RFR: Get easy on template instantiations in ShConcMark

[Zhengyu Gu]

Good to me.

-Zhengyu

On 02/13/2018 10:59 AM, Aleksey Shipilev wrote:
> http://cr.openjdk.java.net/~shade/shenandoah/concmark-less-templates/webrev.01/
> 
> Turns out, we don't need all these recursive template instantiation for all arguments. We are fine
> with only those arguments that would end up in mark_loop_work. This improves build times, and .o/.so
> file sizes a bit. This does not degrade performance, because the important part is mark_loop_work,
> and we specialize it enough.
> 
> Testing: hotspot_gc_shenandoah, eyeballing inline trees
> 
> Thanks,
> -Aleksey
>