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Commit 28a3e7de authored by jacquesguan's avatar jacquesguan
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[RISCV] Override hasAndNotCompare to use more andn when have Zbb extension. 

Enable transform (X & Y) == Y ---> (~X & Y) == 0 and (X & Y) != Y ---> (~X & Y) != 0 when have Zbb extension to use more andn instruction.

Differential Revision: https://reviews.llvm.org/D115922
parent ee5d5e19
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