[jdk21u-dev] RFR: 8340214: C2 compilation asserts with "no node with a side effect" in PhaseIdealLoop::try_sink_out_of_loop

[Goetz Lindenmaier]

I backport this for parity with 21.0.6-oracle.

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Commit messages:
 - Backport ff2f39f24018436556a8956ec55da433dc697437

Changes: https://git.openjdk.org/jdk21u-dev/pull/1117/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1117&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340214
  Stats: 124 lines in 4 files changed: 112 ins; 1 del; 11 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1117.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1117/head:pull/1117

PR: https://git.openjdk.org/jdk21u-dev/pull/1117