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Peephole optimization is an optimization technique performed on a small set of compiler -generated instructions, known as a peephole or window, [1] that involves replacing the instructions with a logically equivalent set that has better performance. For example: The term peephole optimization was introduced by William Marshall McKeeman in 1965.
Nuitka. Nuitka (pronounced as / njuːtkʌ / [ 2]) is a source-to-source compiler which compiles Python code to C source code, applying some compile-time optimizations in the process such as constant folding and propagation, built-in call prediction, type inference, and conditional statement execution. [ 3][ 4] Nuitka initially was designed to ...
process.h is a C header file which contains function declarations and macros used in working with threads and processes. Most C compilers that target DOS , Windows 3.1x , Win32 , OS/2 , Novell NetWare or DOS extenders supply this header and the library functions in their C library.
Profile-guided optimization. Profile-guided optimization ( PGO, sometimes pronounced as pogo[ 1] ), also known as profile-directed feedback ( PDF ), [ 2] and feedback-directed optimization ( FDO) [ 3] is a compiler optimization technique in computer programming that uses profiling to improve program runtime performance .
Register allocation. In compiler optimization, register allocation is the process of assigning local automatic variables and expression results to a limited number of processor registers . Register allocation can happen over a basic block ( local register allocation ), over a whole function/ procedure ( global register allocation ), or across ...
Whitesmiths Ltd. was a software company founded in New York City by P. J. Plauger, Mark Krieger and Gabriel Pham, [1] and last located in Westford, Massachusetts. It sold a Unix-like operating system called Idris, as well as the first commercial C compiler, Whitesmiths C . The Whitesmiths compiler, first written for the PDP-11, was released in ...
An optimizing compiler is a compiler designed to generate code that is optimized in aspects such as minimizing program execution time, memory use, storage size, and power consumption. Optimization is generally implemented as a sequence of optimizing transformations , algorithms that transform code to produce semantically equivalent code ...
Portable C Compiler. The Portable C Compiler (also known as pcc or sometimes pccm - portable C compiler machine) is an early compiler for the C programming language written by Stephen C. Johnson of Bell Labs in the mid-1970s, [ 1] based in part on ideas proposed by Alan Snyder in 1973, [ 2][ 3] and "distributed as the C compiler by Bell Labs ...