RFR: 8351635: C2 ROR/ROL: assert failed: Long constant expected

[Jatin Bhateja]

This bug fix patch relaxes the strict assertion check to allow other pattern matches for degenerated long vector ROL/ROR operations with non-constant scalar shift values.  

Kindly review and share feedback.

Best Regards,
Jatin

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Commit messages:
 - 8351635: C2 ROR/ROL: assert failed: Long constant expected

Changes: https://git.openjdk.org/jdk/pull/25493/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25493&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351635
  Stats: 131 lines in 2 files changed: 129 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25493.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25493/head:pull/25493

PR: https://git.openjdk.org/jdk/pull/25493