From 4e105ef54da56080ce6ec27c8ca61c63171be009 Mon Sep 17 00:00:00 2001
From: Roman Leshchinskiy <rl@cse.unsw.edu.au>
Date: Thu, 26 Jul 2007 03:12:47 +0000
Subject: [PATCH] Use the right dictionary when calling lengthPA

---
 compiler/vectorise/VectUtils.hs |   17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/compiler/vectorise/VectUtils.hs b/compiler/vectorise/VectUtils.hs
index 0d200a8..71ba7a3 100644
--- a/compiler/vectorise/VectUtils.hs
+++ b/compiler/vectorise/VectUtils.hs
@@ -43,7 +43,7 @@ isAnnTypeArg (_, AnnType t) = True
 isAnnTypeArg _              = False
 
 isClosureTyCon :: TyCon -> Bool
-isClosureTyCon tc = tyConUnique tc == closureTyConKey
+isClosureTyCon tc = tyConName tc == closureTyConName
 
 splitClosureTy :: Type -> (Type, Type)
 splitClosureTy ty
@@ -53,6 +53,17 @@ splitClosureTy ty
 
   | otherwise = pprPanic "splitClosureTy" (ppr ty)
 
+isPArrayTyCon :: TyCon -> Bool
+isPArrayTyCon tc = tyConName tc == parrayTyConName
+
+splitPArrayTy :: Type -> Type
+splitPArrayTy ty
+  | Just (tc, [arg_ty]) <- splitTyConApp_maybe ty
+  , isPArrayTyCon tc
+  = arg_ty
+
+  | otherwise = pprPanic "splitPArrayTy" (ppr ty)
+
 mkPADictType :: Type -> VM Type
 mkPADictType ty
   = do
@@ -118,7 +129,9 @@ paMethod method ty
       return $ mkApps (Var fn) [Type ty, dict]
 
 lengthPA :: CoreExpr -> VM CoreExpr
-lengthPA x = liftM (`App` x) (paMethod lengthPAVar (exprType x))
+lengthPA x = liftM (`App` x) (paMethod lengthPAVar ty)
+  where
+    ty = splitPArrayTy (exprType x)
 
 replicatePA :: CoreExpr -> CoreExpr -> VM CoreExpr
 replicatePA len x = liftM (`mkApps` [len,x])
-- 
1.7.10.4