[clang] [llvm] [AArch64] Make user-visible Arm architecture version strings consistent (PR #98550)

[Tomas Matheson via cfe-commits]

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@@ -106,24 +106,24 @@ def FeatureSpecRestrict : Extension<"specrestrict", "SpecRestrict", "FEAT_CSV2_2
 //===----------------------------------------------------------------------===//
 
 def FeatureLSE : ExtensionWithMArch<"lse", "LSE", "FEAT_LSE",
-  "Enable ARMv8.1 Large System Extension (LSE) atomic instructions">;
+  "Enable Armv8.1-A Large System Extension (LSE) atomic instructions">;
 
 let UserVisibleAlias = "rdma" in
 def FeatureRDM : ExtensionWithMArch<"rdm", "RDM", "FEAT_RDM",
-  "Enable ARMv8.1 Rounding Double Multiply Add/Subtract instructions",
+  "Enable Armv8.1-A Rounding Double Multiply Add/Subtract instructions",
   [FeatureNEON]>;
 
 def FeaturePAN : Extension<"pan", "PAN", "FEAT_PAN",
-  "Enables ARM v8.1 Privileged Access-Never extension">;
+  "Enable Armv8.1-A Privileged Access-Never extension">;
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tmatheson-arm wrote:

"extension" vs "instructions"

https://github.com/llvm/llvm-project/pull/98550