https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114261
Bug ID: 114261
Summary: [13/14 Regression] Scheduling takes excessive time
(97%)
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at rivosinc dot com
Target Milestone: ---
I recently enabled timeout detection for the risc-v fuzzer so I'm not sure how
interesting this is. Seems like something weird is going on in scheduling that
should be short circuited/bailed out.
tip-of-tree
> ./bin/riscv64-unknown-linux-gnu-gcc red.c -O1 -fschedule-insns -w
> -ftime-report
Time variable usr sys wall
GGC
phase setup : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
2779k ( 1%)
phase parsing : 0.72 ( 0%) 0.54 ( 38%) 1.35 ( 0%)
36M ( 13%)
phase opt and generate : 917.85 (100%) 0.89 ( 62%) 925.29 (100%)
241M ( 86%)
phase last asm : 0.07 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
343k ( 0%)
garbage collection : 0.31 ( 0%) 0.01 ( 1%) 0.37 ( 0%)
0 ( 0%)
dump files : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
callgraph construction : 0.06 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
8997k ( 3%)
callgraph optimization : 0.02 ( 0%) 0.01 ( 1%) 0.03 ( 0%)
10k ( 0%)
callgraph functions expansion : 915.19 (100%) 0.76 ( 53%) 922.36 (100%)
198M ( 71%)
callgraph ipa passes : 2.45 ( 0%) 0.10 ( 7%) 2.68 ( 0%)
19M ( 7%)
ipa function summary : 0.20 ( 0%) 0.00 ( 0%) 0.21 ( 0%)
5358k ( 2%)
ipa dead code removal : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
ipa inlining heuristics : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
192 ( 0%)
ipa pure const : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
1080 ( 0%)
ipa modref : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
4336 ( 0%)
cfg construction : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
28k ( 0%)
cfg cleanup : 0.08 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
2496 ( 0%)
CFG verifier : 1.27 ( 0%) 0.01 ( 1%) 1.26 ( 0%)
0 ( 0%)
trivially dead code : 0.11 ( 0%) 0.00 ( 0%) 0.12 ( 0%)
0 ( 0%)
df scan insns : 0.20 ( 0%) 0.04 ( 3%) 0.26 ( 0%)
528 ( 0%)
df reaching defs : 1.03 ( 0%) 0.03 ( 2%) 1.07 ( 0%)
0 ( 0%)
df live regs : 0.75 ( 0%) 0.00 ( 0%) 0.80 ( 0%)
0 ( 0%)
df live&initialized regs : 0.22 ( 0%) 0.00 ( 0%) 0.22 ( 0%)
0 ( 0%)
df use-def / def-use chains : 0.00 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
df reg dead/unused notes : 0.66 ( 0%) 0.00 ( 0%) 0.68 ( 0%)
7041k ( 2%)
register information : 0.27 ( 0%) 0.00 ( 0%) 0.28 ( 0%)
0 ( 0%)
alias analysis : 0.45 ( 0%) 0.01 ( 1%) 0.45 ( 0%)
14M ( 5%)
alias stmt walking : 0.38 ( 0%) 0.03 ( 2%) 0.50 ( 0%)
3192 ( 0%)
register scan : 0.03 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
586k ( 0%)
rebuild jump labels : 0.05 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
0 ( 0%)
preprocessing : 0.08 ( 0%) 0.09 ( 6%) 0.24 ( 0%)
1861k ( 1%)
lexical analysis : 0.24 ( 0%) 0.16 ( 11%) 0.30 ( 0%)
0 ( 0%)
parser (global) : 0.18 ( 0%) 0.12 ( 8%) 0.35 ( 0%)
10103k ( 4%)
parser function body : 0.19 ( 0%) 0.17 ( 12%) 0.40 ( 0%)
24M ( 9%)
inline parameters : 0.10 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
128k ( 0%)
tree gimplify : 0.04 ( 0%) 0.02 ( 1%) 0.05 ( 0%)
12M ( 5%)
tree eh : 0.00 ( 0%) 0.01 ( 1%) 0.00 ( 0%)
10056 ( 0%)
tree CFG construction : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
8660k ( 3%)
tree CFG cleanup : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
20k ( 0%)
tree copy propagation : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
200 ( 0%)
tree PTA : 0.36 ( 0%) 0.06 ( 4%) 0.44 ( 0%)
2128k ( 1%)
tree SSA other : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
tree SSA rewrite : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
2079k ( 1%)
tree SSA incremental : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
196k ( 0%)
tree operand scan : 0.00 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
3695k ( 1%)
dominator optimization : 0.42 ( 0%) 0.00 ( 0%) 0.46 ( 0%)
515k ( 0%)
backwards jump threading : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2256 ( 0%)
tree CCP : 0.13 ( 0%) 0.01 ( 1%) 0.12 ( 0%)
751k ( 0%)
tree FRE : 0.13 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
