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) {
1157     if (PriorTBB == MBB && PriorFBB == 0) {
1166     if (PriorFBB == MBB) {
1183         TII->InsertBranch(PrevBB, PriorFBB, 0, NewPriorCond, dl);
1198     if (MBB->succ_empty() && !PriorCond.empty() && PriorFBB == 0 &&
1297               PriorTBB != MBB && PriorFBB != MBB) {
1299               assert(PriorCond.empty() && PriorFBB == 0 &&
1303               assert(PriorFBB == 0 && "Machine CFG out of date!");
1304               PriorFBB = MBB;
1308             TII->InsertBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, pdl);