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Commit 38945d67 authored by sewardj's avatar sewardj
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[project @ 2000-10-26 10:23:37 by sewardj] 

So Simon can proceed with driver hacks.
parent 6e42e208
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ghc/compiler/main/HscMain.lhs
View file @ 38945d67
......@@ -8,8 +8,10 @@ module HscMain ( hscMain ) where
#include "HsVersions.h"
import Maybe ( isJust )
import Monad ( when )
import IO ( hPutStr, hClose, stderr, openFile, IOMode(..) )
import IO ( hPutStr, hPutStrLn, hClose, stderr,
openFile, IOMode(..) )
import HsSyn
import RdrHsSyn ( RdrNameHsModule )
......@@ -19,12 +21,17 @@ import Parser ( parse )
import Lex ( PState(..), ParseResult(..) )
import SrcLoc ( mkSrcLoc )
import Rename ( renameModule, checkOldIface )
import Rename ( renameModule, checkOldIface, closeIfaceDecls )
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThings )
import PrelNames ( knownKeyNames )
import PrelRules ( builtinRules )
import MkIface ( completeIface, mkModDetailsFromIface )
import MkIface ( completeIface, mkModDetailsFromIface, mkModDetails,
writeIface )
import TcModule ( TcResults(..), typecheckModule )
import TcEnv ( tcEnvTyCons, tcEnvClasses )
import InstEnv ( emptyInstEnv )
import Desugar ( deSugar )
import SimplCore ( core2core )
import OccurAnal ( occurAnalyseBinds )
......@@ -37,9 +44,9 @@ import CodeGen ( codeGen )
import CodeOutput ( codeOutput )
import Module ( ModuleName, moduleNameUserString,
moduleUserString, moduleName )
moduleUserString, moduleName, emptyModuleEnv )
import CmdLineOpts
import ErrUtils ( ghcExit, doIfSet, dumpIfSet )
import ErrUtils ( ghcExit, doIfSet, dumpIfSet_dyn )
import UniqSupply ( mkSplitUniqSupply )
import Bag ( emptyBag )
......@@ -51,14 +58,18 @@ import HscTypes ( ModDetails, ModIface, PersistentCompilerState(..),
PersistentRenamerState(..), WhatsImported(..),
HomeSymbolTable, PackageSymbolTable, ImportVersion,
GenAvailInfo(..), RdrAvailInfo, OrigNameEnv(..),
PackageRuleBase )
PackageRuleBase, HomeIfaceTable, PackageIfaceTable,
extendTypeEnv )
import RnMonad ( ExportItem, ParsedIface(..) )
import CmSummarise ( ModSummary )
import CmSummarise ( ModSummary(..), name_of_summary, ms_get_imports )
import Finder ( Finder )
import InterpSyn ( UnlinkedIBind )
import StgInterp ( ItblEnv )
import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM )
import OccName ( OccName, pprOccName )
import Name ( Name, nameModule )
import Name ( Name, nameModule, emptyNameEnv, nameOccName,
getName, extendNameEnv_C )
import VarEnv ( emptyVarEnv )
\end{code}
......@@ -82,54 +93,61 @@ data HscResult
-- (parse/rename/typecheck) print messages themselves
hscMain
:: DynFlags
:: DynFlags
-> Finder
-> ModSummary -- summary, including source filename
-> Maybe ModIface -- old interface, if available
-> String -- file in which to put the output (.s, .hc, .java etc.)
-> [CoreToDo]
-> [StgToDo]
-> HomeSymbolTable -- for home module ModDetails
-> HomeIfaceTable
-> PackageIfaceTable
-> PersistentCompilerState -- IN: persistent compiler state
-> IO HscResult
hscMain dflags core_cmds stg_cmds summary maybe_old_iface
output_filename mod_details pcs
hscMain dflags finder summary maybe_old_iface output_filename
core_cmds stg_cmds hst hit pit pcs
= do {
-- ????? source_unchanged :: Bool -- extracted from summary?
