https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102794
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |aldyh at gcc dot gnu.org
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Jump threading really messes up the loop here ...
about to thread: path: 4 -> 6, 6 -> 7, 7 -> 3,
just threaded: path: 4 -> 9, 6 -> 7, 7 -> 3,
I don't know what else to say. Maybe move ethread after evpr?
Note with -fno-thread-jumps, evpr is able to figure out the induction variable
goes from [-100, -1] . It does look like jump threading is full on messing up
how induction variable detection works; we get two a = a +1; statement after
the jump threading improvements.
Maybe there is another bug about that case already.
