RFR: 8325495: C2: implement optimization for series of Add of unique value

Thu Aug 29 16:49:19 UTC 2024

On Thu, 29 Aug 2024 11:06:21 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> The existing test compiler/c2/TestLargeTreeOfSubNodes.java times out...

I'm currently investigating this. The test is unrolled and produces a chained subtraction of ~180 nodes and causing performance regression. This will take a little bit of time.

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PR Comment: https://git.openjdk.org/jdk/pull/20754#issuecomment-2318347858