git: openjdk/jdk-sandbox: shen-late-barriers: verify gc barriers; not comprehensive; passing most jtreg tier1 aarch64

[duke]

Changeset: fc4de751
Branch: shen-late-barriers
Author:    Cesar Soares <dcsl at amazon.com>
Date:      2025-11-05 21:06:01 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/fc4de7515dd85359c605eb0c115f5c4f96833a04

verify gc barriers; not comprehensive; passing most jtreg tier1 aarch64

! .gitignore
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.hpp