diff options
| -rw-r--r-- | compiler/basicTypes/IdInfo.hs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/basicTypes/IdInfo.hs b/compiler/basicTypes/IdInfo.hs index 2113cd4bcf..97d4186d4f 100644 --- a/compiler/basicTypes/IdInfo.hs +++ b/compiler/basicTypes/IdInfo.hs @@ -198,6 +198,10 @@ pprIdDetails other = brackets (pp other) -- Most of the 'IdInfo' gives information about the value, or definition, of -- the 'Id', independent of its usage. Exceptions to this -- are 'demandInfo', 'occInfo', 'oneShotInfo' and 'callArityInfo'. +-- +-- Performance note: when we update 'IdInfo', we have to reallocate this +-- entire record, so it is a good idea not to let this data structure get +-- too big. data IdInfo = IdInfo { arityInfo :: !ArityInfo, -- ^ 'Id' arity |