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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 36 #include "scopes.h" | 36 #include "scopes.h" |
| 37 #include "v8utils.h" | 37 #include "v8utils.h" |
| 38 | 38 |
| 39 namespace v8 { | 39 namespace v8 { |
| 40 namespace internal { | 40 namespace internal { |
| 41 | 41 |
| 42 // Forward declarations. | 42 // Forward declarations. |
| 43 class LDeferredCode; | 43 class LDeferredCode; |
| 44 class SafepointGenerator; | 44 class SafepointGenerator; |
| 45 | 45 |
| 46 class LCodeGen BASE_EMBEDDED { | 46 class LCodeGen V8_FINAL BASE_EMBEDDED { |
| 47 public: | 47 public: |
| 48 LCodeGen(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info) | 48 LCodeGen(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info) |
| 49 : zone_(info->zone()), | 49 : zone_(info->zone()), |
| 50 chunk_(static_cast<LPlatformChunk*>(chunk)), | 50 chunk_(static_cast<LPlatformChunk*>(chunk)), |
| 51 masm_(assembler), | 51 masm_(assembler), |
| 52 info_(info), | 52 info_(info), |
| 53 current_block_(-1), | 53 current_block_(-1), |
| 54 current_instruction_(-1), | 54 current_instruction_(-1), |
| 55 instructions_(chunk->instructions()), | 55 instructions_(chunk->instructions()), |
| 56 deoptimizations_(4, info->zone()), | 56 deoptimizations_(4, info->zone()), |
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| 413 // itself is emitted at the end of the generated code. | 413 // itself is emitted at the end of the generated code. |
| 414 SafepointTableBuilder safepoints_; | 414 SafepointTableBuilder safepoints_; |
| 415 | 415 |
| 416 // Compiler from a set of parallel moves to a sequential list of moves. | 416 // Compiler from a set of parallel moves to a sequential list of moves. |
| 417 LGapResolver resolver_; | 417 LGapResolver resolver_; |
| 418 | 418 |
| 419 Safepoint::Kind expected_safepoint_kind_; | 419 Safepoint::Kind expected_safepoint_kind_; |
| 420 | 420 |
| 421 int old_position_; | 421 int old_position_; |
| 422 | 422 |
| 423 class PushSafepointRegistersScope BASE_EMBEDDED { | 423 class PushSafepointRegistersScope V8_FINAL BASE_EMBEDDED { |
| 424 public: | 424 public: |
| 425 PushSafepointRegistersScope(LCodeGen* codegen, | 425 PushSafepointRegistersScope(LCodeGen* codegen, |
| 426 Safepoint::Kind kind) | 426 Safepoint::Kind kind) |
| 427 : codegen_(codegen) { | 427 : codegen_(codegen) { |
| 428 ASSERT(codegen_->info()->is_calling()); | 428 ASSERT(codegen_->info()->is_calling()); |
| 429 ASSERT(codegen_->expected_safepoint_kind_ == Safepoint::kSimple); | 429 ASSERT(codegen_->expected_safepoint_kind_ == Safepoint::kSimple); |
| 430 codegen_->expected_safepoint_kind_ = kind; | 430 codegen_->expected_safepoint_kind_ = kind; |
| 431 | 431 |
| 432 switch (codegen_->expected_safepoint_kind_) { | 432 switch (codegen_->expected_safepoint_kind_) { |
| 433 case Safepoint::kWithRegisters: | 433 case Safepoint::kWithRegisters: |
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| 461 LCodeGen* codegen_; | 461 LCodeGen* codegen_; |
| 462 }; | 462 }; |
| 463 | 463 |
| 464 friend class LDeferredCode; | 464 friend class LDeferredCode; |
| 465 friend class LEnvironment; | 465 friend class LEnvironment; |
| 466 friend class SafepointGenerator; | 466 friend class SafepointGenerator; |
| 467 DISALLOW_COPY_AND_ASSIGN(LCodeGen); | 467 DISALLOW_COPY_AND_ASSIGN(LCodeGen); |
| 468 }; | 468 }; |
| 469 | 469 |
| 470 | 470 |
| 471 class LDeferredCode: public ZoneObject { | 471 class LDeferredCode : public ZoneObject { |
| 472 public: | 472 public: |
| 473 explicit LDeferredCode(LCodeGen* codegen) | 473 explicit LDeferredCode(LCodeGen* codegen) |
| 474 : codegen_(codegen), | 474 : codegen_(codegen), |
| 475 external_exit_(NULL), | 475 external_exit_(NULL), |
| 476 instruction_index_(codegen->current_instruction_) { | 476 instruction_index_(codegen->current_instruction_) { |
| 477 codegen->AddDeferredCode(this); | 477 codegen->AddDeferredCode(this); |
| 478 } | 478 } |
| 479 | 479 |
| 480 virtual ~LDeferredCode() { } | 480 virtual ~LDeferredCode() {} |
| 481 virtual void Generate() = 0; | 481 virtual void Generate() = 0; |
| 482 virtual LInstruction* instr() = 0; | 482 virtual LInstruction* instr() = 0; |
| 483 | 483 |
| 484 void SetExit(Label* exit) { external_exit_ = exit; } | 484 void SetExit(Label* exit) { external_exit_ = exit; } |
| 485 Label* entry() { return &entry_; } | 485 Label* entry() { return &entry_; } |
| 486 Label* exit() { return external_exit_ != NULL ? external_exit_ : &exit_; } | 486 Label* exit() { return external_exit_ != NULL ? external_exit_ : &exit_; } |
| 487 int instruction_index() const { return instruction_index_; } | 487 int instruction_index() const { return instruction_index_; } |
| 488 | 488 |
| 489 protected: | 489 protected: |
| 490 LCodeGen* codegen() const { return codegen_; } | 490 LCodeGen* codegen() const { return codegen_; } |
| 491 MacroAssembler* masm() const { return codegen_->masm(); } | 491 MacroAssembler* masm() const { return codegen_->masm(); } |
| 492 | 492 |
| 493 private: | 493 private: |
| 494 LCodeGen* codegen_; | 494 LCodeGen* codegen_; |
| 495 Label entry_; | 495 Label entry_; |
| 496 Label exit_; | 496 Label exit_; |
| 497 Label* external_exit_; | 497 Label* external_exit_; |
| 498 int instruction_index_; | 498 int instruction_index_; |
| 499 }; | 499 }; |
| 500 | 500 |
| 501 } } // namespace v8::internal | 501 } } // namespace v8::internal |
| 502 | 502 |
| 503 #endif // V8_ARM_LITHIUM_CODEGEN_ARM_H_ | 503 #endif // V8_ARM_LITHIUM_CODEGEN_ARM_H_ |
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