Compilation fail with arm-gcc-none-eabi 12.2.0

[arm-software]

Compilation fail with arm-gcc-none-eabi 12.2.0

[felix-johnny]

Link to fix: https://gcc.gnu.org/pipermail/gcc-patches/2022-December/607963.html

[felix-johnny]

@asimov-aiz It does look like an error in the compiler. I've raised an internal ticket to the tools team on it for now. I'll update here when there is progress on that.

As a way forward, I see two options.

1. CMSIS-NN disables MVE optimizations for softmax_s8 or
2. Avoid the beta release of 12.2.0 and use production version 11.3 and build for Cortex-M55 instead. You can use the binary/library from that for your project.

Since 12.2.0 is not a production release, my suggestion is to go with option 2. If you have access to armclang on the other hand, you can use that with cortex-m85 as the cpu option.

[felix-johnny]

@asimov-aiz Thanks for reporting this. We'll have a look.

[felix-johnny]

@asimov-aiz .. The workaround for this is now delivered in CMSIS-NN. The fix in the toolchain is however planned for the next release and is not part of the released toolchain on Dec 22. With this, I'll close the ticket and do get back for any clarifications regarding this or anything else!

/Felix