RFR: 8266789: devirtualize find_node and remove of LinkedList

[Xin Liu]

On Mon, 10 May 2021 07:49:49 GMT, Xin Liu <xliu at openjdk.org> wrote:

> Devirtualize find, find_node and remove. This patch make both LinkedListImpl
> and SortedLinkedList more generic. If the client doesn't use those member functions,
> it's not necessary to define equals() for the user-defined class E.
> 
> Remove those 3 member functions from the pure interface LinkedList. subclasses
> implement them using regular member functions.

hi, @iklam 
Could you take a look at this. 

thanks, 
--lx

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PR: https://git.openjdk.java.net/jdk/pull/3944