[jdk26] RFR: 8374043: C2: assert(_base >= VectorMask && _base <= VectorZ) failed: Not a Vector

Mon Jan 26 03:13:36 UTC 2026

Hi all,

This pull request contains a backport of commit [38b66b12](https://github.com/openjdk/jdk/commit/38b66b12581a3745a37589e32aa0fc880d27b4d4) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Xiaohong Gong on 26 Jan 2026 and was reviewed by Quan Anh Mai and Vladimir Ivanov.

Thanks!

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Commit messages:
 - Backport 38b66b12581a3745a37589e32aa0fc880d27b4d4

Changes: https://git.openjdk.org/jdk/pull/29404/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29404&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374043
  Stats: 14 lines in 2 files changed: 13 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29404.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29404/head:pull/29404

PR: https://git.openjdk.org/jdk/pull/29404