[8u20] backport RFR (XL) 8031320: Use Intel RTM instructions for locks

[Vladimir Kozlov]

Thank you, Dan

Vladimir

On 3/25/14 6:10 AM, Daniel D. Daugherty wrote:
> Also thumbs up on the backport plan.
>
> Dan
>
>
> On 3/25/14 12:30 AM, Igor Veresov wrote:
>> Sounds good.
>>
>> igor
>>
>> On Mar 24, 2014, at 11:16 PM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
>>
>>> These changes were pushed into jdk9 last week.
>>> Changes from jdk9 applied to 8u without conflicts but I have to modify flags because this optimization will be only
>>> experimental in 8u20: all RTM flags in globals_x86.hpp are experimental for 8u20 (in jdk9 3 main flags were product).
>>>
>>> http://cr.openjdk.java.net/~kvn/8031320_8u/webrev/
>>>
>>> https://bugs.openjdk.java.net/browse/JDK-8031320
>>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/2f459c5235f9
>>> http://cr.openjdk.java.net/~kvn/8031320_9/webrev/
>>>
>>> I also will backport additional related small fixes:
>>>
>>> https://bugs.openjdk.java.net/browse/JDK-8038181
>>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/7067df8672a0
>>>
>>> https://bugs.openjdk.java.net/browse/JDK-8038286
>>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/2c76e6e9c04e
>>>
>>> Thanks,
>>> Vladimir
>