X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fvectorise%2FVectorise%2FType%2FPADict.hs;h=6c94ae0258776320d5be0e8e57e1408cd4e1bcb1;hp=6b67f66678614ba6bbbe3f7bb2e93d7ee6535086;hb=fff1f6194c3c39de53cd645bda9865fb131b1c68;hpb=ed333003733fd3f3a3de015998f59ee1a709230a

diff --git a/compiler/vectorise/Vectorise/Type/PADict.hs b/compiler/vectorise/Vectorise/Type/PADict.hs
index 6b67f66..6c94ae0 100644
--- a/compiler/vectorise/Vectorise/Type/PADict.hs
+++ b/compiler/vectorise/Vectorise/Type/PADict.hs
@@ -53,20 +53,11 @@ buildPADict vect_tc prepr_tc arr_tc repr
                $ Type inst_ty : map (method_call args) method_ids
 
       -- Build the type of the dictionary function.
-      pa_tc          <- builtin paTyCon
-      let pa_opitems = [(id, NoDefMeth) | id <- method_ids]
-      let pa_cls     = mkClass 
-			(tyConName pa_tc)
-			tvs		-- tyvars of class
-			[]		-- fundeps
-			[]		-- superclass predicates
-			[]		-- superclass dict selectors
-			[]		-- associated type families
-			pa_opitems	-- class op items
-			pa_tc		-- dictionary type constructor
-			
-      let dfun_ty = mkForAllTys tvs
-                  $ mkFunTys (map varType args) (PredTy $ ClassP pa_cls [inst_ty])
+      pa_tc		<- builtin paTyCon
+      let Just pa_cls	= tyConClass_maybe pa_tc
+
+      let dfun_ty	= mkForAllTys tvs
+			$ mkFunTys (map varType args) (PredTy $ ClassP pa_cls [inst_ty])
 
       -- Set the unfolding for the inliner.
       raw_dfun <- newExportedVar dfun_name dfun_ty