-- (c) The University of Glasgow, 2004-2006
--
-- Parser for concrete Cmm.
+-- This doesn't just parse the Cmm file, we also do some code generation
+-- along the way for switches and foreign calls etc.
--
-----------------------------------------------------------------------------
+-- TODO: Add support for interruptible/uninterruptible foreign call specification
+
{
-{-# OPTIONS -w #-}
+{-# OPTIONS -Wwarn -w -XNoMonomorphismRestriction #-}
+-- The NoMonomorphismRestriction deals with a Happy infelicity
+-- With OutsideIn's more conservativ monomorphism restriction
+-- we aren't generalising
+-- notHappyAtAll = error "urk"
+-- which is terrible. Switching off the restriction allows
+-- the generalisation. Better would be to make Happy generate
+-- an appropriate signature.
+--
-- The above warning supression flag is a temporary kludge.
-- While working on this module you are encouraged to remove it and fix
-- any warnings in the module. See
module CmmParse ( parseCmmFile ) where
-import CgMonad
+import CgMonad hiding (getDynFlags)
+import CgExtCode
import CgHeapery
import CgUtils
import CgProf
import CmmUtils
import CmmLex
import CLabel
-import MachOp
import SMRep
import Lexer
import ForeignCall
+import Module
import Literal
import Unique
import UniqFM
import Panic
import Constants
import Outputable
+import BasicTypes
+import Bag ( emptyBag, unitBag )
+import Var
import Control.Monad
import Data.Array
#include "HsVersions.h"
}
+%expect 0
+
%token
':' { L _ (CmmT_SpecChar ':') }
';' { L _ (CmmT_SpecChar ';') }
'bits64' { L _ (CmmT_bits64) }
'float32' { L _ (CmmT_float32) }
'float64' { L _ (CmmT_float64) }
+ 'gcptr' { L _ (CmmT_gcptr) }
GLOBALREG { L _ (CmmT_GlobalReg $$) }
NAME { L _ (CmmT_Name $$) }
| cmmdata { $1 }
| decl { $1 }
| 'CLOSURE' '(' NAME ',' NAME lits ')' ';'
- { do lits <- sequence $6;
- staticClosure $3 $5 (map getLit lits) }
+ {% withThisPackage $ \pkg ->
+ do lits <- sequence $6;
+ staticClosure pkg $3 $5 (map getLit lits) }
-- The only static closures in the RTS are dummy closures like
-- stg_END_TSO_QUEUE_closure and stg_dummy_ret. We don't need
-- Strings aren't used much in the RTS HC code, so it doesn't seem
-- worth allowing inline strings. C-- doesn't allow them anyway.
static :: { ExtFCode [CmmStatic] }
- : NAME ':' { return [CmmDataLabel (mkRtsDataLabelFS $1)] }
+ : NAME ':'
+ {% withThisPackage $ \pkg ->
+ return [CmmDataLabel (mkCmmDataLabel pkg $1)] }
+
| type expr ';' { do e <- $2;
return [CmmStaticLit (getLit e)] }
| type ';' { return [CmmUninitialised
- (machRepByteWidth $1)] }
+ (widthInBytes (typeWidth $1))] }
| 'bits8' '[' ']' STRING ';' { return [mkString $4] }
| 'bits8' '[' INT ']' ';' { return [CmmUninitialised
(fromIntegral $3)] }
| typenot8 '[' INT ']' ';' { return [CmmUninitialised
- (machRepByteWidth $1 *
+ (widthInBytes (typeWidth $1) *
fromIntegral $3)] }
| 'align' INT ';' { return [CmmAlign (fromIntegral $2)] }
| 'CLOSURE' '(' NAME lits ')'
{ do lits <- sequence $4;
return $ map CmmStaticLit $
- mkStaticClosure (mkForeignLabel $3 Nothing True)
+ mkStaticClosure (mkForeignLabel $3 Nothing ForeignLabelInExternalPackage IsData)
-- mkForeignLabel because these are only used
-- for CHARLIKE and INTLIKE closures in the RTS.
