[erlang-bugs] hipe_mfait_lock

[Louis-Philippe Gauthier]

Hi erlang-bugs,
I couple of months ago I tried running our full application using HiPE. I
ran into several issues, some manageable, some not... The most problematic
issue was due to locking, specifically, the hipe_mfait_lock (you can see
the lock counter output in the gist bellow).

https://gist.github.com/lpgauth/2b3220f4bceeed6f62d0

Looking at the code it's obvious that this is a known problem... the
following comment was added when the lock was added in 2010.

"XXX: Redesign apply et al to avoid those updates."
https://github.com/erlang/otp/blob/maint/erts/emulator/hipe/hipe_bif0.c#L1218

Unfortunately, I'm don't know the runtime enough to start patching it... so
instead I'm reporting it.

Thanks,
LP
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