[clang] [llvm] [AArch64] Add ability to list extensions enabled for a target (PR #95805)

[Tomas Matheson via llvm-commits]

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@@ -114,12 +114,14 @@ using ExtensionBitset = Bitset<AEK_NUM_EXTENSIONS>;
 // SubtargetFeature which may represent either an actual extension or some
 // internal LLVM property.
 struct ExtensionInfo {
-  StringRef Name;                 // Human readable name, e.g. "profile".
+  StringRef UserVisibleName;      // Human readable name used in -march/-cpu, e.g. "profile"
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tmatheson-arm wrote:

This is also what is used in the `target` attribute.

https://github.com/llvm/llvm-project/pull/95805