RFR: 8371121: compiler/whitebox/DeoptimizeRelocatedNMethod.java fails with C1 [v2]

[Chad Rakoczy]

> [JDK-8371121](https://bugs.openjdk.org/browse/JDK-8371121)
> 
> This update aims to improve the test’s stability. A previous failure occurred because the method wasn’t compiled at the time of the check. I believe this could have occurred due to a deoptimization but I have not been able to reproduce. Previously, the test ensured compilation by repeatedly invoking the function. Instead, we now use Whitebox to add the method directly to the compile queue and wait for it to finish compiling. This approach should eliminate issues caused by deoptimization from function calls.

Chad Rakoczy has updated the pull request incrementally with two additional commits since the last revision:

 - Fix comment
 - Block on comp instead

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/28246/files
  - new: https://git.openjdk.org/jdk/pull/28246/files/8d761d15..0cba5fc7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28246&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28246&range=00-01

  Stats: 5 lines in 1 file changed: 0 ins; 3 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/28246.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28246/head:pull/28246

PR: https://git.openjdk.org/jdk/pull/28246