Remove some dead code.

src/x64/codegen-x64.h

Index: src/x64/codegen-x64.h
diff --git a/src/x64/codegen-x64.h b/src/x64/codegen-x64.h
index 9a70907cc83513281f635166973e180b93f43b46..94c785028909ff6ffcd0d226261d4dfca418656c 100644
--- a/src/x64/codegen-x64.h
+++ b/src/x64/codegen-x64.h
@@ -30,270 +30,17 @@
 
 #include "ast.h"
 #include "ic-inl.h"
-#include "jump-target-heavy.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations
 class CompilationInfo;
-class DeferredCode;
-class RegisterAllocator;
-class RegisterFile;
 
-enum InitState { CONST_INIT, NOT_CONST_INIT };
 enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };
 
 
 // -------------------------------------------------------------------------
-// Reference support
-
-// A reference is a C++ stack-allocated object that puts a
-// reference on the virtual frame.  The reference may be consumed
-// by GetValue, TakeValue, SetValue, and Codegen::UnloadReference.
-// When the lifetime (scope) of a valid reference ends, it must have
-// been consumed, and be in state UNLOADED.
-class Reference BASE_EMBEDDED {
- public:
-  // The values of the types is important, see size().
-  enum Type { UNLOADED = -2, ILLEGAL = -1, SLOT = 0, NAMED = 1, KEYED = 2 };
-
-  Reference(CodeGenerator* cgen,
-            Expression* expression,
-            bool persist_after_get = false);
-  ~Reference();
-
-  Expression* expression() const { return expression_; }
-  Type type() const { return type_; }
-  void set_type(Type value) {
-    ASSERT_EQ(ILLEGAL, type_);
-    type_ = value;
-  }
-
-  void set_unloaded() {
-    ASSERT_NE(ILLEGAL, type_);
-    ASSERT_NE(UNLOADED, type_);
-    type_ = UNLOADED;
-  }
-  // The size the reference takes up on the stack.
-  int size() const {
-    return (type_ < SLOT) ? 0 : type_;
-  }
-
-  bool is_illegal() const { return type_ == ILLEGAL; }
-  bool is_slot() const { return type_ == SLOT; }
-  bool is_property() const { return type_ == NAMED || type_ == KEYED; }
-  bool is_unloaded() const { return type_ == UNLOADED; }
-
-  // Return the name.  Only valid for named property references.
-  Handle<String> GetName();
-
-  // Generate code to push the value of the reference on top of the
-  // expression stack.  The reference is expected to be already on top of
-  // the expression stack, and it is consumed by the call unless the
-  // reference is for a compound assignment.
-  // If the reference is not consumed, it is left in place under its value.
-  void GetValue();
-
-  // Like GetValue except that the slot is expected to be written to before
-  // being read from again.  The value of the reference may be invalidated,
-  // causing subsequent attempts to read it to fail.
-  void TakeValue();
-
-  // Generate code to store the value on top of the expression stack in the
-  // reference.  The reference is expected to be immediately below the value
-  // on the expression stack.  The  value is stored in the location specified
-  // by the reference, and is left on top of the stack, after the reference
-  // is popped from beneath it (unloaded).
-  void SetValue(InitState init_state);
-
- private:
-  CodeGenerator* cgen_;
-  Expression* expression_;
-  Type type_;
-  bool persist_after_get_;
-};
-
-
-// -------------------------------------------------------------------------
-// Control destinations.
-
-// A control destination encapsulates a pair of jump targets and a
-// flag indicating which one is the preferred fall-through.  The
-// preferred fall-through must be unbound, the other may be already
-// bound (ie, a backward target).
-//
-// The true and false targets may be jumped to unconditionally or
-// control may split conditionally.  Unconditional jumping and
-// splitting should be emitted in tail position (as the last thing
-// when compiling an expression) because they can cause either label
-// to be bound or the non-fall through to be jumped to leaving an
-// invalid virtual frame.
-//
-// The labels in the control destination can be extracted and
-// manipulated normally without affecting the state of the
-// destination.
-
-class ControlDestination BASE_EMBEDDED {
- public:
-  ControlDestination(JumpTarget* true_target,
-                     JumpTarget* false_target,
-                     bool true_is_fall_through)
-      : true_target_(true_target),
-        false_target_(false_target),
-        true_is_fall_through_(true_is_fall_through),
-        is_used_(false) {
-    ASSERT(true_is_fall_through ? !true_target->is_bound()
-                                : !false_target->is_bound());
-  }
-
-  // Accessors for the jump targets.  Directly jumping or branching to
-  // or binding the targets will not update the destination's state.
