* [Bug tree-optimization/54488] tree loop invariant motion uses an excessive amount of memory
2012-09-05 10:21 [Bug tree-optimization/54488] New: tree loop invariant motion uses an excessive amount of memory rguenth at gcc dot gnu.org
@ 2014-10-10 13:34 ` evgeniya.maenkova at gmail dot com
2014-10-19 16:02 ` evgeniya.maenkova at gmail dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: evgeniya.maenkova at gmail dot com @ 2014-10-10 13:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54488
Evgeniya Maenkova <evgeniya.maenkova at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |evgeniya.maenkova at gmail dot com
--- Comment #1 from Evgeniya Maenkova <evgeniya.maenkova at gmail dot com> ---
Could you please clarify this bug status? (As I can see PR46590 you applied
some patch that fixes memory issues in Jan of 2014).
As I can see from the code (I'm very newbie, sorry for mistakes) there are the
structures which keep the information about memory accesses in the whole
function (for all the loops).
When I read you comment in this bug I started to think there is some
possibility to keep the only information about individual loop (which I could
try to implement). However, the comment in PR46590 says you meant something
different.
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug tree-optimization/54488] tree loop invariant motion uses an excessive amount of memory
2012-09-05 10:21 [Bug tree-optimization/54488] New: tree loop invariant motion uses an excessive amount of memory rguenth at gcc dot gnu.org
2014-10-10 13:34 ` [Bug tree-optimization/54488] " evgeniya.maenkova at gmail dot com
@ 2014-10-19 16:02 ` evgeniya.maenkova at gmail dot com
2014-10-19 19:43 ` evgeniya.maenkova at gmail dot com
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: evgeniya.maenkova at gmail dot com @ 2014-10-19 16:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54488
--- Comment #3 from Evgeniya Maenkova <evgeniya.maenkova at gmail dot com> ---
Could you please clarify your comment #36
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46590#c36) in PR4596? I mean "LIM
is now the pass that pushes
memory usage to 1.8GB - all other optimization passes are happy with just
~800MB."
How did you measure lim impact (1,8G)? (Was it by -ftime-report being run
with/without lim optimization? Or was it top? Or some other tool which allow to
see memory footprint for each optimization pass.)
I can see this (for the full test case om 46590). ( I mean based on
-ftime-report we see ~5,5Mb, but this only GC memory, right? ):
MAIN__ main
Analyzing compilation unit
{GC 41969k -> 36104k} {GC 72488k -> 52189k} {GC 70118k -> 55388k}Performing
interprocedural optimizations
<*free_lang_data> <visibility> <early_local_cleanups> {GC 81054k -> 73552k}
<free-inline-summary> <whole-program> <profile_estimate> <devirt> <cp> <inline>
<pure-const> <static-var> <single-use> <comdats>Assembling functions:
MAIN__ {GC 137793k -> 78714k} {GC 107079k -> 70685k} {GC 97203k -> 77229k} {GC
100487k -> 71679k} {GC 148921k -> 129443k} {GC 190666k -> 128409k} {GC 168488k
-> 127341k} main
Execution times (seconds)
phase setup : 0.05 ( 0%) usr 0.01 ( 0%) sys 0.08 ( 0%) wall
107 kB ( 0%) ggc
phase parsing : 13.79 ( 1%) usr 0.15 ( 0%) sys 13.94 ( 1%) wall
41869 kB ( 7%) ggc
phase lang. deferred : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
0 kB ( 0%) ggc
phase opt and generate :2103.63 (99%) usr 89.40 (100%) sys2195.36 (99%) wall
519770 kB (93%) ggc
phase finalize : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
garbage collection : 5.42 ( 0%) usr 0.04 ( 0%) sys 5.48 ( 0%) wall
0 kB ( 0%) ggc
callgraph construction : 0.91 ( 0%) usr 0.00 ( 0%) sys 0.88 ( 0%) wall
7644 kB ( 1%) ggc
callgraph optimization : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall
0 kB ( 0%) ggc
ipa dead code removal : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
0 kB ( 0%) ggc
ipa cp : 0.18 ( 0%) usr 0.00 ( 0%) sys 0.19 ( 0%) wall
256 kB ( 0%) ggc
ipa inlining heuristics : 2.54 ( 0%) usr 0.00 ( 0%) sys 2.54 ( 0%) wall
3253 kB ( 1%) ggc
ipa profile : 0.27 ( 0%) usr 0.00 ( 0%) sys 0.27 ( 0%) wall
0 kB ( 0%) ggc
ipa pure const : 0.42 ( 0%) usr 0.00 ( 0%) sys 0.42 ( 0%) wall
0 kB ( 0%) ggc
cfg construction : 0.31 ( 0%) usr 0.01 ( 0%) sys 0.33 ( 0%) wall
2278 kB ( 0%) ggc
cfg cleanup : 1.75 ( 0%) usr 0.05 ( 0%) sys 1.90 ( 0%) wall
752 kB ( 0%) ggc
CFG verifier : 22.85 ( 1%) usr 0.10 ( 0%) sys 22.83 ( 1%) wall
0 kB ( 0%) ggc
trivially dead code : 1.12 ( 0%) usr 0.00 ( 0%) sys 1.10 ( 0%) wall
0 kB ( 0%) ggc
df scan insns : 2.79 ( 0%) usr 0.12 ( 0%) sys 2.92 ( 0%) wall
0 kB ( 0%) ggc
df multiple defs : 0.75 ( 0%) usr 0.01 ( 0%) sys 0.77 ( 0%) wall
0 kB ( 0%) ggc
df reaching defs : 76.35 ( 4%) usr 68.69 (77%) sys 144.67 ( 7%) wall
0 kB ( 0%) ggc
df live regs : 6.93 ( 0%) usr 0.79 ( 1%) sys 7.65 ( 0%) wall
0 kB ( 0%) ggc
df live&initialized regs: 2.74 ( 0%) usr 0.69 ( 1%) sys 3.41 ( 0%) wall
0 kB ( 0%) ggc
df use-def / def-use chains: 1.04 ( 0%) usr 0.00 ( 0%) sys 1.10 ( 0%)
wall 0 kB ( 0%) ggc
df reg dead/unused notes: 4.37 ( 0%) usr 0.00 ( 0%) sys 4.36 ( 0%) wall
6401 kB ( 1%) ggc
register information : 0.56 ( 0%) usr 0.00 ( 0%) sys 0.55 ( 0%) wall
0 kB ( 0%) ggc
alias analysis : 3.12 ( 0%) usr 0.00 ( 0%) sys 3.15 ( 0%) wall
9226 kB ( 2%) ggc
alias stmt walking : 632.31 (30%) usr 2.05 ( 2%) sys 635.16 (29%) wall
2380 kB ( 0%) ggc
register scan : 0.21 ( 0%) usr 0.00 ( 0%) sys 0.21 ( 0%) wall
274 kB ( 0%) ggc
rebuild jump labels : 0.54 ( 0%) usr 0.01 ( 0%) sys 0.54 ( 0%) wall
0 kB ( 0%) ggc
parser (global) : 13.79 ( 1%) usr 0.15 ( 0%) sys 13.94 ( 1%) wall
41869 kB ( 7%) ggc
early inlining heuristics: 0.01 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
0 kB ( 0%) ggc
inline parameters : 1.06 ( 0%) usr 0.00 ( 0%) sys 1.07 ( 0%) wall
1 kB ( 0%) ggc
integration : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
0 kB ( 0%) ggc
tree gimplify : 5.23 ( 0%) usr 0.04 ( 0%) sys 5.26 ( 0%) wall
38114 kB ( 7%) ggc
