RFR: First refactoring (thaw_fast) [v5]

[Frederic Parain]

> Refactoring method thaw_fast() for better encapsulation and readability.

Frederic Parain has updated the pull request incrementally with one additional commit since the last revision:

  Re-order methods

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Changes:
  - all: https://git.openjdk.java.net/loom/pull/158/files
  - new: https://git.openjdk.java.net/loom/pull/158/files/5470e42e..49865069

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=loom&pr=158&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=loom&pr=158&range=03-04

  Stats: 102 lines in 1 file changed: 51 ins; 51 del; 0 mod
  Patch: https://git.openjdk.java.net/loom/pull/158.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/158/head:pull/158

PR: https://git.openjdk.java.net/loom/pull/158