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The program counter is typically set to a hard coded value when the CPU is first powered on, and will hence execute whatever machine code happens to be at this address. Similarly, the program counter can be set to execute whatever machine code is at some arbitrary address, even if this is not valid machine code.
Control flow. v. t. e. In computer science, control flow (or flow of control) is the order in which individual statements, instructions or function calls of an imperative program are executed or evaluated. The emphasis on explicit control flow distinguishes an imperative programming language from a declarative programming language.
The program counter ( PC ), [1] commonly called the instruction pointer ( IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register ( IAR ), [2] [1] the instruction counter, [3] or just part of the instruction sequencer, [4] is a processor register that indicates where a computer is in its program ...
The faster Julia source code can then be used from Python, or compiled to machine code, and based that way. Nuitka compiles Python into C. Numba uses LLVM to compile a subset of Python to machine code. Pythran compiles a subset of Python 3 to C++ . RPython can be compiled to C, and is used to build the PyPy interpreter of Python.
Low-level programming language. A low-level programming language is a programming language that provides little or no abstraction from a computer's instruction set architecture; commands or functions in the language are structurally similar to a processor's instructions. Generally, this refers to either machine code or assembly language.
A 1-bit saturating counter (essentially a flip-flop) records the last outcome of the branch. This is the most simple version of dynamic branch predictor possible, although it is not very accurate. A 2-bit saturating counter is a state machine with four states: Figure 2: State diagram of 2-bit saturating counter. Strongly not taken; Weakly not taken
Source lines of code. Source lines of code ( SLOC ), also known as lines of code ( LOC ), is a software metric used to measure the size of a computer program by counting the number of lines in the text of the program's source code. SLOC is typically used to predict the amount of effort that will be required to develop a program, as well as to ...
A counter machine or counter automaton is an abstract machine used in a formal logic and theoretical computer science to model computation. It is the most primitive of the four types of register machines. A counter machine comprises a set of one or more unbounded registers, each of which can hold a single non-negative integer, and a list of ...