HotSpot 17 merge

[Erik Trimble]

Andrew John Hughes wrote:
> On 16 May 2010 18:22, Andrew Haley <aph at redhat.com> wrote:
>   
>> On 05/16/2010 05:14 PM, Andrew John Hughes wrote:
>>     
>>> The webrev is here:
>>>
>>> http://cr.openjdk.java.net/~andrew/jdk6-hs17-merge/
>>>
>>> I'd also like to revert:
>>>
>>> 6909480: Disable Escape Analysis in jdk 6u18
>>> http://hg.openjdk.java.net/hsx/hsx16/master/rev/4ebd3f8407eb
>>>
>>> which isn't present in hs17 (and so remains a difference between jdk6
>>> and hs17) as, unlike jdk6's version, hs17 is based on the main HotSpot
>>> tree rather than the hs16 master.  I didn't include this in the merge
>>> because it's clearer what's going on if it appears as a separate
>>> change.
>>>       
>> Ahh, good catch.
>>
>> Do we have any idea why escape analysis is disabled?
>>
>> Andrew.
>>
>>     
>
> I assume it wasn't stable enough in hs16, but the bug isn't visible.
> Can someone from the HotSpot team shed more light on this?
>   
http://hg.openjdk.java.net/hsx/hsx17/master/rev/357d4e2eb4dd

this changeset turns EA on.  It was putback at hs17-b01, so it's never 
been enabled in HS16 or before.

EA was on for all of HS17 testing, and we've been working on it, but 
it's /just/ not quite production-ready, and the decision was made to not 
spend the effort to try and fix it in HS17. We're hoping to get it fully 
fixed in the current HS.

-- 
Erik Trimble
Java System Support
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