390     SrcMBB = *SrcMBB->succ_begin();  in singlePathTo()
565   MachineBasicBlock::succ_iterator It = MBB->succ_begin();  in getFalseBranch()
654   for (MachineBasicBlock::succ_iterator It = SrcMBB->succ_begin(),  in cloneSuccessorList()
952   MachineBasicBlock *childBlk = *MBB->succ_begin();  in serialPatternMatch()
986     && *TrueMBB->succ_begin() == *FalseMBB->succ_begin()) {  in ifPatternMatch()
988     LandBlk = *TrueMBB->succ_begin();  in ifPatternMatch()
989   } else if (TrueMBB->succ_size() == 1 && *TrueMBB->succ_begin() == FalseMBB) {  in ifPatternMatch()
994              && *FalseMBB->succ_begin() == TrueMBB) {  in ifPatternMatch()
1003     LandBlk = *FalseMBB->succ_begin();  in ifPatternMatch()
1006     LandBlk = *TrueMBB->succ_begin();  in ifPatternMatch()
1168       Num += serialPatternMatch(*HeadMBB->succ_begin());  in handleJumpintoIfImp()
1169       Num += serialPatternMatch(*std::next(HeadMBB->succ_begin()));  in handleJumpintoIfImp()
1178     DownBlk = (DownBlk->succ_size() == 1) ? (*DownBlk->succ_begin()) : nullptr;  in handleJumpintoIfImp()
1573     SrcMBB = *SrcMBB->succ_begin();  in cloneOnSideEntryTo()
1671   MachineBasicBlock *MBB1 = *MBB->succ_begin();  in removeRedundantConditionalBranch()
1672   MachineBasicBlock *MBB2 = *std::next(MBB->succ_begin());  in removeRedundantConditionalBranch()
1707     MBB->removeSuccessor(*MBB->succ_begin());  in removeSuccessor()