https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116166
--- Comment #26 from Mark Wielaard <mark at gcc dot gnu.org> ---
With gcc-15-2791-g2083389a18d native build of the preprocessed insn-emit-96.cc
from attachment #1 goes from 6 hours to 5 minutes.
Time variable usr sys wall
GGC
phase setup : 0.04 ( 0%) 0.02 ( 0%) 0.05 ( 0%)
2844k ( 0%)
phase parsing : 11.98 ( 4%) 10.66 ( 47%) 22.73 ( 7%)
306M ( 47%)
phase lang. deferred : 0.20 ( 0%) 0.01 ( 0%) 0.22 ( 0%)
2970k ( 0%)
phase opt and generate : 278.46 ( 96%) 11.75 ( 52%) 291.62 ( 93%)
346M ( 53%)
phase last asm : 0.01 ( 0%) 0.01 ( 0%) 0.02 ( 0%)
69k ( 0%)
phase finalize : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
|name lookup : 2.16 ( 1%) 1.64 ( 7%) 3.94 ( 1%)
4335k ( 1%)
|overload resolution : 2.15 ( 1%) 1.33 ( 6%) 3.28 ( 1%)
30M ( 5%)
garbage collection : 0.92 ( 0%) 1.84 ( 8%) 2.76 ( 1%)
0 ( 0%)
dump files : 0.85 ( 0%) 0.18 ( 1%) 1.02 ( 0%)
0 ( 0%)
callgraph construction : 0.46 ( 0%) 0.04 ( 0%) 0.54 ( 0%)
4404k ( 1%)
callgraph optimization : 0.41 ( 0%) 0.06 ( 0%) 0.53 ( 0%)
108k ( 0%)
callgraph functions expansion : 261.74 ( 90%) 10.47 ( 47%) 273.55 ( 87%)
264M ( 40%)
callgraph ipa passes : 15.34 ( 5%) 1.17 ( 5%) 16.57 ( 5%)
29M ( 4%)
ipa function summary : 0.34 ( 0%) 0.02 ( 0%) 0.31 ( 0%)
1513k ( 0%)
ipa dead code removal : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
ipa inheritance graph : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
152 ( 0%)
ipa devirtualization : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
ipa cp : 0.15 ( 0%) 0.02 ( 0%) 0.19 ( 0%)
695k ( 0%)
ipa inlining heuristics : 0.10 ( 0%) 0.10 ( 0%) 0.26 ( 0%)
345k ( 0%)
ipa function splitting : 0.21 ( 0%) 0.00 ( 0%) 0.14 ( 0%)
52k ( 0%)
ipa comdats : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
ipa various optimizations : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
ipa reference : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
ipa pure const : 0.15 ( 0%) 0.02 ( 0%) 0.15 ( 0%)
0 ( 0%)
ipa icf : 0.11 ( 0%) 0.00 ( 0%) 0.11 ( 0%)
0 ( 0%)
ipa SRA : 0.14 ( 0%) 0.00 ( 0%) 0.15 ( 0%)
137k ( 0%)
ipa free lang data : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
ipa modref : 0.11 ( 0%) 0.00 ( 0%) 0.12 ( 0%)
541k ( 0%)
cfg construction : 0.35 ( 0%) 0.10 ( 0%) 0.40 ( 0%)
11M ( 2%)
cfg cleanup : 3.59 ( 1%) 0.10 ( 0%) 3.81 ( 1%)
2215k ( 0%)
trivially dead code : 0.55 ( 0%) 0.04 ( 0%) 0.53 ( 0%)
0 ( 0%)
df scan insns : 0.46 ( 0%) 0.06 ( 0%) 0.43 ( 0%)
88k ( 0%)
df reaching defs : 0.81 ( 0%) 0.06 ( 0%) 0.82 ( 0%)
0 ( 0%)
df live regs : 4.37 ( 2%) 0.27 ( 1%) 4.54 ( 1%)
0 ( 0%)
df live&initialized regs : 2.34 ( 1%) 0.08 ( 0%) 2.54 ( 1%)
0 ( 0%)
df must-initialized regs : 0.18 ( 0%) 0.00 ( 0%) 0.16 ( 0%)
0 ( 0%)
