58     bool IsSingleValuePHICycle(MachineInstr *MI, unsigned &SingleValReg,
97                                          unsigned &SingleValReg,  in IsSingleValuePHICycle()  argument
128       if (!IsSingleValuePHICycle(SrcMI, SingleValReg, PHIsInCycle))  in IsSingleValuePHICycle()
132       if (SingleValReg != 0 && SingleValReg != SrcReg)  in IsSingleValuePHICycle()
134       SingleValReg = SrcReg;  in IsSingleValuePHICycle()
175     unsigned SingleValReg = 0;  in OptimizeBB()  local
177     if (IsSingleValuePHICycle(MI, SingleValReg, PHIsInCycle) &&  in OptimizeBB()
178         SingleValReg != 0) {  in OptimizeBB()
180       if (!MRI->constrainRegClass(SingleValReg, MRI->getRegClass(OldReg)))  in OptimizeBB()
183       MRI->replaceRegWith(OldReg, SingleValReg);  in OptimizeBB()
187       MRI->clearKillFlags(SingleValReg);  in OptimizeBB()