[jdk21u-dev] RFR: 8325494: C2: Broken graph after not skipping CastII node anymore for Assertion Predicates after JDK-8309902 [v2]

[Martin Doerr]

> Originally clean backport of [JDK-8325494](https://bugs.openjdk.org/browse/JDK-8325494). A part of the assertion can only be enabled after [JDK-8305636](https://bugs.openjdk.org/browse/JDK-8305636) is backported (see 2nd commit).

Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:

  Disable part of an assertion which requires JDK-8305636.

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

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/734/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/734/files/bf4d8644..4c82cbfc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=734&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=734&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/734.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/734/head:pull/734

PR: https://git.openjdk.org/jdk21u-dev/pull/734