> 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).
Kangcheng Xu has updated the pull request incrementally with one additional commit since the last revision: fix type widening, add comments ------------- Changes: - all: https://git.openjdk.org/jdk/pull/31138/files - new: https://git.openjdk.org/jdk/pull/31138/files/d34570ab..19d2c10d Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=31138&range=04 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=31138&range=03-04 Stats: 6 lines in 1 file changed: 0 ins; 4 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/31138.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31138/head:pull/31138 PR: https://git.openjdk.org/jdk/pull/31138
