Reapply 79977.
Use MDNodes to encode debug info in llvm IR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80406 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16DebugInfo.h b/lib/Target/PIC16/PIC16DebugInfo.h
index 2ccaba3..54e27c7 100644
--- a/lib/Target/PIC16/PIC16DebugInfo.h
+++ b/lib/Target/PIC16/PIC16DebugInfo.h
@@ -117,7 +117,7 @@
 
 
     private:
-    void SwitchToCU (GlobalVariable *CU);
+    void SwitchToCU (MDNode *CU);
     void SwitchToLine (unsigned Line, bool IsInBeginFunction = false);
 
     void PopulateDebugInfo (DIType Ty, unsigned short &TypeNo, bool &HasAux,