[llvm] [Intrinsics][AArch64] Add intrinsic to mask off aliasing vector lanes (PR #117007)

[Benjamin Maxwell via llvm-commits]

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@@ -23760,27 +23762,25 @@ across one vector loop iteration.
 Arguments:
 """"""""""
 
-The first two arguments have the same scalar integer type.
-The final two are immediates and the result is a vector with the i1 element type.
+The first two arguments have the same pointer type.
+The final one is an immediate and the result is a vector with the i1 element type.
----------------
MacDue wrote:


nit: I think it reads a little better mention all the arguments in the first sentence, then the result separately.  
```suggestion
The first two arguments are pointers and the last argument is an immediate.
The result is a vector with the i1 element type.
```

https://github.com/llvm/llvm-project/pull/117007