[7u-dev] Request for approval: 8038440: backport few C2 fixes

Seán Coffey sean.coffey at oracle.com
Wed Apr 9 10:04:35 UTC 2014


Poonam,

Looks like 8038440 is non-applicable for JDK 8u and JDK 9 then. Can you 
add the 8-na label (and perhaps a noreg-* label) to bug report ?

Approved for jdk7u-dev.

regards,
Sean.

On 09/04/14 02:20, Poonam Bajaj wrote:
> Hi,
> This is a request to integrate fix for 8038440  to JDK7u-dev.:
>
> Bug: JDK-8038440 <https://bugs.openjdk.java.net/browse/JDK-8038440>: 
> backport few C2 fixes
> Webrev: http://cr.openjdk.java.net/~poonam/8038440/webrev.01/
>
> These changes backport few C2 fixes to 7u. Changes backported:
> 1. Move disabling UseOptoBiasInlining after the last change to 
> UseBiasedLocking in src/share/vm/runtime/arguments.cp.
> 2. In OptoRuntime::new_named_counter() in 
> src/share/vm/opto/runtime.cpp file, cmpxchg may fail first time when 
> new named
> counter is added. It triggers assert in set_next() because _next is 
> set already. Fix it by resetting _next for each attempt.
>
> Code Reviewed by:
> Vladimir Kozlov , Kevin Walls
>
> Testing:
> JPRT
>
> Thanks,
> Poonam
>



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