Guidance on working with the NVIDIA GPU back-end

Hi all,

I’m primarily a hardware person but would like to do some
compiler-architecture co-design research. Are there any good references for
the NVPTX backend?

Hi Nick,

I’ve found working near ptxas quite painful. There are various bugs open against it and the documentation for sass is sparse.

For architecture research, you may have a better time with the amdgcn backend. The target ISA is well documented, and llc generates code for it, so there’s no opaque translation blob in the way of reasoning about the system.

There’s some notes on the main llvm page and the ISA is published by AMD. Beyond that I think it’s the code and mailing list.

Cheers,

Jon