Withdrawn: 8316746: Top of lock-stack does not match the unlocked object

[Martin Doerr]

On Tue, 24 Oct 2023 12:19:04 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> In case of OSR compilations, `map()->peek_monitor_obj()` may return the objects in wrong order. We should use the popped object. I'm not changing the code for `LM_LEGACY`. That may be done separately.
> Note that C1 uses the popped object, too: `case Bytecodes::_monitorexit    : monitorexit (apop(), s.cur_bci());`
> 
> This PR is not complete: A lot of C2 code uses the BoxLock. Ideas to solve that are welcome! I think we should get rid of these nodes in the long term because they are only really needed by `LM_LEGACY`.
> The vmTestbase/nsk/jdi/StepEvent tests are passing stable on x64 and ppc64.

This pull request has been closed without being integrated.

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PR: https://git.openjdk.org/jdk/pull/16345