[llvm-branch-commits] [clang] [llvm] release/18.x: [AArch64] Backport Ampere1B support (#81297 , #81341, and #81744) (PR #81857)

[David Green via llvm-branch-commits]

davemgreen 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?

https://github.com/llvm/llvm-project/pull/81857