Make the GC aware of JSReceiver pointers in LookupResults.

src/arm/stub-cache-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2486 matching lines @@
   //  -- lr    : return address
   // -----------------------------------
 
   Label miss;
 
   GenerateNameCheck(name, &miss);
 
   // Get the number of arguments.
   const int argc = arguments().immediate();
 
-  LookupResult lookup;
+  LookupResult lookup(isolate());
   LookupPostInterceptor(holder, name, &lookup);
 
   // Get the receiver from the stack.
   __ ldr(r1, MemOperand(sp, argc * kPointerSize));
 
   CallInterceptorCompiler compiler(this, arguments(), r2, extra_ic_state_);
   MaybeObject* result = compiler.Compile(masm(),
                                          object,
                                          holder,
                                          name,
@@ skipping 383 matching lines @@
 MaybeObject* LoadStubCompiler::CompileLoadInterceptor(JSObject* object,
                                                       JSObject* holder,
                                                       String* name) {
   // ----------- S t a t e -------------
   //  -- r0    : receiver
   //  -- r2    : name
   //  -- lr    : return address
   // -----------------------------------
   Label miss;
 
-  LookupResult lookup;
+  LookupResult lookup(isolate());
   LookupPostInterceptor(holder, name, &lookup);
   GenerateLoadInterceptor(object,
                           holder,
                           &lookup,
                           r0,
                           r2,
                           r3,
                           r1,
                           r4,
                           name,
@@ skipping 137 matching lines @@
   //  -- lr    : return address
   //  -- r0    : key
   //  -- r1    : receiver
   // -----------------------------------
   Label miss;
 
   // Check the key is the cached one.
   __ cmp(r0, Operand(Handle<String>(name)));
   __ b(ne, &miss);
 
-  LookupResult lookup;
+  LookupResult lookup(isolate());
   LookupPostInterceptor(holder, name, &lookup);
   GenerateLoadInterceptor(receiver,
                           holder,
                           &lookup,
                           r1,
                           r0,
                           r2,
                           r3,
                           r4,
                           name,
@@ skipping 1380 matching lines @@
   Handle<Code> ic_miss = masm->isolate()->builtins()->KeyedStoreIC_Miss();
   __ Jump(ic_miss, RelocInfo::CODE_TARGET);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM