> Hi all, > > This PR refactors the mark word to use the order of bits as specified in [JEP > 450](https://openjdk.org/jeps/450). > > Specifically, there are three portions to this change: > - Moving the age bits lower to their intended position. > - Fixing a miscompilation in the native `hashCode` intrinsic that got > unearthed as a result. > - Updating the documentation to be more inline with the mainline docs and > minimal Valhalla additions. > > Feedback is welcome, especially for the doc changes. If there are any ideas > of other places in which similar miscompilations could occur, that would be > valuable to know as well.
Paul Hübner has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains nine additional commits since the last revision: - Remove unused prototype method. - Merge branch 'lworld' into JDK-8367073 - Revise documentation. - Fix hashCode intrinsic miscompilation. - Fix outdated markWord test semantics. - Chuck out weird markWord code. - Emulate old Valhalla decode_pointer behavior. - Fix typo. - Follow JEP450 MarkWord specification. ------------- Changes: - all: https://git.openjdk.org/valhalla/pull/1578/files - new: https://git.openjdk.org/valhalla/pull/1578/files/8fe33b79..5b0b70ee Webrevs: - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1578&range=01 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1578&range=00-01 Stats: 10750 lines in 383 files changed: 5195 ins; 4264 del; 1291 mod Patch: https://git.openjdk.org/valhalla/pull/1578.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1578/head:pull/1578 PR: https://git.openjdk.org/valhalla/pull/1578
