RFR(XXS) 8057750: CTW should not make MH intrinsics not entrant

[Albert]

Hi Igor,

why are we not allowed to make MH intrinsics not entrant just after 
we've compiled them?
Is this requirement specific to CTW?
We do not seem to have such a check in sweeper.cpp, i.e., MH instrinsics 
are made not-entrant
in NMethodSweeper::possibly_flush().

Best,
Albert

On 09/08/2014 08:02 AM, Igor Veresov wrote:
> Follow-up to 8056154. CTW makes methods that were just compiled not entrant, which in case of MH intrinsics violates the invariant.
>
> Webrev: http://cr.openjdk.java.net/~iveresov/8057750/webrev.00/
>
> Thanks!
> igor