Yes, I sent mails to ATMEL/Microchip and the Arduino company. I only received a
"maybe mail" from the Arduino company, no answer from ATMEL/Microchip.
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I think a fundraiser hosted at maker communities like Element14, HacksterIO, Hackaday, Circuitdigest etc could work. These spaces are populated with people who use Arduinos for interesting applications, and they may be interested in supporting their development.
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Does anyone remember the name of the guy from Atmel who spearheaded the AVR gcc effort? Eric something if memory serves.
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GCC upstream has officially started with the GCC 11 development cycle which will eventually lead to the removal of all backends which are still using the cc0 register representation [1].
Has anybody talked to ATMEL about contributing to this.
I fear this will end up falling off the table and in a few months users will be angry when Ubuntu 22.04 will no longer be able to compile AVR code out of the box.
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if Atmel contributed expertise and work to avr-gcc and Microchip doesn't keep it up, that would effectively be a huge downgrade.
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3) reports are that newer versions of avr-gcc produce “worse” code.
The problem is in the middle-end, and problems there that affect targets like avr will not be fixed
Hi!
With GCC 10 being released, GCC upstream has officially started with the GCC 11
development cycle which will eventually lead to the removal of all backends which
are still using the cc0 register representation [1].
In order to save the backend, I have started a Bountysource campaign [2] similar
to the one I created for m68k [3].
While the Bountysource campaign for m68k was successful and lead to the conversion
of the backend to MODE_CC, the AVR campaign has not gained enough supporters to
collect enough money to motivate a developer to work on the task - although some
developers have shown interest in it [4,5].
So, if anyone in the Arduino community is interested in keeping AVR support in GCC
in the future, please consider making a small donation to the Bountysource
campaign.
Adrian
> [1] https://gcc.gnu.org/legacy-ml/gcc-patches/2019-09/msg01256.html
> [2] https://www.bountysource.com/issues/84630749-avr-convert-the-backend-to-mode_cc-so-it-can-be-kept-in-future-releases
> [3] https://www.bountysource.com/issues/80706251-m68k-convert-the-backend-to-mode_cc-so-it-can-be-kept-in-future-releases
> [4] https://gcc.gnu.org/pipermail/gcc/2020-April/thread.html#402
> [5] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92729#c2
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