RFR: 8342963: TestLargeStub::testUpcall doesn't test upcalls stubs

[Maurizio Cimadamore]

On Thu, 24 Oct 2024 18:29:18 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> We were made aware of the fact the `TestLargeStub::testUpcall` was not actually calling `Linker::upcallStub`. This PR addresses that issue.

Marked as reviewed by mcimadamore (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/21691#pullrequestreview-2394980975