[clang] [AArch64][SME] Fix bug on SMELd1St1 (PR #118109)

[via cfe-commits]

wwwatermiao wrote:

> > I thought that this fix will automatically pull from main to other branch at some tiime
> 
> main is the basis for all future release branches (20.x and later), but we don't automatically pull fixes into release branches that are already created (19.x).
> 
> See https://llvm.org/docs/GitHub.html#backporting-fixes-to-the-release-branches for backporting instructions.

Thank you for your reply, i'll cherry-pick to these branch after this patch merging.

https://github.com/llvm/llvm-project/pull/118109