[lworld] RFR: 8367245: [lworld] C2 compilation fails with "Missed optimization opportunity in PhaseIterGVN" [v2]

[Marc Chevalier]

> Let's just disable the verification for now. The issue will be fixed in mainline, then reach Valhalla.
> 
> I've changed the 3 files in which I've observed some clashing speculative types at least once.
> 
> This will be reverted by https://bugs.openjdk.org/browse/JDK-8371726 once https://bugs.openjdk.org/browse/JDK-8371716 is solved.
> 
> Thanks,
> Marc

Marc Chevalier has updated the pull request incrementally with one additional commit since the last revision:

  addFlags

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/1732/files
  - new: https://git.openjdk.org/valhalla/pull/1732/files/06584e48..8442e1c6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1732&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1732&range=00-01

  Stats: 33 lines in 4 files changed: 4 ins; 0 del; 29 mod
  Patch: https://git.openjdk.org/valhalla/pull/1732.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1732/head:pull/1732

PR: https://git.openjdk.org/valhalla/pull/1732