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| 1 // Copyright 2014 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_PPC_LITHIUM_CODEGEN_PPC_H_ | |
| 6 #define V8_PPC_LITHIUM_CODEGEN_PPC_H_ | |
| 7 | |
| 8 #include "src/ppc/lithium-ppc.h" | |
| 9 | |
| 10 #include "src/ppc/lithium-gap-resolver-ppc.h" | |
| 11 #include "src/deoptimizer.h" | |
| 12 #include "src/lithium-codegen.h" | |
| 13 #include "src/safepoint-table.h" | |
| 14 #include "src/scopes.h" | |
| 15 #include "src/utils.h" | |
| 16 | |
| 17 namespace v8 { | |
| 18 namespace internal { | |
| 19 | |
| 20 // Forward declarations. | |
| 21 class LDeferredCode; | |
| 22 class SafepointGenerator; | |
| 23 | |
| 24 class LCodeGen : public LCodeGenBase { | |
| 25 public: | |
| 26 LCodeGen(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info) | |
| 27 : LCodeGenBase(chunk, assembler, info), | |
| 28 deoptimizations_(4, info->zone()), | |
| 29 jump_table_(4, info->zone()), | |
| 30 inlined_function_count_(0), | |
| 31 scope_(info->scope()), | |
| 32 translations_(info->zone()), | |
| 33 deferred_(8, info->zone()), | |
| 34 osr_pc_offset_(-1), | |
| 35 frame_is_built_(false), | |
| 36 safepoints_(info->zone()), | |
| 37 resolver_(this), | |
| 38 expected_safepoint_kind_(Safepoint::kSimple) { | |
| 39 PopulateDeoptimizationLiteralsWithInlinedFunctions(); | |
| 40 } | |
| 41 | |
| 42 | |
| 43 int LookupDestination(int block_id) const { | |
| 44 return chunk()->LookupDestination(block_id); | |
| 45 } | |
| 46 | |
| 47 bool IsNextEmittedBlock(int block_id) const { | |
| 48 return LookupDestination(block_id) == GetNextEmittedBlock(); | |
| 49 } | |
| 50 | |
| 51 bool NeedsEagerFrame() const { | |
| 52 return GetStackSlotCount() > 0 || info()->is_non_deferred_calling() || | |
| 53 !info()->IsStub() || info()->requires_frame(); | |
| 54 } | |
| 55 bool NeedsDeferredFrame() const { | |
| 56 return !NeedsEagerFrame() && info()->is_deferred_calling(); | |
| 57 } | |
| 58 | |
| 59 LinkRegisterStatus GetLinkRegisterState() const { | |
| 60 return frame_is_built_ ? kLRHasBeenSaved : kLRHasNotBeenSaved; | |
| 61 } | |
| 62 | |
| 63 // Support for converting LOperands to assembler types. | |
| 64 // LOperand must be a register. | |
| 65 Register ToRegister(LOperand* op) const; | |
| 66 | |
| 67 // LOperand is loaded into scratch, unless already a register. | |
| 68 Register EmitLoadRegister(LOperand* op, Register scratch); | |
| 69 | |
| 70 // LConstantOperand must be an Integer32 or Smi | |
| 71 void EmitLoadIntegerConstant(LConstantOperand* const_op, Register dst); | |
| 72 | |
| 73 // LOperand must be a double register. | |
| 74 DoubleRegister ToDoubleRegister(LOperand* op) const; | |
| 75 | |
| 76 intptr_t ToRepresentation(LConstantOperand* op, | |
| 77 const Representation& r) const; | |
| 78 int32_t ToInteger32(LConstantOperand* op) const; | |
| 79 Smi* ToSmi(LConstantOperand* op) const; | |
| 80 double ToDouble(LConstantOperand* op) const; | |
| 81 Operand ToOperand(LOperand* op); | |
| 82 MemOperand ToMemOperand(LOperand* op) const; | |
| 83 // Returns a MemOperand pointing to the high word of a DoubleStackSlot. | |
| 84 MemOperand ToHighMemOperand(LOperand* op) const; | |
| 85 | |
| 86 bool IsInteger32(LConstantOperand* op) const; | |
| 87 bool IsSmi(LConstantOperand* op) const; | |
| 88 Handle<Object> ToHandle(LConstantOperand* op) const; | |
| 89 | |
| 90 // Try to generate code for the entire chunk, but it may fail if the | |
| 91 // chunk contains constructs we cannot handle. Returns true if the | |
| 92 // code generation attempt succeeded. | |
| 93 bool GenerateCode(); | |
| 94 | |
| 95 // Finish the code by setting stack height, safepoint, and bailout | |
| 96 // information on it. | |
| 97 void FinishCode(Handle<Code> code); | |
| 98 | |
| 99 // Deferred code support. | |
| 100 void DoDeferredNumberTagD(LNumberTagD* instr); | |
| 101 | |
| 102 enum IntegerSignedness { SIGNED_INT32, UNSIGNED_INT32 }; | |
