On Tue, 5 May 2026 16:51:59 GMT, Quan Anh Mai <[email protected]> wrote:

>> Hi,
>> 
>> I was reminded of this forgotten PR when reviewing a counted loop 
>> transformation PR. The important point is that it is easier and more 
>> efficient to compute the trip count of a counted loop using unsigned 
>> division. Currently, for int counted loops, trip count is computed by 
>> extending the loop parameters to long and doing a signed long division. This 
>> cannot be applied to long counted loop. As a result, as a precondition for 
>> long counted loop predication, we need to be able to efficiently transform 
>> an unsigned division by constant.
>> 
>> For more information, please refer to #9947 .
>> 
>> Testing:
>> 
>> - [x] tier1-4,hs-comp-stress
>> 
>> Please take a look and leave your review, thanks a lot.
>> 
>> ---------
>> - [x] I confirm that I make this contribution in accordance with the 
>> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
>
> Quan Anh Mai has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Various fixes

Good. You need second review from our group.

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

Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/31033#pullrequestreview-4230306164

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