Inline the code dealing with entering spilled scopes and maintaining a...

src/x64/codegen-x64.h

Index: src/x64/codegen-x64.h
===================================================================
--- src/x64/codegen-x64.h	(revision 1913)
+++ src/x64/codegen-x64.h	(working copy)
@@ -321,8 +321,10 @@
 
   void AddDeferred(DeferredCode* code) { deferred_.Add(code); }
 
+#ifdef DEBUG
   bool in_spilled_code() const { return in_spilled_code_; }
   void set_in_spilled_code(bool flag) { in_spilled_code_ = flag; }
+#endif
 
  private:
   // Construction/Destruction
@@ -360,11 +362,11 @@
   // 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);
+  inline 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);
+  inline void VisitStatementsAndSpill(ZoneList<Statement*>* statements);
 
   // Main code generation function
   void GenCode(FunctionLiteral* fun);
@@ -404,8 +406,8 @@
   // 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,
-                    TypeofState typeof_state = NOT_INSIDE_TYPEOF);
+  inline void LoadAndSpill(Expression* expression,
+                           TypeofState typeof_state = NOT_INSIDE_TYPEOF);
 
   // Read a value from a slot and leave it on top of the expression stack.
   void LoadFromSlot(Slot* slot, TypeofState typeof_state);
@@ -606,11 +608,13 @@
   // to some unlinking code).
   bool function_return_is_shadowed_;
 
+#ifdef DEBUG
   // 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_;
+#endif
 
   static InlineRuntimeLUT kInlineRuntimeLUT[];