[jdk17u-dev] RFR: 8275847: Scheduling fails with "too many D-U pinch points" on small method

[Goetz Lindenmaier]

I backport this for parity with 17.0.3-oracle.

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

Commit messages:
 - Backport 3934fe54b4c3e51add6d3fe1f145e5aebfe3b2fc

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/134/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=134&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8275847
  Stats: 89 lines in 4 files changed: 74 ins; 10 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/134.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/134/head:pull/134

PR: https://git.openjdk.java.net/jdk17u-dev/pull/134