[llvm] r205979 - Revert "Follow-up to r205973: change the return type to const MDNode*."

[Adrian Prantl]

Author: adrian
Date: Thu Apr 10 13:37:53 2014
New Revision: 205979

URL: http://llvm.org/viewvc/llvm-project?rev=205979&view=rev
Log:
Revert "Follow-up to r205973: change the return type to const MDNode*."

This reverts commit r205974, it turns out that this wasn't such a great idea
after all. Using DIVariable as return value is self-documenting and marginally
more type safe.

Modified:
    llvm/trunk/include/llvm/CodeGen/MachineInstr.h

Modified: llvm/trunk/include/llvm/CodeGen/MachineInstr.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineInstr.h?rev=205979&r1=205978&r2=205979&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/MachineInstr.h (original)
+++ llvm/trunk/include/llvm/CodeGen/MachineInstr.h Thu Apr 10 13:37:53 2014
@@ -246,9 +246,10 @@ public:
 
   /// getDebugVariable() - Return the debug variable referenced by
   /// this DBG_VALUE instruction.
-  const MDNode *getDebugVariable() const {
+  DIVariable getDebugVariable() const {
     assert(isDebugValue() && "not a DBG_VALUE");
-    return getOperand(getNumOperands() - 1).getMetadata();
+    const MDNode *Var = getOperand(getNumOperands() - 1).getMetadata();
+    return DIVariable(Var);
   }
 
   /// emitError - Emit an error referring to the source location of this