[Bug tree-optimization/87074] [8/9 Regression] Vectorization bug: O3 result differ from O2

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87074

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |matz at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There is a clear dependency between different iterations of the outer loop, the
b in second and following iterations depends on the c[e] computed by the
earlier iteration, so I think unrolljam pass should punt somewhere.  CCing
author.