Control Flow Analysis 7 Identify Basic Blocks Input: A sequence of intermediate code statements 1. Determine the leaders, the first statements of basic blocks • The first statement in the …
The simplest control instruction is equivalent to a C goto statement ! goto label (in C) is the same as: ! B label (in ARM) ! B is shorthand for “branch”. This is called an unconditional branch …
• There is a branch from the last statement of B 1 to the first statement (leader) of B 2 • B 2 immediately follows B 1 in program order and B 1 does not end with an unconditional branch • …
control flow graph1 (CFG) is a directed graph in which each node represents a basic block and each edge represents the flow of control between basic blocks. To build a CFG we first build …
• Some programs, like gcc, have over 7000 conditional branches • In collisions, multiple branches share the same predictor – Constructive and destructive interference
In this paper, the novel idea including the key steps to reduce complexity and improve the code coverage is proposed. The main key steps are converting C program into Java, generating …
• Control Flow Graph (CFG ) • Nodes = basic blocks • Edges = Control flow transfers – Physical Program Layout • Mapping of CFG to linear program memory • Implied sequential control flow …
• There is a branch from the last statement of B 1 to the first statement (leader) of B 2 • B 2 immediately follows B 1 in program order and B 1 does not end with an unconditional branch • …
Control Flow Statements • Statements whose execution results in a choice between more than one execution paths • Continuation in a different location (unconditional branching) • …
• Idea: capture control flow of a program • How control transfers between basic blocks due to: • Conditionals • Loops
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