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* [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory
@ 2005-09-17 15:52 rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 17:07 ` [Bug tree-optimization/23928] " rguenth at tat dot physik dot uni-tuebingen dot de
` (5 more replies)
0 siblings, 6 replies; 8+ messages in thread
From: rguenth at tat dot physik dot uni-tuebingen dot de @ 2005-09-17 15:52 UTC (permalink / raw)
To: gcc-bugs
The tramp3d-v4.cpp testcase with flatten (aka leafify) enabled requires
excessive amount of memory for the compile, if exceptions are not
disabled via -fno-exceptions.
Compiling with -O2 -Dleafify=flatten -fno-exceptions mainline needs
at max. 670MB of ram, while omitting -fno-exceptions it tops out at
2.7GB(!).
Testing was done on x86_64 with 8GB ram to avoid hitting swap. ggc
params are --param ggc-min-expand=100 --param ggc-min-heapsize=131072.
The tramp3d-v4.cpp testcase is available from
http://www.tat.physik.uni-tuebingen.de/~rguenth/gcc/tramp3d-v4.cpp.gz
-ftime-report from the -fexceptions run shows
Execution times (seconds)
garbage collection : 19.16 ( 4%) usr 1.10 (11%) sys 20.33 ( 4%) wall
0 kB ( 0%) ggc
...
integration : 188.01 (41%) usr 2.53 (26%) sys 191.29 (40%) wall
842654 kB (24%) ggc
...
tree CFG cleanup : 10.57 ( 2%) usr 0.05 ( 1%) sys 10.69 ( 2%) wall
33061 kB ( 1%) ggc
tree VRP : 5.18 ( 1%) usr 0.14 ( 1%) sys 5.14 ( 1%) wall
40349 kB ( 1%) ggc
tree copy propagation : 5.46 ( 1%) usr 0.09 ( 1%) sys 5.56 ( 1%) wall
5073 kB ( 0%) ggc
tree store copy prop : 1.10 ( 0%) usr 0.02 ( 0%) sys 0.97 ( 0%) wall
1015 kB ( 0%) ggc
tree find ref. vars : 3.96 ( 1%) usr 0.05 ( 1%) sys 4.06 ( 1%) wall
150561 kB ( 4%) ggc
tree PTA : 17.47 ( 4%) usr 0.29 ( 3%) sys 17.45 ( 4%) wall
59716 kB ( 2%) ggc
tree alias analysis : 12.44 ( 3%) usr 0.61 ( 6%) sys 12.84 ( 3%) wall
95403 kB ( 3%) ggc
tree PHI insertion : 2.25 ( 0%) usr 0.02 ( 0%) sys 2.49 ( 1%) wall
35414 kB ( 1%) ggc
tree SSA rewrite : 11.87 ( 3%) usr 0.04 ( 0%) sys 11.91 ( 3%) wall
203499 kB ( 6%) ggc
tree SSA other : 2.02 ( 0%) usr 0.22 ( 2%) sys 2.46 ( 1%) wall
2499 kB ( 0%) ggc
tree SSA incremental : 25.40 ( 6%) usr 0.18 ( 2%) sys 26.07 ( 6%) wall
63750 kB ( 2%) ggc
tree operand scan : 10.79 ( 2%) usr 1.18 (12%) sys 12.01 ( 3%) wall
116147 kB ( 3%) ggc
dominator optimization: 11.64 ( 3%) usr 0.08 ( 1%) sys 12.08 ( 3%) wall
168798 kB ( 5%) ggc
...
expand : 15.71 ( 3%) usr 0.07 ( 1%) sys 15.54 ( 3%) wall
194871 kB ( 6%) ggc
...
TOTAL : 461.33 9.78 473.07
3503243 kB
--
Summary: Exceptions require an excessive amount of compile-time
memory
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rguenth at tat dot physik dot uni-tuebingen dot de
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
@ 2005-09-17 17:07 ` rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 18:01 ` rguenth at tat dot physik dot uni-tuebingen dot de
` (4 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at tat dot physik dot uni-tuebingen dot de @ 2005-09-17 17:07 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2005-09-17 17:07 -------
ipa-eh patch from
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg00881.html
(with fix) does not really help.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 17:07 ` [Bug tree-optimization/23928] " rguenth at tat dot physik dot uni-tuebingen dot de
@ 2005-09-17 18:01 ` rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 18:43 ` rguenth at tat dot physik dot uni-tuebingen dot de
` (3 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at tat dot physik dot uni-tuebingen dot de @ 2005-09-17 18:01 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2005-09-17 18:00 -------
eh-complexity patch from
http://gcc.gnu.org/ml/gcc-patches/2005-06/msg01052.html
slightly edited to apply (and approved by GeoffK in june) helps:
peak memory usage is down to 1.2GB.
