lib/CodeGen/PHIElimination.cpp

367     MachineBasicBlock &opBlock = *MPhi->getOperand(i*2+2).getMBB();
372     if (!MBBsInsertedInto.insert(&opBlock))
378       findPHICopyInsertPoint(&opBlock, &MBB, SrcReg);
387         NewSrcInstr = BuildMI(opBlock, InsertPos, MPhi->getDebugLoc(),
396         NewSrcInstr = BuildMI(opBlock, InsertPos, MPhi->getDebugLoc(),
406         !VRegPHIUseCount[BBVRegPair(opBlock.getNumber(), SrcReg)] &&
407         !LV->isLiveOut(SrcReg, opBlock)) {
424       MachineBasicBlock::iterator KillInst = opBlock.end();
425       MachineBasicBlock::iterator FirstTerm = opBlock.getFirstTerminator();
427           Term != opBlock.end(); ++Term) {
432       if (KillInst == opBlock.end()) {
438           while (KillInst != opBlock.begin()) {
455       // This vreg no longer lives all of the way through opBlock.
456       unsigned opBlockNum = opBlock.getNumber();
467           !VRegPHIUseCount[BBVRegPair(opBlock.getNumber(), SrcReg)]) {
471         for (MachineBasicBlock::succ_iterator SI = opBlock.succ_begin(),
472              SE = opBlock.succ_end(); SI != SE; ++SI) {
484           MachineBasicBlock::iterator KillInst = opBlock.end();
485           MachineBasicBlock::iterator FirstTerm = opBlock.getFirstTerminator();
487               Term != opBlock.end(); ++Term) {
492           if (KillInst == opBlock.end()) {
498               while (KillInst != opBlock.begin()) {
515                               LIS->getMBBEndIdx(&opBlock));