RFR(M): PPC64: improve array copy stubs by using vector instructions

[Doerr, Martin]

Hi Gustavo,

thanks for implementing it and taking care of my concerns. Looks good, now.
I will run tests and I can sponsor it after it was reviewed.

Best regards,
Martin

-----Original Message-----
From: Gustavo Romero [mailto:gromero at linux.vnet.ibm.com] 
Sent: Montag, 23. Mai 2016 16:22
To: Doerr, Martin <martin.doerr at sap.com>; ppc-aix-port-dev at openjdk.java.net; hotspot-dev at openjdk.java.net
Cc: Simonis, Volker <volker.simonis at sap.com>; brenohl at br.ibm.com
Subject: RFR(M): PPC64: improve array copy stubs by using vector instructions

Hi Martin

Could you please host and review this webrev?

Summary:

* Add VSR registers to be used with VSX instruction set;
* Add VSX load/store instructions (lxvd2x/stxvd2x) to mass copy in
  the stub for disjoint short copy in order to improve it.

http://81.de.7a9f.ip4.static.sl-reverse.com./8154156/9/v4/

Thank you!

Best regards,
Gustavo