RFR: 8340587: Optimize StackMapGenerator$Frame::checkAssignableTo

[Chen Liang]

On Sun, 22 Sep 2024 13:20:01 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> Optimize checkAssignableTo to avoid clone when stackSize is 0, and use clone instead of Array.copyOf to avoid compression and then expansion

Thanks for this cleanup! Tests pass.

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Marked as reviewed by liach (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21121#pullrequestreview-2325652447