[8u] RFR for backport of 8154156: PPC64: improve array copy stubs by using vector instructions

[Kazunori Ogata]

Hi,

Ping.  Can anyone review this enhancement backport request?

Regards,
Ogata


Kazunori Ogata/Japan/IBM wrote on 2018/12/18 23:41:16:

> From: Kazunori Ogata/Japan/IBM
> To: hotspot-compiler-dev at openjdk.java.net, 
ppc-aix-port-dev at openjdk.java.net
> Date: 2018/12/18 23:41
> Subject: [8u] RFR for backport of 8154156: PPC64: improve array copy 
stubs
> by using vector instructions
> 
> Hi,
> 
> May I get review for enhancement backport of 8154156: PPC64: improve 
array
> copy stubs by using vector instructions?
> 
> To make this patch buildable (and usable by other planned backports 
listed
> in [1]), I cherry picked config_dscr() and its dependent code from [2,3] 

> and has_mfdscr() from [4].
> 
> Original patch: http://hg.openjdk.java.net/jdk/jdk/rev/c9d756fa846e
> Weberv: 
http://cr.openjdk.java.net/~horii/jdk8u_aes_be/8154156/webrev.01/
> 
> I confirmed it was buildable for both relase and fastdebug builds, and 
> JTREG caused no degradation.
> 
> Refs:
> [1] 
http://mail.openjdk.java.net/pipermail/ppc-aix-port-dev/2018-December/
> 003818.html
> [2] 8149655: PPC64: Implement CompactString intrinsics
>     http://hg.openjdk.java.net/jdk/jdk/rev/6241574f5982
> [3] 8080684: PPC64: Fix little-endian build after "8077838: Recent 
> developments for ppc"
>     http://hg.openjdk.java.net/jdk/jdk/rev/12ccf8b26eb0 
> [4] 8077838: Recent developments for ppc.
>     http://hg.openjdk.java.net/jdk/jdk/rev/c703c89fddbf
> 
> Regards,
> Ogata