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Commit 2dd52f84 authored by Craig Topper's avatar Craig Topper
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[RISCV] Fold (srl (and X, 0xffff), C)->(srli (slli X, (XLen-16), (XLen-16) + C) even with Zbb/Zbp. 

We can use zext.h with Zbb, but srli/slli may offer more opportunities
for compression.
parent 81793640
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