RFR: 8255886: Shenandoah: Avoid register clash when calling LRB-runtime from interpreter [v5]

[Aleksey Shipilev]

On Wed, 4 Nov 2020 18:30:08 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

>> JDK-8255762 caused test failure on Windows because of overlapping argument registers in the LRB runtime call. The problem is more general, though, but hasn't manifested anywhere else.
>> 
>> Testing: hotspot_gc_shenandoah (linux: x86_64, x86_32, windows: x86_64)
>
> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Some touch-ups

Looks good. Please rename the bug and PR to capture the cset check changes. Suggestion: "Shenandoah: Resolve cset address truncation and register clash in interpreter LRB"

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Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1054