llvm dev - Dec 2012 - [LLVMdev] BuildMI declarations inconsistency?

Why do these two guys take a pointer to the basic block, whereas all 
other BuildMI functions take a reference?  They are not checking for 
null or anything and I didn't see any potential declaration conflicts. 
Am I missing something?  Is there a reason for this?

inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
                                    DebugLoc DL,
                                    const MCInstrDesc &MCID) {
   return BuildMI(*BB, BB->end(), DL, MCID);
}

inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
                                    DebugLoc DL,
                                    const MCInstrDesc &MCID,
                                    unsigned DestReg) {
   return BuildMI(*BB, BB->end(), DL, MCID, DestReg);
}


-Krzysztof


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