RFR: 8219006:AArch64: Register corruption in slow subtype check

[Doerr, Martin]

Hi Andrew,

thanks for fixing it. Looks good to me, too.
Unfortunately, we have 2 issues for this: JDK-8218670, JDK-8219006
I can close the first one as duplicate.

I think we can still decide to backport it later if the issue shows up during regular testing.

Best regards,
Martin


-----Original Message-----
From: hotspot-dev <hotspot-dev-bounces at openjdk.java.net> On Behalf Of Andrew Dinn
Sent: Freitag, 15. Februar 2019 11:09
To: Andrew Haley <aph at redhat.com>; hotspot-dev at openjdk.java.net
Subject: Re: RFR: 8219006:AArch64: Register corruption in slow subtype check

On 14/02/2019 18:36, Andrew Haley wrote:
> http://cr.openjdk.java.net/~aph/8219006/
Reviewed.

> Although the bug is present in all AArch64 versions of HotSpot, it
> only affects debug builds because rscratch2 is only used inside code
> guarded by #ifndef PRODUCT. So, I'm not thinking there's any need for
> a backport.

If you also add the qualification that the bug does not manifest very
often then I'll agree to that.

regards,


Andrew Dinn
-----------
Senior Principal Software Engineer
Red Hat UK Ltd
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