Initial bypass of JumpTarget::ComputeEntryFrame for deferred code...

src/jump-target.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 143 matching lines @@
             int mergable_elements = kAllElements);
 
   // Emit a call to a jump target.  There must be a current frame at
   // the call.  The frame at the target is the same as the current
   // frame except for an extra return address on top of it.  The frame
   // after the call is the same as the frame before the call.
   void Call();
 
   static const int kAllElements = -1;  // Not a valid number of elements.
 
+  static void set_compiling_deferred_code(bool flag) {
+    compiling_deferred_code_ = flag;
+  }
+
  protected:
   // The code generator gives access to its current frame.
   CodeGenerator* cgen_;
 
   // Used to emit code.
   MacroAssembler* masm_;
 
   // Directionality flag set at initialization time.
   Directionality direction_;
 
@@ skipping 17 matching lines @@
   bool is_bound_;
   bool is_linked_;
 
   // Implementations of Jump, Branch, and Bind with all arguments and
   // return values using the virtual frame.
   void DoJump();
   void DoBranch(Condition cc, Hint hint);
   void DoBind(int mergable_elements);
 
  private:
-  // Add a virtual frame reaching this labeled block via a forward
-  // jump, and a fresh label for its merge code.
+  static bool compiling_deferred_code_;
+
+  // Add a virtual frame reaching this labeled block via a forward jump,
+  // and a corresponding merge code label.
   void AddReachingFrame(VirtualFrame* frame);
 
-  // Compute a frame to use for entry to this block.  Mergable
-  // elements is as described for the Bind function.
+  // Compute a frame to use for entry to this block.  Mergable elements
+  // is as described for the Bind function.
   void ComputeEntryFrame(int mergable_elements);
 
   DISALLOW_COPY_AND_ASSIGN(JumpTarget);
 };
 
 
 // -------------------------------------------------------------------------
 // Break targets
 //
 // A break target is a jump target that can be used to break out of a
@@ skipping 95 matching lines @@
   bool is_shadowing_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ShadowTarget);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_JUMP_TARGET_H_