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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/address-map.h" | 7 #include "src/address-map.h" |
| 8 #include "src/compiler/code-generator-impl.h" | 8 #include "src/compiler/code-generator-impl.h" |
| 9 #include "src/compiler/linkage.h" | 9 #include "src/compiler/linkage.h" |
| 10 #include "src/compiler/pipeline.h" | 10 #include "src/compiler/pipeline.h" |
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| 80 } | 80 } |
| 81 // Architecture-specific, linkage-specific prologue. | 81 // Architecture-specific, linkage-specific prologue. |
| 82 info->set_prologue_offset(masm()->pc_offset()); | 82 info->set_prologue_offset(masm()->pc_offset()); |
| 83 AssemblePrologue(); | 83 AssemblePrologue(); |
| 84 if (linkage()->GetIncomingDescriptor()->InitializeRootRegister()) { | 84 if (linkage()->GetIncomingDescriptor()->InitializeRootRegister()) { |
| 85 masm()->InitializeRootRegister(); | 85 masm()->InitializeRootRegister(); |
| 86 } | 86 } |
| 87 | 87 |
| 88 // Define deoptimization literals for all inlined functions. | 88 // Define deoptimization literals for all inlined functions. |
| 89 DCHECK_EQ(0u, deoptimization_literals_.size()); | 89 DCHECK_EQ(0u, deoptimization_literals_.size()); |
| 90 for (auto& inlined : info->inlined_functions()) { | 90 for (const CompilationInfo::InlinedFunctionHolder& inlined : |
| 91 info->inlined_functions()) { |
| 91 if (!inlined.shared_info.is_identical_to(info->shared_info())) { | 92 if (!inlined.shared_info.is_identical_to(info->shared_info())) { |
| 92 DefineDeoptimizationLiteral(inlined.shared_info); | 93 DefineDeoptimizationLiteral(inlined.shared_info); |
| 93 } | 94 } |
| 94 } | 95 } |
| 95 inlined_function_count_ = deoptimization_literals_.size(); | 96 inlined_function_count_ = deoptimization_literals_.size(); |
| 96 | 97 |
| 97 // Define deoptimization literals for all unoptimized code objects of inlined | 98 // Define deoptimization literals for all unoptimized code objects of inlined |
| 98 // functions. This ensures unoptimized code is kept alive by optimized code. | 99 // functions. This ensures unoptimized code is kept alive by optimized code. |
| 99 for (auto& inlined : info->inlined_functions()) { | 100 for (const CompilationInfo::InlinedFunctionHolder& inlined : |
| 101 info->inlined_functions()) { |
| 100 if (!inlined.shared_info.is_identical_to(info->shared_info())) { | 102 if (!inlined.shared_info.is_identical_to(info->shared_info())) { |
| 101 DefineDeoptimizationLiteral(inlined.inlined_code_object_root); | 103 DefineDeoptimizationLiteral(inlined.inlined_code_object_root); |
| 102 } | 104 } |
| 103 } | 105 } |
| 104 | 106 |
| 105 // Assemble all non-deferred blocks, followed by deferred ones. | 107 // Assemble all non-deferred blocks, followed by deferred ones. |
| 106 for (int deferred = 0; deferred < 2; ++deferred) { | 108 for (int deferred = 0; deferred < 2; ++deferred) { |
| 107 for (auto const block : code()->instruction_blocks()) { | 109 for (const InstructionBlock* block : code()->instruction_blocks()) { |
| 108 if (block->IsDeferred() == (deferred == 0)) { | 110 if (block->IsDeferred() == (deferred == 0)) { |
| 109 continue; | 111 continue; |
| 110 } | 112 } |
| 111 // Align loop headers on 16-byte boundaries. | 113 // Align loop headers on 16-byte boundaries. |
| 112 if (block->IsLoopHeader()) masm()->Align(16); | 114 if (block->IsLoopHeader()) masm()->Align(16); |
| 113 // Ensure lazy deopt doesn't patch handler entry points. | 115 // Ensure lazy deopt doesn't patch handler entry points. |
| 114 if (block->IsHandler()) EnsureSpaceForLazyDeopt(); | 116 if (block->IsHandler()) EnsureSpaceForLazyDeopt(); |
| 115 // Bind a label for a block. | 117 // Bind a label for a block. |
| 116 current_block_ = block->rpo_number(); | 118 current_block_ = block->rpo_number(); |
| 117 if (FLAG_code_comments) { | 119 if (FLAG_code_comments) { |
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| 231 } | 233 } |
| 232 | 234 |
| 233 | 235 |
| 234 void CodeGenerator::RecordSafepoint(ReferenceMap* references, | 236 void CodeGenerator::RecordSafepoint(ReferenceMap* references, |
| 235 Safepoint::Kind kind, int arguments, | 237 Safepoint::Kind kind, int arguments, |
| 236 Safepoint::DeoptMode deopt_mode) { | 238 Safepoint::DeoptMode deopt_mode) { |
| 237 Safepoint safepoint = | 239 Safepoint safepoint = |
| 238 safepoints()->DefineSafepoint(masm(), kind, arguments, deopt_mode); | 240 safepoints()->DefineSafepoint(masm(), kind, arguments, deopt_mode); |
| 239 int stackSlotToSpillSlotDelta = | 241 int stackSlotToSpillSlotDelta = |
| 240 frame()->GetTotalFrameSlotCount() - frame()->GetSpillSlotCount(); | 242 frame()->GetTotalFrameSlotCount() - frame()->GetSpillSlotCount(); |
| 241 for (auto& operand : references->reference_operands()) { | 243 for (const InstructionOperand& operand : references->reference_operands()) { |
| 242 if (operand.IsStackSlot()) { | 244 if (operand.IsStackSlot()) { |
| 243 int index = LocationOperand::cast(operand).index(); | 245 int index = LocationOperand::cast(operand).index(); |
| 244 DCHECK(index >= 0); | 246 DCHECK(index >= 0); |
| 245 // We might index values in the fixed part of the frame (i.e. the | 247 // We might index values in the fixed part of the frame (i.e. the |
| 246 // closure pointer or the context pointer); these are not spill slots | 248 // closure pointer or the context pointer); these are not spill slots |
| 247 // and therefore don't work with the SafepointTable currently, but | 249 // and therefore don't work with the SafepointTable currently, but |
| 248 // we also don't need to worry about them, since the GC has special | 250 // we also don't need to worry about them, since the GC has special |
| 249 // knowledge about those fields anyway. | 251 // knowledge about those fields anyway. |
| 250 if (index < stackSlotToSpillSlotDelta) continue; | 252 if (index < stackSlotToSpillSlotDelta) continue; |
| 251 safepoint.DefinePointerSlot(index, zone()); | 253 safepoint.DefinePointerSlot(index, zone()); |
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| 773 : frame_(gen->frame()), masm_(gen->masm()), next_(gen->ools_) { | 775 : frame_(gen->frame()), masm_(gen->masm()), next_(gen->ools_) { |
| 774 gen->ools_ = this; | 776 gen->ools_ = this; |
| 775 } | 777 } |
| 776 | 778 |
| 777 | 779 |
| 778 OutOfLineCode::~OutOfLineCode() {} | 780 OutOfLineCode::~OutOfLineCode() {} |
| 779 | 781 |
| 780 } // namespace compiler | 782 } // namespace compiler |
| 781 } // namespace internal | 783 } // namespace internal |
| 782 } // namespace v8 | 784 } // namespace v8 |
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