[PATCH] D132190: [AArch64][GlobalISel] Legalize G_SHUFFLE_VECTOR with different lengths

[Amara Emerson via Phabricator via llvm-commits]

aemerson added a comment.

In D132190#3758013 <https://reviews.llvm.org/D132190#3758013>, @foad wrote:

>> this seems to be something that needs to be done generically for all targets
>
> It seems like something that could be available in LegalizerHelper for targets that want to use it. I don't see why it is necessarily required for **all** targets.

In that case I wonder if this could be done as a `Lower` action as an intermediate step before the legalizer tries to scalarize the shuffle.


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https://reviews.llvm.org/D132190