garbage collection : 17.32 ( 6%) usr 0.84 (11%) sys 18.19 ( 6%) wall
0 kB ( 0%) ggc
integration : 29.85 (10%) usr 0.86 (11%) sys 30.90 (10%) wall
2695445 kB (234%) ggc
tree PTA : 15.98 ( 6%) usr 0.23 ( 3%) sys 15.50 ( 5%) wall
59710 kB ( 5%) ggc
tree alias analysis : 11.35 ( 4%) usr 0.51 ( 7%) sys 12.34 ( 4%) wall
95003 kB ( 8%) ggc
tree PHI insertion : 2.19 ( 1%) usr 0.02 ( 0%) sys 2.26 ( 1%) wall
35414 kB ( 3%) ggc
tree SSA rewrite : 12.47 ( 4%) usr 0.11 ( 1%) sys 12.80 ( 4%) wall
203797 kB (18%) ggc
tree SSA other : 1.81 ( 1%) usr 0.26 ( 3%) sys 2.03 ( 1%) wall
2499 kB ( 0%) ggc
tree SSA incremental : 24.40 ( 8%) usr 0.10 ( 1%) sys 24.65 ( 8%) wall
64150 kB ( 6%) ggc
tree operand scan : 9.95 ( 3%) usr 1.00 (13%) sys 11.09 ( 4%) wall
116251 kB (10%) ggc
dominator optimization: 11.43 ( 4%) usr 0.07 ( 1%) sys 11.36 ( 4%) wall
168489 kB (15%) ggc
TOTAL : 288.38 7.62 297.15
1154283 kB
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 17:07 ` [Bug tree-optimization/23928] " rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 18:01 ` rguenth at tat dot physik dot uni-tuebingen dot de
@ 2005-09-17 18:43 ` rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 20:57 ` dnovillo at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at tat dot physik dot uni-tuebingen dot de @ 2005-09-17 18:43 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rguenth at tat dot physik dot uni-tuebingen dot de 2005-09-17 18:43 -------
Extra ggc_collect after each optimize_inline_calls does not help reduce it further.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
` (2 preceding siblings ...)
2005-09-17 18:43 ` rguenth at tat dot physik dot uni-tuebingen dot de
@ 2005-09-17 20:57 ` dnovillo at gcc dot gnu dot org
2005-09-18 0:04 ` pinskia at gcc dot gnu dot org
2005-09-18 9:15 ` rguenth at gcc dot gnu dot org
5 siblings, 0 replies; 8+ messages in thread
From: dnovillo at gcc dot gnu dot org @ 2005-09-17 20:57 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |dnovillo at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
` (3 preceding siblings ...)
2005-09-17 20:57 ` dnovillo at gcc dot gnu dot org
@ 2005-09-18 0:04 ` pinskia at gcc dot gnu dot org
2005-09-18 9:15 ` rguenth at gcc dot gnu dot org
5 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-18 0:04 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |memory-hog
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
` (4 preceding siblings ...)
2005-09-18 0:04 ` pinskia at gcc dot gnu dot org
@ 2005-09-18 9:15 ` rguenth at gcc dot gnu dot org
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-09-18 9:15 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rguenth at gcc dot gnu dot org 2005-09-18 09:15 -------
Created an attachment (id=9757)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9757&action=view)
testcase
Testcase attached as requested.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/23928] Exceptions require an excessive amount of compile-time memory
[not found] <bug-23928-10053@http.gcc.gnu.org/bugzilla/>
@ 2006-10-24 14:11 ` rguenth at gcc dot gnu dot org
0 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-10-24 14:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from rguenth at gcc dot gnu dot org 2006-10-24 14:10 -------
Fixed in 4.2. Numbers are reasonable now:
rguenther@murzim:/space/rguenther/tramp3d> /usr/bin/time ~/bin/maxmem.sh
./install/bin/g++ -O2 -S -o /dev/null tramp3d-v4.cpp -Dleafify=flatten
total: 903456 kB
159.28user 5.17system 2:44.37elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (1major+387189minor)pagefaults 0swaps
rguenther@murzim:/space/rguenther/tramp3d> /usr/bin/time ~/bin/maxmem.sh
./install/bin/g++ -O2 -S -o /dev/null tramp3d-v4.cpp -Dleafify=flatten
-fno-exceptions
total: 871928 kB
135.61user 3.35system 2:18.78elapsed 100%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+299059minor)pagefaults 0swaps
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.2.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23928
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2006-10-24 14:11 UTC | newest]
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2005-09-17 15:52 [Bug tree-optimization/23928] New: Exceptions require an excessive amount of compile-time memory rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 17:07 ` [Bug tree-optimization/23928] " rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 18:01 ` rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 18:43 ` rguenth at tat dot physik dot uni-tuebingen dot de
2005-09-17 20:57 ` dnovillo at gcc dot gnu dot org
2005-09-18 0:04 ` pinskia at gcc dot gnu dot org
2005-09-18 9:15 ` rguenth at gcc dot gnu dot org
[not found] <bug-23928-10053@http.gcc.gnu.org/bugzilla/>
2006-10-24 14:11 ` rguenth at gcc dot gnu dot org
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