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perf: nudge LLVM codegen good to_bytes_be
#569
Merged
Comparing
pepyakin:pep/to-be-bytes-fast-path
(
44419d8
) with
main
(
fd26238
)
CodSpeed Performance Gauge
-40%
Improvement
26
Regression
2
Untouched
358
Benchmarks
Mode
CPU Simulation
Wall Time
Memory
Status
Regression
Improvement
Untouched
386 total
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
from/f32/512
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+12%
714.4 µs
637.5 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
from/f64/384
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+10%
582.2 µs
528 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
overflowing_pow/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+10%
460.4 µs
418.3 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
fmt/decimal/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+10%
4.5 ms
4.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
from/f64/512
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+9%
693.5 µs
634.9 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
root/127/128/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+8%
8.6 ms
7.9 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
widening_mul/64/256
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+7%
787.6 µs
737.5 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
log/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+7%
7.2 ms
6.8 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
fmt/binary/64
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+6%
2.8 ms
2.6 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
pow_mod/512
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+6%
65.5 ms
61.6 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
mul_mod/512
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+6%
9.7 ms
9.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
widening_mul/256/64
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+6%
751.4 µs
709.7 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
log/64
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
1.5 ms
1.4 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
fmt/decimal/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
2 ms
1.9 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
wrapping_shr/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
73.3 µs
70.1 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
pow_mod/192
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
8 ms
7.6 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
to/f32/192
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
323.9 µs
310 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
to/f64/192
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
336.6 µs
322.6 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
pow_mod/384
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
34.1 ms
32.7 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
root/5/128/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
4.6 ms
4.5 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
overflowing_pow/192
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
1.5 ms
1.4 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
algorithms/gcd/matrix/apply/256
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
1.1 ms
1.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
log/192
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
13.8 ms
13.3 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
mul_mod/192
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
3.3 ms
3.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
mul_mod/384
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
6.8 ms
6.6 ms
1
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3
4
5
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16
Commits
Click on a commit to change the comparison range
Base
main
fd26238
-40.08%
perf: nudge LLVM codegen good to_bytes_be
44419d8
1 day ago
by pepyakin
© 2026 CodSpeed Technology
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