https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80917
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-05-30
CC| |rguenth at gcc dot gnu.org
Component|rtl-optimization |middle-end
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
We don't do conditional bit-tracking, it would be possible to use the CCP code
to track a separate bit lattice in [E]VRP whose propagators are more capable.
On RTL I think we do not track nonzero bits across BBs but I'm not sure.