tree eh : 0.14 ( 0%) usr 0.00 ( 0%) sys 0.14 ( 0%) wall
0 kB ( 0%) ggc
tree CFG construction : 0.49 ( 0%) usr 0.02 ( 0%) sys 0.52 ( 0%) wall
13855 kB ( 2%) ggc
tree CFG cleanup : 93.20 ( 4%) usr 0.37 ( 0%) sys 93.55 ( 4%) wall
3894 kB ( 1%) ggc
tree tail merge : 0.28 ( 0%) usr 0.00 ( 0%) sys 0.26 ( 0%) wall
0 kB ( 0%) ggc
tree VRP : 15.11 ( 1%) usr 0.66 ( 1%) sys 15.87 ( 1%) wall
15190 kB ( 3%) ggc
tree copy propagation : 1.96 ( 0%) usr 0.01 ( 0%) sys 1.96 ( 0%) wall
7 kB ( 0%) ggc
tree PTA : 68.62 ( 3%) usr 0.35 ( 0%) sys 68.97 ( 3%) wall
5002 kB ( 1%) ggc
tree PHI insertion : 0.34 ( 0%) usr 0.01 ( 0%) sys 0.34 ( 0%) wall
6280 kB ( 1%) ggc
tree SSA rewrite : 2.01 ( 0%) usr 0.01 ( 0%) sys 2.01 ( 0%) wall
12549 kB ( 2%) ggc
tree SSA other : 0.56 ( 0%) usr 0.26 ( 0%) sys 0.82 ( 0%) wall
0 kB ( 0%) ggc
tree SSA incremental : 3.62 ( 0%) usr 0.05 ( 0%) sys 3.78 ( 0%) wall
9579 kB ( 2%) ggc
tree operand scan : 2.71 ( 0%) usr 0.27 ( 0%) sys 3.02 ( 0%) wall
12294 kB ( 2%) ggc
dominator optimization : 637.95 (30%) usr 0.02 ( 0%) sys 637.98 (29%) wall
11954 kB ( 2%) ggc
tree SRA : 2.15 ( 0%) usr 0.01 ( 0%) sys 2.14 ( 0%) wall
172 kB ( 0%) ggc
isolate eroneous paths : 0.09 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall
0 kB ( 0%) ggc
tree CCP : 24.10 ( 1%) usr 0.02 ( 0%) sys 24.14 ( 1%) wall
2100 kB ( 0%) ggc
tree PHI const/copy prop: 0.02 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
7 kB ( 0%) ggc
tree split crit edges : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall
1860 kB ( 0%) ggc
tree reassociation : 0.27 ( 0%) usr 0.00 ( 0%) sys 0.27 ( 0%) wall
0 kB ( 0%) ggc
tree PRE : 11.70 ( 1%) usr 0.35 ( 0%) sys 13.19 ( 1%) wall
10433 kB ( 2%) ggc
tree FRE : 16.29 ( 1%) usr 0.12 ( 0%) sys 15.63 ( 1%) wall
12925 kB ( 2%) ggc
tree code sinking : 0.72 ( 0%) usr 0.00 ( 0%) sys 0.72 ( 0%) wall
291 kB ( 0%) ggc
tree linearize phis : 0.18 ( 0%) usr 0.00 ( 0%) sys 0.18 ( 0%) wall
1 kB ( 0%) ggc
tree forward propagate : 0.82 ( 0%) usr 0.02 ( 0%) sys 0.87 ( 0%) wall
613 kB ( 0%) ggc
tree phiprop : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
0 kB ( 0%) ggc
tree conservative DCE : 0.99 ( 0%) usr 0.24 ( 0%) sys 1.14 ( 0%) wall
127 kB ( 0%) ggc
tree aggressive DCE : 4.79 ( 0%) usr 0.10 ( 0%) sys 5.04 ( 0%) wall
6137 kB ( 1%) ggc
tree buildin call DCE : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
0 kB ( 0%) ggc
tree DSE : 5.18 ( 0%) usr 0.00 ( 0%) sys 5.17 ( 0%) wall
2048 kB ( 0%) ggc
PHI merge : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
tree loop bounds : 1.12 ( 0%) usr 0.00 ( 0%) sys 1.14 ( 0%) wall
2311 kB ( 0%) ggc
tree loop invariant motion: 0.57 ( 0%) usr 0.00 ( 0%) sys 0.57 ( 0%)
wall 0 kB ( 0%) ggc
tree canonical iv : 1.54 ( 0%) usr 0.02 ( 0%) sys 1.53 ( 0%) wall
3193 kB ( 1%) ggc
scev constant prop : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.16 ( 0%) wall
514 kB ( 0%) ggc
complete unrolling : 45.19 ( 2%) usr 1.07 ( 1%) sys 46.24 ( 2%) wall
54512 kB (10%) ggc
tree iv optimization : 16.47 ( 1%) usr 0.11 ( 0%) sys 16.67 ( 1%) wall