| 103 void DoDeferredNumberTagIU(LInstruction* instr, LOperand* value, | |
| 104 LOperand* temp1, LOperand* temp2, | |
| 105 IntegerSignedness signedness); | |
| 106 | |
| 107 void DoDeferredTaggedToI(LTaggedToI* instr); | |
| 108 void DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr); | |
| 109 void DoDeferredStackCheck(LStackCheck* instr); | |
| 110 void DoDeferredMaybeGrowElements(LMaybeGrowElements* instr); | |
| 111 void DoDeferredStringCharCodeAt(LStringCharCodeAt* instr); | |
| 112 void DoDeferredStringCharFromCode(LStringCharFromCode* instr); | |
| 113 void DoDeferredAllocate(LAllocate* instr); | |
| 114 void DoDeferredInstanceMigration(LCheckMaps* instr, Register object); | |
| 115 void DoDeferredLoadMutableDouble(LLoadFieldByIndex* instr, Register result, | |
| 116 Register object, Register index); | |
| 117 | |
| 118 // Parallel move support. | |
| 119 void DoParallelMove(LParallelMove* move); | |
| 120 void DoGap(LGap* instr); | |
| 121 | |
| 122 MemOperand PrepareKeyedOperand(Register key, Register base, | |
| 123 bool key_is_constant, bool key_is_tagged, | |
| 124 int constant_key, int element_size_shift, | |
| 125 int base_offset); | |
| 126 | |
| 127 // Emit frame translation commands for an environment. | |
| 128 void WriteTranslation(LEnvironment* environment, Translation* translation); | |
| 129 | |
| 130 // Declare methods that deal with the individual node types. | |
| 131 #define DECLARE_DO(type) void Do##type(L##type* node); | |
| 132 LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_DO) | |
| 133 #undef DECLARE_DO | |
| 134 | |
| 135 private: | |
| 136 LanguageMode language_mode() const { return info()->language_mode(); } | |
| 137 | |
| 138 Scope* scope() const { return scope_; } | |
| 139 | |
| 140 Register scratch0() { return kLithiumScratch; } | |
| 141 DoubleRegister double_scratch0() { return kScratchDoubleReg; } | |
| 142 | |
| 143 LInstruction* GetNextInstruction(); | |
| 144 | |
| 145 void EmitClassOfTest(Label* if_true, Label* if_false, | |
| 146 Handle<String> class_name, Register input, | |
| 147 Register temporary, Register temporary2); | |
| 148 | |
| 149 int GetStackSlotCount() const { return chunk()->spill_slot_count(); } | |
| 150 | |
| 151 void AddDeferredCode(LDeferredCode* code) { deferred_.Add(code, zone()); } | |
| 152 | |
| 153 void SaveCallerDoubles(); | |
| 154 void RestoreCallerDoubles(); | |
| 155 | |
| 156 // Code generation passes. Returns true if code generation should | |
| 157 // continue. | |
| 158 void GenerateBodyInstructionPre(LInstruction* instr) override; | |
| 159 bool GeneratePrologue(); | |
| 160 bool GenerateDeferredCode(); | |
| 161 bool GenerateJumpTable(); | |
| 162 bool GenerateSafepointTable(); | |
| 163 | |
| 164 // Generates the custom OSR entrypoint and sets the osr_pc_offset. | |
| 165 void GenerateOsrPrologue(); | |
| 166 | |
| 167 enum SafepointMode { | |
| 168 RECORD_SIMPLE_SAFEPOINT, | |
| 169 RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS | |
| 170 }; | |
| 171 | |
| 172 void CallCode(Handle<Code> code, RelocInfo::Mode mode, LInstruction* instr); | |
| 173 | |
| 174 void CallCodeGeneric(Handle<Code> code, RelocInfo::Mode mode, | |
| 175 LInstruction* instr, SafepointMode safepoint_mode); | |
| 176 | |
| 177 void CallRuntime(const Runtime::Function* function, int num_arguments, | |
| 178 LInstruction* instr, | |
| 179 SaveFPRegsMode save_doubles = kDontSaveFPRegs); | |
| 180 | |
| 181 void CallRuntime(Runtime::FunctionId id, int num_arguments, | |
| 182 LInstruction* instr) { | |
| 183 const Runtime::Function* function = Runtime::FunctionForId(id); | |
| 184 CallRuntime(function, num_arguments, instr); | |
| 185 } | |
| 186 | |
| 187 void LoadContextFromDeferred(LOperand* context); | |
| 188 void CallRuntimeFromDeferred(Runtime::FunctionId id, int argc, | |
| 189 LInstruction* instr, LOperand* context); | |
| 190 | |
