[jdk21u] RFR: 8317507: C2 compilation fails with "Exceeded _node_regs array"

[Aleksey Shipilev]

Clean backport to fix the C2 crash.

Additional testing:
 - [x] New regression test passes on MacOS AArch64 fastdebug _even without the fix_
 - [ ] Linux x86_64 fastdebug `tier1 tier2 tier3`

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Commit messages:
 - Backport a5818972c16bd883d768ff2fb23a8aa9e0142c65

Changes: https://git.openjdk.org/jdk21u/pull/317/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=317&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317507
  Stats: 602 lines in 2 files changed: 602 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u/pull/317.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/317/head:pull/317

PR: https://git.openjdk.org/jdk21u/pull/317