[lld] [llvm] [lld][AArch64][Build Attributes] Add support for converting AArch64 Build Attributes to GNU Properties (PR #131990)

[Peter Smith via llvm-commits]

https://github.com/smithp35 commented:

I've left some comments that I hope can point to less code.

If we delay the update of the andFeatures and pauthABICoreInfo to after the section parsing loop has completed then we should be able to leave the GNU properties alone.

I also think we can get away with terser error messages, until they are proven necessary. That should simplify some of the error checking code.

https://github.com/llvm/llvm-project/pull/131990