https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89570

--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 5 Mar 2019, jakub at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89570
> 
> --- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> That wouldn't help at all, the propagation in this PR is in forwprop4, after
> vector lowering.

The only way would be to make expanders have fallback code.  But the
reason for only allowing target supported vector GIMPLE is to avoid
pessimizing code generation - in the case of compares/conds the
chance is we end up with duplicated work.

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