RFR: 8163589: Add back intrinsic methods for event based tracing

[Markus Gronlund]

Hi Robbin, 

Thanks for noticing and catching this - looks good.

Markus

-----Original Message-----
From: Robbin Ehn 
Sent: den 15 augusti 2016 07:37
To: hotspot-compiler-dev at openjdk.java.net
Subject: Re: RFR: 8163589: Add back intrinsic methods for event based tracing

Hi again, please review!

Fortunately I saw that I had missed a logical change (from 8 to 9) how class id is retrieved, sorry about that.
Instead of masking away the two low bits, we use an arbitrary mask and an arbitrary right shift.

Here is the incremental::
http://cr.openjdk.java.net/~rehn/8163589/hotspot.02-03/
with full here:
http://cr.openjdk.java.net/~rehn/8163589/hotspot.03/

Tested with JMH and relevant RBT test group.

Thanks!

/Robbin

On 08/10/2016 04:05 PM, Robbin Ehn wrote:
> Hi all,
>
> In 8 we had this intrinsic, I'm adding it back Used for event based 
> tracing.
>
> Webrev: http://cr.openjdk.java.net/~rehn/8163589/hotspot.01/webrev/
> Bug: https://bugs.openjdk.java.net/browse/JDK-8163589
>
> Thanks!
>
> /Robbin