[jdk17u-dev] RFR: 8277906: Incorrect type for IV phi of long counted loops after CCP

[Martin Doerr]

Clean backport of JDK-8277906.

-------------

Commit messages:
 - Backport 3889af3f7debc4f8d75f620bb54134d1d11a6c83

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/187/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=187&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277906
  Stats: 66 lines in 2 files changed: 61 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/187.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/187/head:pull/187

PR: https://git.openjdk.java.net/jdk17u-dev/pull/187