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Add no-op case for addIdSpecialisations (very minor optimisation)
[ghc-hetmet.git]
/
compiler
/
specialise
/
Rules.lhs
diff --git
a/compiler/specialise/Rules.lhs
b/compiler/specialise/Rules.lhs
index
39a9f05
..
51dc435
100644
(file)
--- a/
compiler/specialise/Rules.lhs
+++ b/
compiler/specialise/Rules.lhs
@@
-189,6
+189,8
@@
addSpecInfo (SpecInfo rs1 fvs1) (SpecInfo rs2 fvs2)
= SpecInfo (rs1 ++ rs2) (fvs1 `unionVarSet` fvs2)
addIdSpecialisations :: Id -> [CoreRule] -> Id
+addIdSpecialisations id []
+ = id
addIdSpecialisations id rules
= setIdSpecialisation id $
extendSpecInfo (idSpecialisation id) rules