[8u] backport of 8149543: range check CastII nodes should not be split through Phi

[Roland Westrelin]

> This request appears to be for a codereview along with push approval but I don't see a webrev for any changes that occurred in 8u. Does the patch apply cleanly? If so you likely don't need a codereview.
> 
> If the patch doesn't apply cleanly please provide an updated webrev.
> 
> Approved assuming the fix applies cleanly / you get a code review.

The patch does apply cleanly. Sorry for the confusion.

Roland.

> 
> 	-Rob
> 
> On 23/02/16 13:58, Roland Westrelin wrote:
>> Hi,
>> 
>> Please approve and review the following backport to 8u.
>> 
>> 8149543 was pushed to jdk9 a week ago and it hasn’t caused any new failures during nightly testing. The change applies cleanly to 8u.
>> 
>> https://bugs.openjdk.java.net/browse/JDK-8149543
>> http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/a63cf6a69972
>> 
>> Roland.
>>