RFR: 8366815: C2: Delay Mod/Div by constant transformation

[Vladimir Ivanov]

On Mon, 27 Oct 2025 18:04:50 GMT, Hannes Greule <hgreule at openjdk.org> wrote:

> how does that interact with other IGVN optimizations, especially those that want to pattern match specific nodes?

Indeed, IR pattern matching can be affected as we already see with `ConstraintCastPP` nodes, so affected use sites have to be migrated to `Node::uncast()`/`Node::eqv_uncast()` helper methods.

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PR Comment: https://git.openjdk.org/jdk/pull/27886#issuecomment-3452649490