Elvis Wang 332fe08f1d [VPlan] Implement VPlan-based cost model for VPReduction, VPExtendedReduction and VPMulAccumulateReduction. (#113903) ...

This patch implement the VPlan-based cost model for VPReduction,
VPExtendedReduction and VPMulAccumulateReduction.

With this patch, we can calculate the reduction cost by the VPlan-based
cost model so remove the reduction costs in `precomputeCost()`.

Ref: Original instruction based implementation:
https://reviews.llvm.org/D93476

2025-05-29 11:15:16 +08:00

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