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Dead code is normally considered dead unconditionally. Therefore, it is reasonable attempting to remove dead code through dead-code elimination at compile time. However, in practice it is also common for code sections to represent dead or unreachable code only under certain conditions, which may not be known at the time of compilation or assembly.
Unreachable code that a programmer decided not to delete because it is mingled with reachable code; Potentially reachable code that current use cases never need; Dormant code that is kept intentionally in case it is needed later; Code used only for debugging. Legacy code is that which was once useful but is no longer used or required.
Lcov supports statement, function, and branch coverage measurement. [7] There is also a Windows version. Gcovr provides a utility for managing the use of gcov and generating summarized code coverage results. This command is inspired by the Python coverage.py package, which provides a similar utility in Python.
Self-modifying code can involve overwriting existing instructions or generating new code at run time and transferring control to that code. Self-modification can be used as an alternative to the method of "flag setting" and conditional program branching, used primarily to reduce the number of times a condition needs to be tested.
Source Code Control System (SCCS) is a version control system designed to track changes in source code and other text files during the development of a piece of software. . This allows the user to retrieve any of the previous versions of the original source code and the changes which are st
Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})
If the mask is 0, no branch occurs. In the case of the NOPR instruction, the second value in the second byte is the register to branch on. If register 0 is chosen, no branch occurs regardless of the mask value. Thus, if either of the two values in the second byte is 0, the branch will not happen.
Add one to branch count when: Occurrence of a function call or a class method call. Occurrence of any goto statement which has a target at a deeper level of nesting than the level to the goto. Occurrence of ‘new’ or ‘delete’ operators. Add one to condition count when: Occurrence of a conditional operator (<, >, <=, >=, ==, !=).