On Tue, 12 May 2026 14:38:09 GMT, Kangcheng Xu <[email protected]> wrote:
> Hi, > > This PR adds intrinsics to `Preconditions.checkFromToIndex()` and > `Preconditions.checkFromIndexSize()` to produced optimized IR that uses > `RangeCheck` node instead of implicit comparisons. > `Preconditions.checkIndex()` is also refactored (without additional > optimizations) to use the same helper function. > > Some common patterns where calling `checkFromToIndex` or `checkFromIndexSize` > in a loop can have range checks in main loop eliminated completely and, > therefore, enables empty loop removal. > > IR and correctness tests are included and passing. Additional tests on > `Preconditions.checkIndex()` were also added. > > Thanks! > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). Current GHA failures in `gc/TestGCALotAtAllSafepoints` are from upstream and have been reported: https://bugs.openjdk.org/browse/JDK-8390661 ------------- PR Comment: https://git.openjdk.org/jdk/pull/31138#issuecomment-5344364235
