[llvm] [DAG][AArch64] Ensure that ResNo is correct for uses of Ptr when considering postinc. (PR #164810)

[via llvm-commits]

AZero13 wrote:

> We might be looking at a different use, for example in the uses of a i32,i64,ch preindex load.
> 
> Fixes #164775


> We might be looking at a different use, for example in the uses of a i32,i64,ch preindex load.
> 
> Fixes #164775

Are them being the same user a preconditon of this optimization?

https://github.com/llvm/llvm-project/pull/164810