Control Flow Graph (CFG) A control flow graph(CFG), or simply a flow graph, is a directed graph in which: –(i) the nodes are basic blocks; and –(ii) the edges are induced from the possible flow of the program The basic block whose leader is the first intermediate language statement is …

Nov 22, 2024 · The control flow graph shows all the paths that can be traversed during a program execution. A control flow graph is a directed graph. Edges in CFG portray control flow paths and the nodes in CFG portray basic blocks.

A control-flow graph (CFG) of a program is a graph \(G = (V, E)\) where: \(V\) is the set of all (maximal) basic blocks in the program code, plus one special elements representing the end of a program.

Control-Flow Graphs •Graphical representation of a program •Edges in graph represent control flow: how execution traverses a program •Nodes represent statements 6 x := 0; y := 0; while (n > 0) {if (n % 2 = 0) {x := x + n; y := y + 1;} else {y := y + n; x := x + 1;} n := n - 1;} print(x); x:=x+n y:=y+1 y := 0 n > 0 n%2=0 y:=y+n print(x) n ...

Flow Models The control flow graph and state machine models introduced in the previous chapter capture one aspect of the dependencies among parts of a program. They explicitly represent control flow but deemphasize transmission of information through program variables. Data flow models provide a complementary view, emphas izing and making

Figure 6.4: Calculating control dependence for node E in the control flow graph of the GCD method. Nodes C, D, and E in the gray region are post-dominated by E,

Control Flow Graphs • Control Flow Graph (CFG) = graph representation of computation and control flow in the program – framework to statically analyze program control-flow •In a CFG: – Nodes are basic blocks; they represent computation – Edges characterize control flow between basic blocks • Can build the CFG representation either ...

Control flow information is used in Path Oriented Testing, Goal Oriented testing and Random testing. Figure 4 shows the control flow graph for GCD computation program listed in Annexure. This...

Finding GCD and LCM of Given Numbers using C. The Flowchart given here represents the calculation of GCD (Greatest Common Divisor). The flowchart drawn using Raptor.

Control Flow Graph¶ The code in this notebook helps with obtaining the control flow graph of python functions.