[Bug tree-optimization/100173] telecom/viterb00data_1 has 16.92% regression compared O2 -ftree-vectorize -fvect-cost-model=very-cheap to O2 on CLX/ICX, 9% regression on znver3

"pinskia at gcc dot gnu.org via Gcc-bugs" <[email protected]> Tue, 04 Aug 2026 17:08:59 +0000

Newsgroups	gmane.comp.gcc.bugs
Message-ID	<[email protected]/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100173

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #10 from Drea Pinski <pinskia at gcc dot gnu.org> ---
The trunk is now able to sink the loads and we should get decent performance
now at -O2 (-O3 is faster because of the vectorization with the aliasing
check).