Jul 3, 2018 · Following are the simple rules that we can follow to draw a CFG. All nodes have a directed edge either coming to them or going out of them or both. Entry node (first statement) has only outgoing edges and Exit node has only incoming edges.

Nov 22, 2024 · Control Flow Graph of above example will be: Visualizes program flow: Easy to see how a program runs. Helps find errors: Detects unreachable code or infinite loops. Useful for optimization: Improves program performance. Aids testing: Ensures all parts of the code are tested. Complex for big programs: Hard to understand.

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.

May 13, 2013 · In this example, there is only one such node, namely the one on line 40. You can use PIPI's pycfg to generate the text and a python program called cfg.py (included below) to create a nice graphical diagram. As an example, I converted your code above to: print(x) . if x%2: . print(x**2) . break . else: . print(x**3) . print("wpp") . print("done") .

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 ...

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 …

A Control Flow Graph (CFG) is a compact and intuitive representation of all control flow paths in a program. Nodes in the CFG are called basic blocks, which contains statement numbers that are known to be executed one by one in sequence.

Flow Graphs 532{534 Summary A Control Flow Graph (CFG) is a graph whose nodes are basic blocks. There is an edge from basic block B1 to B2 if control can °ow from B1 to B2. Control °ows in and out of a CFG through two special nodes ENTER and EXIT . We construct a CFG for each procedure. This representation is used during code generation and ...

Control-Flow Graph A direct graph where • Nodes are basic blocks (sequence of simple statements) • Edges are possible control flow Building the CFG is an intermediate step for: • Static Analysis (Data Flow) • Compilation (we need to recover exact control flow) 2

Jan 11, 2025 · I believe the first three lines (initialization) form a basic block and can be grouped into one node in the control flow graph. If the condition x < v[mid] is true, the code updates high (Line 5) and loops back to the while condition. If false, it checks the else if (x > v[mid]) condition.