Mryange opened a new pull request, #65908:
URL: https://github.com/apache/doris/pull/65908
### What problem does this PR solve?
Issue Number: N/A
Problem Summary:
Several scalar-function hot loops repeatedly extracted constant-column
values, performed branchy
null-map writes, or accessed `PODArray` through wrapper methods on every
row. These loop shapes
prevented Clang from generating efficient vector code.
This change hoists invariant bit and bit-shift operands out of the loops,
writes nullable math
predicates unconditionally, and obtains raw input and output pointers before
the `width_bucket`
loop. Focused benchmarks showed approximately 92%-98% lower CPU time for
constant bit operations,
28%-94% lower CPU time for nullable math null-map generation, and 3%-9%
lower CPU time for Float32
`width_bucket`.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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