[Bug rtl-optimization/57425] [4.8/4.9 regression] RTL alias analysis unprepared to handle stack slot sharing

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57425

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that I only recently fixed a wrong alias query from using true_dependence
to anti_dependence.  Similar issues may exist elsewhere.