RFR: 8309665: Simplify Arrays.copyOf/-Range methods
Claes Redestad
redestad at openjdk.org
Thu Jun 8 15:15:19 UTC 2023
https://bugs.openjdk.org/browse/JDK-8301958 and later changes improved Arrays.copyOf/-Range methods to improve peak performance in microbenchmarks when copying the entire array, but it's resulted in a few lurking footprint benchmark issues that come down to incurring slightly more JIT activity. As a partial remedy I propose simplifying the implementation so that no new methods are added compared to the JDK 20 baseline. This patch maintains the microbenchmark speed-up from JDK-8301958 while reducing JIT compilations in startup/footprint benchmarks.
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Commit messages:
- Merge branch 'master' into 8309665
- 8309665: Simplify Array.copyOf/-Range methods
Changes: https://git.openjdk.org/jdk/pull/14380/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14380&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8309665
Stats: 105 lines in 1 file changed: 25 ins; 62 del; 18 mod
Patch: https://git.openjdk.org/jdk/pull/14380.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/14380/head:pull/14380
PR: https://git.openjdk.org/jdk/pull/14380
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