15757 kB ( 3%) ggc
tree copy headers : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
tree SSA uncprop : 0.10 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall
0 kB ( 0%) ggc
tree rename SSA copies : 0.29 ( 0%) usr 0.00 ( 0%) sys 0.29 ( 0%) wall
0 kB ( 0%) ggc
tree SSA verifier : 48.93 ( 2%) usr 0.00 ( 0%) sys 49.03 ( 2%) wall
0 kB ( 0%) ggc
tree STMT verifier : 119.16 ( 6%) usr 0.00 ( 0%) sys 119.09 ( 5%) wall
0 kB ( 0%) ggc
tree switch conversion : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
0 kB ( 0%) ggc
tree strlen optimization: 0.08 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall
0 kB ( 0%) ggc
callgraph verifier : 2.82 ( 0%) usr 0.00 ( 0%) sys 2.84 ( 0%) wall
0 kB ( 0%) ggc
dominance frontiers : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall
0 kB ( 0%) ggc
dominance computation : 3.47 ( 0%) usr 0.02 ( 0%) sys 3.36 ( 0%) wall
0 kB ( 0%) ggc
control dependences : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
0 kB ( 0%) ggc
out of ssa : 1.27 ( 0%) usr 0.00 ( 0%) sys 1.27 ( 0%) wall
3 kB ( 0%) ggc
expand vars : 0.70 ( 0%) usr 0.00 ( 0%) sys 0.70 ( 0%) wall
2685 kB ( 0%) ggc
expand : 9.20 ( 0%) usr 0.07 ( 0%) sys 9.47 ( 0%) wall
75267 kB (13%) ggc
post expand cleanups : 0.25 ( 0%) usr 0.00 ( 0%) sys 0.26 ( 0%) wall
0 kB ( 0%) ggc
lower subreg : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
forward prop : 2.40 ( 0%) usr 0.02 ( 0%) sys 2.42 ( 0%) wall
4462 kB ( 1%) ggc
CSE : 5.95 ( 0%) usr 0.00 ( 0%) sys 5.94 ( 0%) wall
3584 kB ( 1%) ggc
dead code elimination : 1.08 ( 0%) usr 0.00 ( 0%) sys 1.10 ( 0%) wall
0 kB ( 0%) ggc
dead store elim1 : 3.79 ( 0%) usr 0.03 ( 0%) sys 3.83 ( 0%) wall
13064 kB ( 2%) ggc
dead store elim2 : 6.27 ( 0%) usr 0.00 ( 0%) sys 6.27 ( 0%) wall
13104 kB ( 2%) ggc
loop init : 50.96 ( 2%) usr 0.01 ( 0%) sys 50.95 ( 2%) wall
28100 kB ( 5%) ggc
loop invariant motion : 5.97 ( 0%) usr 12.23 (14%) sys 18.62 ( 1%) wall
14 kB ( 0%) ggc
loop fini : 0.10 ( 0%) usr 0.00 ( 0%) sys 0.13 ( 0%) wall
0 kB ( 0%) ggc
CPROP : 2.88 ( 0%) usr 0.00 ( 0%) sys 2.90 ( 0%) wall
0 kB ( 0%) ggc
PRE : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall
0 kB ( 0%) ggc
CSE 2 : 5.33 ( 0%) usr 0.01 ( 0%) sys 5.33 ( 0%) wall
2902 kB ( 1%) ggc
branch prediction : 1.63 ( 0%) usr 0.00 ( 0%) sys 1.63 ( 0%) wall
1851 kB ( 0%) ggc
combiner : 3.75 ( 0%) usr 0.01 ( 0%) sys 3.85 ( 0%) wall
5136 kB ( 1%) ggc
if-conversion : 0.11 ( 0%) usr 0.00 ( 0%) sys 0.15 ( 0%) wall
0 kB ( 0%) ggc
integrated RA : 17.72 ( 1%) usr 0.08 ( 0%) sys 17.86 ( 1%) wall
34933 kB ( 6%) ggc
LRA non-specific : 5.26 ( 0%) usr 0.03 ( 0%) sys 5.27 ( 0%) wall
5148 kB ( 1%) ggc
LRA virtuals elimination: 2.09 ( 0%) usr 0.00 ( 0%) sys 2.11 ( 0%) wall
10650 kB ( 2%) ggc
LRA create live ranges : 0.49 ( 0%) usr 0.00 ( 0%) sys 0.49 ( 0%) wall
857 kB ( 0%) ggc
LRA hard reg assignment : 0.15 ( 0%) usr 0.00 ( 0%) sys 0.15 ( 0%) wall
0 kB ( 0%) ggc
reload : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
0 kB ( 0%) ggc
