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 To the less mathematically-oriented members of the hotspot compiler group: mathematically, this looks good to me. ------------- PR Comment: https://git.openjdk.org/jdk/pull/31033#issuecomment-4389115813
