Question: rt b. optimize code using common sub expression and variable propagation. i=1 j=b a1:=3+1 y=x[a ] a 2:3+1 Q3:=4+j Q. 4= x[a 3] x[a 2]=

 rt b. optimize code using common sub expression and variable propagation.

rt b. optimize code using common sub expression and variable propagation. i=1 j=b a1:=3+1 y=x[a ] a 2:3+1 Q3:=4+j Q. 4= x[a 3] x[a 2]= 24 as 4+j x[as] =y C=x[y]

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