[llvm] [AArch64] Define GCS operations as SYS and SYSL aliases (PR #203564)

[Jonathan Thackray via llvm-commits]

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@@ -2150,8 +2150,8 @@ class SystemXtI<string asm>
 }
 
 class SystemLXtI<bit L, string asm>
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jthackray wrote:

Thanks, done.

https://github.com/llvm/llvm-project/pull/203564