Textbooks about compilation are not numerous, and probably none is above criticism. Gries ' work [I], although ten years old, is still popular, because of its simple and pragmatic approach, but its programming style and theoretical foundations are now obsolete. The second book by Aho and Ullman [2], although less theoretically oriented than their first one [3],is much more up to date, but it gives too much emphasis to parsing, and especially to LR methods, while almost forgetting meta-compilers. Cocke and Schwartz [4] provide useful information about global optimization, and we think it regrettable that their book has not been published. However, they stop short of object code production, like Lewis, Rosenkrantz, and Stearns [5]. And for the French-speaking teacher or student, there exists almost nothing usable in his native language. Consequently,

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