import Data.IORef
import PrelNames
import UniqSupply
+import UniqFM
+import CoreFVs
+import Type
+import Coercion
\end{code}
%************************************************************************
%************************************************************************
\begin{code}
+
-- | Main entry point to the desugarer.
deSugar :: HscEnv -> ModLocation -> TcGblEnv -> IO (Messages, Maybe ModGuts)
-- Can modify PCS by faulting in more declarations
<- case target of
HscNothing ->
return (emptyMessages,
- Just ([], nilOL, [], [], NoStubs, hpcInfo, emptyModBreaks, undefined, undefined))
+ Just ([], nilOL, [], [], NoStubs, hpcInfo, emptyModBreaks, undefined, undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ , undefined
+ ))
_ -> do
(binds_cvr,ds_hpc_info, modBreaks)
<- if (opt_Hpc
; ds_vects <- mapM dsVect vects
; hetmet_brak <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_brak_name else return undefined
; hetmet_esc <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_esc_name else return undefined
+ ; hetmet_flatten <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_flatten_name else return undefined
+ ; hetmet_unflatten <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_unflatten_name else return undefined
+ ; hetmet_flattened_id <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_flattened_id_name else return undefined
+ ; hetmet_PGArrow <- if dopt Opt_F_coqpass dflags then dsLookupTyCon hetmet_PGArrow_name else return undefined
+ ; hetmet_PGArrow_unit <- if dopt Opt_F_coqpass dflags then dsLookupTyCon hetmet_PGArrow_unit_name else return undefined
+ ; hetmet_PGArrow_tensor <- if dopt Opt_F_coqpass dflags then dsLookupTyCon hetmet_PGArrow_tensor_name else return undefined
+ ; hetmet_PGArrow_exponent <- if dopt Opt_F_coqpass dflags then dsLookupTyCon hetmet_PGArrow_exponent_name else return undefined
+ ; hetmet_pga_id <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_id_name else return undefined
+ ; hetmet_pga_comp <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_comp_name else return undefined
+ ; hetmet_pga_first <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_first_name else return undefined
+ ; hetmet_pga_second <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_second_name else return undefined
+ ; hetmet_pga_cancell <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_cancell_name else return undefined
+ ; hetmet_pga_cancelr <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_cancelr_name else return undefined
+ ; hetmet_pga_uncancell <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_uncancell_name else return undefined
+ ; hetmet_pga_uncancelr <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_uncancelr_name else return undefined
+ ; hetmet_pga_assoc <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_assoc_name else return undefined
+ ; hetmet_pga_unassoc <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_unassoc_name else return undefined
+ ; hetmet_pga_copy <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_copy_name else return undefined
+ ; hetmet_pga_drop <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_drop_name else return undefined
+ ; hetmet_pga_swap <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_swap_name else return undefined
+ ; hetmet_pga_applyl <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_applyl_name else return undefined
+ ; hetmet_pga_applyr <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_applyr_name else return undefined
+ ; hetmet_pga_curryl <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_curryl_name else return undefined
+ ; hetmet_pga_curryr <- if dopt Opt_F_coqpass dflags then dsLookupGlobalId hetmet_pga_curryr_name else return undefined
; let hpc_init
| opt_Hpc = hpcInitCode mod ds_hpc_info
| otherwise = empty
, foreign_prs `appOL` core_prs `appOL` spec_prs
, spec_rules ++ ds_rules, ds_vects
, ds_fords `appendStubC` hpc_init
- , ds_hpc_info, modBreaks, hetmet_brak, hetmet_esc) }
+ , ds_hpc_info, modBreaks, hetmet_brak, hetmet_esc
+ , hetmet_flatten
+ , hetmet_unflatten
+ , hetmet_flattened_id
+ , hetmet_PGArrow
+ , hetmet_PGArrow_unit
+ , hetmet_PGArrow_tensor
+ , hetmet_PGArrow_exponent
+ , hetmet_pga_id
+ , hetmet_pga_comp
+ , hetmet_pga_first
+ , hetmet_pga_second
+ , hetmet_pga_cancell
+ , hetmet_pga_cancelr
+ , hetmet_pga_uncancell
+ , hetmet_pga_uncancelr
+ , hetmet_pga_assoc
+ , hetmet_pga_unassoc
+ , hetmet_pga_copy
+ , hetmet_pga_drop
+ , hetmet_pga_swap
+ , hetmet_pga_applyl
+ , hetmet_pga_applyr
+ , hetmet_pga_curryl
+ , hetmet_pga_curryr
+ ) }
; case mb_res of {
Nothing -> return (msgs, Nothing) ;
- Just (ds_ev_binds, all_prs, all_rules, ds_vects, ds_fords,ds_hpc_info, modBreaks, hetmet_brak, hetmet_esc) -> do
+ Just (ds_ev_binds, all_prs, all_rules, ds_vects, ds_fords,ds_hpc_info, modBreaks
+ , hetmet_brak, hetmet_esc
+ , hetmet_flatten
+ , hetmet_unflatten
+ , hetmet_flattened_id
+ , hetmet_PGArrow
+ , hetmet_PGArrow_unit
+ , hetmet_PGArrow_tensor
+ , hetmet_PGArrow_exponent
+ , hetmet_pga_id
+ , hetmet_pga_comp
+ , hetmet_pga_first
+ , hetmet_pga_second
+ , hetmet_pga_cancell
+ , hetmet_pga_cancelr
+ , hetmet_pga_uncancell
+ , hetmet_pga_uncancelr
+ , hetmet_pga_assoc
+ , hetmet_pga_unassoc
+ , hetmet_pga_copy
+ , hetmet_pga_drop
+ , hetmet_pga_swap
+ , hetmet_pga_applyl
+ , hetmet_pga_applyr
+ , hetmet_pga_curryl
+ , hetmet_pga_curryr) -> do
{ -- Add export flags to bindings
keep_alive <- readIORef keep_var
final_prs = addExportFlagsAndRules target
export_set keep_alive rules_for_locals (fromOL all_prs)
- final_pgm = combineEvBinds ds_ev_binds final_prs
+ final_pgm = simplifyBinds $ combineEvBinds ds_ev_binds final_prs
-- Notice that we put the whole lot in a big Rec, even the foreign binds
-- When compiling PrelFloat, which defines data Float = F# Float#
-- we want F# to be in scope in the foreign marshalling code!
