[8u] Request for approval: Backport of 8147548: need comprehensive fix for unconstrained ConvI2L with narrowed type

[Tobias Hartmann]

Thanks, Sean.

Best,
Tobias

On 25.01.2016 11:34, Seán Coffey wrote:
> Approved but subject to peer code review before pushing.
> 
> Regards,
> Sean.
> 
> On 25/01/16 09:59, Tobias Hartmann wrote:
>> Hi,
>>
>> please approve and review the following backport to 8u.
>>
>> 8147548: need comprehensive fix for unconstrained ConvI2L with narrowed type
>> https://bugs.openjdk.java.net/browse/JDK-8147548
>> http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-January/020810.html
>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/bfb7a8a004de
>>
>> The fix was pushed to hs-comp on January, 18 and nightly testing showed no problems. Unfortunately, the changes do not apply cleanly to 8u-dev because several enhancements that affect related code were not backported to 8. Here is a new webrev:
>> http://cr.openjdk.java.net/~thartmann/6675699_8u/webrev.00/
>>
>> I did additional performance and correctness testing to verify that the backport works fine and does not introduce a regression.
>>
>> Thanks,
>> Tobias
>