RFR: 8256536: Newer AMD 19h (EPYC) Processor family defaults

[Vladimir Kozlov]

On Wed, 18 Nov 2020 10:36:03 GMT, Rohit Arul Raj <rraj at openjdk.org> wrote:

> This patch sets the following flags as defaults for newer AMD 19h (EPYC) processors.
>       bool UseFPUForSpilling               = true   
>       bool UseUnalignedLoadStores    = true   
>       bool UseXMMForArrayCopy        = true   
>       bool UseXMMForObjInit             = true   
>       bool UseFastStosb                       = false  
>       bool AlignVector                          = false  
> 
> Additional testing: make run-test TEST="tier1 tier2" JTREG="JOBS=128" CONF=linux-x86_64-server-fastdebug
> 
> Please review this change.
> 
> Thanks,
> Rohit

Good.

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1288