[LLVMdev] Encoding instructions with inconsistent formats

[Tim Northover]

Hi Dylan,

> I am able to use it in the place of PTRREGS in the definition of the LD
> instruction, but if I use it in an instruction matching pattern, compilation
> fails with the error "Unknown leaf kind: LDSTPtrReg:i16:$ptrreg".

I think  it should work if you just use "i16:$ptrreg" in the pattern
rather than specifying the new operand type: "(set GPR8:$reg, (load
i16:$ptrreg))".

Cheers.

Tim.