Cranelift: arm32 support

- What is the feature or code improvement you would like to do in Cranelift?
I would like to add ARM support by implementing ARM (not Thumb) encodings/recipes and abi. I am especially interested in armv7 little endian support.
- What is the value of adding this in Cranelift?
Emit code that could run on ARM architecture.
- Do you have an implementation plan, and/or ideas for data structures or
algorithms to use?
At first i want to add basic integer operations followed by floating point instructions. I thought about implementing the latter using VFP rather than the NEON extension (As far as I know NEON does not support double precision). As for calling convention, I would like to implement AAPCS.
I already have some code that i hope to push after necessary modifications.
- Have you considered alternative implementations? If so, how are they better
or worse than your proposal?
No, but I am open to suggestions.