Luke Lau d8671280d4
[VPlan] Add nuw to unrolled canonical IVs (#183716)
After #183080, the canonical IV (not the increment!) can't overflow. So
now canonical IVs that are unrolled will have steps that don't overflow,
so we can add the nuw flag.

This allows us to tighten the VPlanVerifier isKnownMonotonic check by
restricting it to adds with nuw.
2026-02-27 11:46:29 +00:00
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