RFR: 8267932: [lworld] JIT support for the L/Q model (step 2)

[Tobias Hartmann]

Remaining changes (mostly intrinsics) and some small bug fixes after [JDK-8267846](https://bugs.openjdk.java.net/browse/JDK-8267846). I also strengthened some tests.

This should fix all JIT related failures in tier1 - 3 except for [JDK-8270098](https://bugs.openjdk.java.net/browse/JDK-8270098) which is a bug in mainline.

Best regards,
Tobias

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Commit messages:
 - More fixes
 - 8267932: [lworld] JIT support for the L/Q model (step 2)

Changes: https://git.openjdk.java.net/valhalla/pull/474/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=474&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267932
  Stats: 204 lines in 26 files changed: 87 ins; 50 del; 67 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/474.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/474/head:pull/474

PR: https://git.openjdk.java.net/valhalla/pull/474