guyuqi opened a new pull request #12398:
URL: https://github.com/apache/arrow/pull/12398
Benchmark:
Before:
```
BenchmarkPlainEncodingBoolean/len_1024-64 292210 4084 ns/op 250.74 MB/s
BenchmarkPlainEncodingBoolean/len_2048-64 179871 6669 ns/op 307.10 MB/s
BenchmarkPlainEncodingBoolean/len_4096-64 101024 11895 ns/op 344.35 MB/s
BenchmarkPlainEncodingBoolean/len_8192-64 53070 22599 ns/op 362.49 MB/s
BenchmarkPlainEncodingBoolean/len_16384-64 26664 45060 ns/op 363.60 MB/s
BenchmarkPlainEncodingBoolean/len_32768-64 13353 89844 ns/op 364.72 MB/s
BenchmarkPlainEncodingBoolean/len_65536-64 6663179439 ns/op 365.23 MB/s
```
After:
```
BenchmarkPlainEncodingBoolean/len_1024-64 414085 2898 ns/op 353.32 MB/s
BenchmarkPlainEncodingBoolean/len_2048-64 217814 5485 ns/op 373.39 MB/s
BenchmarkPlainEncodingBoolean/len_4096-64 112413 10678 ns/op 383.60 MB/s
BenchmarkPlainEncodingBoolean/len_8192-64 57085 21012 ns/op 389.87 MB/s
BenchmarkPlainEncodingBoolean/len_16384-64 28668 41854 ns/op 391.46 MB/s
BenchmarkPlainEncodingBoolean/len_32768-64 14356 83565 ns/op 392.13 MB/s
BenchmarkPlainEncodingBoolean/len_65536-64 7149166811 ns/op 392.88 MB/s
```
Get 7% ~ 40% performance uplift.
Tests in parquet/internal/encoding:
```
ARM_ENABLE_EXT=NEON go test
PASS
ok github.com/apache/arrow/go/v7/parquet/internal/encoding 9.949s
```
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