RFR(S) : 8213812 : remove -XX:CompileTheWorld* flags

[Roland Westrelin]

Hi Igor,

> as you saw, I have fixed a couple things in the java library to make
> it easier to build and use. please let me know if there is something
> else which you think should/can be improved. and ping me when you are
> satisfied w/ the java test library and don't need native CTW anymore.

I'm giving it a try with:

JAVA_OPTIONS=" -XX:-TieredCompilation -XX:CICompilerCount=16 -XX:+ShowMessageBoxOnError" JAVA_HOME=~/hs/build/linux-x86_64-server-fastdebug/jdk/ time ./ctw.sh modules:java.base

I see it creates a 16 thread pool. Still my system seems to be lightly
loaded. Does it proceed with parallel compilations in that case?

BTW, command above causes the JVM to crash after a while.

Roland.