[Bug rtl-optimization/46888] missed optimization of zero_extract with constant inputs

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46888

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-10-12 08:50:55 UTC ---
Oh with my current patch, we are able to remove at least one bfi, the first
one.