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

[Philipp Tomsich via llvm-branch-commits]

ptomsich wrote:

> > On a different note: the "+pauth" fix would be helpful in clang-18 as well, given that it brings the definition of "-march=armv8.3-a" in sync with the specification.
> 
> OK, so sounds like the +pauth change is separate but included in this PR for convenience.

@tstellar The +pauth change was included to allow a straight cherry-pick of the Ampere1B changes.  Without, we need to modify one patch (or'ing in the PAUTH bit) from what was committed onto main.

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