[llvm-dev] 128bit binary instruction format?

[Ruiling Song via llvm-dev]

Hi,

The ISA I am working on is always encoded in 128bit binary format. I find
that getBinaryCodeForInst() only return at most 64bit Encoding.
So, I think the proper way to encode the instructions is to write the
XXXMCCodeEmitter by myself instead of automatic generation. right?

Is there any guideline/suggestion on how to write the XXXMCCodeEmitter
using current LLVM infrastructure? I want to use the existing
classes/functions in backend infrastructure as much as I can.

Thanks!
Ruiling
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