[Bug tree-optimization/81354] [5/6 Regression] Segmentation fault in SSA Strength Reduction using -O3

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81354

--- Comment #2 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 11 Jul 2017, marxin at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81354
> 
> Martin Liška <marxin at gcc dot gnu.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>              Status|UNCONFIRMED                 |NEW
>    Last reconfirmed|                            |2017-07-11
>                  CC|                            |marxin at gcc dot gnu.org,
>                    |                            |rguenth at gcc dot gnu.org
>       Known to work|                            |4.5.4, 4.6.4, 4.7.4, 4.8.5,
>                    |                            |4.9.4, 7.1.0, 8.0
>             Summary|Segmentation fault in SSA   |[5/6 Regression]
>                    |Strength Reduction using    |Segmentation fault in SSA
>                    |-O3                         |Strength Reduction using
>                    |                            |-O3
>      Ever confirmed|0                           |1
>       Known to fail|                            |5.4.0, 6.4.0
> 
> --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
> Confirmed, fixed on trunk by r236440 and was introduced by r217914. Richi is it
> a subject of backport maybe?

No, I'm quite sure r236440 just made it latent and the bug still exists
(try a gimple FE input directly into SLSR).