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

src/codegen.h

Index: src/codegen.h
===================================================================
--- src/codegen.h	(revision 1936)
+++ src/codegen.h	(working copy)
@@ -117,7 +117,14 @@
   MacroAssembler* masm() const { return masm_; }
   CodeGenerator* generator() const { return generator_; }
 
+  // Set the virtual frame for entry to the deferred code as a
+  // snapshot of the code generator's current frame (plus additional
+  // results).  This is optional, but should be done before branching
+  // or jumping to the deferred code.
+  inline void SetEntryFrame(Result* arg);
+
   JumpTarget* enter() { return &enter_; }
+
   void BindExit() { exit_.Bind(0); }
   void BindExit(Result* result) { exit_.Bind(result, 1); }
   void BindExit(Result* result0, Result* result1) {