df use-def / def-use chains : 0.32 ( 0%) 0.02 ( 0%) 0.37 ( 0%)
0 ( 0%)
df reg dead/unused notes : 2.11 ( 1%) 0.11 ( 0%) 2.07 ( 1%)
2691k ( 0%)
register information : 1.09 ( 0%) 0.14 ( 1%) 1.24 ( 0%)
0 ( 0%)
alias analysis : 1.64 ( 1%) 0.10 ( 0%) 1.91 ( 1%)
9836k ( 1%)
alias stmt walking : 0.16 ( 0%) 0.05 ( 0%) 0.15 ( 0%)
0 ( 0%)
register scan : 0.13 ( 0%) 0.01 ( 0%) 0.16 ( 0%)
59k ( 0%)
rebuild jump labels : 0.33 ( 0%) 0.02 ( 0%) 0.24 ( 0%)
0 ( 0%)
preprocessing : 0.98 ( 0%) 2.08 ( 9%) 3.00 ( 1%)
26M ( 4%)
parser (global) : 3.80 ( 1%) 4.47 ( 20%) 8.31 ( 3%)
175M ( 27%)
parser struct body : 0.32 ( 0%) 0.09 ( 0%) 0.38 ( 0%)
6856k ( 1%)
parser enumerator list : 0.22 ( 0%) 0.22 ( 1%) 0.46 ( 0%)
8060k ( 1%)
parser function body : 4.28 ( 1%) 2.47 ( 11%) 7.02 ( 2%)
61M ( 9%)
parser inl. func. body : 0.78 ( 0%) 0.36 ( 2%) 1.23 ( 0%)
12M ( 2%)
parser inl. meth. body : 0.23 ( 0%) 0.09 ( 0%) 0.33 ( 0%)
3821k ( 1%)
template instantiation : 1.15 ( 0%) 0.63 ( 3%) 1.63 ( 1%)
16M ( 2%)
constant expression evaluation : 0.37 ( 0%) 0.18 ( 1%) 0.45 ( 0%)
192k ( 0%)
early inlining heuristics : 0.04 ( 0%) 0.00 ( 0%) 0.17 ( 0%)
950k ( 0%)
inline parameters : 0.68 ( 0%) 0.09 ( 0%) 0.73 ( 0%)
2386k ( 0%)
integration : 0.37 ( 0%) 0.12 ( 1%) 0.44 ( 0%)
4810k ( 1%)
tree gimplify : 0.48 ( 0%) 0.06 ( 0%) 0.51 ( 0%)
28M ( 4%)
tree eh : 0.07 ( 0%) 0.01 ( 0%) 0.04 ( 0%)
26k ( 0%)
tree CFG construction : 0.21 ( 0%) 0.01 ( 0%) 0.28 ( 0%)
20M ( 3%)
tree CFG cleanup : 3.66 ( 1%) 0.30 ( 1%) 4.08 ( 1%)
549k ( 0%)
tree tail merge : 0.36 ( 0%) 0.07 ( 0%) 0.47 ( 0%)
5109k ( 1%)
tree VRP : 6.64 ( 2%) 0.20 ( 1%) 6.95 ( 2%)
1976k ( 0%)
tree Early VRP : 6.31 ( 2%) 0.11 ( 0%) 6.35 ( 2%)
1108k ( 0%)
tree copy propagation : 0.30 ( 0%) 0.04 ( 0%) 0.46 ( 0%)
0 ( 0%)
tree PTA : 0.85 ( 0%) 0.24 ( 1%) 0.99 ( 0%)
906k ( 0%)
tree SSA other : 0.00 ( 0%) 0.01 ( 0%) 0.02 ( 0%)
0 ( 0%)
tree SSA rewrite : 0.17 ( 0%) 0.17 ( 1%) 0.31 ( 0%)
4584k ( 1%)
tree SSA incremental : 0.13 ( 0%) 0.01 ( 0%) 0.16 ( 0%)
222k ( 0%)
tree operand scan : 0.83 ( 0%) 0.23 ( 1%) 0.81 ( 0%)
10M ( 2%)
dominator optimization : 98.73 ( 34%) 0.91 ( 4%) 99.99 ( 32%)
17M ( 3%)
backwards jump threading : 60.42 ( 21%) 0.76 ( 3%) 61.86 ( 20%)
39M ( 6%)
tree SRA : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
isolate eroneous paths : 0.08 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 ( 0%)
tree CCP : 1.75 ( 1%) 0.14 ( 1%) 1.95 ( 1%)
930k ( 0%)
tree split crit edges : 0.11 ( 0%) 0.01 ( 0%) 0.13 ( 0%)
4548k ( 1%)
tree reassociation : 0.19 ( 0%) 0.02 ( 0%) 0.16 ( 0%)
27k ( 0%)
tree PRE : 1.33 ( 0%) 0.23 ( 1%) 1.55 ( 0%)
10068k ( 1%)
tree FRE : 2.47 ( 1%) 0.27 ( 1%) 2.88 ( 1%)
1125k ( 0%)
tree code sinking : 0.39 ( 0%) 0.09 ( 0%) 0.39 ( 0%)
9581k ( 1%)
