RFR: 8007446: Add /MP to cl.exe speeds up windows builds of OpenJDK.

[Christian Tornqvist]

Looks good, many thanks for fixing this!

Thanks,
Christian

On Oct 3, 2013, at 5:01, Erik Joelsson <erik.joelsson at oracle.com> wrote:

> Please review this simple patch adding /MP to the windows cl.exe command lines when supported. In my tests, the speed improvement is around 40% on the hotspot part of the build on the Stockholm jprt queue and my local build. This is really low hanging fruit for build speed improvements.
> 
> http://cr.openjdk.java.net/~erikj/8007446/webrev.hotspot.01/
> 
> I will also need a sponsor to push this for me if review is passed.
> 
> /Erik