547   MachineBasicBlock::iterator TIB = TrueBBI.BB->begin();  in ValidDiamond()  local
551   while (TIB != TIE && FIB != FIE) {  in ValidDiamond()
553     if (TIB->isDebugValue()) {  in ValidDiamond()
554       while (TIB != TIE && TIB->isDebugValue())  in ValidDiamond()
555         ++TIB;  in ValidDiamond()
556       if (TIB == TIE)  in ValidDiamond()
565     if (!TIB->isIdenticalTo(FIB))  in ValidDiamond()
568     ++TIB;  in ValidDiamond()
574   while (TIE != TIB) {  in ValidDiamond()
587   if (TIB == TIE || FIB == FIE)  in ValidDiamond()
591   while (TIE != TIB && FIE != FIB) {  in ValidDiamond()
594       while (TIE != TIB && TIE->isDebugValue())  in ValidDiamond()
596       if (TIE == TIB)  in ValidDiamond()