[9] Review Request: 8140266 Performance loss between jdk8 and jdk9 on Maskfill

[Sergey Bylokhov]

Hello.
Please review the small fix for jdk9.
The change add an additional gcc option to the libawt lib to improve some graphics operations: 20%.

This option is a part of -03.
> -fgcse-after-reload
>  <>When -fgcse-after-reload is enabled, a redundant load elimination pass is performed after reload. The purpose of this pass is to clean up redundant spilling.
https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html

Note that if -03 will be enabled directly via OPTIMIZATION flag then the performance will not be improved.

Bug: https://bugs.openjdk.java.net/browse/JDK-8140266
Webrev can be found at: http://cr.openjdk.java.net/~serb/8140266/webrev.00