> This PR suggests we add a vectorized equalsIgnoreCase benchmark to the set of > benchmarks in `org.openjdk.bench.jdk.incubator.vector`. This benchmark serves > as an example of how vectorization can be useful also in the area of text > processing. It takes advantage of the fact that ASCII and Latin-1 were > designed to optimize case-twiddling operations. > > The code came about during the work on #12632, where vectorization was deemed > out of scope. > > Benchmark results: > > > Benchmark (size) Mode Cnt Score Error > Units > EqualsIgnoreCaseBenchmark.scalar 16 avgt 15 21.575 ± 0.365 > ns/op > EqualsIgnoreCaseBenchmark.scalar 32 avgt 15 43.199 ± 2.786 > ns/op > EqualsIgnoreCaseBenchmark.scalar 64 avgt 15 71.389 ± 0.891 > ns/op > EqualsIgnoreCaseBenchmark.scalar 128 avgt 15 146.827 ± 1.115 > ns/op > EqualsIgnoreCaseBenchmark.scalar 1024 avgt 15 1062.759 ± 9.331 > ns/op > EqualsIgnoreCaseBenchmark.vectorized 16 avgt 15 21.483 ± 0.121 > ns/op > EqualsIgnoreCaseBenchmark.vectorized 32 avgt 15 10.538 ± 0.125 > ns/op > EqualsIgnoreCaseBenchmark.vectorized 64 avgt 15 13.182 ± 0.177 > ns/op > EqualsIgnoreCaseBenchmark.vectorized 128 avgt 15 19.192 ± 0.421 > ns/op > EqualsIgnoreCaseBenchmark.vectorized 1024 avgt 15 92.521 ± 3.494 > ns/op
Eirik Bjorsnos has updated the pull request incrementally with one additional commit since the last revision: Add whitespace after if ------------- Changes: - all: https://git.openjdk.org/jdk/pull/12790/files - new: https://git.openjdk.org/jdk/pull/12790/files/29b213c3..d4802538 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=12790&range=07 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12790&range=06-07 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/12790.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12790/head:pull/12790 PR: https://git.openjdk.org/jdk/pull/12790
