On PASCAL, code generation, and the CDC 6000 computer.
Niklaus Wirth · 1972
PASCAL is a general purpose programming language with characteristics similar to ALGOL 60, but with an enriched set of program- and data structuring facilities. It has been implemented on the CDC 6000 computer. This paper discusses selected topics of code generation, in particular the selection of instruction sequences to represent simple operations on arithmetic, Boolean, and powerset operands. Methods to implement recursive procedures are briefly described, and it is hinted that the more sophisticated solutions are not necessarily also the best. The CDC 6000 architecture appears as a frequent source of pitfalls and nuisances, and its main trouble spots are scrutinized and discussed.