RFR: 8267928: Loop predicate gets inexact loop limit before PhaseIdealLoop::rc_predicate

[Yi Yang]

On Thu, 10 Jun 2021 02:43:47 GMT, Dean Long <dlong at openjdk.org> wrote:

> This is a P4 and Rampdown Phase One starts tomorrow, June 10 at 15:00 UTC.
> https://mail.openjdk.java.net/pipermail/jdk-dev/2021-June/005660.html
> Progress on this seems to have paused, so I plan to retarget this to 18.

Thank you @dean-long, it's not so much important, please feel free to retarget it (and others).

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PR: https://git.openjdk.java.net/jdk/pull/4247