--- Comment #1 from ubizjak at gmail dot com 2009-04-26 18:43 ---
There are a couple of possible candidates in this range:
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144812
Log:
2009-03-12 Vladimir Makarov
PR debug/39432
* ira-int.h (struct allocno): Fix c
--- Comment #2 from ubizjak at gmail dot com 2009-04-27 08:16 ---
(In reply to comment #0)
> (same .i file, same instructions for reproducing, same compiler options, same
> everything)
I guess that this is direct.i compiled with -O1?
Trunk, revision: 146825 -O1 on x86_64 linux gives:
--- Comment #3 from lucier at math dot purdue dot edu 2009-04-27 15:07
---
Subject: Re: 96% performance regression in floating
point code; part of the problem started 2009/03/12-13
On Sun, 2009-04-26 at 18:43 +, ubizjak at gmail dot com wrote:
>
>
> --- Comment #1 from ubiz
--- Comment #4 from lucier at math dot purdue dot edu 2009-04-27 15:11
---
Subject: Re: 96% performance regression in floating
point code; part of the problem started 2009/03/12-13
On Mon, 2009-04-27 at 08:16 +, ubizjak at gmail dot com wrote:
>
>
> --- Comment #2 from ubiz
--- Comment #5 from pinskia at gcc dot gnu dot org 2009-04-27 15:26 ---
This is by design -O1 is way slower than -O2 now.
--
pinskia at gcc dot gnu dot org changed:
What|Removed |Added
---
--- Comment #6 from lucier at math dot purdue dot edu 2009-04-27 15:32
---
Subject: Re: 96% performance regression in floating
point code; part of the problem started 2009/03/12-13
On Mon, 2009-04-27 at 15:26 +, pinskia at gcc dot gnu dot org wrote:
> This is by design -O1 is wa
--- Comment #7 from lucier at math dot purdue dot edu 2009-04-27 15:35
---
Subject: Re: 96% performance regression in floating
point code; part of the problem started 2009/03/12-13
On Mon, 2009-04-27 at 15:32 +, lucier at math dot purdue dot edu
wrote:
> On Mon, 2009-04-27 at 1
--- Comment #8 from lucier at math dot purdue dot edu 2009-04-27 16:29
---
I hadn't noticed before that Andrew had marked it as "RESOLVED INVALID".
I'm reopening it, as I believe that resolving it as INVALID should require a
more general discussion than a one-line dismissal of the bug.
--- Comment #9 from ubizjak at gmail dot com 2009-04-27 18:21 ---
Following patch should fix the performance hit with -O1:
--cut here--
Index: ira-conflicts.c
===
--- ira-conflicts.c (revision 146825)
+++ ira-conflicts.
