GATE | GATE-CS-2003 | Question 59

Consider the syntax directed definition shown below.

S → id : = E  {gen (id.place = E.place;);}
E → E1 + E2   {t = newtemp ( ); gen (t = El.place + E2.place;); E.place = t}
E → id     {E.place = id.place;}

Here, gen is a function that generates the output code, and newtemp is a function that returns the name of a new temporary variable on every call. Assume that ti\'s are the temporary variable names generated by newtemp. For the statement \'X: = Y + Z\', the 3-address code sequence generated by this definition is

(A)

X = Y + Z

(B)

t1 = Y + Z; X = t1

(C)

t1 =Y; t2 = t1 + Z; X = t2

(D)

t1 = Y; t2 = Z; t3 = t1 + t2; X = t3

Answer

Please comment below if you find anything wrong in the above post
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