RFR: 8255579: x86: Use cmpq(Register, Address) in safepoint_poll [v2]

[Aleksey Shipilev]

On Thu, 29 Oct 2020 10:11:14 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:
>> 
>>  - Merge branch 'master' into JDK-8255579-safepoint-poll
>>  - 8255579: x86: Use cmpq(Register,Address) in safepoint_poll
>
> Marked as reviewed by eosterlund (Reviewer).

Tests look clean. Pushing, thanks @fisk, @zhengyu123.

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PR: https://git.openjdk.java.net/jdk/pull/924