[llvm] [AArch64][llvm] Remove `+d128` gating on `sysp`, `msrr` and `mrrs` instructions (PR #178912)

[via llvm-commits]

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@@ -110,7 +110,7 @@ rcwswp x0, x1, [x2]
 // CHECK: rcwswp x0, x1, [x2]
 
 // This needs to come after `.arch_extension the` as it uses an instruction that
-// requires both the and d128
+// requires the extension. `.arch_extension d128` is needed for rcwcasp.
 .arch_extension d128
 sysp #0, c2, c0, #0, x0, x1
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Lukacma wrote:

I still see the sysp instruction here. Maybe you have forgotten to add the filechange ?

https://github.com/llvm/llvm-project/pull/178912