[jdk25u-dev] RFR: 8372046: compiler/floatingpoint/TestSubNodeFloatDoubleNegation.java fails IR verification

[Fei Yang]

Hi all,

This pull request contains a backport of commit [a3b1affb](https://github.com/openjdk/jdk/commit/a3b1affbfb23eeef32749164aae316e5d55fffaa) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Fei Yang on 20 Nov 2025 and was reviewed by Manuel Hässig and Emanuel Peter.

Thanks!

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Commit messages:
 - Backport a3b1affbfb23eeef32749164aae316e5d55fffaa

Changes: https://git.openjdk.org/jdk25u-dev/pull/22/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=22&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8372046
  Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/22.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/22/head:pull/22

PR: https://git.openjdk.org/jdk25u-dev/pull/22