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

[Aaron Ballman via llvm-branch-commits]

AaronBallman 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").

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