[jdk21u] RFR: 8316679: C2 SuperWord: wrong result, load should not be moved before store if not comparable
Tobias Hartmann
thartmann at openjdk.org
Thu Nov 9 06:12:04 UTC 2023
On Mon, 6 Nov 2023 15:40:00 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:
> Unclean backport to fix the vectorization bug. The patch is unclean because JDK 21u does not have [JDK-8312332](https://bugs.openjdk.org/browse/JDK-8312332) refactoring, that I do not want to backport. I have reapplied the patch by renaming `SWPointer` again.
>
> Note @eme64, @TobiHartmann.
>
> Additional testing:
> - [x] MacOS AArch64 Server fastdebug, new regression test fails without the patch, passes with it
> - [x] MacOS AArch64 Server fastdebug, `compiler/loopopts`
> - [x] Linux x86_64 server fastdebug, `tier1 tier2 tier3 tier4`
Looks good.
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Marked as reviewed by thartmann (Reviewer).
PR Review: https://git.openjdk.org/jdk21u/pull/327#pullrequestreview-1721774360
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