RFR: 8367341: C2: apply KnownBits and unsigned bounds to And / Or operations [v2]

[Quan Anh Mai]

On Wed, 15 Oct 2025 12:55:15 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Yes, testing the monotonicity for those is really slow since we traverse the set of all instances multiple times.
>
> Do you know how slow exactly? Just a few seconds or more than that?

The runtime jumps from 400ms to 10s, so it's quite a big jump indeed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27618#discussion_r2433092847