[Bug tree-optimization/113441] [14 Regression] Fail to fold the last element with multiple loop since g:2efe3a7de0107618397264017fb045f237764cc7

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113441

--- Comment #39 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
(In reply to Richard Sandiford from comment #38)
> (In reply to Richard Biener from comment #37)
> > Even more iteration looks bad.  I do wonder why when gather can avoid
> > peeling for GAPs using load-lanes cannot?
> Like you say, we don't realise that all the loads from array3[i] form a
> single group.
Oops, sorry, I shouldn't have gone off memory.  So yeah, it's array1[] where
that happens, not array3[].  The reason we don't use load-lanes is that we
don't have load-lane instructions for smaller elements in larger containers, so
we're forced to use load-and-permute instead.