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

[Peter Smith via llvm-commits]

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@@ -207,6 +209,51 @@ static void updateSupportedARMFeatures(Ctx &ctx,
   ctx.arg.armHasThumb2ISA |= thumb && *thumb >= ARMBuildAttrs::AllowThumb32;
 }
 
+struct AArch64BuildAttrSubsections {
+  struct PauthSubSection {
+    unsigned tagPlatform = 0;
+    unsigned tagSchema = 0;
+  } pauth;
+  struct FAndBSubSection {
+    unsigned tagBTI = 0;
+    unsigned tagPAC = 0;
+    unsigned tagGCS = 0;
+  } fAndB;
+};
+
+static AArch64BuildAttrSubsections
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smithp35 wrote:

Could be worth investigating to see whether this can be moved to Arch/AArch64.cpp . That's not an easy decision to make, as it moves code only used here into another file, but it stops this file getting so big with AArch64 specific code.

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