Experimental: this is a substantial change to allow the virtual frame...

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 49 matching lines @@
   JumpTarget();
 
   virtual ~JumpTarget() { delete expected_frame_; }
 
   // Supply a code generator.  This function expects to be given a non-null
   // code generator, and to be called only when the code generator is not
   // yet set.
   void set_code_generator(CodeGenerator* cgen);
 
   // Accessors.
-  CodeGenerator* code_generator() const { return code_generator_; }
+  CodeGenerator* code_generator() const { return cgen_; }
 
   Label* label() { return &label_; }
 
   VirtualFrame* expected_frame() const { return expected_frame_; }
   void set_expected_frame(VirtualFrame* frame) {
     expected_frame_ = frame;
   }
 
   // Predicates testing the state of the encapsulated label.
   bool is_bound() const { return label_.is_bound(); }
   bool is_linked() const { return label_.is_linked(); }
   bool is_unused() const { return label_.is_unused(); }
 
   // Treat the jump target as a fresh one---the label is unused and the
   // expected frame if any is reset.
   void Unuse() {
     label_.Unuse();
     delete expected_frame_;
     expected_frame_ = NULL;
   }
 
   // Emit a jump to the target.  There must be a current frame before the
   // jump and there will be no current frame after the jump.
   void Jump();
 
   // Emit a conditional branch to the target.  If there is no current frame,
   // there must be one expected at the target.
   void Branch(Condition cc, Hint hint = no_hint);
+  void Branch(Condition cc, Result* arg, Hint hint = no_hint);
 
   // Bind a jump target.  There must be a current frame and no expected
   // frame at the target (targets are only bound once).
   void Bind();
+  void Bind(Result* arg);
 
   // Emit a call to a jump target.  There must be a current frame.  The
   // frame at the target is the same as the current frame except for an
   // extra return address on top of it.
   void Call();
 
  protected:
   // The encapsulated assembler label.
   Label label_;
 
   // The expected frame where the label is bound, or NULL.
   VirtualFrame* expected_frame_;
 
  private:
   // The code generator gives access to the current frame.
-  CodeGenerator* code_generator_;
+  CodeGenerator* cgen_;
 
   // Used to emit code.
   MacroAssembler* masm_;
 };
 
 
 // -------------------------------------------------------------------------
 // Shadow jump targets
 //
 // Shadow jump targets represent a jump target that is temporarily shadowed
@@ skipping 37 matching lines @@
 
 #ifdef DEBUG
   bool is_shadowing_;
 #endif
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_JUMP_TARGET_H_