[vector] RFR 8221816: IndexOutOfBoundsException for fromArray/intoArray with unset mask lanes - was: RE: IndexOutOfBoundsException with unset mask lanes

[Joshua Zhu (Arm Technology China)]

Hi,

JBS: https://bugs.openjdk.java.net/browse/JDK-8221816
Webrev: http://cr.openjdk.java.net/~jzhu/vectorapi/8221816.OOB/webrev.00/

(This is a rebase of original webrev [1].)

I have a patch to fix IndexOutOfBoundsException for 
fromArray/intoArray/gather/scatter API with unset mask lanes.
To align with API doc, IndexOutOfBoundsException should only be thrown for
any illegal vector lane index where the mask at lane is set.

Also I write a template to generate test cases to cover this kind of exception testing.

This patch has been verified by testing.

[1] http://mail.openjdk.java.net/pipermail/panama-dev/2019-March/004812.html

Best Regards,
Joshua Zhu