rs1 = EXTZ(X(rs1)[31..0]) let shamt = X(rs2)[4..0]; let result : bits(width) = 0; foreach (i from 0 to sizeof(xlen) by 8) { output[i..(i + 7)] = input[(j - 7)..j]; j = SEW - 1 = 1) are designated for custom use Reserved Designated for custom HINTs; no standard HINTs will
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