[Bug 3774] New: [IcedTea7] Backport latest AArch64 fixes to release branch for 2.6.21

[bugzilla-daemon at icedtea.classpath.org]

https://icedtea.classpath.org/bugzilla/show_bug.cgi?id=3774

            Bug ID: 3774
           Summary: [IcedTea7] Backport latest AArch64 fixes to release
                    branch for 2.6.21
           Product: IcedTea
           Version: 2.x-hg
          Hardware: aarch64
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: IcedTea
          Assignee: gnu.andrew at redhat.com
          Reporter: gnu.andrew at redhat.com
                CC: unassigned at icedtea.classpath.org

Recent 8u backports may be applicable to the 7 code as well:

changeset:   11415:09d4b646f756
parent:      11398:02145a45eff6
user:        fyang
date:        Tue Nov 12 17:54:52 2019 +0800
summary:     8233839: aarch64: missing memory barrier in NewObjectArrayStub and
NewTypeArrayStub

changeset:   11513:9495a9f80d99
user:        aph
date:        Thu Sep 24 12:04:57 2015 +0200
summary:     8135018: AARCH64: Missing memory barriers for CMS collector

The following requires the optimisation of volatile puts/gets which is not
present in IcedTea 2.x:

changeset:   11398:02145a45eff6
user:        roland
date:        Mon Nov 05 12:53:55 2018 +0100
summary:     8209835: Aarch64: elide barriers on all volatile operations

changeset:   8823:17b38ca19e23
user:        adinn
date:        Thu Oct 08 11:06:07 2015 -0400
summary:     Backport optimization of volatile puts/gets and CAS to use
ldar/stlr

The following supports mainline 8073108 support which is not present in 7u:

changeset:   11535:c81fd2ed614a
tag:         aarch64-shenandoah-jdk8u242-b07
user:        ascarpino
date:        Mon Jan 13 05:52:26 2020 +0000
summary:     8073108: [AArch64] Use x86 and SPARC CPU instructions for GHASH
acceleration

Equivalent of bug 2852, bug 3204, bug 3320, bug 3521, bug 3669, bug 3726 and
bug 3772 for earlier IcedTea 2.x releases.

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