Reapply my less-lock-contention-in-leak-detector patch, now with new files

actually added.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79429 91177308-0d34-0410-b5e6-96231b3b80d8

lib/VMCore/LLVMContextImpl.h

@@ -16,6 +16,7 @@
 #define LLVM_LLVMCONTEXT_IMPL_H
 
 #include "ConstantsContext.h"
+#include "LeaksContext.h"
 #include "TypesContext.h"
 #include "llvm/LLVMContext.h"
 #include "llvm/Constants.h"
@@ -134,6 +135,10 @@ public:
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
   
+  // Lock used for guarding access to the leak detector
+  sys::SmartMutex<true> LLVMObjectsLock;
+  LeakDetectorImpl<Value> LLVMObjects;
+  
   // Lock used for guarding access to the type maps.
   sys::SmartMutex<true> TypeMapLock;