Commit acaa6e12 authored by simonpj's avatar simonpj
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[project @ 1999-08-16 15:53:50 by simonpj]

Add note about exports of RULES
parent c8a3ddcb
% $Id: glasgow_exts.vsgml,v 1.13 1999/08/02 09:52:43 simonmar Exp $
% $Id: glasgow_exts.vsgml,v 1.14 1999/08/16 15:53:50 simonpj Exp $
% GHC Language Extensions.
......@@ -2120,6 +2120,12 @@ because @wibble@ will be inlined (it's small).
Later on in compilation, GHC starts inlining even things on the
LHS of rules, but still leaves the rules enabled. This inlining
policy is controlled by the per-simplification-pass flag @-finline-phase@n.
<item> All rules are implicitly exported from the module, and are therefore
in force in any module that imports the module that defined the rule, directly
or indirectly. (That is, if A imports B, which imports C, then C's rules are
in force when compiling A.) The situation is very like that for instance
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