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Commit ff902080 authored by Craig Topper's avatar Craig Topper
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[RISCV] Use SLLI/SRLI instead of SLLIW/SRLIW for (srl (and X, 0xffff), C) custom isel on RV64. 

We don't need the sign extending behavior here and SLLI/SRLI
are able to compress to C.SLLI/C.SRLI.
parent 8fc8c745
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