Lines Matching defs:SingleValReg

47   bool IsSingleValuePHICycle(MachineInstr *MI, unsigned &SingleValReg,
107 /// are copies of SingleValReg, possibly via copies through other PHIs. If
108 /// SingleValReg is zero on entry, it is set to the register with the single
112                                          unsigned &SingleValReg,
143       if (!IsSingleValuePHICycle(SrcMI, SingleValReg, PHIsInCycle))
147       if (SingleValReg != 0 && SingleValReg != SrcReg)
149       SingleValReg = SrcReg;
189     unsigned SingleValReg = 0;
191     if (IsSingleValuePHICycle(MI, SingleValReg, PHIsInCycle) &&
192         SingleValReg != 0) {
194       if (!MRI->constrainRegClass(SingleValReg, MRI->getRegClass(OldReg)))
197       MRI->replaceRegWith(OldReg, SingleValReg);
200       // The kill flags on OldReg and SingleValReg may no longer be correct.
201       MRI->clearKillFlags(SingleValReg);