[lld] [llvm] [lld][AArch64][Build Attributes] Add support for AArch64 Build Attributes (PR #147970)

[Peter Smith via llvm-commits]

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@@ -552,8 +591,20 @@ template <class ELFT> void ObjFile<ELFT>::parse(bool ignoreComdats) {
   StringRef shstrtab = CHECK2(obj.getSectionStringTable(objSections), this);
   uint64_t size = objSections.size();
   sections.resize(size);
+
   for (size_t i = 0; i != size; ++i) {
     const Elf_Shdr &sec = objSections[i];
+    // Read GNU property section into a per-InputFile structure that will be
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smithp35 wrote:

This read of the GNU properties was necessary in SivanShani-Arm's version as BuildAttributes were being processed in parse(). Now that code has been moved to initializeSections() we can rely on initializeSections() to read the GNU properties.

TL;DR I think you should be able to remove this code so that GNU properties are only read once.

https://github.com/llvm/llvm-project/pull/147970