[Bug tree-optimization/18501] [13/14/15/16 Regression] Missing 'used uninitialized' warning (CCP)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501

--- Comment #106 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #90)
> At Cauldron, Vladislav Ivanishin said in his lightning talk that ISP RAS has
> a patch to fix this.

https://www.youtube.com/watch?v=xa-0oXkiPUo
https://gcc.gnu.org/wiki/cauldron2019#cauldron2019talks.Tweaking_the_compiler_for_fewer_false_negatives_in_Wuninitialized