RFR: 8316422: TestIntegerUnsignedDivMod.java triggers "invalid layout" assert in FrameValues::validate

[Dean Long]

Don't truncate caller exception state stack in c1, even if no handlers are found.  This makes c1 follow the example of c2.  See bug for details.

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Commit messages:
 - retain caller stack slots in exception state, but mark as invalid

Changes: https://git.openjdk.org/jdk/pull/16297/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16297&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316422
  Stats: 108 lines in 5 files changed: 65 ins; 18 del; 25 mod
  Patch: https://git.openjdk.org/jdk/pull/16297.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16297/head:pull/16297

PR: https://git.openjdk.org/jdk/pull/16297