[lworld] RFR: 8269095: Fix Valhalla Zero build failures

[Aleksey Shipilev]

This should make Zero buildable again in Valhalla workspace. Zero would not work with primitive classes just yet, failing with "unimplemented bytecode" when reaching the Valhalla code, but at least it would not fail the builds.

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Commit messages:
 - 8269095: Fix Valhalla Zero build failures

Changes: https://git.openjdk.java.net/valhalla/pull/458/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=458&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8269095
  Stats: 30 lines in 3 files changed: 20 ins; 0 del; 10 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/458.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/458/head:pull/458

PR: https://git.openjdk.java.net/valhalla/pull/458