659k ( 0%)
tree code sinking : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
63k ( 0%)
tree backward propagate : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
tree forward propagate : 0.03 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
62k ( 0%)
tree conservative DCE : 0.06 ( 0%) 0.01 ( 1%) 0.06 ( 0%)
0 ( 0%)
tree aggressive DCE : 0.03 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
0 ( 0%)
tree DSE : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
16k ( 0%)
tree loop invariant motion : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
2712 ( 0%)
tree canonical iv : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
234k ( 0%)
complete unrolling : 0.05 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
977k ( 0%)
tree iv optimization : 0.06 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
2150k ( 1%)
tree copy headers : 0.04 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
684k ( 0%)
tree SSA verifier : 1.39 ( 0%) 0.01 ( 1%) 1.45 ( 0%)
0 ( 0%)
tree STMT verifier : 2.04 ( 0%) 0.03 ( 2%) 2.14 ( 0%)
0 ( 0%)
tree strlen optimization : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
582k ( 0%)
tree modref : 0.04 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
11k ( 0%)
callgraph verifier : 0.07 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
0 ( 0%)
dominance computation : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
out of ssa : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
376 ( 0%)
expand vars : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
2102k ( 1%)
expand : 0.29 ( 0%) 0.05 ( 3%) 0.37 ( 0%)
63M ( 22%)
post expand cleanups : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
5184 ( 0%)
lower subreg : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
forward prop : 0.25 ( 0%) 0.04 ( 3%) 0.29 ( 0%)
1448k ( 1%)
CSE : 0.64 ( 0%) 0.01 ( 1%) 0.65 ( 0%)
1083k ( 0%)
dead code elimination : 0.07 ( 0%) 0.00 ( 0%) 0.07 ( 0%)
0 ( 0%)
dead store elim1 : 0.70 ( 0%) 0.01 ( 1%) 0.74 ( 0%)
2507k ( 1%)
dead store elim2 : 0.61 ( 0%) 0.00 ( 0%) 0.61 ( 0%)
2385k ( 1%)
loop init : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
1257k ( 0%)
loop invariant motion : 0.15 ( 0%) 0.00 ( 0%) 0.13 ( 0%)
23k ( 0%)
loop fini : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
auto inc dec : 0.06 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
144 ( 0%)
branch prediction : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
58k ( 0%)
combiner : 1.12 ( 0%) 0.03 ( 2%) 1.17 ( 0%)
22M ( 8%)
scheduling : 895.36 ( 97%) 0.19 ( 13%) 901.31 ( 97%)
15M ( 6%)
integrated RA : 2.93 ( 0%) 0.21 ( 15%) 3.28 ( 0%)
52M ( 19%)
LRA non-specific : 0.41 ( 0%) 0.01 ( 1%) 0.44 ( 0%)
218k ( 0%)
LRA virtuals elimination : 0.11 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
42k ( 0%)
LRA reload inheritance : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
4816 ( 0%)
LRA create live ranges : 0.12 ( 0%) 0.00 ( 0%) 0.12 ( 0%)
411k ( 0%)
LRA hard reg assignment : 0.10 ( 0%) 0.00 ( 0%) 0.10 ( 0%)
0 ( 0%)
reload : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
144 ( 0%)
reload CSE regs : 0.18 ( 0%) 0.00 ( 0%) 0.17 ( 0%)
2470k ( 1%)
thread pro- & epilogue : 0.27 ( 0%) 0.00 ( 0%) 0.26 ( 0%)
18k ( 0%)
hard reg cprop : 0.21 ( 0%) 0.00 ( 0%) 0.21 ( 0%)
11k ( 0%)
reorder blocks : 0.03 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
89k ( 0%)
shorten branches : 0.04 ( 0%) 0.01 ( 1%) 0.04 ( 0%)
0 ( 0%)
final : 0.15 ( 0%) 0.00 ( 0%) 0.15 ( 0%)
385k ( 0%)
straight-line strength reduction : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
234k ( 0%)
initialize rtl : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
17k ( 0%)
access analysis : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
512 ( 0%)
rest of compilation : 0.21 ( 0%) 0.00 ( 0%) 0.24 ( 0%)
1531k ( 1%)
remove unused locals : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
address taken : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
verify loop closed : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
verify RTL sharing : 2.30 ( 0%) 0.02 ( 1%) 2.40 ( 0%)
0 ( 0%)
TOTAL : 918.66 1.43 926.72
