[jdk21u-dev] RFR: 8321308: AArch64: Fix matching predication for cbz/cbnz

Thu Aug 22 09:26:03 UTC 2024

On Wed, 21 Aug 2024 21:31:34 GMT, Boris Ulasevich <bulasevich at openjdk.org> wrote:

> Clean backport to improve aarch code generation for array length `if (a.length > 0)`
> 
> Testing: jtreg tier1-3 on linux-aarch64.

We should not backport about anything to JDK 21. Especially when it comes to performance improvements. This P4 enhancement doesn't strike me as anything important enough for a stable update release. Let's be more diligent with performance enhancements. You may consider backporting to 23u.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/940#issuecomment-2304192202