[15] RFR 8250588: Shenandoah: LRB needs to save/restore fp registers for runtime call

[Roman Kennke]

Hi Zhengyu,

the patch looks good to me!

Thank you,
Roman


Zhengyu Gu <zgu at redhat.com> schrieb am So., 26. Juli 2020, 01:15:

> We recently experienced some test failures with
> VarHandleTestMethodHandleAccessDouble.java and
> VarHandleTestMethodHandleAccessfloat.java, where appeared to have
> corrupted fp registers.
>
> It turns out that we have to save fp registers in LRB when making
> runtime calls.
>
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8250588
> Weberev: http://cr.openjdk.java.net/~zgu/JDK-8250588/webrev.00/
>
> Test:
>    hotspot_gc_shenandoah
>    tier1 with Shenandoah
>
>
> Thanks,
>
> -Zhengyu
>
>