RFR: 8364372: [Leyden] Set UseAOTCodeLoadThread ergonomically [v2]

[Ashutosh Mehra]

> Without this fix:
> 
> [assembly phase]
> $ java -Xlog:jit+thread=debug -XX:AOTMode=create -XX:AOTCache=jbench.aot -XX:AOTConfiguration=jbench.aotconf -cp JavacBench.jar JavacBench 100
> ...
> [0.317s][debug][jit,thread] Added initial compiler thread C1 AOT code caching CompilerThread
> [0.317s][debug][jit,thread] Added initial compiler thread C2 AOT code caching CompilerThread
> ..
> 
> With this fix, these threads are only in the production phase, not in the assembly phase.

Ashutosh Mehra has updated the pull request incrementally with one additional commit since the last revision:

  Review comments
  
  Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>

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

Changes:
  - all: https://git.openjdk.org/leyden/pull/89/files
  - new: https://git.openjdk.org/leyden/pull/89/files/42e044f2..894a675b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=leyden&pr=89&range=01
 - incr: https://webrevs.openjdk.org/?repo=leyden&pr=89&range=00-01

  Stats: 4 lines in 2 files changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/leyden/pull/89.diff
  Fetch: git fetch https://git.openjdk.org/leyden.git pull/89/head:pull/89

PR: https://git.openjdk.org/leyden/pull/89