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[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107
- 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: Mon, 12 Dec 2011 10:37:51 +0000
- Subject: [Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107
- Auto-submitted: auto-generated
- References: <bug-51497-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.7.0
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-12 10:37:51 UTC ---
I can't see any vectorizer differences for the testcase in comment #2 and the
patch you cite only (should) have debuginfo changes, no changes to the produced
IL at statement level (eventually it has better type-based alias analysis).
Not confirmed.
The two else if blocks are related, not independent, independently reverting
them makes no sense.