Register Transfer Language
(RTL) 1. A kind of hardware description language (HDL) used in describing the registers of a computer or digital electronic system, and the way in which data is transferred between them.
2.
An intermediate code for a machine with an infinite number of registers, used for machine-independent optimisation. RTL was developed by Chris Fraser <cwf@research.att.com> and J. Davidson <jwd@virginia.edu> at the University of Arizona in the early 1980s.
RTL is used by the GNU C compiler, gcc and by Davidson's VPCC (Very Portable C compiler).
["Quick Compilers Using Peephole Optimisation", Davidson et al, Soft. Prac. & Exp. 19(1):79-97 (Jan 1989)].
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