Deprecation/removal of nios2 target support

[Jeff Law]

On 4/18/24 9:57 AM, Joel Sherrill wrote:
> 
> 
> On Thu, Apr 18, 2024 at 10:46 AM Joseph Myers <josmyers@redhat.com 
> <mailto:josmyers@redhat.com>> wrote:
> 
>     On Wed, 17 Apr 2024, Sandra Loosemore wrote:
> 
>      > Therefore I'd like to mark Nios II as obsolete in GCC 14 now, and
>     remove
>      > support from all toolchain components after the release is made. 
>     I'm not sure
>      > there is an established process for obsoleting/removing support
>     in other
>      > components; besides binutils, GDB, and GLIBC, there's QEMU,
>     newlib/libgloss,
>      > and the Linux kernel.  But, we need to get the ball rolling
>     somewhere.
> 
>     CC:ing Arnd Bergmann regarding the obsolescence in the Linux kernel.
> 
> 
> Just an FYI that the RTEMS Project plans to drop NIOS II support based
> on what happens with the tooling.
ACK.  Just one more note to the wider audience.  I looked at QEMU's user 
mode support for nios2 on/off over the last couple years.  It never 
seemed to work well enough be able to run the GCC testsuite reliably.

As a result, my tester builds nios2 and will run the testsuite, but all 
the execution tests are only built, they're not actually run.  It's been 
fairly stable, but its not doing in-depth testing.

jeff