tree linearize phis : 0.20 ( 0%) 0.02 ( 0%) 0.18 ( 0%)
1090k ( 0%)
tree backward propagate : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
tree forward propagate : 0.76 ( 0%) 0.08 ( 0%) 0.83 ( 0%)
171k ( 0%)
tree phiprop : 0.08 ( 0%) 0.00 ( 0%) 0.09 ( 0%)
0 ( 0%)
tree conservative DCE : 0.16 ( 0%) 0.02 ( 0%) 0.28 ( 0%)
0 ( 0%)
tree aggressive DCE : 0.29 ( 0%) 0.04 ( 0%) 0.28 ( 0%)
2094k ( 0%)
tree buildin call DCE : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
tree DSE : 0.19 ( 0%) 0.02 ( 0%) 0.27 ( 0%)
8272 ( 0%)
PHI merge : 0.05 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
tree loop optimization : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
tree loop invariant motion : 0.01 ( 0%) 0.01 ( 0%) 0.01 ( 0%)
0 ( 0%)
complete unrolling : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
tree slp vectorization : 0.30 ( 0%) 0.09 ( 0%) 0.38 ( 0%)
3311k ( 0%)
tree copy headers : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
984k ( 0%)
tree SSA uncprop : 0.16 ( 0%) 0.01 ( 0%) 0.23 ( 0%)
0 ( 0%)
tree NRV optimization : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
42k ( 0%)
tree switch conversion : 0.04 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
554k ( 0%)
tree switch lowering : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
99k ( 0%)
gimple expand pow : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
gimple widening/fma detection : 0.01 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
43k ( 0%)
tree strlen optimization : 0.09 ( 0%) 0.01 ( 0%) 0.16 ( 0%)
984k ( 0%)
tree modref : 0.24 ( 0%) 0.03 ( 0%) 0.42 ( 0%)
1012k ( 0%)
dominance frontiers : 0.16 ( 0%) 0.00 ( 0%) 0.19 ( 0%)
0 ( 0%)
dominance computation : 4.05 ( 1%) 0.18 ( 1%) 4.02 ( 1%)
0 ( 0%)
control dependences : 0.02 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 ( 0%)
out of ssa : 0.15 ( 0%) 0.01 ( 0%) 0.25 ( 0%)
365k ( 0%)
expand vars : 0.05 ( 0%) 0.01 ( 0%) 0.05 ( 0%)
225k ( 0%)
expand : 1.49 ( 1%) 0.43 ( 2%) 1.70 ( 1%)
31M ( 5%)
post expand cleanups : 0.54 ( 0%) 0.09 ( 0%) 0.71 ( 0%)
9495k ( 1%)
varconst : 0.05 ( 0%) 0.08 ( 0%) 0.12 ( 0%)
4864 ( 0%)
lower subreg : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
jump : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 ( 0%)
forward prop : 1.21 ( 0%) 0.09 ( 0%) 1.39 ( 0%)
71k ( 0%)
CSE : 3.10 ( 1%) 0.27 ( 1%) 3.49 ( 1%)
187k ( 0%)
dead code elimination : 0.56 ( 0%) 0.02 ( 0%) 0.67 ( 0%)
0 ( 0%)
dead store elim1 : 0.37 ( 0%) 0.02 ( 0%) 0.36 ( 0%)
490k ( 0%)
dead store elim2 : 0.58 ( 0%) 0.04 ( 0%) 0.66 ( 0%)
1519k ( 0%)
loop analysis : 0.02 ( 0%) 0.01 ( 0%) 0.01 ( 0%)
0 ( 0%)
loop init : 1.67 ( 1%) 0.11 ( 0%) 1.63 ( 1%)
3446k ( 1%)
loop fini : 0.23 ( 0%) 0.05 ( 0%) 0.17 ( 0%)
0 ( 0%)
CPROP : 6.33 ( 2%) 0.18 ( 1%) 6.72 ( 2%)
