Integrated: some bug fixing, adding new regression tests

[Vicente Romero]

Bug fixing and more regression tests

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Commit messages:
 - some regression tests are not passing

Changes: https://git.openjdk.java.net/valhalla/pull/613/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=613&range=00
  Stats: 93 lines in 2 files changed: 50 ins; 5 del; 38 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/613.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/613/head:pull/613

PR: https://git.openjdk.java.net/valhalla/pull/613