[llvm-branch-commits] [llvm] [AArch64][GlobalISel] Avoid splitting loads of large vector types into individual element loads (PR #85042)

[Dhruv Chawla via llvm-branch-commits]

dc03-work wrote:

> It looks like this comes from the lowerIfMemSizeNotByteSizePow2. Custom is often best avoided unless there is not anther way, or the change is quite target-dependant.
> 
> Can we try something like this instead?
> 
> ```
>       .clampMaxNumElements(0, s8, 16)
>       .clampMaxNumElements(0, s16, 8)
>       .clampMaxNumElements(0, s32, 4)
>       .clampMaxNumElements(0, s64, 2)
>       .clampMaxNumElements(0, p0, 2)
>       .lowerIfMemSizeNotByteSizePow2()
>       ...
> ```

Yup, that works :)

https://github.com/llvm/llvm-project/pull/85042