A microcode compiler for the watch‐oriented RISC processor

Abstract

AbstractThe WORP project embodies the design of a real‐time oriented RISC microprocessor and a complete application development environment for this processor. The three most original aspects of this project are: (a) the microprocessor has no assembly language, but is programmed in microcode; the compiler will translate the high‐level language directly into microcode; (b) there is a certain amount of parallelism available at the microcode level; the compiler will take advantage of this parallelism without putting extra burden on the programmer; (c) the compiler performs instruction rescheduling in order to take further advantage of the parallelism available at the microcode level. This paper describes the high‐level language and compiler aspects of the WORP project, and concentrates on the instruction rescheduling and other optimizations performed by the compiler. A modest comparative bench‐mark is provided.