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/CellSPU/SPUInstrInfo.cpp b/lib/Target/CellSPU/SPUInstrInfo.cpp
index 86825c8..423da3b 100644
--- a/lib/Target/CellSPU/SPUInstrInfo.cpp
+++ b/lib/Target/CellSPU/SPUInstrInfo.cpp
@@ -262,7 +262,7 @@
   // we instruction select bitconvert i64 -> f64 as a noop for example, so our
   // types have no specific meaning.
 
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (MI != MBB.end()) DL = MI->getDebugLoc();
 
   if (DestRC == SPU::R8CRegisterClass) {
@@ -317,7 +317,7 @@
     llvm_unreachable("Unknown regclass!");
   }
 
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (MI != MBB.end()) DL = MI->getDebugLoc();
   addFrameReference(BuildMI(MBB, MI, DL, get(opc))
                     .addReg(SrcReg, getKillRegState(isKill)), FrameIdx);
@@ -351,7 +351,7 @@
     llvm_unreachable("Unknown regclass in loadRegFromStackSlot!");
   }
 
-  DebugLoc DL = DebugLoc::getUnknownLoc();
+  DebugLoc DL;
   if (MI != MBB.end()) DL = MI->getDebugLoc();
   addFrameReference(BuildMI(MBB, MI, DL, get(opc), DestReg), FrameIdx);
 }
@@ -553,7 +553,7 @@
                            MachineBasicBlock *FBB,
                            const SmallVectorImpl<MachineOperand> &Cond) const {
   // FIXME this should probably have a DebugLoc argument
-  DebugLoc dl = DebugLoc::getUnknownLoc();
+  DebugLoc dl;
   // Shouldn't be a fall through.
   assert(TBB && "InsertBranch must not be told to insert a fallthrough");
   assert((Cond.size() == 2 || Cond.size() == 0) &&