[8u] RFR 8166140: C1: Possible integer overflow in LIRGenerator::generate_address on several platforms

[Hohensee, Paul]

Lgtm.

Thanks,
Paul

-----Original Message-----
From: jdk8u-dev <jdk8u-dev-retn at openjdk.java.net> on behalf of Zhengyu Gu <zgu at redhat.com>
Date: Tuesday, January 25, 2022 at 11:59 AM
To: jdk8u-dev <jdk8u-dev at openjdk.java.net>
Subject: [8u] RFR 8166140: C1: Possible integer overflow in LIRGenerator::generate_address on several platforms

I would like to backport this patch to 8u for parity with Oracle 8u331.

Bug: https://bugs.openjdk.java.net/browse/JDK-8166140
Patch: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/f6c1ea29110e

The patch applies mostly cleanly, except ppc does not have compiler port
in 8u.

8u webrev: http://cr.openjdk.java.net/~zgu/JDK-8166140-8u/webrev.00/

Test:
   compiler tests on Linux x86_64 and aarch64

Thanks,

-Zhengyu