10M ( 2%)
PRE : 0.29 ( 0%) 0.01 ( 0%) 0.33 ( 0%)
132k ( 0%)
auto inc dec : 0.06 ( 0%) 0.01 ( 0%) 0.15 ( 0%)
22k ( 0%)
CSE 2 : 2.12 ( 1%) 0.12 ( 1%) 2.22 ( 1%)
68k ( 0%)
branch prediction : 0.31 ( 0%) 0.04 ( 0%) 0.36 ( 0%)
127k ( 0%)
combiner : 1.50 ( 1%) 0.10 ( 0%) 1.70 ( 1%)
2482k ( 0%)
if-conversion : 0.77 ( 0%) 0.08 ( 0%) 0.75 ( 0%)
2882k ( 0%)
mode switching : 0.00 ( 0%) 0.01 ( 0%) 0.02 ( 0%)
0 ( 0%)
scheduling : 16.02 ( 6%) 0.32 ( 1%) 16.46 ( 5%)
2475k ( 0%)
integrated RA : 4.43 ( 2%) 0.23 ( 1%) 4.65 ( 1%)
39M ( 6%)
LRA non-specific : 1.60 ( 1%) 0.02 ( 0%) 1.74 ( 1%)
430k ( 0%)
LRA virtuals elimination : 1.52 ( 1%) 0.01 ( 0%) 1.54 ( 0%)
283k ( 0%)
LRA reload inheritance : 0.33 ( 0%) 0.01 ( 0%) 0.25 ( 0%)
176k ( 0%)
LRA create live ranges : 0.38 ( 0%) 0.00 ( 0%) 0.44 ( 0%)
105k ( 0%)
LRA hard reg assignment : 0.13 ( 0%) 0.01 ( 0%) 0.07 ( 0%)
0 ( 0%)
LRA rematerialization : 0.08 ( 0%) 0.03 ( 0%) 0.11 ( 0%)
0 ( 0%)
reload : 0.06 ( 0%) 0.01 ( 0%) 0.09 ( 0%)
38k ( 0%)
reload CSE regs : 1.20 ( 0%) 0.04 ( 0%) 1.31 ( 0%)
1997k ( 0%)
ree : 0.32 ( 0%) 0.01 ( 0%) 0.25 ( 0%)
1880 ( 0%)
thread pro- & epilogue : 1.14 ( 0%) 0.07 ( 0%) 1.10 ( 0%)
2690k ( 0%)
if-conversion 2 : 0.17 ( 0%) 0.01 ( 0%) 0.16 ( 0%)
1560 ( 0%)
peephole 2 : 0.26 ( 0%) 0.00 ( 0%) 0.20 ( 0%)
0 ( 0%)
hard reg cprop : 0.53 ( 0%) 0.14 ( 1%) 0.68 ( 0%)
5568 ( 0%)
scheduling 2 : 2.67 ( 1%) 0.10 ( 0%) 2.82 ( 1%)
481k ( 0%)
machine dep reorg : 0.02 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
reorder blocks : 0.67 ( 0%) 0.03 ( 0%) 0.76 ( 0%)
4364k ( 1%)
shorten branches : 0.30 ( 0%) 0.02 ( 0%) 0.28 ( 0%)
0 ( 0%)
final : 0.95 ( 0%) 0.13 ( 1%) 1.05 ( 0%)
4363k ( 1%)
symout : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 ( 0%)
tree if-combine : 0.08 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
2800 ( 0%)
if to switch conversion : 0.13 ( 0%) 0.00 ( 0%) 0.19 ( 0%)
1649k ( 0%)
straight-line strength reduction : 0.05 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
54k ( 0%)
store merging : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
17k ( 0%)
initialize rtl : 0.04 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
18k ( 0%)
address lowering : 0.01 ( 0%) 0.01 ( 0%) 0.00 ( 0%)
0 ( 0%)
access analysis : 0.39 ( 0%) 0.08 ( 0%) 0.47 ( 0%)
168 ( 0%)
rest of compilation : 7.22 ( 2%) 0.66 ( 3%) 7.74 ( 2%)
17M ( 3%)
unaccounted late compilation : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 ( 0%)
remove unused locals : 0.14 ( 0%) 0.03 ( 0%) 0.22 ( 0%)
0 ( 0%)
address taken : 0.21 ( 0%) 0.01 ( 0%) 0.22 ( 0%)
0 ( 0%)
rebuild frequencies : 0.02 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 ( 0%)
repair loop structures : 0.04 ( 0%) 0.02 ( 0%) 0.08 ( 0%)
0 ( 0%)
TOTAL : 290.69 22.46 314.65
658M
