[LLVMdev] 2 versions of printInstruction()

[Triple Yang]

Hi, LLVMers,

I notice that there are two versions of printInstruction() generated
by tablegen:

(1) XXXInstPrinter::printInstruction(const MCInst *MI, raw_ostream
&os), like for X86.
(2) XXXAsmPrinter::printInstruction(const MachineInstr *MI,
raw_ostream &os), like for Sparc.

I guess Sparc backend directly transform MachineInstr objects into
ostream, while X86 backend convert MachineInstr into MCInst first,
then prints out MCInst as text.

So, why does tablegen result in such differences?

Best regards.

-- 
杨勇勇 (Yang Yongyong)