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[Bug tree-optimization/49851] IVOPTs makes a mess out of polyhedron air derivx and derivy
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 26 Jul 2011 13:59:32 +0000
- Subject: [Bug tree-optimization/49851] IVOPTs makes a mess out of polyhedron air derivx and derivy
- Auto-submitted: auto-generated
- References: <bug-49851-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49851
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-26 13:59:26 UTC ---
AIR spends 86% of its time in DERIV[XY] (for ICC), 78% of its time there for
GCC.
The performance difference also reproduces when not inlining DERIV[XY] at all
(though it's slightly less of a difference - GCC doesn't care).