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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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/compiler/code-generator.h" | 5 #include "src/compiler/code-generator.h" |
| 6 | 6 |
| 7 #include "src/compilation-info.h" | 7 #include "src/compilation-info.h" |
| 8 #include "src/compiler/code-generator-impl.h" | 8 #include "src/compiler/code-generator-impl.h" |
| 9 #include "src/compiler/gap-resolver.h" | 9 #include "src/compiler/gap-resolver.h" |
| 10 #include "src/compiler/node-matchers.h" | 10 #include "src/compiler/node-matchers.h" |
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| 629 case kArchDebugBreak: | 629 case kArchDebugBreak: |
| 630 __ int3(); | 630 __ int3(); |
| 631 break; | 631 break; |
| 632 case kArchNop: | 632 case kArchNop: |
| 633 case kArchThrowTerminator: | 633 case kArchThrowTerminator: |
| 634 // don't emit code for nops. | 634 // don't emit code for nops. |
| 635 break; | 635 break; |
| 636 case kArchDeoptimize: { | 636 case kArchDeoptimize: { |
| 637 int deopt_state_id = | 637 int deopt_state_id = |
| 638 BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore()); | 638 BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore()); |
| 639 Deoptimizer::BailoutType bailout_type = | 639 CodeGenResult result = |
| 640 Deoptimizer::BailoutType(MiscField::decode(instr->opcode())); | 640 AssembleDeoptimizerCall(deopt_state_id, current_source_position_); |
| 641 CodeGenResult result = AssembleDeoptimizerCall( | |
| 642 deopt_state_id, bailout_type, current_source_position_); | |
| 643 if (result != kSuccess) return result; | 641 if (result != kSuccess) return result; |
| 644 break; | 642 break; |
| 645 } | 643 } |
| 646 case kArchRet: | 644 case kArchRet: |
| 647 AssembleReturn(instr->InputAt(0)); | 645 AssembleReturn(instr->InputAt(0)); |
| 648 break; | 646 break; |
| 649 case kArchStackPointer: | 647 case kArchStackPointer: |
| 650 __ mov(i.OutputRegister(), esp); | 648 __ mov(i.OutputRegister(), esp); |
| 651 break; | 649 break; |
| 652 case kArchFramePointer: | 650 case kArchFramePointer: |
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| 1800 for (size_t index = 0; index < case_count; ++index) { | 1798 for (size_t index = 0; index < case_count; ++index) { |
| 1801 cases[index] = GetLabel(i.InputRpo(index + 2)); | 1799 cases[index] = GetLabel(i.InputRpo(index + 2)); |
| 1802 } | 1800 } |
| 1803 Label* const table = AddJumpTable(cases, case_count); | 1801 Label* const table = AddJumpTable(cases, case_count); |
| 1804 __ cmp(input, Immediate(case_count)); | 1802 __ cmp(input, Immediate(case_count)); |
| 1805 __ j(above_equal, GetLabel(i.InputRpo(1))); | 1803 __ j(above_equal, GetLabel(i.InputRpo(1))); |
| 1806 __ jmp(Operand::JumpTable(input, times_4, table)); | 1804 __ jmp(Operand::JumpTable(input, times_4, table)); |
| 1807 } | 1805 } |
| 1808 | 1806 |
| 1809 CodeGenerator::CodeGenResult CodeGenerator::AssembleDeoptimizerCall( | 1807 CodeGenerator::CodeGenResult CodeGenerator::AssembleDeoptimizerCall( |
| 1810 int deoptimization_id, Deoptimizer::BailoutType bailout_type, | 1808 int deoptimization_id, SourcePosition pos) { |
| 1811 SourcePosition pos) { | 1809 DeoptimizeKind deoptimization_kind = GetDeoptimizationKind(deoptimization_id); |
| 1810 DeoptimizeReason deoptimization_reason = |
| 1811 GetDeoptimizationReason(deoptimization_id); |
| 1812 Deoptimizer::BailoutType bailout_type = |
| 1813 deoptimization_kind == DeoptimizeKind::kSoft ? Deoptimizer::SOFT |
| 1814 : Deoptimizer::EAGER; |
| 1812 Address deopt_entry = Deoptimizer::GetDeoptimizationEntry( | 1815 Address deopt_entry = Deoptimizer::GetDeoptimizationEntry( |
| 1813 isolate(), deoptimization_id, bailout_type); | 1816 isolate(), deoptimization_id, bailout_type); |
| 1814 if (deopt_entry == nullptr) return kTooManyDeoptimizationBailouts; | 1817 if (deopt_entry == nullptr) return kTooManyDeoptimizationBailouts; |
| 1815 DeoptimizeReason deoptimization_reason = | |
| 1816 GetDeoptimizationReason(deoptimization_id); | |
| 1817 __ RecordDeoptReason(deoptimization_reason, pos, deoptimization_id); | 1818 __ RecordDeoptReason(deoptimization_reason, pos, deoptimization_id); |
| 1818 __ call(deopt_entry, RelocInfo::RUNTIME_ENTRY); | 1819 __ call(deopt_entry, RelocInfo::RUNTIME_ENTRY); |
| 1819 return kSuccess; | 1820 return kSuccess; |
| 1820 } | 1821 } |
| 1821 | 1822 |
| 1822 | 1823 |
| 1823 // The calling convention for JSFunctions on IA32 passes arguments on the | 1824 // The calling convention for JSFunctions on IA32 passes arguments on the |
| 1824 // stack and the JSFunction and context in EDI and ESI, respectively, thus | 1825 // stack and the JSFunction and context in EDI and ESI, respectively, thus |
| 1825 // the steps of the call look as follows: | 1826 // the steps of the call look as follows: |
| 1826 | 1827 |
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| 2301 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; | 2302 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 2302 __ Nop(padding_size); | 2303 __ Nop(padding_size); |
| 2303 } | 2304 } |
| 2304 } | 2305 } |
| 2305 | 2306 |
| 2306 #undef __ | 2307 #undef __ |
| 2307 | 2308 |
| 2308 } // namespace compiler | 2309 } // namespace compiler |
| 2309 } // namespace internal | 2310 } // namespace internal |
| 2310 } // namespace v8 | 2311 } // namespace v8 |
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