3. SHL Operands

• The first operand of SHL is the destination.

• The second operand is the shift count:

  • SHL destination, count

• The count operand can be an immediate value or register CL.

• The following operand types are permitted:

      SHL  reg, imm8
      SHL  mem, imm8
      SHL  reg, CL
      SHL  mem, CL