Florian Hahn fdb9f96fa2
[LV] Consider earlier stores to invariant reduction address as dead.
For invariant stores to an address of a reduction, only the latest store
will be generated outside the loop. Consider earlier stores as dead.

This fixes a difference between the legacy and VPlan-based cost model.

Fixes https://github.com/llvm/llvm-project/issues/96294.
2024-08-04 20:54:26 +01:00
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