On Thu, 19 Sep 2024 14:08:04 GMT, Claes Redestad <redes...@openjdk.org> wrote:
> This PR changes proxy code gen to avoid generating
> `Class.forName("java.lang.Object")`, instead emitting an ldc for the class
> literal, `ldc(CD_Object)`, java code equivalent `Object.class`.
>
> More types could profitably use `ldc(ClassDesc/-Entry)`, taking cues from
> `InvokerBytecodeGenerator.isStaticallyInvocable`, but just addressing the
> `Object` methods gets rid of most `Class.forName` emits. It's not terribly
> important for throughput performance since these are called in the generated
> `clinit`, so getting a quick win with few additional checks is a good
> starting point.
>
> Added a few unrelated minor refactors/improvements, guided by diagnostic runs
> of the now fixed microbenchmark.
Replacing Class.forName with ldc or even condy is an esoteric topic. We can
dive into that later and pick up the obvious gains.
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Marked as reviewed by liach (Reviewer).
PR Review: https://git.openjdk.org/jdk/pull/21090#pullrequestreview-2316431460
