[clang] [flang] [llvm] Re-land: "[AArch64] Add ability to list extensions enabled for a target" (#95805) (PR #96795)

[Jonathan Thackray via cfe-commits]

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@@ -9,28 +9,46 @@
 //
 //===----------------------------------------------------------------------===//
 
-// A SubtargetFeature that can be toggled from the command line, and therefore
-// has an AEK_* entry in ArmExtKind.
+// A SubtargetFeature that represents one or more Architecture Extensions, as
+// defined by the Arm ARM and tipically identified by a 'FEAT_*' name.
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jthackray wrote:

s/tipically/typically/

https://github.com/llvm/llvm-project/pull/96795