RFR: Freeze functions [v8]

[Robbin Ehn]

> Freeze functions

Robbin Ehn has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Fixed assert
 - Merge branch 'fibers' into fast-funcs
 - Freeze funcs

-------------

Changes:
  - all: https://git.openjdk.java.net/loom/pull/156/files
  - new: https://git.openjdk.java.net/loom/pull/156/files/eae306c6..d75f034f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=loom&pr=156&range=07
 - incr: https://webrevs.openjdk.java.net/?repo=loom&pr=156&range=06-07

  Stats: 13 lines in 2 files changed: 6 ins; 6 del; 1 mod
  Patch: https://git.openjdk.java.net/loom/pull/156.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/156/head:pull/156

PR: https://git.openjdk.java.net/loom/pull/156