Integrated: 8256406: G1 x86 C1/Interpreter post write barrier always uses 32 bit to access variable sized PtrQueue::_index

Thomas Schatzl tschatzl at openjdk.java.net
Fri Nov 20 11:12:06 UTC 2020


On Tue, 17 Nov 2020 12:54:29 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   can I have reviews for this change that fixes benign issues with the G1 C1/interpreter barriers that on x64 only used the lower 32 bit word of the 64 bit PtrQueue::_index member?
> 
> Testing: tier1, linux-x86 builds
> 
> Thanks,
>   Thomas

This pull request has now been integrated.

Changeset: a25fb035
Author:    Thomas Schatzl <tschatzl at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/a25fb035
Stats:     19 lines in 2 files changed: 6 ins; 5 del; 8 mod

8256406: G1 x86 C1/Interpreter post write barrier always uses 32 bit to access variable sized PtrQueue::_index

Reviewed-by: shade

-------------

PR: https://git.openjdk.java.net/jdk/pull/1257


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