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

[Jonathan Thackray via llvm-commits]

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@@ -2161,6 +2153,23 @@ class SystemLXtI<bit L, string asm>
   let Inst{7-5}   = op2;
 }
 
+class SystemLXtI<bit L, string asm>
+  : BaseSystemLXtI<L, (outs),
+       (ins GPR64:$Rt, imm0_7:$op1, sys_cr_op:$Cn, sys_cr_op:$Cm,
+            imm0_7:$op2), asm>;
+
+// GCS SYSL operations preserve the old destination value when GCS is disabled
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jthackray wrote:

Thanks, fixed.

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