RFR: 8255068: [JVMCI] errors during compiler creation can be hidden [v2]

[Tom Rodriguez]

> This improves the handling of errors during compiler creation.  @dougxc @vnkozlov

Tom Rodriguez has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  8255068: [JVMCI] errors during compiler creation can be hidden

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/768/files
  - new: https://git.openjdk.java.net/jdk/pull/768/files/a5a6278e..2ab7aa9a

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=768&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=768&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/768.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/768/head:pull/768

PR: https://git.openjdk.java.net/jdk/pull/768