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Commit c069e370 authored by Yeting Kuo's avatar Yeting Kuo
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[RISCV] Add DAGCombine to fold base operation and reduction. 

Transform (<bop> x, (reduce.<bop> vec, splat(neutral_element))) to
(reduce.<bop> vec, splat (x)).

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D122563
parent 64421e19
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