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

src/full-codegen/s390/full-codegen-s390.cc

 // Copyright 2015 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_S390
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 1202 matching lines @@
       __ mov(r2, Operand(var->name()));
       __ push(r2);
       __ CallRuntime(Runtime::kThrowReferenceError);
     }
     __ b(done);
   }
 }
 
 void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy,
                                                TypeofMode typeof_mode) {
+#ifdef DEBUG
   Variable* var = proxy->var();
   DCHECK(var->IsUnallocatedOrGlobalSlot() ||
          (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL));
-  __ LoadGlobalObject(LoadDescriptor::ReceiverRegister());
-  __ mov(LoadDescriptor::NameRegister(), Operand(var->name()));
-  __ mov(LoadDescriptor::SlotRegister(),
+#endif
+  __ mov(LoadGlobalDescriptor::SlotRegister(),
          Operand(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);
   Variable* var = proxy->var();
@@ skipping 2455 matching lines @@
   DCHECK(kOSRBranchInstruction == br_instr);
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OnStackReplacement()->entry());
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_S390