Add a DebugLoc argument to TargetInstrInfo::copyRegToReg, so that it
doesn't have to guess.

llvm-svn: 103194
diff --git a/llvm/lib/Target/Sparc/SparcInstrInfo.cpp b/llvm/lib/Target/Sparc/SparcInstrInfo.cpp
index a519d24..8e49eca 100644
--- a/llvm/lib/Target/Sparc/SparcInstrInfo.cpp
+++ b/llvm/lib/Target/Sparc/SparcInstrInfo.cpp
@@ -122,15 +122,13 @@
                                   MachineBasicBlock::iterator I,
                                   unsigned DestReg, unsigned SrcReg,
                                   const TargetRegisterClass *DestRC,
-                                  const TargetRegisterClass *SrcRC) const {
+                                  const TargetRegisterClass *SrcRC,
+                                  DebugLoc DL) const {
   if (DestRC != SrcRC) {
     // Not yet supported!
     return false;
   }
 
-  DebugLoc DL;
-  if (I != MBB.end()) DL = I->getDebugLoc();
-
   if (DestRC == SP::IntRegsRegisterClass)
     BuildMI(MBB, I, DL, get(SP::ORrr), DestReg).addReg(SP::G0).addReg(SrcReg);
   else if (DestRC == SP::FPRegsRegisterClass)