| 191 // Generate a direct call to a known function. Expects the function | |
| 192 // to be in r4. | |
| 193 void CallKnownFunction(Handle<JSFunction> function, | |
| 194 int formal_parameter_count, int arity, | |
| 195 LInstruction* instr); | |
| 196 | |
| 197 void RecordSafepointWithLazyDeopt(LInstruction* instr, | |
| 198 SafepointMode safepoint_mode); | |
| 199 | |
| 200 void RegisterEnvironmentForDeoptimization(LEnvironment* environment, | |
| 201 Safepoint::DeoptMode mode); | |
| 202 void DeoptimizeIf(Condition condition, LInstruction* instr, | |
| 203 Deoptimizer::DeoptReason deopt_reason, | |
| 204 Deoptimizer::BailoutType bailout_type, CRegister cr = cr7); | |
| 205 void DeoptimizeIf(Condition condition, LInstruction* instr, | |
| 206 Deoptimizer::DeoptReason deopt_reason, CRegister cr = cr7); | |
| 207 | |
| 208 void AddToTranslation(LEnvironment* environment, Translation* translation, | |
| 209 LOperand* op, bool is_tagged, bool is_uint32, | |
| 210 int* object_index_pointer, | |
| 211 int* dematerialized_index_pointer); | |
| 212 void PopulateDeoptimizationData(Handle<Code> code); | |
| 213 | |
| 214 void PopulateDeoptimizationLiteralsWithInlinedFunctions(); | |
| 215 | |
| 216 Register ToRegister(int index) const; | |
| 217 DoubleRegister ToDoubleRegister(int index) const; | |
| 218 | |
| 219 MemOperand BuildSeqStringOperand(Register string, LOperand* index, | |
| 220 String::Encoding encoding); | |
| 221 | |
| 222 void EmitMathAbs(LMathAbs* instr); | |
| 223 #if V8_TARGET_ARCH_PPC64 | |
| 224 void EmitInteger32MathAbs(LMathAbs* instr); | |
| 225 #endif | |
| 226 | |
| 227 // Support for recording safepoint and position information. | |
| 228 void RecordSafepoint(LPointerMap* pointers, Safepoint::Kind kind, | |
| 229 int arguments, Safepoint::DeoptMode mode); | |
| 230 void RecordSafepoint(LPointerMap* pointers, Safepoint::DeoptMode mode); | |
| 231 void RecordSafepoint(Safepoint::DeoptMode mode); | |
| 232 void RecordSafepointWithRegisters(LPointerMap* pointers, int arguments, | |
| 233 Safepoint::DeoptMode mode); | |
| 234 | |
| 235 void RecordAndWritePosition(int position) override; | |
| 236 | |
| 237 static Condition TokenToCondition(Token::Value op); | |
| 238 void EmitGoto(int block); | |
| 239 | |
| 240 // EmitBranch expects to be the last instruction of a block. | |
| 241 template <class InstrType> | |
| 242 void EmitBranch(InstrType instr, Condition condition, CRegister cr = cr7); | |
| 243 template <class InstrType> | |
| 244 void EmitTrueBranch(InstrType instr, Condition condition, CRegister cr = cr7); | |
| 245 template <class InstrType> | |
| 246 void EmitFalseBranch(InstrType instr, Condition condition, | |
| 247 CRegister cr = cr7); | |
| 248 void EmitNumberUntagD(LNumberUntagD* instr, Register input, | |
| 249 DoubleRegister result, NumberUntagDMode mode); | |
| 250 | |
| 251 // Emits optimized code for typeof x == "y". Modifies input register. | |
| 252 // Returns the condition on which a final split to | |
| 253 // true and false label should be made, to optimize fallthrough. | |
| 254 Condition EmitTypeofIs(Label* true_label, Label* false_label, Register input, | |
| 255 Handle<String> type_name); | |
| 256 | |
| 257 // Emits optimized code for %_IsString(x). Preserves input register. | |
| 258 // Returns the condition on which a final split to | |
| 259 // true and false label should be made, to optimize fallthrough. | |
| 260 Condition EmitIsString(Register input, Register temp1, Label* is_not_string, | |
| 261 SmiCheck check_needed); | |
| 262 | |
| 263 // Emits optimized code for %_IsConstructCall(). | |
| 264 // Caller should branch on equal condition. | |
| 265 void EmitIsConstructCall(Register temp1, Register temp2); | |
| 266 | |
| 267 // Emits optimized code to deep-copy the contents of statically known | |
| 268 // object graphs (e.g. object literal boilerplate). | |
| 269 void EmitDeepCopy(Handle<JSObject> object, Register result, Register source, | |
