------- Comment #1 from pinskia at gcc dot gnu dot org 2008-08-29 04:37 -------
We can optimize this by doing either of two things:
1) change iv-opts back to produce !=
2) a) have loop-iv.c keep /s/u for the subreg
b) optimize (eq (subreg/s (reg)) (const_int 0) ) to (eq (reg) (const_int
0)).
Both will fix the issue, I can test 2 as that is easy to implement and I
already have it done, I just need to test it fully.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |pinskia at gcc dot gnu dot
|dot org |org
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-08-29 04:37:23
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37263