reload CSE regs : 7.30 ( 0%) usr 0.00 ( 0%) sys 7.29 ( 0%) wall
20497 kB ( 4%) ggc
ree : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.15 ( 0%) wall
0 kB ( 0%) ggc
thread pro- & epilogue : 1.16 ( 0%) usr 0.00 ( 0%) sys 1.16 ( 0%) wall
3 kB ( 0%) ggc
if-conversion 2 : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.06 ( 0%) wall
0 kB ( 0%) ggc
combine stack adjustments: 0.19 ( 0%) usr 0.00 ( 0%) sys 0.18 ( 0%) wall
84 kB ( 0%) ggc
peephole 2 : 0.86 ( 0%) usr 0.00 ( 0%) sys 0.84 ( 0%) wall
405 kB ( 0%) ggc
hard reg cprop : 4.49 ( 0%) usr 0.05 ( 0%) sys 4.53 ( 0%) wall
2 kB ( 0%) ggc
scheduling 2 : 15.49 ( 1%) usr 0.06 ( 0%) sys 15.55 ( 1%) wall
4668 kB ( 1%) ggc
machine dep reorg : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall
0 kB ( 0%) ggc
reorder blocks : 1.08 ( 0%) usr 0.02 ( 0%) sys 1.15 ( 0%) wall
3889 kB ( 1%) ggc
shorten branches : 0.94 ( 0%) usr 0.00 ( 0%) sys 0.94 ( 0%) wall
0 kB ( 0%) ggc
final : 2.83 ( 0%) usr 0.03 ( 0%) sys 2.90 ( 0%) wall
12173 kB ( 2%) ggc
variable output : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
2 kB ( 0%) ggc
tree if-combine : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.02 ( 0%) wall
0 kB ( 0%) ggc
straight-line strength reduction: 0.85 ( 0%) usr 0.00 ( 0%) sys 0.84 (
0%) wall 276 kB ( 0%) ggc
rest of compilation : 3.58 ( 0%) usr 0.00 ( 0%) sys 3.70 ( 0%) wall
1791 kB ( 0%) ggc
remove unused locals : 0.92 ( 0%) usr 0.00 ( 0%) sys 0.93 ( 0%) wall
0 kB ( 0%) ggc
address taken : 0.60 ( 0%) usr 0.00 ( 0%) sys 0.61 ( 0%) wall
0 kB ( 0%) ggc
unaccounted todo : 3.97 ( 0%) usr 0.04 ( 0%) sys 4.14 ( 0%) wall
0 kB ( 0%) ggc
verify loop closed : 0.72 ( 0%) usr 0.00 ( 0%) sys 0.75 ( 0%) wall
0 kB ( 0%) ggc
verify RTL sharing : 21.04 ( 1%) usr 0.00 ( 0%) sys 21.04 ( 1%) wall
0 kB ( 0%) ggc
repair loop structures : 1.50 ( 0%) usr 0.00 ( 0%) sys 1.58 ( 0%) wall
0 kB ( 0%) ggc
TOTAL :2117.50 89.56 2209.41
561747 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
My command line was:
time /users/egm/gcc_objdir/libexec/gcc/i686-pc-linux-gnu/5.0.0/f951
-ftime-report -O2 gener-max.f90 > max_out 2>&1
real 36m49.416s
user 35m17.508s
sys 1m29.654s
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug tree-optimization/54488] tree loop invariant motion uses an excessive amount of memory
2012-09-05 10:21 [Bug tree-optimization/54488] New: tree loop invariant motion uses an excessive amount of memory rguenth at gcc dot gnu.org
2014-10-10 13:34 ` [Bug tree-optimization/54488] " evgeniya.maenkova at gmail dot com
2014-10-19 16:02 ` evgeniya.maenkova at gmail dot com
@ 2014-10-19 19:43 ` evgeniya.maenkova at gmail dot com
2014-10-20 13:38 ` evgeniya.maenkova at gmail dot com
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: evgeniya.maenkova at gmail dot com @ 2014-10-19 19:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54488
--- Comment #5 from Evgeniya Maenkova <evgeniya.maenkova at gmail dot com> ---
Also, I collect massif data and see no tree-ssa-lim in it (i mean in top
contributors).
So what do you think?
(How did you measured 1,8Gb caused by lim? - this is for me to understand
whether this bug is actual or not)
Thanks
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug tree-optimization/54488] tree loop invariant motion uses an excessive amount of memory
2012-09-05 10:21 [Bug tree-optimization/54488] New: tree loop invariant motion uses an excessive amount of memory rguenth at gcc dot gnu.org
` (2 preceding siblings ...)
2014-10-19 19:43 ` evgeniya.maenkova at gmail dot com
@ 2014-10-20 13:38 ` evgeniya.maenkova at gmail dot com
2014-10-21 9:24 ` rguenth at gcc dot gnu.org
2014-10-21 11:15 ` evgeniya.maenkova at gmail dot com
5 siblings, 0 replies; 7+ messages in thread
From: evgeniya.maenkova at gmail dot com @ 2014-10-20 13:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54488
--- Comment #7 from Evgeniya Maenkova <evgeniya.maenkova at gmail dot com> ---
I got only 317Mb by top.
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug tree-optimization/54488] tree loop invariant motion uses an excessive amount of memory
2012-09-05 10:21 [Bug tree-optimization/54488] New: tree loop invariant motion uses an excessive amount of memory rguenth at gcc dot gnu.org
` (3 preceding siblings ...)
2014-10-20 13:38 ` evgeniya.maenkova at gmail dot com
@ 2014-10-21 9:24 ` rguenth at gcc dot gnu.org
2014-10-21 11:15 ` evgeniya.maenkova at gmail dot com
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-10-21 9:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54488
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
On x86_64-linux I still see >1GB used (watching top) on the 4.9 branch at -O1
and compilation takes about 8 minutes.
Note that your compiler has checking enabled which at least makes the
-ftime-report output unreliable. -O2 is not expected to deal very well
with such large testcases (of course improving here is nice). LIM
performs more expensive alias analysis at -O2 which may distort numbers here
(to the worse, I don't expect that to improve things).
I have now verified that on trunk and the 4.9 branch it is not LIM anymore
that uses memory / compile-time.
Thus this issue is fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug tree-optimization/54488] tree loop invariant motion uses an excessive amount of memory
2012-09-05 10:21 [Bug tree-optimization/54488] New: tree loop invariant motion uses an excessive amount of memory rguenth at gcc dot gnu.org
` (4 preceding siblings ...)
2014-10-21 9:24 ` rguenth at gcc dot gnu.org
@ 2014-10-21 11:15 ` evgeniya.maenkova at gmail dot com
5 siblings, 0 replies; 7+ messages in thread
From: evgeniya.maenkova at gmail dot com @ 2014-10-21 11:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54488
--- Comment #9 from Evgeniya Maenkova <evgeniya.maenkova at gmail dot com> ---
I use 32bit Linux, perhaps, that gives the difference.
Regarding checking and O2 - I will read about this. Thanks for your note.
^ permalink raw reply [flat|nested] 7+ messages in thread