lib/CodeGen/PHIElimination.cpp

237   unsigned IncomingReg = 0;
238   bool reusedIncoming = false;  // Is IncomingReg reused from an earlier PHI?
255       IncomingReg = entry;
258       DEBUG(dbgs() << "Reusing " << PrintReg(IncomingReg) << " for " << *MPhi);
261       entry = IncomingReg = MF.getRegInfo().createVirtualRegister(RC);
265       .addReg(IncomingReg);
272     if (IncomingReg) {
273       LiveVariables::VarInfo &VI = LV->getVarInfo(IncomingReg);
276       LV->setPHIJoin(IncomingReg);
284           LV->removeVirtualRegisterKilled(IncomingReg, OldKill);
292       LV->addVirtualRegisterKilled(IncomingReg, PHICopy);
313     if (IncomingReg) {
315       // IncomingReg's live interval.
316       LiveInterval &IncomingLI = LIS->createEmptyInterval(IncomingReg);
355   // IncomingReg register in the corresponding predecessor basic block.
382     if (!reusedIncoming && IncomingReg) {
389                               IncomingReg);
397                             TII->get(TargetOpcode::COPY), IncomingReg)
435         if (reusedIncoming || !IncomingReg) {
463         LIS->addSegmentToEndOfBlock(IncomingReg, NewSrcInstr);
495             if (reusedIncoming || !IncomingReg) {
522   if (reusedIncoming || !IncomingReg) {