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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/ast/scopes.h" | 7 #include "src/ast/scopes.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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| 1413 // ^ esp ^ ebp | 1413 // ^ esp ^ ebp |
| 1414 | 1414 |
| 1415 | 1415 |
| 1416 void CodeGenerator::AssemblePrologue() { | 1416 void CodeGenerator::AssemblePrologue() { |
| 1417 CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); | 1417 CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
| 1418 if (descriptor->IsCFunctionCall()) { | 1418 if (descriptor->IsCFunctionCall()) { |
| 1419 // Assemble a prologue similar the to cdecl calling convention. | 1419 // Assemble a prologue similar the to cdecl calling convention. |
| 1420 __ push(ebp); | 1420 __ push(ebp); |
| 1421 __ mov(ebp, esp); | 1421 __ mov(ebp, esp); |
| 1422 } else if (descriptor->IsJSFunctionCall()) { | 1422 } else if (descriptor->IsJSFunctionCall()) { |
| 1423 // TODO(turbofan): this prologue is redundant with OSR, but needed for | 1423 // TODO(turbofan): this prologue is redundant with OSR, but still needed for |
| 1424 // code aging. | 1424 // code aging. |
| 1425 CompilationInfo* info = this->info(); | 1425 __ Prologue(this->info()->GeneratePreagedPrologue()); |
| 1426 __ Prologue(info->IsCodePreAgingActive()); | |
| 1427 } else if (frame()->needs_frame()) { | 1426 } else if (frame()->needs_frame()) { |
| 1428 __ StubPrologue(); | 1427 __ StubPrologue(); |
| 1429 } else { | 1428 } else { |
| 1430 frame()->SetElidedFrameSizeInSlots(kPCOnStackSize / kPointerSize); | 1429 frame()->SetElidedFrameSizeInSlots(kPCOnStackSize / kPointerSize); |
| 1431 } | 1430 } |
| 1432 frame_access_state()->SetFrameAccessToDefault(); | 1431 frame_access_state()->SetFrameAccessToDefault(); |
| 1433 | 1432 |
| 1434 int stack_shrink_slots = frame()->GetSpillSlotCount(); | 1433 int stack_shrink_slots = frame()->GetSpillSlotCount(); |
| 1435 if (info()->is_osr()) { | 1434 if (info()->is_osr()) { |
| 1436 // TurboFan OSR-compiled functions cannot be entered directly. | 1435 // TurboFan OSR-compiled functions cannot be entered directly. |
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| 1689 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; | 1688 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 1690 __ Nop(padding_size); | 1689 __ Nop(padding_size); |
| 1691 } | 1690 } |
| 1692 } | 1691 } |
| 1693 | 1692 |
| 1694 #undef __ | 1693 #undef __ |
| 1695 | 1694 |
| 1696 } // namespace compiler | 1695 } // namespace compiler |
| 1697 } // namespace internal | 1696 } // namespace internal |
| 1698 } // namespace v8 | 1697 } // namespace v8 |
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