[aarch64-port-dev ] RFR: JDK-8185786: AArch64: disable some address reshapings.

[Andrew Dinn]

On 04/08/17 10:48, Zhongwei Yao wrote:
> Bug:
> https://bugs.openjdk.java.net/browse/JDK-8185786/
> 
> Webrev:
> http://cr.openjdk.java.net/~njian/8185786/webrev.00/
> 
>   ...
> 
> There are about 10% performance improvement after applying this patch
> in above case.
> 
> And this patch passes all jtreg tests.
> 
> Please help to review it.
The patch looks good and it appears to cause no harm for other CPUs. I
would prefer to hear what Andrew Haley's views on special casing code
for specific CPUs before accepting it.

Also, do you know if A57/A72 are the only CPUs which benefit from this
change?

regards,


Andrew Dinn
-----------
Senior Principal Software Engineer
Red Hat UK Ltd
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