git: openjdk/jdk17u-dev: 8358334: C2/Shenandoah: incorrect execution with Unsafe

[Roland Westrelin]

Changeset: d97dda5e
Branch: master
Author:    Roland Westrelin <roland at openjdk.org>
Date:      2025-09-09 08:11:19 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/d97dda5e80b70dafb9ebf13b8a9525b93c57cefa

8358334: C2/Shenandoah: incorrect execution with Unsafe

Reviewed-by: phh, shade
Backport-of: 23069e9163c4d416aa9861bc0c7beb37a71dbfa7

! src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.hpp
+ test/hotspot/jtreg/gc/shenandoah/compiler/TestLostAntiDependencyAtExpansion.java