RFR: 8341136: Optimize StackMapGenerator::trimAndCompress

[Chen Liang]

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

Does this bring a speed up in the interpreter or compiled code like C2? Indeed the category 2 long/double primitive types appear rarely, and the majority of methods won't need to change their stacks in compression.

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PR Comment: https://git.openjdk.org/jdk/pull/21227#issuecomment-2380863491