[lld] [llvm] [lld][AArch64][Build Attributes] Add support for AArch64 Build Attributes (PR #144082)

[via llvm-commits]

================
@@ -537,6 +538,52 @@ uint32_t ObjFile<ELFT>::getSectionIndex(const Elf_Sym &sym) const {
       this);
 }
 
+template <class ELFT>
+static void
+handleAArch64BAAndGnuProperties(ObjFile<ELFT> *file, Ctx &ctx, bool hasGP,
+                                const AArch64BuildAttrSubsections &baInfo,
+                                const GnuPropertiesInfo &gpInfo) {
----------------
sivan-shani wrote:

`file` is the target.
```
file->aarch64PauthAbiCoreInfo
file->andFeatures
```
are being assigned in `handleAArch64BAAndGnuProperties`.

https://github.com/llvm/llvm-project/pull/144082