212 static bool isSourceDefinedByImplicitDef(const MachineInstr *MPhi,  in isSourceDefinedByImplicitDef()  argument
214   for (unsigned i = 1; i != MPhi->getNumOperands(); i += 2)  in isSourceDefinedByImplicitDef()
215     if (!isImplicitlyDefined(MPhi->getOperand(i).getReg(), MRI))  in isSourceDefinedByImplicitDef()
230   MachineInstr *MPhi = MBB.remove(&*MBB.begin());  in LowerPHINode()  local
232   unsigned NumSrcs = (MPhi->getNumOperands() - 1) / 2;  in LowerPHINode()
233   unsigned DestReg = MPhi->getOperand(0).getReg();  in LowerPHINode()
234   assert(MPhi->getOperand(0).getSubReg() == 0 && "Can't handle sub-reg PHIs");  in LowerPHINode()
235   bool isDead = MPhi->getOperand(0).isDead();  in LowerPHINode()
246   if (isSourceDefinedByImplicitDef(MPhi, MRI))  in LowerPHINode()
249     BuildMI(MBB, AfterPHIsIt, MPhi->getDebugLoc(),  in LowerPHINode()
254     unsigned &entry = LoweredPHIs[MPhi];  in LowerPHINode()
260       DEBUG(dbgs() << "Reusing " << PrintReg(IncomingReg) << " for " << *MPhi);  in LowerPHINode()
265     BuildMI(MBB, AfterPHIsIt, MPhi->getDebugLoc(),  in LowerPHINode()
300     LV->removeVirtualRegistersKilled(*MPhi);  in LowerPHINode()
305       LV->removeVirtualRegisterDead(DestReg, *MPhi);  in LowerPHINode()
352   for (unsigned i = 1; i != MPhi->getNumOperands(); i += 2)  in LowerPHINode()
353     --VRegPHIUseCount[BBVRegPair(MPhi->getOperand(i+1).getMBB()->getNumber(),  in LowerPHINode()
354                                  MPhi->getOperand(i).getReg())];  in LowerPHINode()
360     unsigned SrcReg = MPhi->getOperand(i*2+1).getReg();  in LowerPHINode()
361     unsigned SrcSubReg = MPhi->getOperand(i*2+1).getSubReg();  in LowerPHINode()
362     bool SrcUndef = MPhi->getOperand(i*2+1).isUndef() ||  in LowerPHINode()
369     MachineBasicBlock &opBlock = *MPhi->getOperand(i*2+2).getMBB();  in LowerPHINode()
389         NewSrcInstr = BuildMI(opBlock, InsertPos, MPhi->getDebugLoc(),  in LowerPHINode()
398         NewSrcInstr = BuildMI(opBlock, InsertPos, MPhi->getDebugLoc(),  in LowerPHINode()
526       LIS->RemoveMachineInstrFromMaps(*MPhi);  in LowerPHINode()
527     MF.DeleteMachineInstr(MPhi);  in LowerPHINode()