[Bug tree-optimization/77605] [5/6/7 Regression] wrong code at -O3 on x86_64-linux-gnu

[spop at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77605

--- Comment #6 from Sebastian Pop <spop at gcc dot gnu.org> ---
The proposed change looks good to me.

"last_conflicts" is the max index in the conflicting functions for which there
is a dependence:

mem_access_a (conflicting_iterations_in_a (last_conflicts)) is in dependence
with
mem_access_b (conflicting_iterations_in_b (last_conflicts)).