RFR: update microbenchmarks

[Sergey Kuksenko]

Update microbenchmarks.

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Commit messages:
 - update microbenchmarks

Changes: https://git.openjdk.java.net/loom/pull/35/files
 Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=35&range=00
  Stats: 851 lines in 10 files changed: 845 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/loom/pull/35.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/35/head:pull/35

PR: https://git.openjdk.java.net/loom/pull/35