[jdk26] RFR: 8360271: String.indexOf intrinsics fail with +EnableX86ECoreOpts and -CompactStrings

Fri Jan 16 07:14:07 UTC 2026

Hi all,

This pull request contains a backport of commit [1d889b92](https://github.com/openjdk/jdk/commit/1d889b92bde5dfcb1fbe6cddb389a77f92eb1ce7) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Volodymyr Paprotski on 15 Jan 2026 and was reviewed by Tobias Hartmann, Jatin Bhateja and Sandhya Viswanathan.

Thanks!

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Commit messages:
 - Backport 1d889b92bde5dfcb1fbe6cddb389a77f92eb1ce7

Changes: https://git.openjdk.org/jdk/pull/29263/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29263&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8360271
  Stats: 19 lines in 2 files changed: 11 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/29263.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29263/head:pull/29263

PR: https://git.openjdk.org/jdk/pull/29263