Integrated: 8310840: [lw5] add several regression tests

[Vicente Romero]

adding several regression tests

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Commit messages:
 - white space issue
 - white spaces
 - 8310840: [lw5] add several regression tests

Changes: https://git.openjdk.org/valhalla/pull/878/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=878&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310840
  Stats: 751 lines in 32 files changed: 627 ins; 74 del; 50 mod
  Patch: https://git.openjdk.org/valhalla/pull/878.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/878/head:pull/878

PR: https://git.openjdk.org/valhalla/pull/878