ptomsich wrote:
> > Is this fixing a regression introduced in Clang 18? I'm wondering why the
> > backport is needed in the first place, as this seems to be making
> > potentially significant changes during the RC ("Make +pauth enabled in
> > Armv8.3-a by default").
>
> It is adding new CPU support to clang 18, specifically the ampere-1b. I'm not
> sure what is considered acceptable at this stage. It is up to the release
> maintainers whether they want to accept it. On a technical level I believe it
> should be OK, but if only regressions are being fixed at this stage then it
> might be better to wait for clang-19. I'm not sure how much @ptomsich wanted
> to get this into clang-18?
Getting this into clang-18 is highly desirable to ensure it recognizes
"-mcpu=ampere1b" and emits the CSSC instructions for the core. I would prefer
not to wait for clang-19, even though we ended up late in the cycle.
https://github.com/llvm/llvm-project/pull/81857
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