RFR: 8258625: [JVMCI] refactor and unify JVMCI readFieldValue path

Mon Apr 26 19:25:34 UTC 2021

On Fri, 23 Apr 2021 18:39:11 GMT, Tom Rodriguez <never at openjdk.org> wrote:

> This was originally just a cleanup but it turned out to be a partial safety fix for folding reads during compilation.  I've rolled in a couple other safety checks that were found along the way, along with jtreg test improvements that exercise the new paths.

LGTM.

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PR: https://git.openjdk.java.net/jdk/pull/3659