RFR: 8213035: Pack MethodHandleInlineStrategy coder and length into a long

Claes Redestad claes.redestad at oracle.com
Mon Oct 29 19:36:53 UTC 2018

Vladimir, Mandy,

thanks for reviewing!


On 2018-10-29 20:16, Mandy Chung wrote:
> On 10/29/18 8:17 AM, Claes Redestad wrote:
>> Hi,
>> by packing the coder and length values into a long, and combining the 
>> length and coder mixers, we can reduce the number of MHs generated to 
>> set up String concatenations.
>> Theoretically we reduce the number of MHs created by up to a third, 
>> and real time improvements in startup tests exercising ISC typically 
>> hover around 10%. This optimization reverts JDK-8212597[1], so 
>> expressions that benefited from that of course sees a smaller or no 
>> added benefit.
>> http://cr.openjdk.java.net/~redestad/8213035/jdk.00/
>> https://bugs.openjdk.java.net/browse/JDK-8213035
> This looks okay to me.
> Mandy

More information about the core-libs-dev mailing list