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

[Jonathan Thackray via llvm-commits]

================
@@ -1071,6 +1154,13 @@ bool AArch64InstPrinter::printSysAlias(const MCInst *MI,
   if (NotXZR && !NeedsReg && !OptionalReg)
     return false;
 
+  if (Name.empty()) {
----------------
jthackray wrote:

Thanks, I've simplified this.

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