Control Dependencies
Control dependence is a situation in which a program’s instruction executes if the previous instruction evaluates in a way that allows its execution.
A statement S2 is control dependent on S1 (written ) if and only if S2's execution is conditionally guarded by S1. The following is an example of such a control dependence:
S1 if x > 2 goto L1 S2 y := 3 S3 L1: z := y + 1Here, S2 only runs if the predicate in S1 is false.
Read more about this topic: Dependence Analysis
Famous quotes containing the word control:
“Not being able to control events, I control myself; and I adapt myself to them, if they do not adapt themselves to me.”
—Michel de Montaigne (1533–1592)