dontCareCCS (map getLit lits) [] [] [] }
cmmproc :: { ExtCode }
-- TODO: add real SRT/info tables to parsed Cmm
- : info maybe_formals_without_kinds maybe_gc_block maybe_frame '{' body '}'
+ : info maybe_formals_without_hints maybe_gc_block maybe_frame '{' body '}'
{ do ((entry_ret_label, info, live, formals, gc_block, frame), stmts) <-
getCgStmtsEC' $ loopDecls $ do {
(entry_ret_label, info, live) <- $1;
blks <- code (cgStmtsToBlocks stmts)
code (emitInfoTableAndCode entry_ret_label (CmmInfo gc_block frame info) formals blks) }
- | info maybe_formals_without_kinds ';'
+ | info maybe_formals_without_hints ';'
{ do (entry_ret_label, info, live) <- $1;
formals <- sequence $2;
code (emitInfoTableAndCode entry_ret_label (CmmInfo Nothing Nothing info) formals []) }
- | NAME maybe_formals_without_kinds maybe_gc_block maybe_frame '{' body '}'
- { do ((formals, gc_block, frame), stmts) <-
- getCgStmtsEC' $ loopDecls $ do {
- formals <- sequence $2;
- gc_block <- $3;
- frame <- $4;
- $6;
- return (formals, gc_block, frame) }
- blks <- code (cgStmtsToBlocks stmts)
- code (emitProc (CmmInfo gc_block frame CmmNonInfoTable) (mkRtsCodeLabelFS $1) formals blks) }
+ | NAME maybe_formals_without_hints maybe_gc_block maybe_frame '{' body '}'
+ {% withThisPackage $ \pkg ->
+ do newFunctionName $1 pkg
+ ((formals, gc_block, frame), stmts) <-
+ getCgStmtsEC' $ loopDecls $ do {
+ formals <- sequence $2;
+ gc_block <- $3;
+ frame <- $4;
+ $6;
+ return (formals, gc_block, frame) }
+ blks <- code (cgStmtsToBlocks stmts)
+ code (emitProc (CmmInfo gc_block frame CmmNonInfoTable) (mkCmmCodeLabel pkg $1) formals blks) }
info :: { ExtFCode (CLabel, CmmInfoTable, [Maybe LocalReg]) }
: 'INFO_TABLE' '(' NAME ',' INT ',' INT ',' INT ',' STRING ',' STRING ')'
-- ptrs, nptrs, closure type, description, type
- { do prof <- profilingInfo $11 $13
- return (mkRtsEntryLabelFS $3,
- CmmInfoTable prof (fromIntegral $9)
+ {% withThisPackage $ \pkg ->
+ do prof <- profilingInfo $11 $13
+ return (mkCmmEntryLabel pkg $3,
+ CmmInfoTable False prof (fromIntegral $9)
(ThunkInfo (fromIntegral $5, fromIntegral $7) NoC_SRT),
[]) }
| 'INFO_TABLE_FUN' '(' NAME ',' INT ',' INT ',' INT ',' STRING ',' STRING ',' INT ')'
-- ptrs, nptrs, closure type, description, type, fun type
- { do prof <- profilingInfo $11 $13
- return (mkRtsEntryLabelFS $3,
- CmmInfoTable prof (fromIntegral $9)
- (FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT (fromIntegral $15) 0
- (ArgSpec 0)
+ {% withThisPackage $ \pkg ->
+ do prof <- profilingInfo $11 $13
+ return (mkCmmEntryLabel pkg $3,
+ CmmInfoTable False prof (fromIntegral $9)
+ (FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT
+ 0 -- Arity zero
+ (ArgSpec (fromIntegral $15))
zeroCLit),
[]) }
-- we leave most of the fields zero here. This is only used
-- A variant with a non-zero arity (needed to write Main_main in Cmm)
| 'INFO_TABLE_FUN' '(' NAME ',' INT ',' INT ',' INT ',' STRING ',' STRING ',' INT ',' INT ')'
-- ptrs, nptrs, closure type, description, type, fun type, arity
- { do prof <- profilingInfo $11 $13
- return (mkRtsEntryLabelFS $3,
- CmmInfoTable prof (fromIntegral $9)
- (FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT (fromIntegral $15) (fromIntegral $17)
- (ArgSpec 0)
+ {% withThisPackage $ \pkg ->
+ do prof <- profilingInfo $11 $13
+ return (mkCmmEntryLabel pkg $3,
+ CmmInfoTable False prof (fromIntegral $9)
+ (FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT (fromIntegral $17)
+ (ArgSpec (fromIntegral $15))
zeroCLit),
[]) }
-- we leave most of the fields zero here. This is only used
| 'INFO_TABLE_CONSTR' '(' NAME ',' INT ',' INT ',' INT ',' INT ',' STRING ',' STRING ')'
-- ptrs, nptrs, tag, closure type, description, type
- { do prof <- profilingInfo $13 $15
+ {% withThisPackage $ \pkg ->
+ do prof <- profilingInfo $13 $15
-- If profiling is on, this string gets duplicated,
-- but that's the way the old code did it we can fix it some other time.