-  JumpTarget* true_target() const { return true_target_; }
-  JumpTarget* false_target() const { return false_target_; }
-
-  // True if the the destination has been jumped to unconditionally or
-  // control has been split to both targets.  This predicate does not
-  // test whether the targets have been extracted and manipulated as
-  // raw jump targets.
-  bool is_used() const { return is_used_; }
-
-  // True if the destination is used and the true target (respectively
-  // false target) was the fall through.  If the target is backward,
-  // "fall through" included jumping unconditionally to it.
-  bool true_was_fall_through() const {
-    return is_used_ && true_is_fall_through_;
-  }
-
-  bool false_was_fall_through() const {
-    return is_used_ && !true_is_fall_through_;
-  }
-
-  // Emit a branch to one of the true or false targets, and bind the
-  // other target.  Because this binds the fall-through target, it
-  // should be emitted in tail position (as the last thing when
-  // compiling an expression).
-  void Split(Condition cc) {
-    ASSERT(!is_used_);
-    if (true_is_fall_through_) {
-      false_target_->Branch(NegateCondition(cc));
-      true_target_->Bind();
-    } else {
-      true_target_->Branch(cc);
-      false_target_->Bind();
-    }
-    is_used_ = true;
-  }
-
-  // Emit an unconditional jump in tail position, to the true target
-  // (if the argument is true) or the false target.  The "jump" will
-  // actually bind the jump target if it is forward, jump to it if it
-  // is backward.
-  void Goto(bool where) {
-    ASSERT(!is_used_);
-    JumpTarget* target = where ? true_target_ : false_target_;
-    if (target->is_bound()) {
-      target->Jump();
-    } else {
-      target->Bind();
-    }
-    is_used_ = true;
-    true_is_fall_through_ = where;
-  }
-
-  // Mark this jump target as used as if Goto had been called, but
-  // without generating a jump or binding a label (the control effect
-  // should have already happened).  This is used when the left
-  // subexpression of the short-circuit boolean operators are
-  // compiled.
-  void Use(bool where) {
-    ASSERT(!is_used_);
-    ASSERT((where ? true_target_ : false_target_)->is_bound());
-    is_used_ = true;
-    true_is_fall_through_ = where;
-  }
-
-  // Swap the true and false targets but keep the same actual label as
-  // the fall through.  This is used when compiling negated
-  // expressions, where we want to swap the targets but preserve the
-  // state.
-  void Invert() {
-    JumpTarget* temp_target = true_target_;
-    true_target_ = false_target_;
-    false_target_ = temp_target;
-
-    true_is_fall_through_ = !true_is_fall_through_;
-  }
-
- private:
-  // True and false jump targets.
-  JumpTarget* true_target_;
-  JumpTarget* false_target_;
-
-  // Before using the destination: true if the true target is the
-  // preferred fall through, false if the false target is.  After
-  // using the destination: true if the true target was actually used
-  // as the fall through, false if the false target was.
-  bool true_is_fall_through_;
-
-  // True if the Split or Goto functions have been called.
-  bool is_used_;
-};
-
-
-// -------------------------------------------------------------------------
-// Code generation state
-
-// The state is passed down the AST by the code generator (and back up, in
-// the form of the state of the jump target pair).  It is threaded through
-// the call stack.  Constructing a state implicitly pushes it on the owning
-// code generator's stack of states, and destroying one implicitly pops it.
-//
-// The code generator state is only used for expressions, so statements have
-// the initial state.
-
-class CodeGenState BASE_EMBEDDED {
- public:
-  // Create an initial code generator state.  Destroying the initial state
-  // leaves the code generator with a NULL state.
-  explicit CodeGenState(CodeGenerator* owner);
-
-  // Create a code generator state based on a code generator's current
-  // state.  The new state has its own control destination.
-  CodeGenState(CodeGenerator* owner, ControlDestination* destination);
-
-  // Destroy a code generator state and restore the owning code generator's
-  // previous state.
-  ~CodeGenState();
-
-  // Accessors for the state.
-  ControlDestination* destination() const { return destination_; }
-
- private:
-  // The owning code generator.
-  CodeGenerator* owner_;
-
-  // A control destination in case the expression has a control-flow
-  // effect.
-  ControlDestination* destination_;
-
-  // The previous state of the owning code generator, restored when
-  // this state is destroyed.
