module SimplCore ( core2core ) where
IMP_Ubiq(){-uitous-}
+IMPORT_1_3(IO(hPutStr,stderr))
import AnalFBWW ( analFBWW )
import Bag ( isEmptyBag, foldBag )
import CoreLint ( lintCoreBindings )
import CoreSyn
import CoreUnfold
-import CoreUtils ( substCoreBindings, manifestlyWHNF )
+import CoreUtils ( substCoreBindings )
import ErrUtils ( ghcExit )
+import FiniteMap ( FiniteMap )
import FloatIn ( floatInwards )
import FloatOut ( floatOutwards )
import FoldrBuildWW ( mkFoldrBuildWW )
import Id ( idType, toplevelishId, idWantsToBeINLINEd,
- unfoldingUnfriendlyId,
+ unfoldingUnfriendlyId, isWrapperId,
nullIdEnv, addOneToIdEnv, delOneFromIdEnv,
lookupIdEnv, SYN_IE(IdEnv),
GenId{-instance Outputable-}
import SAT ( doStaticArgs )
import SimplMonad ( zeroSimplCount, showSimplCount, SimplCount )
import SimplPgm ( simplifyPgm )
-import SimplVar ( leastItCouldCost )
import Specialise
import SpecUtils ( pprSpecErrs )
import StrictAnal ( saWwTopBinds )
#endif
isWrapperFor = panic "SimplCore.isWrapperFor (ToDo)"
-isWrapperId = panic "SimplCore.isWrapperId (ToDo)"
\end{code}
\begin{code}
-> [CoreBinding] -- input...
-> IO
([CoreBinding], -- results: program, plus...
- IdEnv UnfoldingDetails, -- unfoldings to be exported from here
+ IdEnv Unfolding, -- unfoldings to be exported from here
SpecialiseData) -- specialisation data
core2core core_todos module_name ppr_style us local_tycons tycon_specs binds
\begin{code}
calcInlinings :: Bool -- True => inlinings with _scc_s are OK
- -> IdEnv UnfoldingDetails
+ -> IdEnv Unfolding
-> [CoreBinding]
- -> IdEnv UnfoldingDetails
+ -> IdEnv Unfolding
calcInlinings scc_s_OK inline_env_so_far top_binds
= let
pp_item (binder, details)
= ppCat [ppr PprDebug binder, ppStr "=>", pp_det details]
where
- pp_det NoUnfoldingDetails = ppStr "_N_"
+ pp_det NoUnfolding = ppStr "_N_"
--LATER: pp_det (IWantToBeINLINEd _) = ppStr "INLINE"
- pp_det (GenForm _ expr guide)
+ pp_det (CoreUnfolding (SimpleUnfolding _ guide expr))
= ppAbove (ppr PprDebug guide) (ppr PprDebug expr)
pp_det other = ppStr "???"
| rhs_mentions_an_unmentionable
|| (not explicit_INLINE_requested
- && (rhs_looks_like_a_caf || guidance_says_don't || guidance_size_too_big))
+ && (rhs_looks_like_a_caf || guidance_size_too_big))
= let
my_my_trace
= if explicit_INLINE_requested
guidance_size
= case guidance of
UnfoldAlways -> 0 -- *extremely* small
- EssentialUnfolding -> 0 -- ditto
UnfoldIfGoodArgs _ _ _ size -> size
- guidance_says_don't = case guidance of { UnfoldNever -> True; _ -> False }
-
guidance_size_too_big
-- Does the guidance suggest that this unfolding will
-- be of no use *no matter* the arguments given to it?
-- Could be more sophisticated...
- = case guidance of
- UnfoldAlways -> False
- EssentialUnfolding -> False
- UnfoldIfGoodArgs _ no_val_args arg_info_vec size
-
- -> if explicit_creation_threshold then
- False -- user set threshold; don't second-guess...
-
- else if no_val_args == 0 && rhs_looks_like_a_data_val then
- False -- we'd like a top-level data constr to be
- -- visible even if it is never unfolded
- else
- let
- cost
- = leastItCouldCost con_discount_weight size no_val_args
- arg_info_vec rhs_arg_tys
- in
--- (if (unfold_use_threshold < cost) then (pprTrace "cost:" (ppInt cost)) else \x->x ) (
- unfold_use_threshold < cost
--- )
+ = not (couldBeSmallEnoughToInline con_discount_weight unfold_use_threshold guidance)
- rhs_looks_like_a_caf = not (manifestlyWHNF rhs)
+ rhs_looks_like_a_caf = not (whnfOrBottom rhs)
rhs_looks_like_a_data_val
= case (collectBinders rhs) of