ManagedStatic: remove from PerfJITEventListener

This change originally landed as part of
e6f1f06 (D129120), which caused a
Fuchsia buildbot regression in ExecutionEngine tests.

I am resubmitting the backed out parts in smaller pieces after a careful
review.

Author: nhaehnle

llvm/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp

@@ -24,7 +24,6 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Errno.h"
 #include "llvm/Support/FileSystem.h"
-#include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Mutex.h"
 #include "llvm/Support/Path.h"
@@ -488,15 +487,14 @@ void PerfJITEventListener::NotifyDebug(uint64_t CodeAddr,
   }
 }
 
-// There should be only a single event listener per process, otherwise perf gets
-// confused.
-llvm::ManagedStatic<PerfJITEventListener> PerfListener;
-
 } // end anonymous namespace
 
 namespace llvm {
 JITEventListener *JITEventListener::createPerfJITEventListener() {
-  return &*PerfListener;
+  // There should be only a single event listener per process, otherwise perf
+  // gets confused.
+  static PerfJITEventListener PerfListener;
+  return &PerfListener;
 }
 
 } // namespace llvm