- desc_lit <- code $ mkStringCLit $13
- return (mkRtsEntryLabelFS $3,
- CmmInfoTable prof (fromIntegral $11)
+ desc_lit <- code $ mkStringCLit $13
+ return (mkCmmEntryLabel pkg $3,
+ CmmInfoTable False prof (fromIntegral $11)
(ConstrInfo (fromIntegral $5, fromIntegral $7) (fromIntegral $9) desc_lit),
[]) }
| 'INFO_TABLE_SELECTOR' '(' NAME ',' INT ',' INT ',' STRING ',' STRING ')'
-- selector, closure type, description, type
- { do prof <- profilingInfo $9 $11
- return (mkRtsEntryLabelFS $3,
- CmmInfoTable prof (fromIntegral $7)
+ {% withThisPackage $ \pkg ->
+ do prof <- profilingInfo $9 $11
+ return (mkCmmEntryLabel pkg $3,
+ CmmInfoTable False prof (fromIntegral $7)
(ThunkSelectorInfo (fromIntegral $5) NoC_SRT),
[]) }
| 'INFO_TABLE_RET' '(' NAME ',' INT ')'
-- closure type (no live regs)
- { do let infoLabel = mkRtsInfoLabelFS $3
- return (mkRtsRetLabelFS $3,
- CmmInfoTable (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
+ {% withThisPackage $ \pkg ->
+ do let infoLabel = mkCmmInfoLabel pkg $3
+ return (mkCmmRetLabel pkg $3,
+ CmmInfoTable False (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
(ContInfo [] NoC_SRT),
[]) }
- | 'INFO_TABLE_RET' '(' NAME ',' INT ',' formals_without_kinds0 ')'
+ | 'INFO_TABLE_RET' '(' NAME ',' INT ',' formals_without_hints0 ')'
-- closure type, live regs
- { do live <- sequence (map (liftM Just) $7)
- return (mkRtsRetLabelFS $3,
- CmmInfoTable (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
+ {% withThisPackage $ \pkg ->
+ do live <- sequence (map (liftM Just) $7)
+ return (mkCmmRetLabel pkg $3,
+ CmmInfoTable False (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
(ContInfo live NoC_SRT),
live) }
| stmt body { do $1; $2 }
decl :: { ExtCode }
- : type names ';' { mapM_ (newLocal defaultKind $1) $2 }
- | STRING type names ';' {% do k <- parseGCKind $1;
- return $ mapM_ (newLocal k $2) $3 }
-
- | 'import' names ';' { mapM_ newImport $2 }
+ : type names ';' { mapM_ (newLocal $1) $2 }
+ | 'import' importNames ';' { mapM_ newImport $2 }
| 'export' names ';' { return () } -- ignore exports
+
+-- an imported function name, with optional packageId
+importNames
+ :: { [(FastString, CLabel)] }
+ : importName { [$1] }
+ | importName ',' importNames { $1 : $3 }
+
+importName
+ :: { (FastString, CLabel) }
+
+ -- A label imported without an explicit packageId.
+ -- These are taken to come frome some foreign, unnamed package.
+ : NAME
+ { ($1, mkForeignLabel $1 Nothing ForeignLabelInExternalPackage IsFunction) }
+
+ -- A label imported with an explicit packageId.
+ | STRING NAME
+ { ($2, mkCmmCodeLabel (fsToPackageId (mkFastString $1)) $2) }
+
+
names :: { [FastString] }
- : NAME { [$1] }
- | NAME ',' names { $1 : $3 }
+ : NAME { [$1] }
+ | NAME ',' names { $1 : $3 }
stmt :: { ExtCode }
: ';' { nopEC }
-- we tweak the syntax to avoid the conflict. The later
-- option is taken here because the other way would require
-- multiple levels of expanding and get unwieldy.
- | maybe_results 'foreign' STRING expr '(' cmm_kind_exprs0 ')' safety vols opt_never_returns ';'
+ | maybe_results 'foreign' STRING expr '(' cmm_hint_exprs0 ')' safety vols opt_never_returns ';'
{% foreignCall $3 $1 $4 $6 $9 $8 $10 }
- | maybe_results 'prim' '%' NAME '(' cmm_kind_exprs0 ')' safety vols ';'
+ | maybe_results 'prim' '%' NAME '(' cmm_hint_exprs0 ')' safety vols ';'
{% primCall $1 $4 $6 $9 $8 }
-- stmt-level macros, stealing syntax from ordinary C-- function calls.
