RFR: 8274299: Make Method/Constructor/Field accessors @Stable

[Claes Redestad]

On Mon, 27 Sep 2021 19:59:00 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> One thing I'm puzzling is why the performance result is better but `java.lang.reflect` is not in the TNSFF package list.

I think for deciding if a field can be treated as constant, `@Stable` has equal weight as a final in a TNSFF package, see https://github.com/openjdk/jdk/blob/master/src/hotspot/share/ci/ciField.cpp#L287

Adding java/lang/reflect to the trusted package list seem reasonable, though.

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PR: https://git.openjdk.java.net/jdk/pull/5694