[jdk17u-dev] RFR: 8290850: C2: create_new_if_for_predicate() does not clone pinned phi input nodes resulting in a broken graph [v2]

[Goetz Lindenmaier]

> I backport this for parity with 17.0.7-oracle.
> 
> I had to resolve loopnode.hpp due to context.

Goetz Lindenmaier has updated the pull request incrementally with one additional commit since the last revision:

  Add forgotten test

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1056/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1056/files/3f0a2b2f..9fd56598

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1056&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1056&range=00-01

  Stats: 408 lines in 1 file changed: 408 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1056.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1056/head:pull/1056

PR: https://git.openjdk.org/jdk17u-dev/pull/1056