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[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Dec 2008 20:56:16 -0000
- Subject: [Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures
- References: <bug-36792-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #14 from rguenth at gcc dot gnu dot org 2008-12-10 20:56 -------
Which is not vectorized because PRE doesn't move the invariant
D.2067_11 = a_9(D) == b_10(D);
out of the loop. If you make LIM do it (--param lim-expensive=1) the loop
is vectorized again.
I have a patch.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|REOPENED |ASSIGNED
Last reconfirmed|2008-07-10 14:59:59 |2008-12-10 20:56:16
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792