[turbofan] Frame elision for code stubs

src/compiler/code-generator.h

 // 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.
 
 #ifndef V8_COMPILER_CODE_GENERATOR_H_
 #define V8_COMPILER_CODE_GENERATOR_H_
 
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/instruction.h"
 #include "src/deoptimizer.h"
@@ skipping 88 matching lines @@
   void AssembleArchBoolean(Instruction* instr, FlagsCondition condition);
   void AssembleArchLookupSwitch(Instruction* instr);
   void AssembleArchTableSwitch(Instruction* instr);
 
   void AssembleDeoptimizerCall(int deoptimization_id,
                                Deoptimizer::BailoutType bailout_type);
 
   // Generates an architecture-specific, descriptor-specific prologue
   // to set up a stack frame.
   void AssemblePrologue();
+
+  void AssembleSetupStackPointer();

[Benedikt Meurer, 2016/03/30 04:00:25]

Nit: Add comment to explain what this is supposed to do.

+
   // Generates an architecture-specific, descriptor-specific return sequence
   // to tear down a stack frame.
   void AssembleReturn();
 
   // Generates code to deconstruct a the caller's frame, including arguments.
   void AssembleDeconstructActivationRecord(int stack_param_delta);
 
+  void AssembleDeconstructFrame();

[Benedikt Meurer, 2016/03/30 04:00:25]

Nit: Add comment to explain what this is supposed to do.

+
   // Generates code to manipulate the stack in preparation for a tail call.
   void AssemblePrepareTailCall(int stack_param_delta);
 
   // Generates code to pop current frame if it is an arguments adaptor frame.
   void AssemblePopArgumentsAdaptorFrame(Register args_reg, Register scratch1,
                                         Register scratch2, Register scratch3);
 
   // ===========================================================================
   // ============== Architecture-specific gap resolver methods. ================
   // ===========================================================================
@@ skipping 101 matching lines @@
   JumpTable* jump_tables_;
   OutOfLineCode* ools_;
   int osr_pc_offset_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_GENERATOR_H