X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcRnTypes.lhs;h=37f1eab752d8af093873ed39b7d4952e7fd8b8d9;hb=00abc3998739f7db38a2466b6e730105f16f8ddf;hp=b335b54391b5271db23dec4ffeb3a81ffd900243;hpb=5ad61e1470db6dbc8279569c5ad1cc093f753ac0;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcRnTypes.lhs b/compiler/typecheck/TcRnTypes.lhs
index b335b54..37f1eab 100644
--- a/compiler/typecheck/TcRnTypes.lhs
+++ b/compiler/typecheck/TcRnTypes.lhs
@@ -469,7 +469,8 @@ of whether the imported things are actually used or not
 It is used 	* when processing the export list
 		* when constructing usage info for the inteface file
 		* to identify the list of directly imported modules
-			for initialisation purposes
+			for initialisation purposes and
+			for optimsed overlap checking of family instances
 		* when figuring out what things are really unused
 
 \begin{code}