> 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 with a new target base due to a merge or a rebase. The pull request now contains 43 commits: - Merge branch 'master' into check-index-sub-range - Merge branch 'master' into check-index-sub-range - fix TestRangeCheck - enable intrinsic control for release builds - fix TestOpaqueConstantBoolNodes - adjust benchmark iterations - Merge remote-tracking branch 'upstream/master' into check-index-sub-range-bench - update benchmarks - update tests with deopt on length=max - improve checkFromToIndex RCE hoisting - ... and 33 more: https://git.openjdk.org/jdk/compare/7bc01544...30d2f0c7 ------------- Changes: https://git.openjdk.org/jdk/pull/31138/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31138&range=01 Stats: 1152 lines in 12 files changed: 1110 ins; 8 del; 34 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
