RFR: 8341136: Optimize StackMapGenerator::trimAndCompress

[Shaojin Wen]

On Fri, 27 Sep 2024 17:05:25 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> A small optimization to reduce the write operations of trimAndCompress

I saw trimAndCompress in the flame graph of the profile, so I made this optimization. Avoiding write operations here is a very small optimization and will not have a significant improvement. I don’t have Benchmark performance numbers.

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PR Comment: https://git.openjdk.org/jdk/pull/21227#issuecomment-2381072287