[master] RFR: Implement non-racy fast-locking

[Roman Kennke]

On Tue, 26 Jul 2022 17:13:57 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> +  mov(R0, Robj);
> +  call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), R0);

Thanks for testing it! I applied the suggested change.

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PR: https://git.openjdk.org/lilliput/pull/51