[ic] Don't pass receiver and name to LoadGlobalIC.

src/full-codegen/x64/full-codegen-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 1228 matching lines @@
       __ Push(var->name());
       __ CallRuntime(Runtime::kThrowReferenceError);
     }
     __ jmp(done);
   }
 }
 
 
 void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy,
                                                TypeofMode typeof_mode) {
+#ifdef DEBUG
   Variable* var = proxy->var();
   DCHECK(var->IsUnallocatedOrGlobalSlot() ||
          (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL));
-  __ Move(LoadDescriptor::NameRegister(), var->name());
-  __ LoadGlobalObject(LoadDescriptor::ReceiverRegister());
-  __ Move(LoadDescriptor::SlotRegister(),
+#endif
+  __ Move(LoadGlobalDescriptor::SlotRegister(),
           SmiFromSlot(proxy->VariableFeedbackSlot()));
   CallLoadGlobalIC(typeof_mode);
 }
 
 
 void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
                                          TypeofMode typeof_mode) {
   // Record position before possible IC call.
   SetExpressionPosition(proxy);
   PrepareForBailoutForId(proxy->BeforeId(), BailoutState::NO_REGISTERS);
@@ skipping 2416 matching lines @@
   DCHECK_EQ(
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64