stop using DebugLoc::getUnknownLoc()


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100215 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 963abd9..d54566b 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -384,9 +384,9 @@
 
 /// ResetDebugLoc - Set MF's and SDB's DebugLocs to Unknown.
 static void ResetDebugLoc(SelectionDAGBuilder *SDB, FastISel *FastIS) {
-  SDB->setCurDebugLoc(DebugLoc::getUnknownLoc());
+  SDB->setCurDebugLoc(DebugLoc());
   if (FastIS)
-    FastIS->setCurDebugLoc(DebugLoc::getUnknownLoc());
+    FastIS->setCurDebugLoc(DebugLoc());
 }
 
 void SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB,