RFR: 8275326: C2: assert(no_dead_loop) failed: dead loop detected [v2]

[Christian Hagedorn]

On Mon, 8 Nov 2021 08:35:24 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> Looks good to me. Just wondering, if we run this during GVN, could it happen that the phis are never transformed because they are not registered for IGVN?

Thanks Tobias for your review. I think you're right - we could potentially miss a transformation when this happens during GVN. I've pushed an update by using `phase->record_for_igvn()` in the GVN case.

> Please add a `noreg-*` label to the bug.

Done, thanks!

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PR: https://git.openjdk.java.net/jdk/pull/6276