[jdk21u] RFR: 8316414: C2: large byte array clone triggers "failed: malformed control flow" assertion failure on linux-x86

Wed Oct 25 16:00:01 UTC 2023

Clean backport to fix the C2 corner case.

Additional testing:
 - [x] New regression test passes _even with the patch_
 - [ ] Linux x86_64 fastdebug, `tier1 tier2 tier3`

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Commit messages:
 - Backport 0a3a925ad88921d387aa851157f54ac0054d347b

Changes: https://git.openjdk.org/jdk21u/pull/292/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=292&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316414
  Stats: 49 lines in 2 files changed: 48 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u/pull/292.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/292/head:pull/292

PR: https://git.openjdk.org/jdk21u/pull/292