Discussion
Constant folding is the transformation that
Answer: C
Correct answer: works out at compile time the value of an expression built from literals
Constant folding evaluates \( 3 \times 4 \) to 12 during compilation. It is distinct from constant propagation, which replaces a variable by a constant known to be in it - the two are almost always run together, each exposing further opportunities for the other.
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