[lld] [lld][GNU Properties] Refactor storage of PAuth ABI core info (PR #141920)

[via llvm-commits]

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@@ -139,6 +140,11 @@ enum class GcsPolicy { Implicit, Never, Always };
 // For some options that resemble -z bti-report={none,warning,error}
 enum class ReportPolicy { None, Warning, Error };
 
+struct AArch64PauthAbiCoreInfo {
+  uint64_t aarch64PauthAbiPlatform;
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sivan-shani wrote:

The PAuth ABI spec defines both Platform Identifier and Version Number as 64-bit values:
https://github.com/ARM-software/abi-aa/blob/main/pauthabielf64/pauthabielf64.rst#core-information

While the actual values may use fewer bits in practice, using uint64_t is necessary to match the specification.

https://github.com/llvm/llvm-project/pull/141920