RFR: 8260408: Shenandoah: adjust inline hints after JDK-8255019

[Roman Kennke]

On Tue, 26 Jan 2021 11:41:52 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> I was following up on performance testing results for some ongoing work, and realized that there are `ShenandoahMarkContext::mark_strong` calls from `mark_work_loop`. Those callees were supposed to be inlined. I believe it is a simple omission after JDK-8255019 moved `mark_work_loop` code to `shenandoahMark.cpp`.
> 
> On a typical workload:
> 
> # Before
> [44.500s][info][gc,stats] Concurrent Marking  =    0.395 s (a =    11278 us) 
>    (n =    35) (lvls, us =     6426,     9473,    11133,    12891,    16476)
> 
> # After
> [44.405s][info][gc,stats] Concurrent Marking  =    0.337 s (a =     9636 us) 
>    (n =    35) (lvls, us =     3770,     7383,     9785,    11328,    16776)
> 
> Additional testing:
>  - [x] Eyeballing GC hot paths
>  - [x] Ad-hoc performance tests

Looks good! Thanks!

-------------

Marked as reviewed by rkennke (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2235