Discussion
Translating a pointer dereference produces an instruction of the form
Answer: D
Correct answer: x = *y, an indirect assignment reading through the pointer
Three address code needs distinct forms for the pointer operations: taking an address, reading through a pointer, and writing through one. The dereference reads the value at the address held in y. Its presence complicates optimisation greatly, since the compiler may not know what y points at.
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