rename getMDKind -> getMDKindID, make it autoinsert if an MD Kind
doesn't exist already, eliminate registerMDKind.  Tidy up a bunch
of random stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92225 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index c8cb60f..3732818 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -1119,7 +1119,7 @@
 void DebugInfoFinder::processModule(Module &M) {
 
   MetadataContext &TheMetadata = M.getContext().getMetadata();
-  unsigned MDDbgKind = TheMetadata.getMDKind("dbg");
+  unsigned MDDbgKind = TheMetadata.getMDKindID("dbg");
 
   for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
     for (Function::iterator FI = (*I).begin(), FE = (*I).end(); FI != FE; ++FI)
@@ -1127,9 +1127,8 @@
            ++BI) {
         if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
           processDeclare(DDI);
-        else if (MDDbgKind) 
-          if (MDNode *L = TheMetadata.getMD(MDDbgKind, BI)) 
-            processLocation(DILocation(L));
+        else if (MDNode *L = TheMetadata.getMD(MDDbgKind, BI)) 
+          processLocation(DILocation(L));
       }
 
   NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv");