From: simonpj@microsoft.com <unknown>
Date: Tue, 22 Jan 2008 12:25:47 +0000 (+0000)
Subject: Comments only
X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=commitdiff_plain;h=3e35714a039779be26df0bbdeba4e2a282ec799a

Comments only
---

diff --git a/compiler/basicTypes/IdInfo.lhs b/compiler/basicTypes/IdInfo.lhs
index 7eacbd8..3e64ee5 100644
--- a/compiler/basicTypes/IdInfo.lhs
+++ b/compiler/basicTypes/IdInfo.lhs
@@ -477,7 +477,7 @@ data SpecInfo
 	VarSet		-- Locally-defined free vars of *both* LHS and RHS 
 			-- of rules.  I don't think it needs to include the
 			-- ru_fn though.
-			-- Note [Rule dependency info]
+			-- Note [Rule dependency info] in OccurAnal
 
 emptySpecInfo :: SpecInfo
 emptySpecInfo = SpecInfo [] emptyVarSet
@@ -500,16 +500,6 @@ setSpecInfoHead fn (SpecInfo rules fvs)
 seqSpecInfo (SpecInfo rules fvs) = seqRules rules `seq` seqVarSet fvs
 \end{code}
 
-Note [Rule dependency info]
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-THe VarSet in a SpecInfo is used for dependency analysis in the 
-occurrence analyser.  We must track free vars in *both* lhs and rhs.  Why both?  
-Consider
-	x = y
- 	RULE f x = 4
-Then if we substitute y for x, we'd better do so in the
- rule's LHS too, so we'd better ensure the dependency is respected
-
 
 
 %************************************************************************