[clang] [llvm] [LLVM][Clang][AArch64] Implement AArch64 build attributes (PR #118771)

[via llvm-commits]

sivan-shani wrote:

- Fixed according to comments above
- Fixed some errors
- Ability to add attributes numerically added
- Tests for pauthabi platform/version in codegen
- Tests for assembly parser errors
- Not added: Tests for attributes with NTBS values - currently all attributes takes only ULEB128 as values.

https://github.com/llvm/llvm-project/pull/118771