[turbofan] Frame elision for code stubs

src/compiler/instruction-selector.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/instruction-selector.h"
 
 #include <limits>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
@@ skipping 1168 matching lines @@
 
 
 void InstructionSelector::VisitLoadStackPointer(Node* node) {
   OperandGenerator g(this);
   Emit(kArchStackPointer, g.DefineAsRegister(node));
 }
 
 
 void InstructionSelector::VisitLoadFramePointer(Node* node) {
   OperandGenerator g(this);
-  frame_->MarkNeedsFrame();
   Emit(kArchFramePointer, g.DefineAsRegister(node));
 }
 
 void InstructionSelector::VisitLoadParentFramePointer(Node* node) {
   OperandGenerator g(this);
   Emit(kArchParentFramePointer, g.DefineAsRegister(node));
 }
 
 void InstructionSelector::EmitTableSwitch(const SwitchInfo& sw,
                                           InstructionOperand& index_operand) {
@@ skipping 587 matching lines @@
   return new (instruction_zone()) FrameStateDescriptor(
       instruction_zone(), state_info.type(), state_info.bailout_id(),
       state_info.state_combine(), parameters, locals, stack,
       state_info.shared_info(), outer_state);
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8