Use thread_local for thread local storage on non MSVC targets

Author: franksinankaya

src/vm/eventpipebuffermanager.cpp

@@ -10,11 +10,11 @@
 
 #ifdef FEATURE_PERFTRACING
 
-#ifndef __llvm__
+#ifndef __GNUC__
 __declspec(thread) ThreadEventBufferList ThreadEventBufferList::gCurrentThreadEventBufferList;
-#else // !__llvm__
+#else // !__GNUC__
 thread_local ThreadEventBufferList ThreadEventBufferList::gCurrentThreadEventBufferList;
-#endif // !__llvm__
+#endif // !__GNUC__
 
 EventPipeBufferManager::EventPipeBufferManager()
 {

src/vm/eventpipebuffermanager.h

@@ -21,11 +21,11 @@ class EventPipeBufferList;
 // when the thread dies so we can free EventPipeBufferList in the destructor.  
 class ThreadEventBufferList
 {
-#ifndef __llvm__
+#ifndef __GNUC__
 __declspec(thread) static ThreadEventBufferList gCurrentThreadEventBufferList;
-#else // !__llvm__
+#else // !__GNUC__
 thread_local static ThreadEventBufferList gCurrentThreadEventBufferList;
-#endif // !__llvm__
+#endif // !__GNUC__
     EventPipeBufferList * m_pThreadEventBufferList = NULL;
     ~ThreadEventBufferList();