RFA 8204966: [TESTBUG] hotspot/test/compiler/whitebox/IsMethodCompilableTest.java test fails with -XX:CompileThreshold=1

[David Buck]

Hi!

Please approve this trivial backport to 8u-dev:

bug report:
https://bugs.openjdk.java.net/browse/JDK-8204966

jdk11 changeset:
http://hg.openjdk.java.net/jdk/jdk11/rev/9fb336cee537

jdk11 code review thread:
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2018-August/029992.html

The change applies as-is after file path unshuffling.

Cheers,
-Buck