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| -rw-r--r-- | compiler/iface/IfaceEnv.hs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/compiler/iface/IfaceEnv.hs b/compiler/iface/IfaceEnv.hs index b70c8e922f..d4aa03b8ca 100644 --- a/compiler/iface/IfaceEnv.hs +++ b/compiler/iface/IfaceEnv.hs @@ -202,6 +202,16 @@ However, there are two reasons why we might look up an Orig RdrName: go this route (Trac #8954). -} +{- +Note [Wiring in tuples] +~~~~~~~~~~~~~~~~~~~~~~~ + +The wiring-in of the tuple types is a bit tricky. The reason is that there are +very many of them and we consequently want to avoid cluttering the name cache +with them unnecessarily. For this reason we specially encode tuple Names in +interface files, +-} + lookupOrigNameCache :: OrigNameCache -> Module -> OccName -> Maybe Name lookupOrigNameCache nc mod occ | mod == gHC_TYPES |