RFR: 8218885: Restore pop_frame and force_early_return functionality for Graal

[Dean Long]

On Wed, 22 Sep 2021 05:40:40 GMT, Tom Rodriguez <never at openjdk.org> wrote:

> This logic no longer seems to be necessary since the adjustCompilationLevel callback has been removed.

Marked as reviewed by dlong (Reviewer).

Make sure to test with -Xcomp.

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PR: https://git.openjdk.java.net/jdk/pull/5625