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

[Hohensee, Paul]

Lgtm.

Thanks,
Paul

-----Original Message-----
From: jdk-updates-dev <jdk-updates-dev-retn at openjdk.java.net> on behalf of Dmitry Chuyko <dmitry.chuyko at bell-sw.com>
Date: Monday, March 22, 2021 at 8:10 AM
To: "jdk-updates-dev at openjdk.java.net" <jdk-updates-dev at openjdk.java.net>
Subject: [11u] RFR 8206895: aarch64: rework error-prone cmp instuction

Hello,

Original bug: https://bugs.openjdk.java.net/browse/JDK-8206895

Original patch applies with minor fuzz and requires minor adjustments:
few rejected changes in macroAssembler_aarch64.cpp and
stubGenerator_aarch64.cpp were recreated -- all because of already
ported stuff [1][2][3][4].

11u webrev: http://cr.openjdk.java.net/~dchuyko/8206895/webrev.11u.00/

Testing: tier1, tier2.

[1] https://bugs.openjdk.java.net/browse/JDK-8239787
[2] https://bugs.openjdk.java.net/browse/JDK-8228400
[3] https://bugs.openjdk.java.net/browse/JDK-8205421
[4] https://bugs.openjdk.java.net/browse/JDK-8218966

--
Thanks,
-Dmitry