(ch_pcs, check_errs, (recomp_reqd, maybe_checked_iface))
<- checkOldIface dflags finder hit hst pcs mod source_unchanged
maybe_old_iface;
let source_unchanged = trace "WARNING: source_unchanged?!" False
;
(pcs_ch, check_errs, (recomp_reqd, maybe_checked_iface))
<- checkOldIface dflags finder hit hst pcs (ms_mod summary)
source_unchanged maybe_old_iface;
if check_errs then
return (HscFail ch_pcs)
return (HscFail pcs_ch)
else do {
let no_old_iface = not (isJust maybe_checked_iface)
what_next | recomp_reqd || no_old_iface = hscRecomp
| otherwise = hscNoRecomp
;
return (what_next dflags finder core_cmds stg_cmds summary hit hst
pcs2 maybe_checked_iface)
what_next dflags finder summary maybe_checked_iface output_filename
core_cmds stg_cmds hst hit pit pcs_ch
}}
hscNoRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
hscNoRecomp dflags finder summary maybe_checked_iface output_filename
core_cmds stg_cmds hst hit pit pcs_ch
= do {
-- we definitely expect to have the old interface available
let old_iface = case maybe_old_iface of
let old_iface = case maybe_checked_iface of
Just old_if -> old_if
Nothing -> panic "hscNoRecomp:old_iface"
;
-- CLOSURE
(pcs_cl, closure_errs, cl_hs_decls)
<- closeIfaceDecls dflags finder hit hst pcs old_iface ;
<- closeIfaceDecls dflags finder hit hst pcs_ch old_iface ;
if closure_errs then
return (HscFail cl_pcs)
return (HscFail pcs_cl)
else do {
-- TYPECHECK
maybe_tc_result
<- typecheckModule dflags mod pcs_cl hst hit pit cl_hs_decls;
<- typecheckModule dflags (ms_mod summary) pcs_cl hst hit cl_hs_decls;
case maybe_tc_result of {
Nothing -> return (HscFail cl_pcs);
Nothing -> return (HscFail pcs_cl);
Just tc_result -> do {
let pcs_tc = tc_pcs tc_result
......@@ -141,7 +159,7 @@ hscNoRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
-- create a new details from the closed, typechecked, old iface
let new_details = mkModDetailsFromIface env_tc local_insts local_rules
;
return (HscOK final_details
return (HscOK new_details
Nothing -- tells CM to use old iface and linkables
Nothing Nothing -- foreign export stuff
Nothing -- ibinds
......@@ -149,27 +167,31 @@ hscNoRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
}}}}
hscRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
hscRecomp dflags finder summary maybe_checked_iface output_filename
core_cmds stg_cmds hst hit pit pcs_ch
= do {
-- what target are we shooting for?
let toInterp = dopt_HscLang dflags == HscInterpreted
this_mod = ms_mod summary
;
-- PARSE
maybe_parsed <- myParseModule dflags summary;
case maybe_parsed of {
Nothing -> return (HscFail pcs);
Nothing -> return (HscFail pcs_ch);
Just rdr_module -> do {
-- RENAME
show_pass dflags "Renamer";
(pcs_rn, maybe_rn_result)
<- renameModule dflags finder hit hst pcs mod rdr_module;
<- renameModule dflags finder hit hst pcs_ch this_mod rdr_module;
case maybe_rn_result of {
Nothing -> return (HscFail pcs_rn);
Just (new_iface, rn_hs_decls) -> do {
-- TYPECHECK
show_pass dflags "Typechecker";
maybe_tc_result
<- typecheckModule dflags mod pcs_rn hst hit pit rn_hs_decls;
<- typecheckModule dflags this_mod pcs_rn hst hit rn_hs_decls;
case maybe_tc_result of {
Nothing -> return (HscFail pcs_rn);
Just tc_result -> do {
......@@ -182,18 +204,19 @@ hscRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
-- DESUGAR, SIMPLIFY, TIDY-CORE
-- We grab the the unfoldings at this point.
(tidy_binds, orphan_rules, foreign_stuff)
<- dsThenSimplThenTidy dflags mod tc_result ds_uniqs
<- dsThenSimplThenTidy dflags this_mod tc_result core_cmds
;
-- CONVERT TO STG
(stg_binds, cost_centre_info, top_level_ids)
<- myCoreToStg finder c2s_uniqs st_uniqs this_mod tidy_binds
(stg_binds, oa_tidy_binds, cost_centre_info, top_level_ids)
<- myCoreToStg dflags this_mod tidy_binds stg_cmds
;
-- cook up a new ModDetails now we (finally) have all the bits
let new_details = mkModDetails tc_env local_insts tidy_binds
let new_details = mkModDetails env_tc local_insts tidy_binds
top_level_ids orphan_rules
;
-- and possibly create a new ModIface
let maybe_final_iface = completeIface maybe_old_iface new_iface new_details
let maybe_final_iface
= completeIface maybe_checked_iface new_iface new_details
;
-- Write the interface file
......@@ -202,9 +225,8 @@ hscRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
-- do the rest of code generation/emission
(maybe_ibinds, maybe_stub_h_filename, maybe_stub_c_filename)
<- restOfCodeGeneration toInterp
this_mod imported_modules cost_centre_info
fe_binders tc_env stg_binds
<- restOfCodeGeneration dflags toInterp summary
cost_centre_info foreign_stuff tc_env stg_binds oa_tidy_binds
;
-- and the answer is ...
