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* [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto
@ 2014-11-25 7:23 Joost.VandeVondele at mat dot ethz.ch
2014-11-25 9:18 ` [Bug middle-end/64065] " rguenth at gcc dot gnu.org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: Joost.VandeVondele at mat dot ethz.ch @ 2014-11-25 7:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
Bug ID: 64065
Summary: [5 Regression] CP2K miscompilation at -O3 -flto
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: Joost.VandeVondele at mat dot ethz.ch
Current trunk miscompiles cp2k at ' -flto=jobserver -fuse-linker-plugin
-fno-prefetch-loop-arrays -O3 -march=native -funroll-loops -ffast-math'
The last known good revision is r217995 and first bad is r218036
lto and -O3 are needed. As this involves lto, I don't think I can reduce the
problem, I might try to identify a precise commit.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
@ 2014-11-25 9:18 ` rguenth at gcc dot gnu.org
2014-11-25 13:08 ` Joost.VandeVondele at mat dot ethz.ch
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-11-25 9:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2014-11-25
Target Milestone|--- |5.0
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
That would be nice. Looking at the changes its either a latent issue uncovered
by inlining changes, my restrict change or my SCCVN change (which might uncover
a frontend bug - it did that for Java already).
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
2014-11-25 9:18 ` [Bug middle-end/64065] " rguenth at gcc dot gnu.org
@ 2014-11-25 13:08 ` Joost.VandeVondele at mat dot ethz.ch
2014-11-25 13:23 ` rguenther at suse dot de
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Joost.VandeVondele at mat dot ethz.ch @ 2014-11-25 13:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Richard Biener from comment #1)
> That would be nice. Looking at the changes its either a latent issue
> uncovered by inlining changes, my restrict change or my SCCVN change (which
> might uncover a frontend bug - it did that for Java already).
r218005: Fail
r218004: OK
Which makes it restrict changes, I guess.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
2014-11-25 9:18 ` [Bug middle-end/64065] " rguenth at gcc dot gnu.org
2014-11-25 13:08 ` Joost.VandeVondele at mat dot ethz.ch
@ 2014-11-25 13:23 ` rguenther at suse dot de
2014-11-25 13:28 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenther at suse dot de @ 2014-11-25 13:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 25 Nov 2014, Joost.VandeVondele at mat dot ethz.ch wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
>
> Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |Joost.VandeVondele at mat dot ethz
> | |.ch
>
> --- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
> (In reply to Richard Biener from comment #1)
> > That would be nice. Looking at the changes its either a latent issue
> > uncovered by inlining changes, my restrict change or my SCCVN change (which
> > might uncover a frontend bug - it did that for Java already).
>
> r218005: Fail
> r218004: OK
>
> Which makes it restrict changes, I guess.
:/
Might make it a bad interaction with the "special" support we have
for the Fortran frontend or a genuine bug. Not sure without
something more self-contained. But at least I'll think a bit more
about the LTO side of that change. Ah! A bug.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
` (2 preceding siblings ...)
2014-11-25 13:23 ` rguenther at suse dot de
@ 2014-11-25 13:28 ` rguenth at gcc dot gnu.org
2014-11-25 15:14 ` Joost.VandeVondele at mat dot ethz.ch
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-11-25 13:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 34111
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34111&action=edit
patch
Can you try this?
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
` (3 preceding siblings ...)
2014-11-25 13:28 ` rguenth at gcc dot gnu.org
@ 2014-11-25 15:14 ` Joost.VandeVondele at mat dot ethz.ch
2014-11-25 15:20 ` rguenther at suse dot de
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: Joost.VandeVondele at mat dot ethz.ch @ 2014-11-25 15:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
--- Comment #5 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Richard Biener from comment #4)
> Created attachment 34111 [details]
> patch
>
> Can you try this?
Cool, fixed!
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
` (4 preceding siblings ...)
2014-11-25 15:14 ` Joost.VandeVondele at mat dot ethz.ch
@ 2014-11-25 15:20 ` rguenther at suse dot de
2014-11-25 15:40 ` Joost.VandeVondele at mat dot ethz.ch
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenther at suse dot de @ 2014-11-25 15:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
--- Comment #6 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 25 Nov 2014, Joost.VandeVondele at mat dot ethz.ch wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
>
> --- Comment #5 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
> (In reply to Richard Biener from comment #4)
> > Created attachment 34111 [details]
> > patch
> >
> > Can you try this?
>
> Cool, fixed!
Great. Does the restrict stuff make any performance difference?
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
` (5 preceding siblings ...)
2014-11-25 15:20 ` rguenther at suse dot de
@ 2014-11-25 15:40 ` Joost.VandeVondele at mat dot ethz.ch
2014-11-25 16:43 ` rguenth at gcc dot gnu.org
2014-11-25 16:43 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: Joost.VandeVondele at mat dot ethz.ch @ 2014-11-25 15:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
--- Comment #7 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to rguenther@suse.de from comment #6)
> Does the restrict stuff make any performance difference?
Not noticeable for the particular benchmark I'm running overnight.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
` (6 preceding siblings ...)
2014-11-25 15:40 ` Joost.VandeVondele at mat dot ethz.ch
@ 2014-11-25 16:43 ` rguenth at gcc dot gnu.org
2014-11-25 16:43 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-11-25 16:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug middle-end/64065] [5 Regression] CP2K miscompilation at -O3 -flto
2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
` (7 preceding siblings ...)
2014-11-25 16:43 ` rguenth at gcc dot gnu.org
@ 2014-11-25 16:43 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-11-25 16:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64065
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Nov 25 16:43:24 2014
New Revision: 218049
URL: https://gcc.gnu.org/viewcvs?rev=218049&root=gcc&view=rev
Log:
2014-11-25 Richard Biener <rguenther@suse.de>
PR lto/64065
* lto-streamer-out.c (output_struct_function_base): Stream
last_clique field.
* lto-streamer-in.c (input_struct_function_base): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lto-streamer-in.c
trunk/gcc/lto-streamer-out.c
^ permalink raw reply [flat|nested] 10+ messages in thread
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2014-11-25 7:23 [Bug middle-end/64065] New: [5 Regression] CP2K miscompilation at -O3 -flto Joost.VandeVondele at mat dot ethz.ch
2014-11-25 9:18 ` [Bug middle-end/64065] " rguenth at gcc dot gnu.org
2014-11-25 13:08 ` Joost.VandeVondele at mat dot ethz.ch
2014-11-25 13:23 ` rguenther at suse dot de
2014-11-25 13:28 ` rguenth at gcc dot gnu.org
2014-11-25 15:14 ` Joost.VandeVondele at mat dot ethz.ch
2014-11-25 15:20 ` rguenther at suse dot de
2014-11-25 15:40 ` Joost.VandeVondele at mat dot ethz.ch
2014-11-25 16:43 ` rguenth at gcc dot gnu.org
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