RFR: 8325495: C2: implement optimization for series of Add of unique value [v8]

[Roland Westrelin]

On Mon, 7 Oct 2024 06:36:06 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> Kangcheng Xu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   update comments, use explicit opcode comparisons for LShift nodes
>
> Testing all passed.

@TobiHartmann @chhagedorn thanks for running tests

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

PR Comment: https://git.openjdk.org/jdk/pull/20754#issuecomment-2396180050