[jdk17u-dev] RFR: 8277654: Shenandoah: Don't produce new memory state in C2 LRB runtime call

[William Kemper]

Testing:

- [ ] hotspot_gc_shenandoah
- [ ] dacapo
- [ ] extremem
- [ ] specjbb2015
- [ ] hyperalloc

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Commit messages:
 - Backport 3d39f09c6cdc875b44147b4e84e496b6abf93996

Changes: https://git.openjdk.org/jdk17u-dev/pull/1448/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1448&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8277654
  Stats: 132 lines in 2 files changed: 0 ins; 127 del; 5 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1448.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1448/head:pull/1448

PR: https://git.openjdk.org/jdk17u-dev/pull/1448