RFR: 8265035: Remove unneeded exception check from refill_ic_stubs()

[Harold Seigel]

On Mon, 12 Apr 2021 14:46:02 GMT, Patricio Chilano Mateo <pchilanomate at openjdk.org> wrote:

> Hi,
> 
> Please review this small fix. The HAS_PENDING_EXCEPTION check will always return false since EXCEPTION_MARK will check that there are no pending exceptions upon entering and VMThread::execute() doesn't throw exceptions.
> The comment says that we could get a potential async exception, which is true, since the JT will be blocked waiting on VMOperation_lock. However delivering an async exception doesn't set the _pending_exception field, only additional fields (see JavaThread::send_thread_stop() -> set_pending_async_exception()) that will be later check in check_and_handle_async_exceptions() and only then _pending_exception will be set.
> 
> Thanks,
> Patricio

The changes look good.  Were regression tests run?
Thanks, Harold

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Marked as reviewed by hseigel (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3436