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/PIC16/PIC16InstrInfo.cpp b/lib/Target/PIC16/PIC16InstrInfo.cpp
index da16e83..365e8b2 100644
--- a/lib/Target/PIC16/PIC16InstrInfo.cpp
+++ b/lib/Target/PIC16/PIC16InstrInfo.cpp
@@ -72,7 +72,7 @@
                                          unsigned SrcReg, bool isKill, int FI,
                                          const TargetRegisterClass *RC) const {
   PIC16TargetLowering *PTLI = TM.getTargetLowering();
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
 
   const Function *Func = MBB.getParent()->getFunction();
@@ -114,7 +114,7 @@
                                           unsigned DestReg, int FI,
                                           const TargetRegisterClass *RC) const {
   PIC16TargetLowering *PTLI = TM.getTargetLowering();
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
 
   const Function *Func = MBB.getParent()->getFunction();
@@ -154,7 +154,7 @@
                                    unsigned DestReg, unsigned SrcReg,
                                    const TargetRegisterClass *DestRC,
                                    const TargetRegisterClass *SrcRC) const {
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
 
   if (DestRC == PIC16::FSR16RegisterClass) {
@@ -202,7 +202,7 @@
   if (FBB == 0) { // One way branch.
     if (Cond.empty()) {
       // Unconditional branch?
-      DebugLoc dl = DebugLoc::getUnknownLoc();
+      DebugLoc dl;
       BuildMI(&MBB, dl, get(PIC16::br_uncond)).addMBB(TBB);
     }
     return 1;