[lworld] RFR: 8277570: [lworld] Pre-allocated instance should be created during class initialization [v2]

[Frederic Parain]

> Please review those changes moving the creation of the pre-allocated default instance from the loading phase to the class initialization phase. The changes also include fixes in C1 to ensure the class is initialized before optimizing empty classes.
> 
> Thank you,
> 
> Fred

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

  Fix default value allocation in CDS, more asserts

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Changes:
  - all: https://git.openjdk.java.net/valhalla/pull/585/files
  - new: https://git.openjdk.java.net/valhalla/pull/585/files/97dacab2..ceca1e67

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=valhalla&pr=585&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=valhalla&pr=585&range=00-01

  Stats: 9 lines in 3 files changed: 3 ins; 6 del; 0 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/585.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/585/head:pull/585

PR: https://git.openjdk.java.net/valhalla/pull/585