[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|NEW |ASSIGNED

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 --- Comment #8 from Richard Guenther rguenth at gcc dot gnu.org 2011-12-14 15:31:31 UTC --- Author: rguenth Date: Wed Dec 14 15:31:24 2011 New Revision: 182336 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=182336 Log: 2011-12-14 Richard

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 --- Comment #10 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-12-14 15:36:19 UTC --- Created attachment 26080 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26080 patch candidate ... The patch fixes this pr without any visible

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

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 ---

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 --- Comment #4 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-12-12 13:09:49 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

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 Richard Guenther rguenth at gcc dot gnu.org changed: What|Removed |Added Status|UNCONFIRMED |NEW Last

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 --- Comment #6 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-12-12 15:17:19 UTC --- I can't reproduce anything with the testcase from comment #2. Sorry for the confusion. The code in comment #2 was here only to show the actual code

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 --- Comment #2 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-12-11 14:07:59 UTC --- Upon further looking at the assembly, I have found that the seven loops in spmmult are all vectorized without -flto, while none of them are with -flto.

[Bug lto/51497] [4.7 Regression] The run time for the polyhedron test nf.f90 is ~10% slower with -flto after revision 182107

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51497 --- Comment #1 from Dominique d'Humieres dominiq at lps dot ens.fr 2011-12-10 18:39:15 UTC --- The profiles are without -flto: + 34.6%, nf3dprecon.2105.constprop.1, a.out | 34.6%, nf2dprecon.2116, a.out 33.5%, spmmult.2139, a.out + 29.8%,