[jdk17u-dev] RFR: 8325372: Shenandoah: SIGSEGV crash in unnecessary_acquire due to LoadStore split through phi

[Dan Lutker]

Backport tto 17 which also has the issue. Ran tier1, 2, 3, 4 on linux aarch64 with -XX:+UseShenandoahGC as well as jcstress quick.

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Commit messages:
 - Merge branch 'openjdk:master' into backport-lutkerd-5d414da5
 - Backport 5d414da50459b7a1e6f0f537ff3b318854b2c427

Changes: https://git.openjdk.org/jdk17u-dev/pull/2259/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2259&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325372
  Stats: 100 lines in 4 files changed: 99 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2259.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2259/head:pull/2259

PR: https://git.openjdk.org/jdk17u-dev/pull/2259