Adding 'isolates' argument to LOG to get rid of multiple TLS fetches in profiling.

src/code-stubs.cc

 // Copyright 2006-2008 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 44 matching lines @@
 
   // Generate the code for the stub.
   masm->set_generating_stub(true);
   Generate(masm);
 }
 
 
 void CodeStub::RecordCodeGeneration(Code* code, MacroAssembler* masm) {
   code->set_major_key(MajorKey());
 
-  PROFILE(CodeCreateEvent(Logger::STUB_TAG, code, GetName()));
+  PROFILE(ISOLATE, CodeCreateEvent(Logger::STUB_TAG, code, GetName()));
   GDBJIT(AddCode(GDBJITInterface::STUB, GetName(), code));
   COUNTERS->total_stubs_code_size()->Increment(code->instruction_size());
 
 #ifdef ENABLE_DISASSEMBLER
   if (FLAG_print_code_stubs) {
 #ifdef DEBUG
     Print();
 #endif
     code->Disassemble(GetName());
     PrintF("\n");
@@ skipping 148 matching lines @@
   OS::SNPrintF(Vector<char>(name_, kMaxNameLength),
                "InstanceofStub%s%s%s",
                args,
                inline_check,
                return_true_false_object);
   return name_;
 }
 
 
 } }  // namespace v8::internal