NOINLINE pragma ignored

Compile the following program

{-# OPTIONS_GHC -O -ddump-simpl #-}
module F(test) where

class AsInt a where
  {-# NOINLINE toInt #-}
  toInt   :: a -> Int
  {-# NOINLINE fromInt #-}
  fromInt :: Int -> a

{-# INLINE onInt #-}
onInt :: AsInt a => (Int -> Int) -> (a -> a)
onInt f x = fromInt (f (toInt x))

test :: AsInt a => (Int -> Int) -> (Int -> Int) -> (a -> a)
test h g = onInt h . onInt g

Look at the final output for test:

F.test =
  \ (@ a_a6c)
    ($dAsInt_a6m :: F.AsInt a_a6c)
    (eta_s6B :: GHC.Base.Int -> GHC.Base.Int)
    (eta1_s6C :: GHC.Base.Int -> GHC.Base.Int)
    (eta2_s6D :: a_a6c) ->
    case $dAsInt_a6m of tpl_B1 { F.:DAsInt tpl1_B2 tpl2_B3 ->
    tpl2_B3 (eta_s6B (tpl1_B2 (tpl2_B3 (eta1_s6C (tpl1_B2 eta2_s6D)))))

The method (selectors) toInt and fromInt have been inlined despite the NOINLINE pragma. The compiler should either obey the pragma, or tell me that I can't have it in that place.

Trac metadata

Trac field	Value
Version	6.9
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	lennart@augustsson.net
Operating system	Unknown
Architecture	Unknown