Lines Matching defs:NMBB

460 /// New restore point: NMBB
463 /// 1. Fallthrough to NMBB iff NMBB is inserted immediately above MBB in the
465 /// 2. Branch unconditionally to NMBB iff NMBB is inserted at any other place.
467                              MachineBasicBlock *NMBB,
470   // if NMBB isn't the new layout successor for BBToUpdate, insert unconditional
472   if (!BBToUpdate->isLayoutSuccessor(NMBB))
473     TII->insertUnconditionalBranch(*BBToUpdate, NMBB, DL);
482 /// new restore point: \p NMBB
484 /// 1. \p NMBB points to \p MBB unconditionally
485 /// 2. All dirtyPreds that previously pointed to \p MBB point to \p NMBB
493   // before the block layout change. This is just to ensure that if the NMBB is
495   // DirtyPred/CleanPred to NMBB
501   MachineBasicBlock *NMBB = MF->CreateMachineBasicBlock();
504   MF->insert(MF->end(), NMBB);
507     NMBB->addLiveIn(LI.PhysReg);
509   TII->insertUnconditionalBranch(*NMBB, MBB, DebugLoc());
514     SuccBB->ReplaceUsesOfBlockWith(MBB, NMBB);
516   NMBB->addSuccessor(MBB);
519     updateTerminator(BBToUpdate, NMBB, TII);
521   return NMBB;
526 /// DirtyPreds: All predecessors of \p NMBB that are ReachableByDirty.
529 /// changes to reset restore point from \p NMBB to \p MBB.
530 static void rollbackRestoreSplit(MachineFunction &MF, MachineBasicBlock *NMBB,
534   // For a BB, if NMBB is fallthrough in the current layout, then in the new
539     if (BB->getFallThrough(false) == NMBB)
542   NMBB->removeSuccessor(MBB);
544     SuccBB->ReplaceUsesOfBlockWith(NMBB, MBB);
546   NMBB->erase(NMBB->begin(), NMBB->end());
547   NMBB->eraseFromParent();