-  CodeGenState* previous_;
-};
-
-
-// -------------------------------------------------------------------------
-// Arguments allocation mode
-
-enum ArgumentsAllocationMode {
-  NO_ARGUMENTS_ALLOCATION,
-  EAGER_ARGUMENTS_ALLOCATION,
-  LAZY_ARGUMENTS_ALLOCATION
-};
-
-
-// -------------------------------------------------------------------------
 // CodeGenerator
 
 class CodeGenerator: public AstVisitor {
@@ -319,431 +66,7 @@ class CodeGenerator: public AstVisitor {
                               int pos,
                               bool right_here = false);
 
-  // Accessors
-  MacroAssembler* masm() { return masm_; }
-  VirtualFrame* frame() const { return frame_; }
-  inline Handle<Script> script();
-
-  bool has_valid_frame() const { return frame_ != NULL; }
-
-  // Set the virtual frame to be new_frame, with non-frame register
-  // reference counts given by non_frame_registers.  The non-frame
-  // register reference counts of the old frame are returned in
-  // non_frame_registers.
-  void SetFrame(VirtualFrame* new_frame, RegisterFile* non_frame_registers);
-
-  void DeleteFrame();
-
-  RegisterAllocator* allocator() const { return allocator_; }
-
-  CodeGenState* state() { return state_; }
-  void set_state(CodeGenState* state) { state_ = state; }
-
-  void AddDeferred(DeferredCode* code) { deferred_.Add(code); }
-
-  bool in_spilled_code() const { return in_spilled_code_; }
-  void set_in_spilled_code(bool flag) { in_spilled_code_ = flag; }
-
  private:
-  // Type of a member function that generates inline code for a native function.
-  typedef void (CodeGenerator::*InlineFunctionGenerator)
-      (ZoneList<Expression*>*);
-
-  static const InlineFunctionGenerator kInlineFunctionGenerators[];
-
-  // Construction/Destruction
-  explicit CodeGenerator(MacroAssembler* masm);
-
-  // Accessors
-  inline bool is_eval();
-  inline Scope* scope();
-  inline bool is_strict_mode();
-  inline StrictModeFlag strict_mode_flag();
-
-  // Generating deferred code.
-  void ProcessDeferred();
-
-  // State
-  ControlDestination* destination() const { return state_->destination(); }
-
-  // Track loop nesting level.
-  int loop_nesting() const { return loop_nesting_; }
-  void IncrementLoopNesting() { loop_nesting_++; }
-  void DecrementLoopNesting() { loop_nesting_--; }
-
-
-  // Node visitors.
-  void VisitStatements(ZoneList<Statement*>* statements);
-
-  virtual void VisitSlot(Slot* node);
-#define DEF_VISIT(type)                         \
-  virtual void Visit##type(type* node);
-  AST_NODE_LIST(DEF_VISIT)
-#undef DEF_VISIT
-
-  // Visit a statement and then spill the virtual frame if control flow can
-  // reach the end of the statement (ie, it does not exit via break,
-  // continue, return, or throw).  This function is used temporarily while
-  // the code generator is being transformed.
-  void VisitAndSpill(Statement* statement);
-
-  // Visit a list of statements and then spill the virtual frame if control
-  // flow can reach the end of the list.
-  void VisitStatementsAndSpill(ZoneList<Statement*>* statements);
-
-  // Main code generation function
-  void Generate(CompilationInfo* info);
-
-  // Generate the return sequence code.  Should be called no more than
-  // once per compiled function, immediately after binding the return
-  // target (which can not be done more than once).
-  void GenerateReturnSequence(Result* return_value);
-
-  // Generate code for a fast smi loop.
-  void GenerateFastSmiLoop(ForStatement* node);
-
-  // Returns the arguments allocation mode.
-  ArgumentsAllocationMode ArgumentsMode();
-
-  // Store the arguments object and allocate it if necessary.
-  Result StoreArgumentsObject(bool initial);
-
-  // The following are used by class Reference.
-  void LoadReference(Reference* ref);
-  void UnloadReference(Reference* ref);
-
-  Operand SlotOperand(Slot* slot, Register tmp);
-
-  Operand ContextSlotOperandCheckExtensions(Slot* slot,
-                                            Result tmp,
-                                            JumpTarget* slow);
-
-  // Expressions
-  void LoadCondition(Expression* x,
-                     ControlDestination* destination,
-                     bool force_control);
-  void Load(Expression* expr);
-  void LoadGlobal();
-  void LoadGlobalReceiver();
-
-  // Generate code to push the value of an expression on top of the frame
-  // and then spill the frame fully to memory.  This function is used
-  // temporarily while the code generator is being transformed.
