[llvm] [AArch64][llvm] Redefine some insns as an alias of `SYS` (PR #187004)

[Jonathan Thackray via llvm-commits]

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@@ -1014,6 +1047,48 @@ bool AArch64InstPrinter::printSysAlias(const MCInst *MI,
         return false;
       }
     } break;
+    // GCS aliases.
+    case 7: {
+      if (!(STI.hasFeature(AArch64::FeatureAll) ||
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jthackray wrote:

Done

https://github.com/llvm/llvm-project/pull/187004