Shih-Po Hung
84be954cb2
[RISCV][CostModel] Refine Arithmetic reduction costs ( #79103 ) ...
This patch is split off from #77342
- Correct for CodeSize cost that 1 instruction is not included. 3 is
from {VMV.S, ReductionOp, VMV.X}
- Add SplitCost
Unordered reduction chain a series of VADD/VFADD/... which scales with
LMUL.
Ordered reductions chain a series of VFREDOSUMs.
- Use MVT to estimate VL.
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84be954cb2