-  void LoadAndSpill(Expression* expression);
-
-  // Read a value from a slot and leave it on top of the expression stack.
-  void LoadFromSlot(Slot* slot, TypeofState typeof_state);
-  void LoadFromSlotCheckForArguments(Slot* slot, TypeofState state);
-  Result LoadFromGlobalSlotCheckExtensions(Slot* slot,
-                                           TypeofState typeof_state,
-                                           JumpTarget* slow);
-
-  // Support for loading from local/global variables and arguments
-  // whose location is known unless they are shadowed by
-  // eval-introduced bindings. Generates no code for unsupported slot
-  // types and therefore expects to fall through to the slow jump target.
-  void EmitDynamicLoadFromSlotFastCase(Slot* slot,
-                                       TypeofState typeof_state,
-                                       Result* result,
-                                       JumpTarget* slow,
-                                       JumpTarget* done);
-
-  // Store the value on top of the expression stack into a slot, leaving the
-  // value in place.
-  void StoreToSlot(Slot* slot, InitState init_state);
-
-  // Support for compiling assignment expressions.
-  void EmitSlotAssignment(Assignment* node);
-  void EmitNamedPropertyAssignment(Assignment* node);
-  void EmitKeyedPropertyAssignment(Assignment* node);
-
-  // Receiver is passed on the frame and not consumed.
-  Result EmitNamedLoad(Handle<String> name, bool is_contextual);
-
-  // If the store is contextual, value is passed on the frame and consumed.
-  // Otherwise, receiver and value are passed on the frame and consumed.
-  Result EmitNamedStore(Handle<String> name, bool is_contextual);
-
-  // Load a property of an object, returning it in a Result.
-  // The object and the property name are passed on the stack, and
-  // not changed.
-  Result EmitKeyedLoad();
-
-  // Receiver, key, and value are passed on the frame and consumed.
-  Result EmitKeyedStore(StaticType* key_type);
-
-  // Special code for typeof expressions: Unfortunately, we must
-  // be careful when loading the expression in 'typeof'
-  // expressions. We are not allowed to throw reference errors for
-  // non-existing properties of the global object, so we must make it
-  // look like an explicit property access, instead of an access
-  // through the context chain.
-  void LoadTypeofExpression(Expression* x);
-
-  // Translate the value on top of the frame into control flow to the
-  // control destination.
-  void ToBoolean(ControlDestination* destination);
-
-  // Generate code that computes a shortcutting logical operation.
-  void GenerateLogicalBooleanOperation(BinaryOperation* node);
-
-  void GenericBinaryOperation(BinaryOperation* expr,
-                              OverwriteMode overwrite_mode);
-
-  // Generate a stub call from the virtual frame.
-  Result GenerateGenericBinaryOpStubCall(GenericBinaryOpStub* stub,
-                                         Result* left,
-                                         Result* right);
-
-  // Emits code sequence that jumps to a JumpTarget if the inputs
-  // are both smis.  Cannot be in MacroAssembler because it takes
-  // advantage of TypeInfo to skip unneeded checks.
-  void JumpIfBothSmiUsingTypeInfo(Result* left,
-                                  Result* right,
-                                  JumpTarget* both_smi);
-
-  // Emits code sequence that jumps to deferred code if the input
-  // is not a smi.  Cannot be in MacroAssembler because it takes
-  // advantage of TypeInfo to skip unneeded checks.
-  void JumpIfNotSmiUsingTypeInfo(Register reg,
-                                 TypeInfo type,
-                                 DeferredCode* deferred);
-
-  // Emits code sequence that jumps to deferred code if the inputs
-  // are not both smis.  Cannot be in MacroAssembler because it takes
-  // advantage of TypeInfo to skip unneeded checks.
-  void JumpIfNotBothSmiUsingTypeInfo(Register left,
-                                     Register right,
-                                     TypeInfo left_info,
-                                     TypeInfo right_info,
-                                     DeferredCode* deferred);
-
-  // If possible, combine two constant smi values using op to produce
-  // a smi result, and push it on the virtual frame, all at compile time.
-  // Returns true if it succeeds.  Otherwise it has no effect.
-  bool FoldConstantSmis(Token::Value op, int left, int right);
-
-  // Emit code to perform a binary operation on a constant
-  // smi and a likely smi.  Consumes the Result *operand.
