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* [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2
@ 2009-04-06 0:48 vapier at gentoo dot org
2009-04-06 0:50 ` [Bug pending/39657] " vapier at gentoo dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: vapier at gentoo dot org @ 2009-04-06 0:48 UTC (permalink / raw)
To: gcc-bugs
gcc 4.1, 4.2, and 4.4 all take less than 30 seconds to compile this file. but
gcc-4.3 can easily take more like 5 minutes.
the file comes from the preprocessed output of a file in the ruby package.
--
Summary: [4.3 Regression] compiling ruby (yacc) output takes
inordinate amount of time on x86 with -O2
Product: gcc
Version: 4.3.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: pending
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: vapier at gentoo dot org
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug pending/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2
2009-04-06 0:48 [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 vapier at gentoo dot org
@ 2009-04-06 0:50 ` vapier at gentoo dot org
2009-04-06 9:39 ` [Bug tree-optimization/39657] " rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: vapier at gentoo dot org @ 2009-04-06 0:50 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from vapier at gentoo dot org 2009-04-06 00:50 -------
Created an attachment (id=17592)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17592&action=view)
parse_.i
$ time gcc -c -O2 parse_.i
real 5m16.777s
user 5m14.586s
sys 0m1.545s
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2
2009-04-06 0:48 [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 vapier at gentoo dot org
2009-04-06 0:50 ` [Bug pending/39657] " vapier at gentoo dot org
@ 2009-04-06 9:39 ` rguenth at gcc dot gnu dot org
2009-04-22 13:31 ` [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time with PRE and large SCCs rguenth at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-04-06 9:39 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2009-04-06 09:39 -------
tree PRE : 362.75 (97%) usr 3.30 (80%) sys 366.55 (97%) wall
7515 kB ( 8%) ggc
So you can use -fno-tree-pre to work around this issue or limit the size
of the SCCs processed (with the same effect) with the --param
sccvn-max-scc-size
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|pending |tree-optimization
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-04-06 09:39:39
date| |
Target Milestone|--- |4.3.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time with PRE and large SCCs
2009-04-06 0:48 [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 vapier at gentoo dot org
2009-04-06 0:50 ` [Bug pending/39657] " vapier at gentoo dot org
2009-04-06 9:39 ` [Bug tree-optimization/39657] " rguenth at gcc dot gnu dot org
@ 2009-04-22 13:31 ` rguenth at gcc dot gnu dot org
2009-08-04 12:48 ` rguenth at gcc dot gnu dot org
2010-04-27 11:18 ` rguenth at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-04-22 13:31 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Summary|[4.3 Regression] compiling |[4.3 Regression] compiling
|ruby (yacc) output takes |ruby (yacc) output takes
|inordinate amount of time on|inordinate amount of time
|x86 with -O2 |with PRE and large SCCs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time with PRE and large SCCs
2009-04-06 0:48 [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 vapier at gentoo dot org
` (2 preceding siblings ...)
2009-04-22 13:31 ` [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time with PRE and large SCCs rguenth at gcc dot gnu dot org
@ 2009-08-04 12:48 ` rguenth at gcc dot gnu dot org
2010-04-27 11:18 ` rguenth at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-08-04 12:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2009-08-04 12:30 -------
GCC 4.3.4 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.4 |4.3.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time with PRE and large SCCs
2009-04-06 0:48 [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 vapier at gentoo dot org
` (3 preceding siblings ...)
2009-08-04 12:48 ` rguenth at gcc dot gnu dot org
@ 2010-04-27 11:18 ` rguenth at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-04-27 11:18 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2010-04-27 11:17 -------
WONTFIX on the 4.3 branch.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Known to fail|4.3.2 4.3.3 |4.3.2 4.3.3 4.3.5
Resolution| |FIXED
Target Milestone|4.3.5 |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657
^ permalink raw reply [flat|nested] 6+ messages in thread
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2009-04-06 0:48 [Bug pending/39657] New: [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 vapier at gentoo dot org
2009-04-06 0:50 ` [Bug pending/39657] " vapier at gentoo dot org
2009-04-06 9:39 ` [Bug tree-optimization/39657] " rguenth at gcc dot gnu dot org
2009-04-22 13:31 ` [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time with PRE and large SCCs rguenth at gcc dot gnu dot org
2009-08-04 12:48 ` rguenth at gcc dot gnu dot org
2010-04-27 11:18 ` rguenth at gcc dot gnu dot org
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