lib/CodeGen/BranchFolding.cpp

1096   MachineBasicBlock *PriorTBB = 0, *PriorFBB = 0;
1099     TII->AnalyzeBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, true);
1102     MadeChange |= PrevBB.CorrectExtraCFGEdges(PriorTBB, PriorFBB,
1108     if (PriorTBB && PriorTBB == PriorFBB) {
1112       if (PriorTBB != MBB)
1113         TII->InsertBranch(PrevBB, PriorTBB, 0, PriorCond, dl);
1126     if (PriorCond.empty() && !PriorTBB && MBB->pred_size() == 1 &&
1157     if (PriorTBB == MBB && PriorFBB == 0) {
1169       TII->InsertBranch(PrevBB, PriorTBB, 0, PriorCond, dl);
1178     if (PriorTBB == MBB) {
1199         MachineFunction::iterator(PriorTBB) == FallThrough &&
1209           !IsBetterFallthrough(PriorTBB, MBB))
1217                        << "To make fallthrough to: " << *PriorTBB << "\n");
1297               PriorTBB != MBB && PriorFBB != MBB) {
1298             if (PriorTBB == 0) {
1301               PriorTBB = MBB;
1308             TII->InsertBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, pdl);