RFR: 8259849: Shenandoah: Rename store-val to IU-barrier [v2]

[Aleksey Shipilev]

On Mon, 18 Jan 2021 13:31:58 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

> Right. Those should be fixed now. Only remaining GHA failure is Windows:
> 
> configure: error: Could not find a C compiler.
> Do you know what's up there?

Known issue: https://bugs.openjdk.java.net/browse/JDK-8259679

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PR: https://git.openjdk.java.net/jdk/pull/2104