RFR: 8076988: reevaluate trivial method policy

[dean.long at oracle.com]

Eric, you should be able to revert 8145579 at the same time.

dl

On 1/7/19 2:47 PM, Eric Caspole wrote:
> Hi everyone,
> Could I get reviews or comments for a fix/simplification of the 
> trivial method policy. I have an internal benchmark where a very hot 
> "trivial" method gets compiled at level 1 and it leads to a ~9% 
> regression compared to getting compiled with C2 level 4. Others have 
> expressed thoughts that this policy might now not as useful as 
> originally intended. I have run performance testing of throughput and 
> startup time with no noticeable regressions.
>
> This webrev passed regular tier1 and tier 2 testing.
> Thanks,
> Eric
>
>
> JBS:
> https://bugs.openjdk.java.net/browse/JDK-8076988
>
> Webrev:
> http://cr.openjdk.java.net/~ecaspole/JDK-8076988/01/webrev/