[11u] RFR: JDK-8206895: aarch64: rework error-prone cmp instuction

[Hohensee, Paul]

Lgtm. I'll take the issue and add a Fix Request (11u) comment for you.

Thanks,
Paul

On 6/11/20, 9:55 AM, "jdk-updates-dev on behalf of Lemmond, Dan" <jdk-updates-dev-bounces at openjdk.java.net on behalf of dlemmond at amazon.com> wrote:

    Hello,

    Please review this backport request for JDK-8206895<https://bugs.openjdk.java.net/browse/JDK-8206895>: aarch64: rework error-prone cmp instruction.

    JBS: https://bugs.openjdk.java.net/browse/JDK-8206895
    Webrev: http://cr.openjdk.java.net/~phh/8206895/webrev.11u.00/
    Original review thread: https://mail.openjdk.java.net/pipermail/hotspot-dev/2018-July/033461.html

    This backport required fixes to three hunks and the omission of one hunk entirely.

    macroAssembler_aarch64.cpp required hunk 19 to be manually applied, and stubGenerator_aarch64.cpp required hunk 7 and 13 to be manually applied.

    I have omitted hunk 15 from the backport as JDK-8218966<https://bugs.openjdk.java.net/browse/JDK-8218966> was backported previously, which overwrites that section with a bug fix.

    The backport compiles without issue and passes all Tier1 Hotspot tests.

    Thanks,
    Dan