280M
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
Bisected with a 2 minute timeout. First bad commit: r13-5154-g733a1b777f1
r13-5154-g733a1b777f1
> ./bin/riscv64-unknown-linux-gnu-gcc red.c -O1 -fschedule-insns -w
> -ftime-report; /work/patrick/notify.sh
Time variable usr sys wall
GGC
phase setup : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
1539k ( 1%)
phase parsing : 0.61 ( 0%) 0.51 ( 35%) 1.12 ( 0%)
36M ( 13%)
phase opt and generate :1342.05 (100%) 0.93 ( 64%)1348.25 (100%)
246M ( 87%)
phase last asm : 0.05 ( 0%) 0.01 ( 1%) 0.06 ( 0%)
89k ( 0%)
garbage collection : 0.39 ( 0%) 0.01 ( 1%) 0.41 ( 0%)
0 ( 0%)
callgraph construction : 0.12 ( 0%) 0.02 ( 1%) 0.09 ( 0%)
9000k ( 3%)
callgraph optimization : 0.02 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
4112 ( 0%)
callgraph functions expansion :1339.07 (100%) 0.81 ( 56%)1345.12 (100%)
202M ( 71%)
callgraph ipa passes : 2.68 ( 0%) 0.10 ( 7%) 2.81 ( 0%)
21M ( 7%)
ipa function summary : 0.08 ( 0%) 0.01 ( 1%) 0.09 ( 0%)
7113k ( 2%)
ipa dead code removal : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
ipa inlining heuristics : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2536 ( 0%)
ipa pure const : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
1080 ( 0%)
ipa free inline summary : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
ipa modref : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
6256 ( 0%)
cfg construction : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
28k ( 0%)
cfg cleanup : 0.15 ( 0%) 0.00 ( 0%) 0.14 ( 0%)
2496 ( 0%)
CFG verifier : 1.46 ( 0%) 0.01 ( 1%) 1.48 ( 0%)
0 ( 0%)
trivially dead code : 0.12 ( 0%) 0.00 ( 0%) 0.12 ( 0%)
0 ( 0%)
df scan insns : 0.18 ( 0%) 0.06 ( 4%) 0.24 ( 0%)
624 ( 0%)
df reaching defs : 1.28 ( 0%) 0.02 ( 1%) 1.29 ( 0%)
0 ( 0%)
df live regs : 0.87 ( 0%) 0.00 ( 0%) 0.83 ( 0%)
0 ( 0%)
df live&initialized regs : 0.25 ( 0%) 0.00 ( 0%) 0.23 ( 0%)
0 ( 0%)
df use-def / def-use chains : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
df reg dead/unused notes : 0.70 ( 0%) 0.00 ( 0%) 0.69 ( 0%)
6981k ( 2%)
register information : 0.33 ( 0%) 0.00 ( 0%) 0.33 ( 0%)
0 ( 0%)
alias analysis : 0.46 ( 0%) 0.00 ( 0%) 0.44 ( 0%)
14M ( 5%)
alias stmt walking : 0.54 ( 0%) 0.02 ( 1%) 0.59 ( 0%)
3192 ( 0%)
register scan : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
591k ( 0%)
rebuild jump labels : 0.05 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
0 ( 0%)
preprocessing : 0.12 ( 0%) 0.10 ( 7%) 0.40 ( 0%)
1602k ( 1%)
lexical analysis : 0.17 ( 0%) 0.20 ( 14%) 0.26 ( 0%)
0 ( 0%)
parser (global) : 0.16 ( 0%) 0.09 ( 6%) 0.22 ( 0%)
10M ( 4%)
parser function body : 0.11 ( 0%) 0.11 ( 8%) 0.16 ( 0%)
24M ( 9%)
parser inl. func. body : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
24k ( 0%)
inline parameters : 0.08 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
128k ( 0%)
tree gimplify : 0.05 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
12M ( 5%)
tree eh : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
10056 ( 0%)
tree CFG construction : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
8669k ( 3%)
tree CFG cleanup : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
25k ( 0%)
tree copy propagation : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
200 ( 0%)
tree PTA : 0.40 ( 0%) 0.07 ( 5%) 0.45 ( 0%)
2127k ( 1%)
tree SSA rewrite : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
2079k ( 1%)
tree SSA incremental : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
200k ( 0%)
tree operand scan : 0.03 ( 0%) 0.03 ( 2%) 0.04 ( 0%)
3691k ( 1%)
dominator optimization : 0.80 ( 0%) 0.00 ( 0%) 0.79 ( 0%)
2918k ( 1%)
backwards jump threading : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2560 ( 0%)
tree CCP : 0.12 ( 0%) 0.00 ( 0%) 0.13 ( 0%)
734k ( 0%)
tree reassociation : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
96 ( 0%)
tree FRE : 0.11 ( 0%) 0.00 ( 0%) 0.12 ( 0%)
684k ( 0%)
tree code sinking : 0.03 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
63k ( 0%)
tree linearize phis : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
11k ( 0%)
