[aarch64-port-dev ] RFR: 8148240: random infrequent null pointer exceptions in javac

[Edward Nevill]

Hi,

Please review the following webrev

http://cr.openjdk.java.net/~enevill/8148240/webrev/

Jira issue: https://bugs.openjdk.java.net/browse/JDK-8148240

The patch simply works around the issue by disabling FP as an allocatable register.

Thanks,
Ed.