Code optimization

 Code optimization phase improve the intermediate code ie., It reduces the code by removing the repeated or unwanted instructions from the intermediate code. The above giving intermediate code can be optimized to the following

                             Temp1:=id3+60.o                            

                             id1:=id2+temp1

compiler can deduce that the conversion of 60 from integer to real can be done all at

once at compile time. So that into real operations can be eliminated.temp3is used to

transmit its value to id1 instead which can be directly substituted to id1.