RFR: 8341415: Optimize RawBytecodeHelper::next

[Chen Liang]

On Wed, 2 Oct 2024 07:53:44 GMT, Shaojin Wen <swen at openjdk.org> wrote:

> A small optimization to the RawBytecodeHelper::next method
> * Remove `len <= 0` once
> * merge store opcode and isWide

Marked as reviewed by liach (Reviewer).

This patch is neutral for startup benchmark. Good if it improves the repeated JMH benchmarks.

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PR Review: https://git.openjdk.org/jdk/pull/21300#pullrequestreview-2344188871
PR Comment: https://git.openjdk.org/jdk/pull/21300#issuecomment-2389783496