 CodeStubAssembler::Variable* merged_variable, | |
| 485 CodeStubAssembler::Label::Type type = | |
| 486 CodeStubAssembler::Label::kNonDeferred) | |
| 487 : CodeStubAssembler::Label(assembler, 1, &merged_variable, type) {} | |
| 488 Label(CodeStubAssembler* assembler, int merged_variable_count, | |
| 489 CodeStubAssembler::Variable** merged_variables, | |
| 490 CodeStubAssembler::Label::Type type = | |
| 491 CodeStubAssembler::Label::kNonDeferred); | |
| 492 ~Label() {} | |
| 493 | |
| 494 private: | |
| 495 friend class CodeStubAssembler; | |
| 496 | |
| 497 void Bind(); | |
| 498 void MergeVariables(); | |
| 499 | |
| 500 bool bound_; | |
| 501 size_t merge_count_; | |
| 502 CodeStubAssembler* assembler_; | |
| 503 RawMachineLabel* label_; | |
| 504 // Map of variables that need to be merged to their phi nodes (or placeholders | |
| 505 // for those phis). | |
| 506 std::map<Variable::Impl*, Node*> variable_phis_; | |
| 507 // Map of variables to the list of value nodes that have been added from each | |
| 508 // merge path in their order of merging. | |
| 509 std::map<Variable::Impl*, std::vector<Node*>> variable_merges_; | |
| 510 }; | |
| 511 | |
| 512 } // namespace compiler | |
| 513 } // namespace internal | |
| 514 } // namespace v8 | |
| 515 | |
| 516 #endif // V8_COMPILER_CODE_STUB_ASSEMBLER_H_ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1875583003:
Separate CodeAssembler and CodeStubAssembler (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master