[Bug tree-optimization/92584] A 454.calculix optimization opportunity

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92584

--- Comment #1 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 19 Nov 2019, marxin at gcc dot gnu.org wrote:

> I noticed that the speed drop back on the trunk happened since r278281.
> Would you be interested in what loop optimization made the difference?

Well, the revs probably caused changes in (early) unrolling with the
better performance seen with less unrolling.  We know that even more
unrolling will increase performance though.

Not sure what you are asking?