Small tweaks to make the x64 full code generator generate

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
===================================================================
--- src/x64/full-codegen-x64.cc	(revision 5511)
+++ src/x64/full-codegen-x64.cc	(working copy)
@@ -376,10 +376,10 @@
     Label* materialize_false) const {
   NearLabel done;
   __ bind(materialize_true);
-  __ Move(result_register(), Factory::true_value());
+  __ LoadRoot(result_register(), Heap::kTrueValueRootIndex);
   __ jmp(&done);
   __ bind(materialize_false);
-  __ Move(result_register(), Factory::false_value());
+  __ LoadRoot(result_register(), Heap::kFalseValueRootIndex);
   __ bind(&done);
 }
 
@@ -389,10 +389,10 @@
     Label* materialize_false) const {
   NearLabel done;
   __ bind(materialize_true);
-  __ Push(Factory::true_value());
+  __ PushRoot(Heap::kTrueValueRootIndex);
   __ jmp(&done);
   __ bind(materialize_false);
-  __ Push(Factory::false_value());
+  __ PushRoot(Heap::kFalseValueRootIndex);
   __ bind(&done);
 }
 
@@ -2251,12 +2251,12 @@
 
   // Functions have class 'Function'.
   __ bind(&function);
-  __ Move(rax, Factory::function_class_symbol());
+  __ LoadRoot(rax, Heap::kFunctionClassSymbolRootIndex);
   __ jmp(&done);
 
   // Objects with a non-function constructor have class 'Object'.
   __ bind(&non_function_constructor);
-  __ Move(rax, Factory::Object_symbol());
+  __ LoadRoot(rax, Heap::kObjectSymbolRootIndex);
   __ jmp(&done);
 
   // Non-JS objects have class null.
@@ -2711,10 +2711,10 @@
   __ cmpq(tmp, FieldOperand(right, JSRegExp::kDataOffset));
   __ j(equal, &ok);
   __ bind(&fail);
-  __ Move(rax, Factory::false_value());
+  __ LoadRoot(rax, Heap::kFalseValueRootIndex);
   __ jmp(&done);
   __ bind(&ok);
-  __ Move(rax, Factory::true_value());
+  __ LoadRoot(rax, Heap::kTrueValueRootIndex);
   __ bind(&done);
 
   context()->Plug(rax);