tree forward propagate : 0.05 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
67k ( 0%)
tree conservative DCE : 0.02 ( 0%) 0.04 ( 3%) 0.06 ( 0%)
0 ( 0%)
tree aggressive DCE : 0.04 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
16k ( 0%)
tree DSE : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
tree loop invariant motion : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
2616 ( 0%)
tree canonical iv : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
236k ( 0%)
complete unrolling : 0.06 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
980k ( 0%)
tree iv optimization : 0.05 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
2196k ( 1%)
tree SSA uncprop : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
tree SSA verifier : 1.82 ( 0%) 0.00 ( 0%) 1.77 ( 0%)
0 ( 0%)
tree STMT verifier : 2.38 ( 0%) 0.00 ( 0%) 2.35 ( 0%)
0 ( 0%)
tree strlen optimization : 0.03 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
631k ( 0%)
tree modref : 0.04 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
12k ( 0%)
callgraph verifier : 0.09 ( 0%) 0.00 ( 0%) 0.11 ( 0%)
0 ( 0%)
dominance computation : 0.05 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
out of ssa : 0.03 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
480 ( 0%)
expand vars : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2133k ( 1%)
expand : 0.29 ( 0%) 0.01 ( 1%) 0.31 ( 0%)
61M ( 22%)
post expand cleanups : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
5656 ( 0%)
varconst : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
88k ( 0%)
lower subreg : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
forward prop : 0.22 ( 0%) 0.02 ( 1%) 0.24 ( 0%)
1193k ( 0%)
CSE : 0.60 ( 0%) 0.01 ( 1%) 0.61 ( 0%)
863k ( 0%)
dead code elimination : 0.08 ( 0%) 0.00 ( 0%) 0.09 ( 0%)
0 ( 0%)
dead store elim1 : 0.76 ( 0%) 0.00 ( 0%) 0.77 ( 0%)
2501k ( 1%)
dead store elim2 : 0.79 ( 0%) 0.00 ( 0%) 0.77 ( 0%)
2492k ( 1%)
loop init : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
1305k ( 0%)
loop invariant motion : 0.13 ( 0%) 0.00 ( 0%) 0.18 ( 0%)
34k ( 0%)
loop fini : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
branch prediction : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
60k ( 0%)
combiner : 0.94 ( 0%) 0.00 ( 0%) 0.94 ( 0%)
25M ( 9%)
if-conversion : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
10k ( 0%)
scheduling :1315.49 ( 98%) 0.37 ( 26%)1320.88 ( 98%)
15M ( 5%)
integrated RA : 4.20 ( 0%) 0.22 ( 15%) 4.58 ( 0%)
53M ( 19%)
LRA non-specific : 0.60 ( 0%) 0.00 ( 0%) 0.63 ( 0%)
245k ( 0%)
LRA virtuals elimination : 0.20 ( 0%) 0.00 ( 0%) 0.20 ( 0%)
43k ( 0%)
LRA reload inheritance : 0.05 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
5040 ( 0%)
LRA create live ranges : 0.19 ( 0%) 0.00 ( 0%) 0.19 ( 0%)
412k ( 0%)
LRA hard reg assignment : 0.15 ( 0%) 0.00 ( 0%) 0.15 ( 0%)
0 ( 0%)
reload : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
168 ( 0%)
reload CSE regs : 0.18 ( 0%) 0.00 ( 0%) 0.19 ( 0%)
2494k ( 1%)
thread pro- & epilogue : 0.28 ( 0%) 0.00 ( 0%) 0.28 ( 0%)
20k ( 0%)
hard reg cprop : 0.21 ( 0%) 0.00 ( 0%) 0.20 ( 0%)
22k ( 0%)
reorder blocks : 0.05 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
99k ( 0%)
shorten branches : 0.06 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
0 ( 0%)
final : 0.13 ( 0%) 0.00 ( 0%) 0.15 ( 0%)
624 ( 0%)
straight-line strength reduction : 0.03 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
234k ( 0%)
access analysis : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
416 ( 0%)
rest of compilation : 0.23 ( 0%) 0.01 ( 1%) 0.27 ( 0%)
2179k ( 1%)
remove unused locals : 0.02 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 ( 0%)
address taken : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 ( 0%)
verify RTL sharing : 2.54 ( 0%) 0.00 ( 0%) 2.57 ( 0%)
0 ( 0%)
TOTAL :1342.71 1.45 1349.44
284M
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
I don't have the tooling to reliably reduce a slow compile issue so I've
attached the unreduced preprocessed file I was testing with. Any tips for
reducing a case like this would be appreciated.
Testcase found via fuzzer.
