Use IsPropertyName instead of IsInternalizedString in VisitObjectLiteral.

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 1334 matching lines @@
     }
     switch (property->kind()) {
       case ObjectLiteral::Property::CONSTANT:
         UNREACHABLE();
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
         DCHECK(!CompileTimeValue::IsCompileTimeValue(property->value()));
       // Fall through.
       case ObjectLiteral::Property::COMPUTED:
         // It is safe to use [[Put]] here because the boilerplate already
         // contains computed properties with an uninitialized value.
-        if (key->value()->IsInternalizedString()) {
+        if (key->IsPropertyName()) {
           if (property->emit_store()) {
             VisitForAccumulatorValue(value);
             DCHECK(StoreDescriptor::ValueRegister().is(r2));
             __ mov(StoreDescriptor::NameRegister(), Operand(key->value()));
             __ LoadP(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
             EmitLoadStoreICSlot(property->GetSlot(0));
             CallStoreIC();
             PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS);
 
             if (NeedsHomeObject(value)) {
@@ skipping 2307 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