[Bug target/79671] [7 Regression] mapnik miscompilation on armv7hl since r235622

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79671

--- Comment #11 from ktkachov at gcc dot gnu.org ---
I'll have a look but -fno-schedule-insns "fixing things" has been known to
uncover alias analysis bugs from the GIMPLE level due to the scheduler using
the alias information to reorder memory ops