On Thu, 18 Dec 2025 13:42:19 GMT, Tobias Hartmann <[email protected]> wrote:
>> C2 will now remove the slow call to >> `ValueObjectMethods::isSubstitutable(Alt)` whenever it's able to determine >> the layout of one of the operands. It will then emit code to directly >> compare the fields. >> >> This patch also contains an intrinsic for `_getFieldMap` that will be used >> by the new core-libs implementation of the substitutability check >> ([JDK-8370450](https://bugs.openjdk.org/browse/JDK-8370450)) that's used by >> the interpreter / C1 and as a slow path in C2. >> >> When browsing code, I marked a few rough edges in unrelated code for >> follow-up cleanups with the corresponding bug numbers. >> >> Testing: tier1-tier6 + valhalla-comp-stress >> >> Thanks, >> Tobias > > Tobias Hartmann has updated the pull request incrementally with one > additional commit since the last revision: > > Adjustments according to review comments Thanks for the update, it looks good to me! ------------- Marked as reviewed by chagedorn (Committer). PR Review: https://git.openjdk.org/valhalla/pull/1823#pullrequestreview-3593084997
