RFR 8231264: Disable biased-locking and deprecate all flags related to biased-locking

[Robbin Ehn]

Looks, good, thanks!

/Robbin

On 11/16/19 3:15 AM, Patricio Chilano wrote:
> Hi all,
> 
> Could you review the following patch?
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8231264
> Webrev: http://cr.openjdk.java.net/~pchilanomate/8231264/v01/webrev
> 
> Biased locking will be disabled by default and all related flags will be 
> deprecated. Performance gains seen when the feature was introduced in the VM are 
> less clear today with modern Java code/processors. Detailed rationale behind the 
> change is included on the description of the bug.
> 
> I modified test gtest/oops/test_markWord.cpp so that it still exercises other 
> cases of markword printing.
> 
> Tested with mach5, tiers1-6 on all platforms (Linux, macOS, Windows and Solaris).
> 
> Thanks,
> Patricio
> 
>