What role does a transfer function play in the Constant Propagation Framework…
2025
What role does a transfer function play in the Constant Propagation Framework (CPF) during compiler optimization?
- A.
It determines how constant values are propagated across basic blocks.
- B.
It manages the register allocation strategy for constants.
- C.
It checks runtime exceptions due to division by zero.
- D.
It identifies unreachable code sections within a control flow graph.
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Correct answer: A
In the Constant Propagation Framework, a transfer function maps input lattice values to output lattice values for each statement. It determines how constants propagate through assignments and arithmetic operations, updating the program state lattice accordingly.