[9] RFR (S): 8029305: add type tag to AbstractCompiler

[Vladimir Kozlov]

Looks good.

Thanks,
Vlaidmir

On 1/6/14 2:13 PM, Christian Thalinger wrote:
> https://bugs.openjdk.java.net/browse/JDK-8029305
> http://cr.openjdk.java.net/~twisti/8029305
>
> 8029305: add type tag to AbstractCompiler
> Reviewed-by:
>
> Add a closed set of concrete compiler classes. Using an tag like this
> avoids a confusing use of macros around the definition of the
> is_<compiler type> methods.
>
> As a followup to this change I’m going to replace nmethod::_compiler
> with a flags field that stores AbstractCompiler::Type values instead:
>
> [#JDK-8031211] replace nmethod::_compiler with a flags field that stores
> AbstractCompiler::Type values instead
> <https://bugs.openjdk.java.net/browse/JDK-8031211>
>