Field accessors unnecessarily kept alive

Suppose you have a record with some non-exported field accessors, like so:

module Lib (Rec) where

data Rec = Rec
  { f1 :: Int
  , f2 :: Int
  , f3 :: Int
  , f4 :: Int
  , f5 :: Int
  }

Code for fields f1, f2 ... are redundantly generated, optimized etc. and they made it to the object file, causing wasted compile times and bloated object files.

Trac metadata

Trac field	Value
Version	8.0.1
Type	FeatureRequest
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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