CR for RFR 8154896

Christian Thalinger christian.thalinger at oracle.com
Tue Apr 26 17:11:09 UTC 2016


> On Apr 23, 2016, at 4:14 PM, Berg, Michael C <michael.c.berg at intel.com> wrote:
> 
>  <>Hi Folks,
> 
> I would like to contribute a bug fix for SKX/EVEX code gen.

The bug fix is the change in src/cpu/x86/vm/assembler_x86.cpp, correct?

>   There is a guarantee of isBit(imm8) for jccb which can sometimes fail when upper bank register marshaling is required for instructions without EVEX or conditionally EVEX support on SKX.  This patch address the minimal set of changes which can have this issue.
>  
> This code was tested as follows (see jbs entry below):
> 
> Bug-id: https://bugs.openjdk.java.net/browse/JDK-8154896 <https://bugs.openjdk.java.net/browse/JDK-8154896>
> 
> webrev:
> http://cr.openjdk.java.net/~mcberg/8154896/webrev.01/ <http://cr.openjdk.java.net/~mcberg/8154896/webrev.01/>
>  
> Thanks,
> Michael

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