use DebugLoc default ctor instead of DebugLoc::getUnknownLoc()


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100214 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 0a0b0ea..1995f79 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -312,7 +312,7 @@
                                MachineBasicBlock *FBB,
                              const SmallVectorImpl<MachineOperand> &Cond) const {
   // FIXME this should probably have a DebugLoc argument
-  DebugLoc dl = DebugLoc::getUnknownLoc();
+  DebugLoc dl;
 
   ARMFunctionInfo *AFI = MBB.getParent()->getInfo<ARMFunctionInfo>();
   int BOpc   = !AFI->isThumbFunction()
@@ -653,7 +653,7 @@
                                unsigned DestReg, unsigned SrcReg,
                                const TargetRegisterClass *DestRC,
                                const TargetRegisterClass *SrcRC) const {
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
 
   // tGPR is used sometimes in ARM instructions that need to avoid using
@@ -715,7 +715,7 @@
 storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
                     unsigned SrcReg, bool isKill, int FI,
                     const TargetRegisterClass *RC) const {
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
   MachineFunction &MF = *MBB.getParent();
   MachineFrameInfo &MFI = *MF.getFrameInfo();
@@ -769,7 +769,7 @@
 loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
                      unsigned DestReg, int FI,
                      const TargetRegisterClass *RC) const {
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
   MachineFunction &MF = *MBB.getParent();
   MachineFrameInfo &MFI = *MF.getFrameInfo();