RFR: 8255914: [AOT] Using AOT flag should give warning when AOT is not included in build

[David Holmes]

On Thu, 5 Nov 2020 04:21:01 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> Currently if AOT feature is not included in a build AOT flags specified on command line are silently ignored: 
> $ java -XX:+UnlockExperimentalVMOptions -XX:+UseAOT -version 
> java version "16-internal" 2021-03-16
> 
> It should give warning:
> 
> $ java -XX:+UnlockExperimentalVMOptions -XX:+UseAOT -version
> Java HotSpot(TM) 64-Bit Server VM warning: -XX:+UseAOT not supported in this VM
> java version "16-internal" 2021-03-16

Hi Vladimir,
This all looks fine, but can you simply replace UNSUPPORTED_OPTION_NULL with UNSUPPORTED_OPTION_INIT and update the two existing usages, so that we don't have three versions of the macro?

Thanks,
David

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Changes requested by dholmes (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1071