RFR: 8308469: [PPC64] Implement alternative fast-locking scheme [v2]

[Martin Doerr]

On Thu, 25 May 2023 16:56:37 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> src/hotspot/cpu/ppc/interp_masm_ppc_64.cpp line 1101:
>> 
>>> 1099:       // must handle it.
>>> 1100:       Register tmp = current_header;
>>> 1101:       // First check for lock-stack underflow.
>> 
>> I wonder why this is not done on x86? It's better to have that check.
>
> Strange. The other platforms have it.

@rkennke: Do you know why this is different on x86?

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/14069#discussion_r1206492779