Request for reviews (M): 6954029: Improve implicit null check generation with compressed oops
vladimir.kozlov at oracle.com
Fri May 21 08:36:22 PDT 2010
Thank you, Christian
I fixed typo.
Christian Thalinger wrote:
> On Thu, 2010-05-20 at 18:02 -0700, Vladimir Kozlov wrote:
>> Fixed 6954029: Improve implicit null check generation with compressed oops
>> When DecodeN instruction does not fold into address expression
>> it may prevent implicit null check generation if it is scheduled
>> below the null check since the corresponding memory instruction
>> could not be moved.
>> If needed move DecodeN instruction before null check to generate
>> implicit null check.
>> I also removed code which switch off default COOP usage on N1:
>> currently generated COOP code perform better on N1 (tested jbb2005).
> + assert(UseCompressedOops, "only for comressed oops code");
> ^ typo
> Otherwise (I think) it's OK.
> -- Christian
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