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-rw-r--r--ghc/compiler/stranal/WwLib.lhs21
1 files changed, 14 insertions, 7 deletions
diff --git a/ghc/compiler/stranal/WwLib.lhs b/ghc/compiler/stranal/WwLib.lhs
index e1a1da6463..b84f9c60b3 100644
--- a/ghc/compiler/stranal/WwLib.lhs
+++ b/ghc/compiler/stranal/WwLib.lhs
@@ -429,8 +429,9 @@ mkWWcpr body_ty RetCPR
arg = mk_ww_local arg_uniq con_arg_ty1
con_app = mkConApp data_con (map Type tycon_arg_tys ++ [Var arg])
in
- returnUs (\ wkr_call -> Case wkr_call arg [(DEFAULT, [], con_app)],
- \ body -> workerCase body work_wild [(DataAlt data_con, [arg], Var arg)],
+-- gaw 2004
+ returnUs (\ wkr_call -> Case wkr_call arg (exprType con_app) [(DEFAULT, [], con_app)],
+ \ body -> workerCase body work_wild con_arg_ty1 [(DataAlt data_con, [arg], Var arg)],
con_arg_ty1)
| otherwise -- The general case
@@ -445,8 +446,9 @@ mkWWcpr body_ty RetCPR
ubx_tup_app = mkConApp ubx_tup_con (map Type con_arg_tys ++ arg_vars)
con_app = mkConApp data_con (map Type tycon_arg_tys ++ arg_vars)
in
- returnUs (\ wkr_call -> Case wkr_call wrap_wild [(DataAlt ubx_tup_con, args, con_app)],
- \ body -> workerCase body work_wild [(DataAlt data_con, args, ubx_tup_app)],
+-- gaw 2004
+ returnUs (\ wkr_call -> Case wkr_call wrap_wild (exprType con_app) [(DataAlt ubx_tup_con, args, con_app)],
+ \ body -> workerCase body work_wild ubx_tup_ty [(DataAlt data_con, args, ubx_tup_app)],
ubx_tup_ty)
where
(_, tycon_arg_tys, data_con, con_arg_tys) = splitProductType "mkWWcpr" body_ty
@@ -467,8 +469,10 @@ mkWWcpr body_ty other -- No CPR info
-- This transform doesn't move work or allocation
-- from one cost centre to another
-workerCase (Note (SCC cc) e) arg alts = Note (SCC cc) (Case e arg alts)
-workerCase e arg alts = Case e arg alts
+-- gaw 2004
+workerCase (Note (SCC cc) e) arg ty alts = Note (SCC cc) (Case e arg ty alts)
+-- gaw 2004
+workerCase e arg ty alts = Case e arg ty alts
\end{code}
@@ -494,9 +498,12 @@ mk_unpk_case arg unpk_args boxing_con boxing_tycon body
-- A data type
= Case (Var arg)
(sanitiseCaseBndr arg)
+-- gaw 2004
+ (exprType body)
[(DataAlt boxing_con, unpk_args, body)]
-mk_seq_case arg body = Case (Var arg) (sanitiseCaseBndr arg) [(DEFAULT, [], body)]
+-- gaw 2004
+mk_seq_case arg body = Case (Var arg) (sanitiseCaseBndr arg) (exprType body) [(DEFAULT, [], body)]
sanitiseCaseBndr :: Id -> Id
-- The argument we are scrutinising has the right type to be