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

llvm-svn: 103194
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
index 3012e8e..ae95ae4 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -345,15 +345,13 @@
                                    MachineBasicBlock::iterator MI,
                                    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 (MI != MBB.end()) DL = MI->getDebugLoc();
-
   if (DestRC == PPC::GPRCRegisterClass) {
     BuildMI(MBB, MI, DL, get(PPC::OR), DestReg).addReg(SrcReg).addReg(SrcReg);
   } else if (DestRC == PPC::G8RCRegisterClass) {