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/MachineSSAUpdater.cpp b/lib/CodeGen/MachineSSAUpdater.cpp
index 2255dc3..b79cdbb 100644
--- a/lib/CodeGen/MachineSSAUpdater.cpp
+++ b/lib/CodeGen/MachineSSAUpdater.cpp
@@ -125,7 +125,7 @@
                            const TargetRegisterClass *RC,
                            MachineRegisterInfo *MRI, const TargetInstrInfo *TII) {
   unsigned NewVR = MRI->createVirtualRegister(RC);
-  return BuildMI(*BB, I, DebugLoc::getUnknownLoc(), TII->get(Opcode), NewVR);
+  return BuildMI(*BB, I, DebugLoc(), TII->get(Opcode), NewVR);
 }
                           
 /// GetValueInMiddleOfBlock - Construct SSA form, materializing a value that