PPC: Fix "[compiler] Remove the special case "prototype" load in class literals."

src/full-codegen/ppc/full-codegen-ppc.cc

 // Copyright 2014 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_PPC
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 2228 matching lines @@
   __ bind(&done);
   context()->Plug(r3);
 }
 
 
 void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) {
   for (int i = 0; i < lit->properties()->length(); i++) {
     ObjectLiteral::Property* property = lit->properties()->at(i);
     Expression* value = property->value();
 
+    Register scratch = r4;
     if (property->is_static()) {
       __ LoadP(scratch, MemOperand(sp, kPointerSize));  // constructor
     } else {
       __ LoadP(scratch, MemOperand(sp, 0));  // prototype
     }
     __ push(scratch);
     EmitPropertyKey(property, lit->GetIdForProperty(i));
 
     // The static prototype property is read only. We handle the non computed
     // property name case in the parser. Since this is the only case where we
@@ skipping 2394 matching lines @@
     return ON_STACK_REPLACEMENT;
   }
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OsrAfterStackCheck()->entry());
   return OSR_AFTER_STACK_CHECK;
 }
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_PPC