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Tiny optimisation/simplification to FunDeps.grow
[ghc-hetmet.git]
/
compiler
/
types
/
FunDeps.lhs
diff --git
a/compiler/types/FunDeps.lhs
b/compiler/types/FunDeps.lhs
index
3d90126
..
a7e9f19
100644
(file)
--- a/
compiler/types/FunDeps.lhs
+++ b/
compiler/types/FunDeps.lhs
@@
-153,7
+153,7
@@
See also Note [Ambiguity] in TcSimplify
\begin{code}
grow :: [PredType] -> TyVarSet -> TyVarSet
grow preds fixed_tvs
- | null preds = real_fixed_tvs
+ | null preds = fixed_tvs
| otherwise = loop real_fixed_tvs
where
-- Add the implicit parameters;