821         unsigned SplitReg = 0;  in splitLifetimes()  local
826             if (SplitReg == 0) {  in splitLifetimes()
827               SplitReg = MRI.createVirtualRegister(MRI.getRegClass(Def));  in splitLifetimes()
829                       TII->get(TargetOpcode::COPY), SplitReg)  in splitLifetimes()
832             BBJ.substituteRegister(Def, SplitReg, 0, *TRI);  in splitLifetimes()
834         if (!SplitReg)  in splitLifetimes()
840               I.substituteRegister(Def, SplitReg, 0, *TRI);  in splitLifetimes()
1194         Register SplitReg = MRI.createVirtualRegister(MRI.getRegClass(OldReg));  in rewriteScheduledInstr()  local
1196                 SplitReg)  in rewriteScheduledInstr()
1198         UseOp.setReg(SplitReg);  in rewriteScheduledInstr()
2353       Register SplitReg = MRI.createVirtualRegister(MRI.getRegClass(OrigReg));  in updateInstrUse()  local
2355               SplitReg)  in updateInstrUse()
2357       UseMO.setReg(SplitReg);  in updateInstrUse()