RFR: 8136524: aarch64: test/compiler/runtime/7196199/Test7196199.java fails

[Edward Nevill]

Hi,

Please review the following webrev

http://cr.openjdk.java.net/~enevill/8136524/webrev/

JIRA issue: https://bugs.openjdk.java.net/browse/JDK-8136524

This fixes an issue whereby on a SEGV caused by a SafePoint in a vector loop only the bottom 64 bits of the SIMD/FP registers were being saved instead of the full 128 bits.

This patch was contributed by felix.yang at linaro.org

I have verified that this patch fixes the issue on one of our partner HW.

I have also run jtreg hotspot and langtools. Results before and after were identical on another partner HW.

Hotspot: Test results: passed: 898; failed: 1; error: 10
Langtools: Test results: passed: 3,265

Thanks for your help!
Ed.