(vcat [ pprCoreBindings final_pgm
, pprRules rules_for_imps ])
- ; (ds_binds, ds_rules_for_imps) <- simpleOptPgm dflags final_pgm rules_for_imps
+ ; ds_binds <- if dopt Opt_F_coqpass dflags
+ then do { us <- mkSplitUniqSupply '~'
+ ; let do_flatten = dopt Opt_F_flatten dflags
+ ; let do_skolemize = dopt Opt_F_skolemize dflags
+ ; return (coqPassCoreToCore
+ do_flatten
+ do_skolemize
+ hetmet_brak
+ hetmet_esc
+ hetmet_flatten
+ hetmet_unflatten
+ hetmet_flattened_id
+ us
+ final_pgm
+ hetmet_PGArrow
+ hetmet_PGArrow_unit
+ hetmet_PGArrow_tensor
+ hetmet_PGArrow_exponent
+ hetmet_pga_id
+ hetmet_pga_comp
+ hetmet_pga_first
+ hetmet_pga_second
+ hetmet_pga_cancell
+ hetmet_pga_cancelr
+ hetmet_pga_uncancell
+ hetmet_pga_uncancelr
+ hetmet_pga_assoc
+ hetmet_pga_unassoc
+ hetmet_pga_copy
+ hetmet_pga_drop
+ hetmet_pga_swap
+ hetmet_pga_applyl
+ hetmet_pga_applyr
+ hetmet_pga_curryl
+ hetmet_pga_curryr)
+ }
+ else return final_pgm
+
+ ; (ds_binds', ds_rules_for_imps) <- simpleOptPgm dflags ds_binds rules_for_imps
-- The simpleOptPgm gets rid of type
-- bindings plus any stupid dead code
- ; dumpIfSet_dyn dflags Opt_D_coqpass "Coq Pass Output" $ text $ coqPassCoreToString ds_binds
+ ; dumpIfSet_dyn dflags Opt_D_dump_proofs "Coq Pass Output" $ text $ coqPassCoreToString ds_binds'
- ; ds_binds' <- if dopt Opt_F_coqpass dflags
- then do { us <- mkSplitUniqSupply '~'
- ; return $ coqPassCoreToCore hetmet_brak hetmet_esc us ds_binds
- }
- else return ds_binds
-
- ; dumpIfSet_dyn dflags Opt_D_dump_coqpass "After Coq Pass" (text $ showSDoc $ pprCoreBindings ds_binds')
+ ; dumpIfSet_dyn dflags Opt_D_coqpass "After Coq Pass" (text $ showSDoc $ pprCoreBindings ds_binds')
; endPass dflags CoreDesugar ds_binds' ds_rules_for_imps
-- ; return $ Vect v (Just rhs')
-- }
\end{code}
+
+
+
+\begin{code}
+--
+-- Simplification routines run before the flattener. We can't use
+-- simpleOptPgm -- it doesn't preserve the order of subexpressions or
+-- let-binding groups.
+--
+simplify :: Expr CoreBndr -> Expr CoreBndr
+simplify (Var v) = Var v
+simplify (App e1 e2) = App (simplify e1) (simplify e2)
+simplify (Lit lit) = Lit lit
+simplify (Note note e) = Note note (simplify e)
+simplify (Cast e co) = if tcEqType (fst $ coercionKind co) (snd $ coercionKind co)
+ then simplify e
+ else Cast (simplify e) co
+simplify (Lam v e) = Lam v (simplify e)
+simplify (Type t) = Type t
+simplify (Case e b ty as) = Case (simplify e) b ty (map (\(a,b,e) -> (a,b,simplify e)) as)
+simplify (Let bind body) = foldr Let (simplify body) (simplifyBind bind)
+
+simplifyBind :: Bind CoreBndr -> [Bind CoreBndr]
+simplifyBind (NonRec b e) = [NonRec b (simplify e)]
+simplifyBind (Rec []) = []
+simplifyBind (Rec (rbs@((b,e):rbs'))) =
+ if or $ map (\x -> elemUFM x (exprFreeIds e)) (map fst rbs)
+ then [Rec (map (\(v,e) -> (v,simplify e)) rbs)]
+ else (NonRec b (simplify e)):(simplifyBind $ Rec rbs')
+
+simplifyBinds = concatMap simplifyBind
+\end{code}
\ No newline at end of file
projects / ghc-hetmet.git / blobdiff