Disallow dereferencing deferred handles when generating optimized code.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index 967b645c81b9ac132a12276fd9ebc04a3397210e..bc3281eeaba7df091da45395b03d3b813efa8299 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -1785,7 +1785,6 @@ class LInvokeFunction: public LTemplateInstruction<1, 1, 0> {
   virtual void PrintDataTo(StringStream* stream);
 
   int arity() const { return hydrogen()->argument_count() - 1; }
-  Handle<JSFunction> known_function() { return hydrogen()->known_function(); }
 };
 
 
@@ -1851,7 +1850,6 @@ class LCallKnownGlobal: public LTemplateInstruction<1, 0, 0> {
 
   virtual void PrintDataTo(StringStream* stream);
 
-  Handle<JSFunction> target() const { return hydrogen()->target();  }
   int arity() const { return hydrogen()->argument_count() - 1;  }
 };
 
@@ -2403,8 +2401,6 @@ class LFunctionLiteral: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(FunctionLiteral, "function-literal")
   DECLARE_HYDROGEN_ACCESSOR(FunctionLiteral)
-
-  Handle<SharedFunctionInfo> shared_info() { return hydrogen()->shared_info(); }
 };