[clang] [llvm] [AArch64] Merge duplicate extension information. (PR #92319)

[Alexandros Lamprineas via llvm-commits]

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@@ -94,19 +94,21 @@ static void EmitARMTargetDef(RecordKeeper &RK, raw_ostream &OS) {
     else
       OS << ", \"" << Alias << "\"";
     OS << ", AArch64::" << AEK;
-    if (AEK == "AEK_NONE") {
+    auto Name = Rec->getValueAsString("Name");
+    if (Name.empty()) {
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labrinea wrote:

No, for example all the features I have fused  (FEAT_DPB, FEAT_DPB2, FEAT_FLAGM2, FEAT_FRINTTS, FEAT_RCPC2) as well as BTI, are FMVOnly and still have a valid +/- TargetFeatureName.

https://github.com/llvm/llvm-project/pull/92319