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

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index 14519da4c2501cd6f7e3df6ab2a65860991e4599..16cefdfaae8f219f60f7ee091b086304443fa27a 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -411,7 +411,7 @@ MUST_USE_RESULT static MaybeObject* CallJsBuiltin(
     Isolate* isolate,
     const char* name,
     BuiltinArguments<NO_EXTRA_ARGUMENTS> args) {
-  HandleScope handleScope;
+  HandleScope handleScope(isolate);
 
   Handle<Object> js_builtin =
       GetProperty(Handle<JSObject>(
@@ -1038,7 +1038,7 @@ MUST_USE_RESULT static MaybeObject* HandleApiCallHelper(
   ASSERT(is_construct == CalledAsConstructor(isolate));
   Heap* heap = isolate->heap();
 
-  HandleScope scope;
+  HandleScope scope(isolate);
   Handle<JSFunction> function = args.called_function();
   ASSERT(function->shared()->IsApiFunction());
 
@@ -1072,7 +1072,7 @@ MUST_USE_RESULT static MaybeObject* HandleApiCallHelper(
     Object* data_obj = call_data->data();
     Object* result;
 
-    LOG(ApiObjectAccess("call", JSObject::cast(*args.receiver())));
+    LOG(isolate, ApiObjectAccess("call", JSObject::cast(*args.receiver())));
     ASSERT(raw_holder->IsJSObject());
 
     CustomArguments custom(isolate);
@@ -1212,9 +1212,9 @@ MUST_USE_RESULT static MaybeObject* HandleApiCallAsFunctionOrConstructor(
   // Get the data for the call and perform the callback.
   Object* result;
   {
-    HandleScope scope;
+    HandleScope scope(isolate);
 
-    LOG(ApiObjectAccess("call non-function", obj));
+    LOG(isolate, ApiObjectAccess("call non-function", obj));
 
     CustomArguments custom(isolate);
     v8::ImplementationUtilities::PrepareArgumentsData(custom.end(),
@@ -1603,7 +1603,8 @@ void Builtins::Setup(bool create_heap_objects) {
         }
       }
       // Log the event and add the code to the builtins array.
-      PROFILE(CodeCreateEvent(Logger::BUILTIN_TAG,
+      PROFILE(ISOLATE,
+              CodeCreateEvent(Logger::BUILTIN_TAG,
                               Code::cast(code),
                               functions[i].s_name));
       GDBJIT(AddCode(GDBJITInterface::BUILTIN,