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Document unneeded_code.m.

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compiler/notes/compiler_design.html:
	Document unneeded_code.m.
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Zoltan Somogyi
2001-01-19 01:42:29 +00:00
parent bbf4111d3a
commit ccf4e35bb5
1 changed files with 7 additions and 2 deletions
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@@ -580,7 +580,12 @@ Most of the remaining HLDS-to-HLDS transformations are optimizations:
<li> issue warnings about unused arguments from predicates, and create
specialized versions without them (unused_args.m); type_infos are
often unused.
<li> unneeded_code.m looks for goals whose results are either not needed
at all, or needed in some branches of computation but not others. Provided
that the goal in question satisfies some requirements (e.g. it is pure,
it cannot fail etc), it either deletes the goal or moves it to the
computation branches where its output is needed.
<li> elimination of dead procedures (dead_proc_elim.m). Inlining, higher-order
specialization and the elimination of unused args can make procedures dead
@@ -1184,6 +1189,6 @@ Some of them are obsolete; other are work-in-progress.
<hr>
<!---------------------------------------------------------------------------->
Last update was $Date: 2000-12-13 12:12:59 $ by $Author: fjh $@cs.mu.oz.au. <br>
Last update was $Date: 2001-01-19 01:42:29 $ by $Author: zs $@cs.mu.oz.au. <br>
</body>
</html>