DwarfCompileUnit: Push DIDescriptors through a getDIE/insertDIE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194875 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 00a43a7..74c0269 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -368,7 +368,7 @@
 // scope then create and insert DIEs for these variables.
 DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU,
                                           const MDNode *SPNode) {
-  DIE *SPDie = SPCU->getDIE(SPNode);
+  DIE *SPDie = SPCU->getDIE(DIDescriptor(SPNode));
 
   assert(SPDie && "Unable to find subprogram DIE!");
   DISubprogram SP(SPNode);