RFR: 8316594: C2 SuperWord: wrong result with hand unrolled loops

Tue Oct 3 01:05:45 UTC 2023

On Thu, 21 Sep 2023 15:26:25 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Please read description in https://github.com/openjdk/jdk/pull/15864.
> 
> Currently, we only compare the first element of the load-pack with the StoreVector. This is not correct, we need to compare all elements of the load-pack with the StoreVector. Otherwise it may be that the first element lays below/before the memory region of the StoreVector (Less), but the last element of the load-pack for example could have overlap with the StoreVector (Equal).
> 
> Tier1-6 + stress-testing (Running)
> Performance testing (Running)

Good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/15866#pullrequestreview-1653951875