Revert revisions 7215 and 7212.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
===================================================================
--- src/x64/lithium-codegen-x64.cc	(revision 7218)
+++ src/x64/lithium-codegen-x64.cc	(working copy)
@@ -1984,7 +1984,7 @@
 }
 
 
-void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) {
+void LCodeGen::DoLoadGlobal(LLoadGlobal* instr) {
   Register result = ToRegister(instr->result());
   if (result.is(rax)) {
     __ load_rax(instr->hydrogen()->cell().location(),
@@ -2000,18 +2000,6 @@
 }
 
 
-void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
-  ASSERT(ToRegister(instr->global_object()).is(rax));
-  ASSERT(ToRegister(instr->result()).is(rax));
-
-  __ Move(rcx, instr->name());
-  RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET :
-                                               RelocInfo::CODE_TARGET_CONTEXT;
-  Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
-  CallCode(ic, mode, instr);
-}
-
-
 void LCodeGen::DoStoreGlobal(LStoreGlobal* instr) {
   Register value = ToRegister(instr->InputAt(0));
   Register temp = ToRegister(instr->TempAt(0));