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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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| 1674 | 1674 |
| 1675 void CodeGenerator::AssemblePrologue() { | 1675 void CodeGenerator::AssemblePrologue() { |
| 1676 CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); | 1676 CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
| 1677 if (descriptor->IsCFunctionCall()) { | 1677 if (descriptor->IsCFunctionCall()) { |
| 1678 // Assemble a prologue similar the to cdecl calling convention. | 1678 // Assemble a prologue similar the to cdecl calling convention. |
| 1679 __ push(ebp); | 1679 __ push(ebp); |
| 1680 __ mov(ebp, esp); | 1680 __ mov(ebp, esp); |
| 1681 } else if (descriptor->IsJSFunctionCall()) { | 1681 } else if (descriptor->IsJSFunctionCall()) { |
| 1682 // TODO(turbofan): this prologue is redundant with OSR, but needed for | 1682 // TODO(turbofan): this prologue is redundant with OSR, but needed for |
| 1683 // code aging. | 1683 // code aging. |
| 1684 CompilationInfo* info = this->info(); | 1684 __ Prologue(this->info()->GeneratePreagedPrologue()); |
| 1685 __ Prologue(info->IsCodePreAgingActive()); | |
| 1686 } else if (frame()->needs_frame()) { | 1685 } else if (frame()->needs_frame()) { |
| 1687 __ StubPrologue(); | 1686 __ StubPrologue(); |
| 1688 } else { | 1687 } else { |
| 1689 frame()->SetElidedFrameSizeInSlots(kPCOnStackSize / kPointerSize); | 1688 frame()->SetElidedFrameSizeInSlots(kPCOnStackSize / kPointerSize); |
| 1690 } | 1689 } |
| 1691 frame_access_state()->SetFrameAccessToDefault(); | 1690 frame_access_state()->SetFrameAccessToDefault(); |
| 1692 | 1691 |
| 1693 int stack_shrink_slots = frame()->GetSpillSlotCount(); | 1692 int stack_shrink_slots = frame()->GetSpillSlotCount(); |
| 1694 if (info()->is_osr()) { | 1693 if (info()->is_osr()) { |
| 1695 // TurboFan OSR-compiled functions cannot be entered directly. | 1694 // TurboFan OSR-compiled functions cannot be entered directly. |
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| 1998 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; | 1997 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 1999 __ Nop(padding_size); | 1998 __ Nop(padding_size); |
| 2000 } | 1999 } |
| 2001 } | 2000 } |
| 2002 | 2001 |
| 2003 #undef __ | 2002 #undef __ |
| 2004 | 2003 |
| 2005 } // namespace compiler | 2004 } // namespace compiler |
| 2006 } // namespace internal | 2005 } // namespace internal |
| 2007 } // namespace v8 | 2006 } // namespace v8 |
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