diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 53d99f0..091158d 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -49,7 +49,9 @@
   }
 
   // If debug info generation is enabled, create the CGDebugInfo object.
-  DebugInfo = GenerateDebugInfo ? new CGDebugInfo(this) : 0;      
+  DebugInfo = GenerateDebugInfo ? new CGDebugInfo(this) : 0;
+
+  Block.GlobalUniqueCount = 0;
 }
 
 CodeGenModule::~CodeGenModule() {