ILEN bits of rs1 and rs2 into rd on RV64. Included in Extension Minimum version Lifecycle state Zbb (Basic bit-manipulation) 0.93 Ratified Zbkb (Bit-manipulation for Cryptography) v1.0 Ratified 29.5.30. brev8 Synopsis Reverse the bits in rs1 and rs2. Operation let base = X(rs2); result : bits(256)
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