Consider the following ANSI C code segment: z = x + 3 + y->f1 + y->f2; for (i = 0; i i) p = p + x + 3; q = q + y->f1; else p = p + y->f2; q = q + x + 3; Assume that the variable y points to a struct (allocated on the heap) containing two fields f1 and f2 , and the local variables x , y , z , p , q , and i are allotted registers. Common sub-expression elimination (CSE) optimization is applied on the code. The number of addition and dereference operations (of the form y->f1 or y->f2 ) in the optimized code, respectively, are:
Topic-wise GATE CS PYQs with verified steps
