Configure: Does enabling graal automatically disable cmsgc?

[Lindenmaier, Goetz]

Hi,

I'm just fixing jtreg/runtime/appcds/sharedStrings/IncompatibleOptions.java

It is not checking correctly whether ZGC is enabled. 

I found this code in the test:
if (!Compiler.isGraalEnabled()) { // Graal does not support CMS
      testExec(8, "-XX:+UseConcMarkSweepGC", "", "", false);
}

I think this should test for GC.CMS.isSupported(). I would like to 
fix this, too.
But this would require that configuring with graal disables cmsgc.
(Which seems to be what is desired given the comment above.)
Is this the case?

Best regards,
  Goetz.