[jdk16u] RFR: 8259619: C1: 3-arg StubAssembler::call_RT stack-use condition is incorrect

[Tobias Hartmann]

On Mon, 1 Feb 2021 16:00:10 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Backport of [JDK-8259619](https://bugs.openjdk.java.net/browse/JDK-8259619). Applies cleanly.
>
> Good.

Thanks for the reviews, Vladimir and Vladimir!

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PR: https://git.openjdk.java.net/jdk16u/pull/12