[jdk11u-dev] RFR: 8324754: WB_IsIntrinsicAvailable failed with "compiler not available" with option -Xint

[lusou-zhangquan]

If interpreter mode is enabled, the highest compile level should be none. Therefore, WB_IsIntrinsicAvailable will return false directly rather than check intrinsic availability with non-existent compiler.

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Commit messages:
 - 8324754: WB_IsIntrinsicAvailable failed with "compiler not available" with option -Xint

Changes: https://git.openjdk.org/jdk11u-dev/pull/2497/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2497&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324754
  Stats: 54 lines in 9 files changed: 52 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2497.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2497/head:pull/2497

PR: https://git.openjdk.org/jdk11u-dev/pull/2497