sh1add Shift left by 1 and add Shifts xs1 to the left by 1 bit and adds it to xs2. Assembly format sh1add xd, xs1, xs2 Decode Variables Bits<5> xs2 = $encoding[24:20]; Bits<5> xs1 = $encoding[19:15]; Bits<5> xd = $encoding[11:7]; Execution X[xd] = X[xs2] + (X[xs1] << 1); Encoding Defining extension Zba Access M Always Containing profiles Mandatory: RVA22S64, RVA22U64, RVA23S64, RVA23U64, RVB23S64, RVB23U64 Optional: None