[Bug ipa/84658] [7/8 Regression] -O3 -fmerge-all-constants causes incorrect for-each loop generation.

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84658

--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
Just having chat with Honza and he is curious why IPA passes should maintain
points-to-sets info as it's rebuild in pass_build_alias quite soon in post IPA
passes? Another question is why the pass_rebuild_alias isn't the first one and
is sitting after CCP?

Isn't also possible to release all points-to-sets before IPA passes? That can
save some memory.