[8u] backport of 8054478 and 8066045

[Roland Westrelin]

Thanks for the review, Vladimir.

Roland.

> On Dec 2, 2014, at 12:05 AM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> Good. Create backport CR (8u60) for 8065965.
> 
> Thanks,
> Vladimir
> 
> On 12/1/14 1:44 PM, Roland Westrelin wrote:
>> 8u backport request. 8054478 was pushed to jdk9 last week. 8066045 is a trivial fix because of a few failures 8054478 caused during nightly testing.
>> 
>> 8054478 doesn’t apply cleanly to 8u.
>> https://bugs.openjdk.java.net/browse/JDK-8054478
>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/49dd956bc8c0
>> 
>> Webrev with the change merged into 8u:
>> http://cr.openjdk.java.net/~roland/8054478/webrev.8u/
>> 
>> (castnode.[ch]pp don’t exist in 8u, allocation of node with new needs to be passed Compile object)
>> 
>> 8066045 applies cleanly
>> https://bugs.openjdk.java.net/browse/JDK-8066045
>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/8394c315d83a
>> 
>> Note: 8054478 causes a performance regression:
>> https://bugs.openjdk.java.net/browse/JDK-8065965
>> 
>> Roland.
>>