[jdk11u-dev] RFR: 8283409: JDK11 fails to build when C1 is disabled

[Jie Fu]

Hi all,

This patch fixes build failure of JDK11 when C1 compiler is disabled with `--with-jvm-features=-compiler1`.
Please review it.

Thanks.
Best regards,
Jie

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

Commit messages:
 - 8283409: JDK11 fails to build when C1 is disabled

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/921/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=921&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8283409
  Stats: 4 lines in 2 files changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/921.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/921/head:pull/921

PR: https://git.openjdk.java.net/jdk11u-dev/pull/921