Trim imports, reformatting

diff --git a/compiler/specialise/SpecConstr.lhs b/compiler/specialise/SpecConstr.lhs
index 1ee5935..78d1731 100644 (file)
--- a/compiler/specialise/SpecConstr.lhs
+++ b/compiler/specialise/SpecConstr.lhs
@@ -14,13 +14,11 @@ import CoreSyn
 import CoreLint                ( showPass, endPass )
 import CoreUtils       ( exprType, mkPiTypes )
 import CoreFVs                 ( exprsFreeVars )
-import CoreSubst       ( Subst, mkSubst, substExpr )
 import CoreTidy                ( tidyRules )
 import PprCore         ( pprRules )
 import WwLib           ( mkWorkerArgs )
-import DataCon         ( dataConRepArity, isVanillaDataCon, 
-                         dataConUnivTyVars )
-import Type            ( Type, tyConAppArgs, tyVarsOfTypes )
+import DataCon         ( dataConRepArity, dataConUnivTyVars )
+import Type            ( Type, tyConAppArgs )
 import Rules           ( matchN )
 import Id              ( Id, idName, idType, isDataConWorkId_maybe, 
                          mkUserLocal, mkSysLocal, idUnfolding, isLocalId )
@@ -429,12 +427,6 @@ data ConValue  = CV AltCon [CoreArg]
 instance Outputable ConValue where
    ppr (CV con args) = ppr con <+> interpp'SP args
 
-refineConstrEnv :: Subst -> ConstrEnv -> ConstrEnv
--- The substitution is a type substitution only
-refineConstrEnv subst env = mapVarEnv refine_con_value env
-  where
-    refine_con_value (CV con args) = CV con (map (substExpr subst) args)
-
 emptyScEnv = SCE { scope = emptyVarEnv, cons = emptyVarEnv }
 
 data HowBound = RecFun -- These are the recursive functions for which 
@@ -746,9 +738,8 @@ specialise env fn bndrs body body_usg
                         [ exprsFreeVars pats `delVarSetList` vs 
                         | (vs,pats) <- good_calls ]
              uniq_calls = nubBy (same_call in_scope) good_calls
-    in
-    mapAndUnzipUs (spec_one env fn (mkLams bndrs body)) 
-                 (uniq_calls `zip` [1..]) }
+       ; mapAndUnzipUs (spec_one env fn (mkLams bndrs body)) 
+                       (uniq_calls `zip` [1..]) }
   where
        -- Two calls are the same if they match both ways
     same_call in_scope (vs1,as1)(vs2,as2)
@@ -965,4 +956,5 @@ is_con_app_maybe env expr
 mk_con_app :: AltCon -> [CoreArg] -> CoreExpr
 mk_con_app (LitAlt lit)  []   = Lit lit
 mk_con_app (DataAlt con) args = mkConApp con args
+mk_con_app other args = panic "SpecConstr.mk_con_app"
 \end{code}