Design of the Function getreg Pick a register Rx for x in x=y+z Almost as for y,differences: 1.Since a new value of x is being computed,a register that holds only x is a choice for Rx; 2.Ify is not used after the instruction,and Ry holds only y after being loaded,then Ry can be used as Rx;A similar option holds regarding z and Rz. CS308 Compiler Theory 10Design of the Function getReg • Pick a register Rx for x in x=y+z – Almost as for y, differences: 1. Since a new value of x is being computed, a register that holds only x is a choice for Rx; 2. If y is not used after the instruction, and Ry holds onl y y after bein g , loaded, then Ry can be used as Rx; A similar option holds regarding z and Rz · CS308 Compiler Theory 10