RFR: 8273880: Zero: Print warnings when unsupported intrinsics are enabled

[Aleksey Shipilev]

At least one test is currently failing:


$ CONF=linux-x86_64-zero-fastdebug make exploded-test TEST=compiler/cpuflags/TestAESIntrinsicsOnUnsupportedConfig.java
...
# java.lang.AssertionError: Expected message not found: 'warning: AES instructions are not available on this CPU'.


Zero should print warnings when unsupported (all) intrinsics are enabled.

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

Commit messages:
 - Fix

Changes: https://git.openjdk.java.net/jdk/pull/5545/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5545&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273880
  Stats: 65 lines in 1 file changed: 65 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5545.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5545/head:pull/5545

PR: https://git.openjdk.java.net/jdk/pull/5545