[jdk21u-dev] RFR: 8332959: C2: ZGC fails with 'Incorrect load shift' when invoking Object.clone() reflectively on an array

[Martin Doerr]

Clean backport of [JDK-8332959](https://bugs.openjdk.org/browse/JDK-8332959).

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Commit messages:
 - Backport e0ac8249f54222cc5efe49d5ed1068fed3073ba0

Changes: https://git.openjdk.org/jdk21u-dev/pull/706/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=706&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332959
  Stats: 41 lines in 2 files changed: 37 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/706.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/706/head:pull/706

PR: https://git.openjdk.org/jdk21u-dev/pull/706