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* [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx
@ 2014-02-22 14:24 trippels at gcc dot gnu.org
2014-02-22 14:24 ` [Bug rtl-optimization/60317] " trippels at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: trippels at gcc dot gnu.org @ 2014-02-22 14:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
Bug ID: 60317
Summary: [4.9 Regression] find_hard_regno_for compile time hog
in libvpx
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: vmakarov at gcc dot gnu.org
While building Firefox I've noticed that there is a file from libvpx
that takes almost 2 minutes to compile on my machine:
% time gcc -O3 -c sad_c.i
gcc -O3 -c sad_c.i 111.05s user 0.78s system 99% cpu 1:52.10 total
phase opt and generate : 110.92 (100%) usr 0.43 (100%) sys 111.43 (100%)
wall 168173 kB (99%) ggc
Perf shows:
87.86% cc1 cc1 [.] find_hard_regno_for(int, int*, int)
- find_hard_regno_for(int, int*, int)
99.77% 0x10101010101
0.72% cc1 cc1 [.] find_base_term(rtx_def*)
It's fine with -O2 or 4.8.3:
% time gcc -O2 -c sad_c.i
gcc -O2 -c sad_c.i 0.25s user 0.02s system 99% cpu 0.273 total
phase opt and generate : 0.23 (96%) usr 0.02 (100%) sys 0.25 (93%) wall
8876 kB (84%) ggc
% time /usr/x86_64-pc-linux-gnu/gcc-bin/4.8.3/gcc -w -O3 -c sad_c.i
/usr/x86_64-pc-linux-gnu/gcc-bin/4.8.3/gcc -w -O3 -c sad_c.i 0.94s user 0.02s
system 99% cpu 0.964 total
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
@ 2014-02-22 14:24 ` trippels at gcc dot gnu.org
2014-02-22 14:27 ` trippels at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: trippels at gcc dot gnu.org @ 2014-02-22 14:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 32200
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32200&action=edit
preprocessed testcase
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
2014-02-22 14:24 ` [Bug rtl-optimization/60317] " trippels at gcc dot gnu.org
@ 2014-02-22 14:27 ` trippels at gcc dot gnu.org
2014-02-23 10:50 ` trippels at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: trippels at gcc dot gnu.org @ 2014-02-22 14:27 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog
Last reconfirmed| |2014-2-22
Known to work| |4.7.3, 4.8.3
Target Milestone|--- |4.9.0
Known to fail| |4.9.0
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
2014-02-22 14:24 ` [Bug rtl-optimization/60317] " trippels at gcc dot gnu.org
2014-02-22 14:27 ` trippels at gcc dot gnu.org
@ 2014-02-23 10:50 ` trippels at gcc dot gnu.org
2014-02-24 11:35 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: trippels at gcc dot gnu.org @ 2014-02-23 10:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed|2014-02-22 00:00:00 |2014-02-23
CC| |congh at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r204229.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
` (2 preceding siblings ...)
2014-02-23 10:50 ` trippels at gcc dot gnu.org
@ 2014-02-24 11:35 ` rguenth at gcc dot gnu.org
2014-02-24 11:36 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-02-24 11:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
This whole thing updating keys and such should use a proper lattice of
per-cgraph and per-edge node sizes/times which can be updated with a
less ad-hoc algorithm than the current one which easily and completely explodes
... :/ (and the 'cache' is completely ineffective during the update process)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
` (3 preceding siblings ...)
2014-02-24 11:35 ` rguenth at gcc dot gnu.org
@ 2014-02-24 11:36 ` rguenth at gcc dot gnu.org
2014-02-25 20:35 ` vmakarov at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-02-24 11:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> This whole thing updating keys and such should use a proper lattice of
> per-cgraph and per-edge node sizes/times which can be updated with a
> less ad-hoc algorithm than the current one which easily and completely
> explodes ... :/ (and the 'cache' is completely ineffective during the
> update process)
Err - wrong bug
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
` (4 preceding siblings ...)
2014-02-24 11:36 ` rguenth at gcc dot gnu.org
@ 2014-02-25 20:35 ` vmakarov at gcc dot gnu.org
2014-02-26 7:13 ` trippels at gcc dot gnu.org
2014-02-26 10:30 ` rguenth at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: vmakarov at gcc dot gnu.org @ 2014-02-25 20:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Tue Feb 25 20:34:44 2014
New Revision: 208155
URL: http://gcc.gnu.org/viewcvs?rev=208155&root=gcc&view=rev
Log:
2014-02-25 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/60317
* params.def (PARAM_LRA_MAX_CONSIDERED_RELOAD_PSEUDOS): New.
* params.h (LRA_MAX_CONSIDERED_RELOAD_PSEUDOS): New.
* lra-assigns.c: Include params.h.
(spill_for): Use LRA_MAX_CONSIDERED_RELOAD_PSEUDOS as guard for
other reload pseudos considerations.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-assigns.c
trunk/gcc/params.def
trunk/gcc/params.h
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
` (5 preceding siblings ...)
2014-02-25 20:35 ` vmakarov at gcc dot gnu.org
@ 2014-02-26 7:13 ` trippels at gcc dot gnu.org
2014-02-26 10:30 ` rguenth at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: trippels at gcc dot gnu.org @ 2014-02-26 7:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Fixed, thanks.
% time gcc -c -O3 sad_c.i
gcc -c -O3 sad_c.i 12.72s user 0.11s system 99% cpu 12.837 total
(Vladimir, I don't see any message on gcc-patches about your fix.)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug rtl-optimization/60317] [4.9 Regression] find_hard_regno_for compile time hog in libvpx
2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
` (6 preceding siblings ...)
2014-02-26 7:13 ` trippels at gcc dot gnu.org
@ 2014-02-26 10:30 ` rguenth at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-02-26 10:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60317
Bug 60317 depends on bug 60343, which changed state.
Bug 60343 Summary: [4.9 Regression] r208155 breaks bootstrap
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60343
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2014-02-26 10:30 UTC | newest]
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2014-02-22 14:24 [Bug rtl-optimization/60317] New: [4.9 Regression] find_hard_regno_for compile time hog in libvpx trippels at gcc dot gnu.org
2014-02-22 14:24 ` [Bug rtl-optimization/60317] " trippels at gcc dot gnu.org
2014-02-22 14:27 ` trippels at gcc dot gnu.org
2014-02-23 10:50 ` trippels at gcc dot gnu.org
2014-02-24 11:35 ` rguenth at gcc dot gnu.org
2014-02-24 11:36 ` rguenth at gcc dot gnu.org
2014-02-25 20:35 ` vmakarov at gcc dot gnu.org
2014-02-26 7:13 ` trippels at gcc dot gnu.org
2014-02-26 10:30 ` rguenth at gcc dot gnu.org
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