RFR: 8343774: compiler/c2/TestCastX2NotProcessedIGVN.java fails on ppc64(le) & s390x platforms [v3]

[Richard Reingruber]

> Vectorization of the loop in `test2` does not work on ppc therefore I want to exclude it there.

Richard Reingruber has updated the pull request incrementally with one additional commit since the last revision:

  Remove riscv64

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21975/files
  - new: https://git.openjdk.org/jdk/pull/21975/files/a7c2872b..82ac4751

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21975&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21975&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21975.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21975/head:pull/21975

PR: https://git.openjdk.org/jdk/pull/21975