RFR: fix shenandoah store checks and implicit null checks on aarch64

[Andrew Haley]

On 22/06/17 20:20, Roland Westrelin wrote:
> That doesn't work because stop() is apparently emitted in stubs that
> don't support relocation. What about this:
> 
> http://cr.openjdk.java.net/~roland/shenandoah/aarch64-storecheck-nullcheck/webrev.01/

OK, but please say "we use movptr rather than mov here because we need
code size not to depend..."

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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