[llvm-dev] New LLVM backend for Renesas RL78 MCU (original) (raw)

Sebastian Perta via llvm-dev llvm-dev at lists.llvm.org
Tue May 26 11:27:10 PDT 2020

Hi David,

Ah, so this is a commercially backed project? Initially it wasn’t. I started to do this in my own free time and after I got something which I could demonstrate I can be much better than what we currently have with GCC it became part of my day to day job.

But relatively small? (are you the only engineer working on this?) Yes I’m the only one working on this.

It's never a clear-cut thing and I don't mean to pry (there's a weird balance between having some context for why these things >>are being worked on, how likely they are to continue to be invested in, etc - versus accepting that companies have their own >>priorities, some private objectives, etc). No worries I’m very happy to provide any information necessary. I really want the port to accepted upstream. RL78 MCUs are part of the Renesas Product Longevity program https://www.renesas.com/eu/en/support/products-common/product-longevity-program-plp.html. The majority of current RL78 devices have the termination date set as “December 2033”, and a few “March 2026”. Also RL78 is under active development: new devices (which a much later termination date) are being released all the time. So this is very likely to continue for a very long time.

Best Regards, Sebastian

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