tustvold opened a new pull request, #2646:
URL: https://github.com/apache/arrow-rs/pull/2646
# Which issue does this PR close?
<!--
We generally require a GitHub issue to be filed for all bug fixes and
enhancements and this helps us generate change logs for our releases. You can
link an issue to this PR using the GitHub syntax. For example `Closes #123`
indicates that this PR will close issue #123.
-->
Closes #.
# Rationale for this change
<!--
Why are you proposing this change? If this is already explained clearly in
the issue then this section is not needed.
Explaining clearly why changes are proposed helps reviewers understand your
changes and offer better suggestions for fixes.
-->
I was messing around in godbolt and realised these loops were not getting
vectorised correctly
**Default flags**
```
eq Float32 time: [36.531 us 36.547 us 36.566 us]
change: [-45.190% -45.147% -45.104%] (p = 0.00 <
0.05)
Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
1 (1.00%) low mild
1 (1.00%) high mild
3 (3.00%) high severe
neq Float32 time: [36.677 us 36.695 us 36.718 us]
change: [-48.185% -48.131% -48.071%] (p = 0.00 <
0.05)
Performance has improved.
Found 12 outliers among 100 measurements (12.00%)
2 (2.00%) low mild
2 (2.00%) high mild
8 (8.00%) high severe
```
**Target CPU**
```
eq Float32 time: [19.023 us 19.040 us 19.060 us]
change: [-71.418% -71.385% -71.347%] (p = 0.00 <
0.05)
Performance has improved.
Found 16 outliers among 100 measurements (16.00%)
9 (9.00%) high mild
7 (7.00%) high severe
neq Float32 time: [19.172 us 19.184 us 19.197 us]
change: [-72.938% -72.919% -72.900%] (p = 0.00 <
0.05)
Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
1 (1.00%) low mild
1 (1.00%) high mild
6 (6.00%) high severe
```
# What changes are included in this PR?
<!--
There is no need to duplicate the description in the issue here but it is
sometimes worth providing a summary of the individual changes in this PR.
-->
# Are there any user-facing changes?
<!--
If there are user-facing changes then we may require documentation to be
updated before approving the PR.
-->
<!---
If there are any breaking changes to public APIs, please add the `breaking
change` label.
-->
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
