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[Bug target/38306] [4.4/4.5/4.6/4.7 Regression] 15% slowdown w.r.t. 4.3 of computational kernel on some architectures
- From: "Joost.VandeVondele at pci dot uzh.ch" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 13 Sep 2011 07:59:06 +0000
- Subject: [Bug target/38306] [4.4/4.5/4.6/4.7 Regression] 15% slowdown w.r.t. 4.3 of computational kernel on some architectures
- Auto-submitted: auto-generated
- References: <bug-38306-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38306
--- Comment #27 from Joost VandeVondele <Joost.VandeVondele at pci dot uzh.ch> 2011-09-13 07:59:06 UTC ---
(In reply to comment #25)
> 2) Then find the earliest optimization pass where they differ (you may even use
> diff to make this faster).
The first point where things differ for PD2VAL is
pr38306_xxx.f90.057t.cunrolli
afterwards, everything seems fully different.