assert(!MO.isDef() && "Cannot handle PHI def of partial register.");
// PHI operands are paired: (Reg, PredMBB).
// Extend the live range to be live-out from PredMBB.
assert(!MO.isDef() && "Cannot handle PHI def of partial register.");
// PHI operands are paired: (Reg, PredMBB).
// Extend the live range to be live-out from PredMBB.