X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fvectorise%2FVectMonad.hs;h=803914cc1e40c5884093d0c15cb0ef37614efece;hb=942fd04666dfbcb6bf3088ab0ef55e60d18ae67a;hp=5c12bee40cd08557499128a6286bc07a07c68f95;hpb=89cf21d79ef8101e424626ad9023fd97e33af43e;p=ghc-hetmet.git

diff --git a/compiler/vectorise/VectMonad.hs b/compiler/vectorise/VectMonad.hs
index 5c12bee..803914c 100644
--- a/compiler/vectorise/VectMonad.hs
+++ b/compiler/vectorise/VectMonad.hs
@@ -376,7 +376,9 @@ defTyCon tc tc' = updGEnv $ \env ->
   env { global_tycons = extendNameEnv (global_tycons env) (tyConName tc) tc' }
 
 lookupDataCon :: DataCon -> VM (Maybe DataCon)
-lookupDataCon dc = readGEnv $ \env -> lookupNameEnv (global_datacons env) (dataConName dc)
+lookupDataCon dc
+  | isTupleTyCon (dataConTyCon dc) = return (Just dc)
+  | otherwise = readGEnv $ \env -> lookupNameEnv (global_datacons env) (dataConName dc)
 
 defDataCon :: DataCon -> DataCon -> VM ()
 defDataCon dc dc' = updGEnv $ \env ->