#16039: 'GHC.Magic.noinline <var>' should not float out -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: heisenbug Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: FloatOut Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #15155 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): I think the underlying point is that you want `(noinline f)` to be treated very like `f`, for many purposes. Because it'll turn ''into'' `f` in `CorePrep`. Particularly, I think you want `exprIsTrivial` to be true of it. So maybe instead of {{{ exprIsTrivial (App e arg) = not (isRuntimeArg arg) && exprIsTrivial e }}} you want {{{ exprIsTrivial (App e arg) | not (isRuntimeArg arg) = exprIsTrivial e | App (Var f) _ <- e, isInlineId f = exprIsTrivial arg | otherwise = False }}} Not very nice, and it's possible that other functions may need similar treatment. But nothing better jumps out at me. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16039#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler