http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52361
Bug #: 52361
Summary: gcc.dg/pr48141.c times out
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: r...@gcc.gnu.org
Host: sparc-sun-solaris2.[89]
Target: sparc-sun-solaris2.[89]
Build: sparc-sun-solaris2.[89]
I often see the gcc.dg/pr48141.c test time out on an 1.2 GHz UltraSPARC-T2:
on a completely unloaded machine, I find:
real 1:36.81
user 1:34.87
sys 0.48
It's not much better on an 1.35 GHz UltraSPARC-IV:
real 55.51
user 52.20
sys 0.30
while on a 2.6 GHz Opteron 8128, I get
real 17.39
user 13.45
sys 0.35
instead.
With -ftime-report, I find:
Execution times (seconds)
phase setup : 0.03 ( 0%) usr 0.01 ( 0%) sys 0.03 ( 0%) wall
532 kB ( 1%) ggc
phase parsing : 6.38 ( 6%) usr 1.92 (68%) sys 8.31 ( 8%) wall
5212 kB ( 7%) ggc
phase cgraph : 94.53 (94%) usr 0.89 (32%) sys 95.42 (92%) wall
73673 kB (93%) ggc
phase generate : 94.53 (94%) usr 0.89 (32%) sys 95.42 (92%) wall
73673 kB (93%) ggc
garbage collection : 2.10 ( 2%) usr 0.13 ( 5%) sys 2.22 ( 2%) wall
0 kB ( 0%) ggc
callgraph construction : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.23 ( 0%) wall
0 kB ( 0%) ggc
callgraph optimization : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall
0 kB ( 0%) ggc
ipa pure const : 0.25 ( 0%) usr 0.00 ( 0%) sys 0.25 ( 0%) wall
0 kB ( 0%) ggc
cfg construction : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
0 kB ( 0%) ggc
cfg cleanup : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
0 kB ( 0%) ggc
CFG verifier : 2.23 ( 2%) usr 0.00 ( 0%) sys 2.21 ( 2%) wall
0 kB ( 0%) ggc
trivially dead code : 0.85 ( 1%) usr 0.00 ( 0%) sys 0.86 ( 1%) wall
0 kB ( 0%) ggc
df scan insns : 0.29 ( 0%) usr 0.00 ( 0%) sys 0.30 ( 0%) wall
0 kB ( 0%) ggc
df multiple defs : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.06 ( 0%) wall
0 kB ( 0%) ggc
df live regs : 0.78 ( 1%) usr 0.00 ( 0%) sys 0.78 ( 1%) wall
0 kB ( 0%) ggc
df live&initialized regs: 0.14 ( 0%) usr 0.00 ( 0%) sys 0.12 ( 0%) wall
0 kB ( 0%) ggc
df reg dead/unused notes: 0.53 ( 1%) usr 0.00 ( 0%) sys 0.57 ( 1%) wall
0 kB ( 0%) ggc
register information : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall
0 kB ( 0%) ggc
alias analysis : 0.64 ( 1%) usr 0.00 ( 0%) sys 0.62 ( 1%) wall
1 kB ( 0%) ggc
alias stmt walking : 2.29 ( 2%) usr 0.21 ( 7%) sys 2.57 ( 2%) wall
10312 kB (13%) ggc
register scan : 0.09 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall
0 kB ( 0%) ggc
rebuild jump labels : 0.21 ( 0%) usr 0.00 ( 0%) sys 0.20 ( 0%) wall
0 kB ( 0%) ggc
preprocessing : 1.67 ( 2%) usr 0.49 (17%) sys 2.11 ( 2%) wall
1 kB ( 0%) ggc
lexical analysis : 2.05 ( 2%) usr 0.90 (32%) sys 3.11 ( 3%) wall
0 kB ( 0%) ggc
parser function body : 2.52 ( 2%) usr 0.53 (19%) sys 2.94 ( 3%) wall
5157 kB ( 6%) ggc
inline heuristics : 0.80 ( 1%) usr 0.00 ( 0%) sys 0.80 ( 1%) wall
1 kB ( 0%) ggc
tree gimplify : 0.54 ( 1%) usr 0.01 ( 0%) sys 0.55 ( 1%) wall
6875 kB ( 9%) ggc
tree eh : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall
0 kB ( 0%) ggc
tree CFG construction : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
0 kB ( 0%) ggc
tree copy propagation : 1.04 ( 1%) usr 0.00 ( 0%) sys 1.06 ( 1%) wall
0 kB ( 0%) ggc
tree find ref. vars : 0.08 ( 0%) usr 0.00 ( 0%) sys 0.08 ( 0%) wall
0 kB ( 0%) ggc
tree PTA : 1.26 ( 1%) usr 0.00 ( 0%) sys 1.26 ( 1%) wall
0 kB ( 0%) ggc
tree SSA rewrite : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.21 ( 0%) wall
6179 kB ( 8%) ggc
tree SSA other : 0.22 ( 0%) usr 0.08 ( 3%) sys 0.46 ( 0%) wall
0 kB ( 0%) ggc
tree SSA incremental : 0.17 ( 0%) usr 0.00 ( 0%) sys 0.17 ( 0%) wall
0 kB ( 0%) ggc
tree operand scan : 0.42 ( 0%) usr 0.13 ( 5%) sys 0.39 ( 0%) wall
3013 kB ( 4%) ggc
dominator optimization : 0.15 ( 0%) usr 0.00 ( 0%) sys 0.16 ( 0%) wall
0 kB ( 0%) ggc
tree CCP : 0.74 ( 1%) usr 0.00 ( 0%) sys 0.74 ( 1%) wall
0 kB ( 0%) ggc
tree reassociation : 0.12 ( 0%) usr 0.00 ( 0%) sys 0.12 ( 0%) wall
0 kB ( 0%) ggc
tree FRE : 3.25 ( 3%) usr 0.23 ( 8%) sys 3.42 ( 3%) wall
10314 kB (13%) ggc
tree linearize phis : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall
0 kB ( 0%) ggc
tree forward propagate : 0.24 ( 0%) usr 0.00 ( 0%) sys 0.23 ( 0%) wall
0 kB ( 0%) ggc
tree conservative DCE : 0.33 ( 0%) usr 0.00 ( 0%) sys 0.33 ( 0%) wall
0 kB ( 0%) ggc
tree aggressive DCE : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.22 ( 0%) wall
0 kB ( 0%) ggc
tree DSE : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.06 ( 0%) wall
0 kB ( 0%) ggc
tree rename SSA copies : 0.25 ( 0%) usr 0.00 ( 0%) sys 0.25 ( 0%) wall
0 kB ( 0%) ggc
tree SSA verifier : 19.82 (20%) usr 0.00 ( 0%) sys 19.92 (19%) wall
0 kB ( 0%) ggc
tree STMT verifier : 23.03 (23%) usr 0.01 ( 0%) sys 22.98 (22%) wall
0 kB ( 0%) ggc
callgraph verifier : 0.52 ( 1%) usr 0.00 ( 0%) sys 0.48 ( 0%) wall
0 kB ( 0%) ggc
out of ssa : 0.30 ( 0%) usr 0.00 ( 0%) sys 0.30 ( 0%) wall
0 kB ( 0%) ggc
expand : 0.88 ( 1%) usr 0.00 ( 0%) sys 0.88 ( 1%) wall
9454 kB (12%) ggc
post expand cleanups : 0.03 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall
0 kB ( 0%) ggc
forward prop : 0.40 ( 0%) usr 0.02 ( 1%) sys 0.40 ( 0%) wall
0 kB ( 0%) ggc
CSE : 0.58 ( 1%) usr 0.00 ( 0%) sys 0.59 ( 1%) wall
0 kB ( 0%) ggc
dead code elimination : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.22 ( 0%) wall
0 kB ( 0%) ggc
dead store elim1 : 2.23 ( 2%) usr 0.01 ( 0%) sys 2.24 ( 2%) wall
1718 kB ( 2%) ggc
dead store elim2 : 1.79 ( 2%) usr 0.00 ( 0%) sys 1.79 ( 2%) wall
3437 kB ( 4%) ggc
branch prediction : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
0 kB ( 0%) ggc
combiner : 0.42 ( 0%) usr 0.00 ( 0%) sys 0.41 ( 0%) wall
0 kB ( 0%) ggc
integrated RA : 4.50 ( 4%) usr 0.00 ( 0%) sys 4.51 ( 4%) wall
3450 kB ( 4%) ggc
reload : 7.73 ( 8%) usr 0.03 ( 1%) sys 7.75 ( 7%) wall
12031 kB (15%) ggc
reload CSE regs : 2.07 ( 2%) usr 0.00 ( 0%) sys 2.07 ( 2%) wall
3437 kB ( 4%) ggc
thread pro- & epilogue : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall
0 kB ( 0%) ggc
hard reg cprop : 1.00 ( 1%) usr 0.00 ( 0%) sys 1.00 ( 1%) wall
0 kB ( 0%) ggc
delay branch sched : 0.19 ( 0%) usr 0.00 ( 0%) sys 0.19 ( 0%) wall
0 kB ( 0%) ggc
final : 1.42 ( 1%) usr 0.01 ( 0%) sys 1.42 ( 1%) wall
0 kB ( 0%) ggc
rest of compilation : 1.92 ( 2%) usr 0.02 ( 1%) sys 1.96 ( 2%) wall
3438 kB ( 4%) ggc
remove unused locals : 0.22 ( 0%) usr 0.00 ( 0%) sys 0.23 ( 0%) wall
0 kB ( 0%) ggc
address taken : 0.19 ( 0%) usr 0.00 ( 0%) sys 0.20 ( 0%) wall
0 kB ( 0%) ggc
unaccounted todo : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall
0 kB ( 0%) ggc
verify RTL sharing : 3.99 ( 4%) usr 0.00 ( 0%) sys 3.98 ( 4%) wall
0 kB ( 0%) ggc
TOTAL : 100.94 2.82 103.76
79427 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
Rainer
