[LLVMdev] Proposal for new Legalization framework

[James Courtier-Dutton]

I don't know if it helps at all, but another option might be some sort
of target CPU modelling.
I know tablegen does a lot of this, but a decompiler called boomerang
(http://boomerang.sourceforge.net/) does have some interesting
infrastructure in the area of CPU modelling.
It uses a CPU modelling language that is used to automatically
generate source code that assembles/disassembles instructions.
It might not be suitable, but I think it would be good to have a look
at boomerang to see if its CPU modelling can be used in LLVM.