Lines Matching defs:NMBB

452 /// New restore point: NMBB
455 /// 1. Fallthrough to NMBB iff NMBB is inserted immediately above MBB in the
457 /// 2. Branch unconditionally to NMBB iff NMBB is inserted at any other place.
459                              MachineBasicBlock *NMBB,
462   // if NMBB isn't the new layout successor for BBToUpdate, insert unconditional
464   if (!BBToUpdate->isLayoutSuccessor(NMBB))
465     TII->insertUnconditionalBranch(*BBToUpdate, NMBB, DL);
474 /// new restore point: \p NMBB
476 /// 1. \p NMBB points to \p MBB unconditionally
477 /// 2. All dirtyPreds that previously pointed to \p MBB point to \p NMBB
485   // before the block layout change. This is just to ensure that if the NMBB is
487   // DirtyPred/CleanPred to NMBB
493   MachineBasicBlock *NMBB = MF->CreateMachineBasicBlock();
496   MF->insert(MF->end(), NMBB);
499     NMBB->addLiveIn(LI.PhysReg);
501   TII->insertUnconditionalBranch(*NMBB, MBB, DebugLoc());
506     SuccBB->ReplaceUsesOfBlockWith(MBB, NMBB);
508   NMBB->addSuccessor(MBB);
511     updateTerminator(BBToUpdate, NMBB, TII);
513   return NMBB;
518 /// DirtyPreds: All predecessors of \p NMBB that are ReachableByDirty.
521 /// changes to reset restore point from \p NMBB to \p MBB.
522 static void rollbackRestoreSplit(MachineFunction &MF, MachineBasicBlock *NMBB,
526   // For a BB, if NMBB is fallthrough in the current layout, then in the new
531     if (BB->getFallThrough(false) == NMBB)
534   NMBB->removeSuccessor(MBB);
536     SuccBB->ReplaceUsesOfBlockWith(NMBB, MBB);
538   NMBB->erase(NMBB->begin(), NMBB->end());
539   NMBB->eraseFromParent();