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

[Fangrui Song via llvm-commits]

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+//===- AARch64.h ---------------------------------------------------------===//
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MaskRay wrote:

This is unusual. There is no precedence that we added a header in Arch/

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