This is a JMH benchmark comparing different ways of checking for a set high-bit using jdk.incubator.vector.ByteVector
docker build -t isascii .
docker run isascii
Icelake Intel(R) Xeon(R) Platinum 8375C CPU (AVX-512)
| Benchmark |
Mode |
Cnt |
Score |
Error |
Units |
| ByteVectorCompareMaskAnyTrue |
thrpt |
8 |
31.860 |
0.432 |
ops/s |
| ByteVectorCompareMaskToLong |
thrpt |
8 |
32.210 |
0.232 |
ops/s |
| ByteVectorLaneReduction |
thrpt |
8 |
27.199 |
0.279 |
ops/s |
| Scalar |
thrpt |
8 |
11.941 |
0.011 |
ops/s |
Graviton3 (ARM NEON 128bit)
| Benchmark |
Mode |
Cnt |
Score |
Error |
Units |
| ByteVectorCompareMaskAnyTrue |
thrpt |
8 |
40.023 |
±0.095 |
ops/s |
| ByteVectorCompareMaskToLong |
thrpt |
8 |
18.831 |
±0.010 |
ops/s |
| ByteVectorLaneReduction |
thrpt |
8 |
24.993 |
±0.020 |
ops/s |
| Scalar |
thrpt |
8 |
10.669 |
±0.043 |
ops/s |
Haswell Intel(R) Xeon(R) CPU E5-2666 v3 @ 2.90GHz (256bit)
| Benchmark |
Mode |
Cnt |
Score |
Error |
Units |
| ByteVectorCompareMaskAnyTrue |
thrpt |
8 |
17.622 |
± 0.216 |
ops/s |
| ByteVectorCompareMaskToLong |
thrpt |
8 |
18.084 |
± 0.201 |
ops/s |
| ByteVectorLaneReduction |
thrpt |
8 |
15.680 |
± 0.117 |
ops/s |
| Scalar |
thrpt |
8 |
9.381 |
± 0.020 |
ops/s |