Cross Reference: /external/llvm/lib/CodeGen/PHIElimination.cpp

Lines Matching defs:MBB
68     bool EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB);
69     void LowerPHINode(MachineBasicBlock &MBB,
81     bool SplitPHIEdges(MachineFunction &MF, MachineBasicBlock &MBB,
86     bool isLiveIn(unsigned Reg, MachineBasicBlock *MBB);
87     bool isLiveOutPastPHIs(unsigned Reg, MachineBasicBlock *MBB);
183                                              MachineBasicBlock &MBB) {
184   if (MBB.empty() || !MBB.front().isPHI())
190     std::prev(MBB.SkipPHIsAndLabels(MBB.begin()));
192   while (MBB.front().isPHI())
193     LowerPHINode(MBB, LastPHIIt);
221 void PHIElimination::LowerPHINode(MachineBasicBlock &MBB,
228   MachineInstr *MPhi = MBB.remove(MBB.begin());
236   MachineFunction &MF = *MBB.getParent();
247     BuildMI(MBB, AfterPHIsIt, MPhi->getDebugLoc(),
263     BuildMI(MBB, AfterPHIsIt, MPhi->getDebugLoc(),
282         if (MachineInstr *OldKill = VI.findKill(&MBB)) {
285           DEBUG(MBB.dump());
312     SlotIndex MBBStartIndex = LIS->getMBBStartIdx(&MBB);
314       // Add the region from the beginning of MBB to the copy instruction to
330       // A dead PHI's live range begins and ends at the start of the MBB, but
340       // Otherwise, remove the region from the beginning of MBB to the copy
378       findPHICopyInsertPoint(&opBlock, &MBB, SrcReg);
535   for (const auto &MBB : MF)
536     for (const auto &BBI : MBB) {
546                                    MachineBasicBlock &MBB,
548   if (MBB.empty() || !MBB.front().isPHI() || MBB.isLandingPad())
551   const MachineLoop *CurLoop = MLI ? MLI->getLoopFor(&MBB) : nullptr;
552   bool IsLoopHeader = CurLoop && &MBB == CurLoop->getHeader();
555   for (MachineBasicBlock::iterator BBI = MBB.begin(), BBE = MBB.end();
560       // Is there a critical edge from PreMBB to MBB?
566       if (PreMBB == &MBB && !SplitAllCriticalEdges)
582                    << PreMBB->getNumber() << " -> BB#" << MBB.getNumber()
585       // If Reg is not live-in to MBB, it means it must be live-in to some
589       // If Reg *is* live-in to MBB, the interference is inevitable and a copy
593       bool ShouldSplit = !isLiveIn(Reg, &MBB) || SplitAllCriticalEdges;
610       if (!PreMBB->SplitCriticalEdge(&MBB, this)) {
621 bool PHIElimination::isLiveIn(unsigned Reg, MachineBasicBlock *MBB) {
625     return LIS->isLiveInToMBB(LIS->getInterval(Reg), MBB);
627     return LV->isLiveIn(Reg, *MBB);
630 bool PHIElimination::isLiveOutPastPHIs(unsigned Reg, MachineBasicBlock *MBB) {
640     for (MachineBasicBlock::succ_iterator SI = MBB->succ_begin(),
641          SE = MBB->succ_end(); SI != SE; ++SI) {
647     return LV->isLiveOut(Reg, *MBB);