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1 // Copyright 2015 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/interpreter/bytecode-array-builder.h" | 5 #include "src/interpreter/bytecode-array-builder.h" |
6 | 6 |
7 namespace v8 { | 7 namespace v8 { |
8 namespace internal { | 8 namespace internal { |
9 namespace interpreter { | 9 namespace interpreter { |
10 | 10 |
11 BytecodeArrayBuilder::BytecodeArrayBuilder(Isolate* isolate, Zone* zone) | 11 BytecodeArrayBuilder::BytecodeArrayBuilder(Isolate* isolate, Zone* zone) |
12 : isolate_(isolate), | 12 : isolate_(isolate), |
13 zone_(zone), | 13 zone_(zone), |
14 bytecodes_(zone), | 14 bytecodes_(zone), |
15 bytecode_generated_(false), | 15 bytecode_generated_(false), |
16 last_block_end_(0), | 16 last_block_end_(0), |
17 last_bytecode_start_(~0), | 17 last_bytecode_start_(~0), |
18 return_seen_in_block_(false), | 18 exit_seen_in_block_(false), |
19 constants_map_(isolate->heap(), zone), | 19 constants_map_(isolate->heap(), zone), |
20 constants_(zone), | 20 constants_(zone), |
21 parameter_count_(-1), | 21 parameter_count_(-1), |
22 local_register_count_(-1), | 22 local_register_count_(-1), |
23 context_register_count_(-1), | 23 context_register_count_(-1), |
24 temporary_register_count_(0), | 24 temporary_register_count_(0), |
25 temporary_register_next_(0) {} | 25 temporary_register_next_(0) {} |
26 | 26 |
27 | 27 |
28 void BytecodeArrayBuilder::set_locals_count(int number_of_locals) { | 28 void BytecodeArrayBuilder::set_locals_count(int number_of_locals) { |
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557 return OutputJump(Bytecode::kJumpIfToBooleanTrue, label); | 557 return OutputJump(Bytecode::kJumpIfToBooleanTrue, label); |
558 } | 558 } |
559 | 559 |
560 | 560 |
561 BytecodeArrayBuilder& BytecodeArrayBuilder::JumpIfToBooleanFalse( | 561 BytecodeArrayBuilder& BytecodeArrayBuilder::JumpIfToBooleanFalse( |
562 BytecodeLabel* label) { | 562 BytecodeLabel* label) { |
563 return OutputJump(Bytecode::kJumpIfToBooleanFalse, label); | 563 return OutputJump(Bytecode::kJumpIfToBooleanFalse, label); |
564 } | 564 } |
565 | 565 |
566 | 566 |
| 567 BytecodeArrayBuilder& BytecodeArrayBuilder::Throw() { |
| 568 Output(Bytecode::kThrow); |
| 569 exit_seen_in_block_ = true; |
| 570 return *this; |
| 571 } |
| 572 |
| 573 |
567 BytecodeArrayBuilder& BytecodeArrayBuilder::Return() { | 574 BytecodeArrayBuilder& BytecodeArrayBuilder::Return() { |
568 Output(Bytecode::kReturn); | 575 Output(Bytecode::kReturn); |
569 return_seen_in_block_ = true; | 576 exit_seen_in_block_ = true; |
570 return *this; | 577 return *this; |
571 } | 578 } |
572 | 579 |
573 | 580 |
574 BytecodeArrayBuilder& BytecodeArrayBuilder::EnterBlock() { return *this; } | 581 BytecodeArrayBuilder& BytecodeArrayBuilder::EnterBlock() { return *this; } |
575 | 582 |
576 | 583 |
577 BytecodeArrayBuilder& BytecodeArrayBuilder::LeaveBlock() { | 584 BytecodeArrayBuilder& BytecodeArrayBuilder::LeaveBlock() { |
578 last_block_end_ = bytecodes()->size(); | 585 last_block_end_ = bytecodes()->size(); |
579 return_seen_in_block_ = false; | 586 exit_seen_in_block_ = false; |
580 return *this; | 587 return *this; |
581 } | 588 } |
582 | 589 |
583 | 590 |
584 void BytecodeArrayBuilder::EnsureReturn() { | 591 void BytecodeArrayBuilder::EnsureReturn() { |
585 if (!return_seen_in_block_) { | 592 if (!exit_seen_in_block_) { |
586 LoadUndefined(); | 593 LoadUndefined(); |
587 Return(); | 594 Return(); |
588 } | 595 } |
589 } | 596 } |
590 | 597 |
591 BytecodeArrayBuilder& BytecodeArrayBuilder::Call(Register callable, | 598 BytecodeArrayBuilder& BytecodeArrayBuilder::Call(Register callable, |
592 Register receiver, | 599 Register receiver, |
593 size_t arg_count) { | 600 size_t arg_count) { |
594 if (FitsInIdx8Operand(arg_count)) { | 601 if (FitsInIdx8Operand(arg_count)) { |
595 Output(Bytecode::kCall, callable.ToOperand(), receiver.ToOperand(), | 602 Output(Bytecode::kCall, callable.ToOperand(), receiver.ToOperand(), |
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873 | 880 |
874 Register TemporaryRegisterScope::NewRegister() { | 881 Register TemporaryRegisterScope::NewRegister() { |
875 count_++; | 882 count_++; |
876 last_register_index_ = builder_->BorrowTemporaryRegister(); | 883 last_register_index_ = builder_->BorrowTemporaryRegister(); |
877 return Register(last_register_index_); | 884 return Register(last_register_index_); |
878 } | 885 } |
879 | 886 |
880 } // namespace interpreter | 887 } // namespace interpreter |
881 } // namespace internal | 888 } // namespace internal |
882 } // namespace v8 | 889 } // namespace v8 |
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