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/Transforms/IPO/StripSymbols.cpp b/lib/Transforms/IPO/StripSymbols.cpp
index 0b5e007..b213b01 100644
--- a/lib/Transforms/IPO/StripSymbols.cpp
+++ b/lib/Transforms/IPO/StripSymbols.cpp
@@ -221,9 +221,7 @@
     NMD->eraseFromParent();
   }
   MetadataContext &TheMetadata = M.getContext().getMetadata();
-  unsigned MDDbgKind = TheMetadata.getMDKind("dbg");
-  if (!MDDbgKind)
-    return Changed;
+  unsigned MDDbgKind = TheMetadata.getMDKindID("dbg");
 
   for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI) 
     for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE;