Computer Dictionary of Information Technology

peephole optimisation

A kind of low-level code optimisation that considers only a few adjacent machine code instructions at a time and looks for certain combinations which can be replaced with more efficient sequences. E.g.

	ADD R0, #1
	ADD R0, #1

(add one to register R0) could be replaced by

	ADD R0, #2

as long as there were no jumps to the second instruction.