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[Bug rtl-optimization/17387] Redundant instructions in loop optimization
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 May 2007 20:32:16 -0000
- Subject: [Bug rtl-optimization/17387] Redundant instructions in loop optimization
- References: <bug-17387-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #22 from steven at gcc dot gnu dot org 2007-05-25 20:32 -------
With the current implementation of SEE it is almost impossible to make it work
on x86. You have to take into account the liveness of the flags register, and
there currently is no way to include that in the dataflow equations. Maybe
someone else knows how to do this...
--
steven at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|steven at gcc dot gnu dot |unassigned at gcc dot gnu
|org |dot org
Status|ASSIGNED |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17387