| 270 int* offset, AllocationSiteMode mode); | |
| 271 | |
| 272 void EnsureSpaceForLazyDeopt(int space_needed) override; | |
| 273 void DoLoadKeyedExternalArray(LLoadKeyed* instr); | |
| 274 void DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr); | |
| 275 void DoLoadKeyedFixedArray(LLoadKeyed* instr); | |
| 276 void DoStoreKeyedExternalArray(LStoreKeyed* instr); | |
| 277 void DoStoreKeyedFixedDoubleArray(LStoreKeyed* instr); | |
| 278 void DoStoreKeyedFixedArray(LStoreKeyed* instr); | |
| 279 | |
| 280 template <class T> | |
| 281 void EmitVectorLoadICRegisters(T* instr); | |
| 282 template <class T> | |
| 283 void EmitVectorStoreICRegisters(T* instr); | |
| 284 | |
| 285 ZoneList<LEnvironment*> deoptimizations_; | |
| 286 ZoneList<Deoptimizer::JumpTableEntry> jump_table_; | |
| 287 int inlined_function_count_; | |
| 288 Scope* const scope_; | |
| 289 TranslationBuffer translations_; | |
| 290 ZoneList<LDeferredCode*> deferred_; | |
| 291 int osr_pc_offset_; | |
| 292 bool frame_is_built_; | |
| 293 | |
| 294 // Builder that keeps track of safepoints in the code. The table | |
| 295 // itself is emitted at the end of the generated code. | |
| 296 SafepointTableBuilder safepoints_; | |
| 297 | |
| 298 // Compiler from a set of parallel moves to a sequential list of moves. | |
| 299 LGapResolver resolver_; | |
| 300 | |
| 301 Safepoint::Kind expected_safepoint_kind_; | |
| 302 | |
| 303 class PushSafepointRegistersScope final BASE_EMBEDDED { | |
| 304 public: | |
| 305 explicit PushSafepointRegistersScope(LCodeGen* codegen) | |
| 306 : codegen_(codegen) { | |
| 307 DCHECK(codegen_->info()->is_calling()); | |
| 308 DCHECK(codegen_->expected_safepoint_kind_ == Safepoint::kSimple); | |
| 309 codegen_->expected_safepoint_kind_ = Safepoint::kWithRegisters; | |
| 310 StoreRegistersStateStub stub(codegen_->isolate()); | |
| 311 codegen_->masm_->CallStub(&stub); | |
| 312 } | |
| 313 | |
| 314 ~PushSafepointRegistersScope() { | |
| 315 DCHECK(codegen_->expected_safepoint_kind_ == Safepoint::kWithRegisters); | |
| 316 RestoreRegistersStateStub stub(codegen_->isolate()); | |
| 317 codegen_->masm_->CallStub(&stub); | |
| 318 codegen_->expected_safepoint_kind_ = Safepoint::kSimple; | |
| 319 } | |
| 320 | |
| 321 private: | |
| 322 LCodeGen* codegen_; | |
| 323 }; | |
| 324 | |
| 325 friend class LDeferredCode; | |
| 326 friend class LEnvironment; | |
| 327 friend class SafepointGenerator; | |
| 328 DISALLOW_COPY_AND_ASSIGN(LCodeGen); | |
| 329 }; | |
| 330 | |
| 331 | |
| 332 class LDeferredCode : public ZoneObject { | |
| 333 public: | |
| 334 explicit LDeferredCode(LCodeGen* codegen) | |
| 335 : codegen_(codegen), | |
| 336 external_exit_(NULL), | |
| 337 instruction_index_(codegen->current_instruction_) { | |
| 338 codegen->AddDeferredCode(this); | |
| 339 } | |
| 340 | |
| 341 virtual ~LDeferredCode() {} | |
| 342 virtual void Generate() = 0; | |
| 343 virtual LInstruction* instr() = 0; | |
| 344 | |
| 345 void SetExit(Label* exit) { external_exit_ = exit; } | |
| 346 Label* entry() { return &entry_; } | |
| 347 Label* exit() { return external_exit_ != NULL ? external_exit_ : &exit_; } | |
| 348 int instruction_index() const { return instruction_index_; } | |
| 349 | |
| 350 protected: | |
| 351 LCodeGen* codegen() const { return codegen_; } | |
| 352 MacroAssembler* masm() const { return codegen_->masm(); } | |
| 353 | |
| 354 private: | |
| 355 LCodeGen* codegen_; | |
| 356 Label entry_; | |
| 357 Label exit_; | |
| 358 Label* external_exit_; | |
| 359 int instruction_index_; | |
| 360 }; | |
| 361 } // namespace internal | |
| 362 } // namespace v8 | |
| 363 | |
| 364 #endif // V8_PPC_LITHIUM_CODEGEN_PPC_H_ | |
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Chromium Code Reviews
Issue 1405363003:
Move Hydrogen and Lithium to src/crankshaft/ (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master