On Wed, 8 Feb 2023 10:53:22 GMT, Claes Redestad <redes...@openjdk.org> wrote:
>> This patch adds special-cases to `Arrays.copyOf` and `Arrays.copyOfRange` to >> clone arrays when `newLength` or range inputs span the input array. This >> helps eliminate range checks and has been verified to help various String >> operations. Example: >> >> Baseline >> >> Benchmark (size) Mode Cnt >> Score Error Units >> StringConstructor.newStringFromArray 7 avgt 15 >> 16.817 ± 0.369 ns/op >> StringConstructor.newStringFromArrayWithCharset 7 avgt 15 >> 16.866 ± 0.449 ns/op >> StringConstructor.newStringFromArrayWithCharsetName 7 avgt 15 >> 22.198 ± 0.396 ns/op >> >> Patch: >> >> Benchmark (size) Mode Cnt >> Score Error Units >> StringConstructor.newStringFromArray 7 avgt 15 >> 14.666 ± 0.336 ns/op >> StringConstructor.newStringFromArrayWithCharset 7 avgt 15 >> 14.582 ± 0.288 ns/op >> StringConstructor.newStringFromArrayWithCharsetName 7 avgt 15 >> 20.339 ± 0.328 ns/op > > Claes Redestad has updated the pull request incrementally with one additional > commit since the last revision: > > Add offset param to micro, reduce number of configurations and variants Marked as reviewed by schlo...@github.com (no known OpenJDK username). ------------- PR: https://git.openjdk.org/jdk/pull/12453
