http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37516
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2012-02-23
AssignedTo|unassigned at gcc dot |pinskia at gcc dot gnu.org
|gnu.org |
Ever Confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-23
08:42:01 UTC ---
I have an idea on how to fix this.
basically:
~(C - X)
is the same as:
~ - (X - C)
which then can be simplified to
X - (C+1)
This should be done on both the tree level (on the pinskia/treecombine branch
in tree-ssa-fold.c) and the rtl level in simplify-rtx.c.
