RFR: heapbase register can be allocated in compressed mode

[Andrew Haley]

On 4/20/20 5:32 AM, Pengfei Li wrote:
> Maybe Andrew Haley or other AArch64 reviewers can help?
> 
> [1] http://cr.openjdk.java.net/~wzhuo/8242449/webrev.01/

It's fine. At some point in the future maybe we can get round to taking
out all references to rheapbase, but it'll require careful thinking about
JVMCI and Graal-precompiled code.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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