return (HscOK new_details maybe_final_iface
......@@ -214,8 +236,8 @@ hscRecomp dflags finder core_cmds stg_cmds summary hit hst pcs maybe_old_iface
myParseModule dflags summary
= do -------------------------- Reader ----------------
show_pass "Parser"
= do -------------------------- Parser ----------------
show_pass dflags "Parser"
-- _scc_ "Parser"
let src_filename -- name of the preprocessed source file
......@@ -232,52 +254,57 @@ myParseModule dflags summary
case parse buf PState{ bol = 0#, atbol = 1#,
context = [], glasgow_exts = glaexts,
loc = mkSrcLoc src_filename 1 } of {
loc = mkSrcLoc (_PK_ src_filename) 1 } of {
PFailed err -> do { hPutStrLn stderr (showSDoc err);
return Nothing };
POk _ rdr_module@(HsModule mod_name _ _ _ _ _ _) ->
POk _ rdr_module@(HsModule mod_name _ _ _ _ _ _) -> do {
dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module)
dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module) ;
dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics"
(ppSourceStats False rdr_module)
(ppSourceStats False rdr_module) ;
return (Just rdr_module)
}
}}
restOfCodeGeneration toInterp this_mod imported_modules cost_centre_info
foreign_stuff tc_env stg_binds
restOfCodeGeneration dflags toInterp summary cost_centre_info
foreign_stuff tc_env stg_binds oa_tidy_binds
| toInterp
= return (Nothing, Nothing,
Just (stgToInterpSyn stg_binds local_tycons local_classes))
| otherwise
= do -------------------------- Code generation -------------------------------
show_pass "CodeGen"
show_pass dflags "CodeGen"
-- _scc_ "CodeGen"
abstractC <- codeGen this_mod imported_modules
cost_centre_info fe_binders
local_tycons local_classes stg_binds
-------------------------- Code output -------------------------------
show_pass "CodeOutput"
show_pass dflags "CodeOutput"
-- _scc_ "CodeOutput"
let (fe_binders, h_code, c_code) = foreign_stuff
ncg_uniqs <- mkSplitUniqSupply 'n'
(maybe_stub_h_name, maybe_stub_c_name)
<- codeOutput this_mod local_tycons local_classes
occ_anal_tidy_binds stg_binds2
oa_tidy_binds stg_binds
c_code h_code abstractC ncg_uniqs
return (maybe_stub_h_name, maybe_stub_c_name, Nothing)
where
local_tycons = tcEnvTyCons tc_env
local_classes = tcEnvClasses tc_env
local_tycons = tcEnvTyCons tc_env
local_classes = tcEnvClasses tc_env
this_mod = ms_mod summary
imported_modules = ms_get_imports summary
(fe_binders,h_code,c_code) = foreign_stuff
dsThenSimplThenTidy dflags mod tc_result
dsThenSimplThenTidy dflags this_mod tc_result core_cmds
-- make up ds_uniqs here
= do -------------------------- Desugaring ----------------
-- _scc_ "DeSugar"
ds_uniqs <- mkSplitUniqSupply 'd'
(desugared, rules, h_code, c_code, fe_binders)
<- deSugar this_mod ds_uniqs tc_result
......@@ -292,24 +319,33 @@ dsThenSimplThenTidy dflags mod tc_result
return (tidy_binds, tidy_orphan_rules, (fe_binders,h_code,c_code))
myCoreToStg c2s_uniqs st_uniqs this_mod tidy_binds
= do let occ_anal_tidy_binds = occurAnalyseBinds tidy_binds
myCoreToStg dflags this_mod tidy_binds stg_cmds
= do
c2s_uniqs <- mkSplitUniqSupply 'c'
st_uniqs <- mkSplitUniqSupply 'g'
let occ_anal_tidy_binds = occurAnalyseBinds tidy_binds
() <- coreBindsSize occ_anal_tidy_binds `seq` return ()
-- TEMP: the above call zaps some space usage allocated by the
-- simplifier, which for reasons I don't understand, persists
-- thoroughout code generation
show_pass "Core2Stg"
show_pass dflags "Core2Stg"
-- _scc_ "Core2Stg"
let stg_binds = topCoreBindsToStg c2s_uniqs occ_anal_tidy_binds
show_pass "Stg2Stg"
show_pass dflags "Stg2Stg"
-- _scc_ "Stg2Stg"
(stg_binds2, cost_centre_info) <- stg2stg stg_cmds this_mod st_uniqs stg_binds
let final_ids = collectFinalStgBinders (map fst stg_binds2)
return (stg_binds2, cost_centre_info, final_ids)
return (stg_binds2, occ_anal_tidy_binds, cost_centre_info, final_ids)
show_pass dflags what
= if dopt Opt_D_show_passes dflags
then hPutStr stderr ("*** "++what++":\n")
else return ()
\end{code}
......@@ -326,7 +362,7 @@ initPersistentCompilerState
return (
PCS { pcs_PST = initPackageDetails,
pcs_insts = emptyInstEnv,
pcs_rules = emptyRuleEnv,
pcs_rules = emptyRuleBase,
pcs_PRS = prs
}
)
......@@ -356,6 +392,7 @@ initOrigNames = grab knownKeyNames `plusFM` grab (map getName wiredInThings)
initRules :: PackageRuleBase
initRules = foldl add emptyVarEnv builtinRules
where
add env (name,rule) = extendNameEnv_C add1 env name [rule]
add1 rules _ = rule : rules
add env (name,rule)
= extendNameEnv_C (\rules _ -> rule:rules)
env name [rule]
\end{code}
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