[jdk26] RFR: 8373383: C2: Missing Ideal optimizations for load and store vectors on SVE

Wed Dec 10 03:56:52 UTC 2025

Hi all,

This pull request contains a backport of commit [b6732d60](https://github.com/openjdk/jdk/commit/b6732d6048259de68a3dd5b4f66ac82f87270404) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Xiaohong Gong on 10 Dec 2025 and was reviewed by Emanuel Peter, Eric Fang and Hao Sun.

Thanks!

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Commit messages:
 - Backport b6732d6048259de68a3dd5b4f66ac82f87270404

Changes: https://git.openjdk.org/jdk/pull/28732/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28732&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373383
  Stats: 638 lines in 8 files changed: 582 ins; 19 del; 37 mod
  Patch: https://git.openjdk.org/jdk/pull/28732.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28732/head:pull/28732

PR: https://git.openjdk.org/jdk/pull/28732