-  Result ConstantSmiBinaryOperation(BinaryOperation* expr,
-                                    Result* operand,
-                                    Handle<Object> constant_operand,
-                                    bool reversed,
-                                    OverwriteMode overwrite_mode);
-
-  // Emit code to perform a binary operation on two likely smis.
-  // The code to handle smi arguments is produced inline.
-  // Consumes the Results *left and *right.
-  Result LikelySmiBinaryOperation(BinaryOperation* expr,
-                                  Result* left,
-                                  Result* right,
-                                  OverwriteMode overwrite_mode);
-
-  void Comparison(AstNode* node,
-                  Condition cc,
-                  bool strict,
-                  ControlDestination* destination);
-
-  // If at least one of the sides is a constant smi, generate optimized code.
-  void ConstantSmiComparison(Condition cc,
-                             bool strict,
-                             ControlDestination* destination,
-                             Result* left_side,
-                             Result* right_side,
-                             bool left_side_constant_smi,
-                             bool right_side_constant_smi,
-                             bool is_loop_condition);
-
-  void GenerateInlineNumberComparison(Result* left_side,
-                                      Result* right_side,
-                                      Condition cc,
-                                      ControlDestination* dest);
-
-  // To prevent long attacker-controlled byte sequences, integer constants
-  // from the JavaScript source are loaded in two parts if they are larger
-  // than 16 bits.
-  static const int kMaxSmiInlinedBits = 16;
-  bool IsUnsafeSmi(Handle<Object> value);
-  // Load an integer constant x into a register target using
-  // at most 16 bits of user-controlled data per assembly operation.
-  void LoadUnsafeSmi(Register target, Handle<Object> value);
-
-  void CallWithArguments(ZoneList<Expression*>* arguments,
-                         CallFunctionFlags flags,
-                         int position);
-
-  // An optimized implementation of expressions of the form
-  // x.apply(y, arguments).  We call x the applicand and y the receiver.
-  // The optimization avoids allocating an arguments object if possible.
-  void CallApplyLazy(Expression* applicand,
-                     Expression* receiver,
-                     VariableProxy* arguments,
-                     int position);
-
-  void CheckStack();
-
-  bool CheckForInlineRuntimeCall(CallRuntime* node);
-
-  void ProcessDeclarations(ZoneList<Declaration*>* declarations);
-
-  // Declare global variables and functions in the given array of
-  // name/value pairs.
-  void DeclareGlobals(Handle<FixedArray> pairs);
-
-  // Instantiate the function based on the shared function info.
-  void InstantiateFunction(Handle<SharedFunctionInfo> function_info,
-                           bool pretenure);
-
-  // Support for type checks.
-  void GenerateIsSmi(ZoneList<Expression*>* args);
-  void GenerateIsNonNegativeSmi(ZoneList<Expression*>* args);
-  void GenerateIsArray(ZoneList<Expression*>* args);
-  void GenerateIsRegExp(ZoneList<Expression*>* args);
-  void GenerateIsObject(ZoneList<Expression*>* args);
-  void GenerateIsSpecObject(ZoneList<Expression*>* args);
-  void GenerateIsFunction(ZoneList<Expression*>* args);
-  void GenerateIsUndetectableObject(ZoneList<Expression*>* args);
-  void GenerateIsStringWrapperSafeForDefaultValueOf(
-      ZoneList<Expression*>* args);
-
-  // Support for construct call checks.
-  void GenerateIsConstructCall(ZoneList<Expression*>* args);
-
-  // Support for arguments.length and arguments[?].
-  void GenerateArgumentsLength(ZoneList<Expression*>* args);
-  void GenerateArguments(ZoneList<Expression*>* args);
-
-  // Support for accessing the class and value fields of an object.
-  void GenerateClassOf(ZoneList<Expression*>* args);
-  void GenerateValueOf(ZoneList<Expression*>* args);
-  void GenerateSetValueOf(ZoneList<Expression*>* args);
-
-  // Fast support for charCodeAt(n).
-  void GenerateStringCharCodeAt(ZoneList<Expression*>* args);
-
-  // Fast support for string.charAt(n) and string[n].
-  void GenerateStringCharFromCode(ZoneList<Expression*>* args);
-
-  // Fast support for string.charAt(n) and string[n].
-  void GenerateStringCharAt(ZoneList<Expression*>* args);
-
-  // Fast support for object equality testing.
-  void GenerateObjectEquals(ZoneList<Expression*>* args);
-
-  void GenerateLog(ZoneList<Expression*>* args);
-
-  void GenerateGetFramePointer(ZoneList<Expression*>* args);
-
-  // Fast support for Math.random().
