[lworld] RFR: 8327374: [lworld] Fix C1 build in aarch64

[Frederic Parain]

Small fixes on aarch64 to fix build after JDK-8327150 changes.

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Commit messages:
 - Fix C1 build on aarch64

Changes: https://git.openjdk.org/valhalla/pull/1032/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1032&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327374
  Stats: 9 lines in 2 files changed: 0 ins; 8 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/1032.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1032/head:pull/1032

PR: https://git.openjdk.org/valhalla/pull/1032