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An Instruction Set for Evaluating Expressions

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1 Author(s)
Keedy, J.L. ; Institut fur Praktische Informatik Technische Hochschule Darmstadt

A stack-based instruction set which includes two-operand, one-operand and zero-operand instructions is proposed, and is shown to produce a more compact code and fewer instructions for evaluating assignment statements than one-operand and zero-operand stack instruction sets. If this instruction set is then extended to include two-operand memory-to-memory instructions, the combined instruction set also produces more compact code than a simple memory-to-memory instruction set, for a set of "typical" assignment statements weighed by the frequency of their occurrence in real programs. Finally various alternatives for optimizing the proposed instruction set are discussed.

Published in:

Computers, IEEE Transactions on  (Volume:C-32 ,  Issue: 5 )