[PATCH] D78486: [SystemZ] Expand vector zero-extend into a shuffle.

[Jonas Paulsson via Phabricator via llvm-commits]

jonpa added a comment.

> So now I'm wondering instead: why does your new code ever trigger in the first place; why isn't this already handled in GeneralShuffle::add?

I think that be two different cases, where my handling is addressing a *new* permute resulting from combining two operands, when trying to combine (unpack) a third source operand with that first (new) permute.


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  https://reviews.llvm.org/D78486/new/

https://reviews.llvm.org/D78486