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[Bug tree-optimization/67323] Use non-unit stride loads by preference when applicable


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67323

--- Comment #11 from Michael Collison <michael.collison at linaro dot org> ---
Andrew,

It may be the case that is not a win on all microarchitectures however I think
we should allow the vectorizer to (optionally) generate the vld3 and deal with
the differences via the cost models.

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