> 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 with a new target base due to a merge or a rebase. The pull request now contains 100 commits: - Fix comments, remove dead code - Merge branch 'master' into unsignedDiv - Various fixes - Fix IntegerDivValueTests - Fix merge conflicts - Merge branch 'master' into unsignedDiv - Merge branch 'master' into unsignedDiv - fix tests - Merge branch 'master' into unsignedDiv - further clarify variable meanings - ... and 90 more: https://git.openjdk.org/jdk/compare/45e66b6a...e991bb28 ------------- Changes: https://git.openjdk.org/jdk/pull/31033/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31033&range=02 Stats: 2245 lines in 15 files changed: 1591 ins; 368 del; 286 mod Patch: https://git.openjdk.org/jdk/pull/31033.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31033/head:pull/31033 PR: https://git.openjdk.org/jdk/pull/31033