-  void GenerateRandomHeapNumber(ZoneList<Expression*>* args);
-
-  // Fast support for StringAdd.
-  void GenerateStringAdd(ZoneList<Expression*>* args);
-
-  // Fast support for SubString.
-  void GenerateSubString(ZoneList<Expression*>* args);
-
-  // Fast support for StringCompare.
-  void GenerateStringCompare(ZoneList<Expression*>* args);
-
-  // Support for direct calls from JavaScript to native RegExp code.
-  void GenerateRegExpExec(ZoneList<Expression*>* args);
-
-  void GenerateRegExpConstructResult(ZoneList<Expression*>* args);
-
-  // Support for fast native caches.
-  void GenerateGetFromCache(ZoneList<Expression*>* args);
-
-  // Fast support for number to string.
-  void GenerateNumberToString(ZoneList<Expression*>* args);
-
-  // Fast swapping of elements. Takes three expressions, the object and two
-  // indices. This should only be used if the indices are known to be
-  // non-negative and within bounds of the elements array at the call site.
-  void GenerateSwapElements(ZoneList<Expression*>* args);
-
-  // Fast call for custom callbacks.
-  void GenerateCallFunction(ZoneList<Expression*>* args);
-
-  // Fast call to math functions.
-  void GenerateMathPow(ZoneList<Expression*>* args);
-  void GenerateMathSin(ZoneList<Expression*>* args);
-  void GenerateMathCos(ZoneList<Expression*>* args);
-  void GenerateMathSqrt(ZoneList<Expression*>* args);
-  void GenerateMathLog(ZoneList<Expression*>* args);
-
-  // Check whether two RegExps are equivalent.
-  void GenerateIsRegExpEquivalent(ZoneList<Expression*>* args);
-
-  void GenerateHasCachedArrayIndex(ZoneList<Expression*>* args);
-  void GenerateGetCachedArrayIndex(ZoneList<Expression*>* args);
-  void GenerateFastAsciiArrayJoin(ZoneList<Expression*>* args);
-
-  // Simple condition analysis.
-  enum ConditionAnalysis {
-    ALWAYS_TRUE,
-    ALWAYS_FALSE,
-    DONT_KNOW
-  };
-  ConditionAnalysis AnalyzeCondition(Expression* cond);
-
-  // Methods used to indicate which source code is generated for. Source
-  // positions are collected by the assembler and emitted with the relocation
-  // information.
-  void CodeForFunctionPosition(FunctionLiteral* fun);
-  void CodeForReturnPosition(FunctionLiteral* fun);
-  void CodeForStatementPosition(Statement* node);
-  void CodeForDoWhileConditionPosition(DoWhileStatement* stmt);
-  void CodeForSourcePosition(int pos);
-
-  void SetTypeForStackSlot(Slot* slot, TypeInfo info);
-
-#ifdef DEBUG
-  // True if the registers are valid for entry to a block.  There should
-  // be no frame-external references to (non-reserved) registers.
-  bool HasValidEntryRegisters();
-#endif
-
-  ZoneList<DeferredCode*> deferred_;
-
-  // Assembler
-  MacroAssembler* masm_;  // to generate code
-
-  CompilationInfo* info_;
-
-  // Code generation state
-  VirtualFrame* frame_;
-  RegisterAllocator* allocator_;
-  CodeGenState* state_;
-  int loop_nesting_;
-
-  // Jump targets.
-  // The target of the return from the function.
-  BreakTarget function_return_;
-
-  // True if the function return is shadowed (ie, jumping to the target
-  // function_return_ does not jump to the true function return, but rather
-  // to some unlinking code).
-  bool function_return_is_shadowed_;
-
-  // True when we are in code that expects the virtual frame to be fully
-  // spilled.  Some virtual frame function are disabled in DEBUG builds when
-  // called from spilled code, because they do not leave the virtual frame
-  // in a spilled state.
-  bool in_spilled_code_;
-
-  friend class VirtualFrame;
-  friend class Isolate;
-  friend class JumpTarget;
-  friend class Reference;
-  friend class Result;
-  friend class FastCodeGenerator;
-  friend class FullCodeGenerator;
-  friend class FullCodeGenSyntaxChecker;
-
-  friend class CodeGeneratorPatcher;  // Used in test-log-stack-tracer.cc
-  friend class InlineRuntimeFunctionsTable;
-
   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
 };