The concept and properties of the basic code block are extended to a

We assume 'a control flow graph CFG is augmented wit,h an entry node . ..

For example, control flow graph C divides the space into five regions, four

Figure 1. Procedure Sums, its control-flow graph in the upper right, its control-

Mar 28, 2011 . 170. 3.4.1. This control flow graph has 1 region, 2 nodes and 2 edges. The

entry, single-exit regions within each function's control flow graph. These regions

Besides, more aggressive EH optimization option "-foptimize-regions" is added.

Program Representation. • A region in a control flow graph is: – a set of basic

The problem of region scheduling is that it requires loops in the control flow

Each dependence DAG is then linked as a control flow graph. Examining of each

plementation complexity, restrictions on the control flow graphs (CFGs) they can

A binary decision predicate appears on the control flow graph as a node with

Two vertices in a control-flow graph (which may represent instructions or basic

Global optimizations and data flow analysis operate on a control flow graph, . .

When applied to a loop in the control flow graph, our definition of control

Dominance in Control Flow Graphs. Definition 1. A node x in a . .. That is access

If nodes a and b represent program regions containing assignment statements,

In [1] a speedup over 40% is reported using region schedul- ing. The problem of

Control Flow Graphs. Nodes. Statements or . Possible transfer of control.

whole OpenMP constructs such as parallel regions, critical sections, functions, or

constraints, the program is split into small regions where a local safe WCET .

tions from different control-flow regions. . . control dependence arcs to the

We give a linear-time algorithm for finding SESE regions and for building the PST

Outline of the Lecture. Why control flow analysis? Dominators and natural loops.

A Region is a connected subgraph of a control flow graph that has exactly two

independent representation of control flow in programs used . Control Flow

It first finds the regions of control dependence then uses part of the algorithm . a

Oct 25, 2011 . A control flow graph may be generated from a model. The control flow graph may

Array Privatization; Array Section Privatization; Array Element Regions; Call

Mar 1, 2011 . in the area of decompilation and graph restructuring. The concept section

Cyclomatic complexity: contol flow within module. Halstead's . Control-flow

of a program's control flow graph as a scheduling region. Ebcioglu's VLIW

. and adding region markers to facilitate the creation of the control flow graph. .

single entry single exit (SESE) regions of the control flow graph. We give a linear-

Jump to: navigation, search. Simplified control flowgraphs. A control flow graph (

Feb 15, 2012 . A Control Flow Graph (CFG) is a directed graph G(V;E) which consists . . A pre-

particular optimization phases, such as code scheduling and register allocation.

Control flow graph & cyclometric complexity for folowing procedure . Count the

Control flow graph is the form of a picture where the representing of the execution

A control flow graph is a representation of a program where contiguous regions

represents both, a traditional control flow graph and a data flow graph. The edges

Control flow graph with dominator relation to identify loops. ■. Most commonly

code, or at least its entry point, resides in the unexplored region, the

it inefficient to uniformly sample the paths in the control flow graph. The

Flow graphs for modern languages require more sophistication to represent more

At the heart of our method is a new program decomposition based on identifying

by a high-level programs representation, such as Control Flow Graph. (CFG). . .

for finding regions in reducible control-flow graphs in near-linear time, . . Vertices

The concept and properties of the basic code block are extended to a

Generates dot graph output; Example: control flow graphs and call graphs.

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