-- Perhaps we ought to use the %%-form?
| expr0 { $1 }
expr0 :: { ExtFCode CmmExpr }
- : INT maybe_ty { return (CmmLit (CmmInt $1 $2)) }
- | FLOAT maybe_ty { return (CmmLit (CmmFloat $1 $2)) }
+ : INT maybe_ty { return (CmmLit (CmmInt $1 (typeWidth $2))) }
+ | FLOAT maybe_ty { return (CmmLit (CmmFloat $1 (typeWidth $2))) }
| STRING { do s <- code (mkStringCLit $1);
return (CmmLit s) }
| reg { $1 }
-- leaving out the type of a literal gives you the native word size in C--
-maybe_ty :: { MachRep }
- : {- empty -} { wordRep }
+maybe_ty :: { CmmType }
+ : {- empty -} { bWord }
| '::' type { $2 }
-maybe_actuals :: { [ExtFCode CmmActual] }
+maybe_actuals :: { [ExtFCode HintedCmmActual] }
: {- empty -} { [] }
- | '(' cmm_kind_exprs0 ')' { $2 }
+ | '(' cmm_hint_exprs0 ')' { $2 }
-cmm_kind_exprs0 :: { [ExtFCode CmmActual] }
+cmm_hint_exprs0 :: { [ExtFCode HintedCmmActual] }
: {- empty -} { [] }
- | cmm_kind_exprs { $1 }
+ | cmm_hint_exprs { $1 }
-cmm_kind_exprs :: { [ExtFCode CmmActual] }
- : cmm_kind_expr { [$1] }
- | cmm_kind_expr ',' cmm_kind_exprs { $1 : $3 }
+cmm_hint_exprs :: { [ExtFCode HintedCmmActual] }
+ : cmm_hint_expr { [$1] }
+ | cmm_hint_expr ',' cmm_hint_exprs { $1 : $3 }
-cmm_kind_expr :: { ExtFCode CmmActual }
- : expr { do e <- $1; return (CmmKinded e (inferCmmKind e)) }
- | expr STRING {% do h <- parseCmmKind $2;
+cmm_hint_expr :: { ExtFCode HintedCmmActual }
+ : expr { do e <- $1; return (CmmHinted e (inferCmmHint e)) }
+ | expr STRING {% do h <- parseCmmHint $2;
return $ do
- e <- $1; return (CmmKinded e h) }
+ e <- $1; return (CmmHinted e h) }
exprs0 :: { [ExtFCode CmmExpr] }
: {- empty -} { [] }
: NAME { lookupName $1 }
| GLOBALREG { return (CmmReg (CmmGlobal $1)) }
-maybe_results :: { [ExtFCode CmmFormal] }
+maybe_results :: { [ExtFCode HintedCmmFormal] }
: {- empty -} { [] }
| '(' cmm_formals ')' '=' { $2 }
-cmm_formals :: { [ExtFCode CmmFormal] }
+cmm_formals :: { [ExtFCode HintedCmmFormal] }
: cmm_formal { [$1] }
| cmm_formal ',' { [$1] }
| cmm_formal ',' cmm_formals { $1 : $3 }
-cmm_formal :: { ExtFCode CmmFormal }
- : local_lreg { do e <- $1; return (CmmKinded e (inferCmmKind (CmmReg (CmmLocal e)))) }
- | STRING local_lreg {% do h <- parseCmmKind $1;
+cmm_formal :: { ExtFCode HintedCmmFormal }
+ : local_lreg { do e <- $1; return (CmmHinted e (inferCmmHint (CmmReg (CmmLocal e)))) }
+ | STRING local_lreg {% do h <- parseCmmHint $1;
return $ do
- e <- $2; return (CmmKinded e h) }
+ e <- $2; return (CmmHinted e h) }
local_lreg :: { ExtFCode LocalReg }
: NAME { do e <- lookupName $1;
other -> pprPanic "CmmParse:" (ftext $1 <> text " not a register") }
| GLOBALREG { return (CmmGlobal $1) }
-maybe_formals_without_kinds :: { [ExtFCode LocalReg] }
+maybe_formals_without_hints :: { [ExtFCode LocalReg] }
: {- empty -} { [] }
- | '(' formals_without_kinds0 ')' { $2 }
+ | '(' formals_without_hints0 ')' { $2 }
-formals_without_kinds0 :: { [ExtFCode LocalReg] }
+formals_without_hints0 :: { [ExtFCode LocalReg] }
: {- empty -} { [] }
- | formals_without_kinds { $1 }
+ | formals_without_hints { $1 }
-formals_without_kinds :: { [ExtFCode LocalReg] }
- : formal_without_kind ',' { [$1] }
- | formal_without_kind { [$1] }
- | formal_without_kind ',' formals_without_kinds { $1 : $3 }
+formals_without_hints :: { [ExtFCode LocalReg] }
+ : formal_without_hint ',' { [$1] }
+ | formal_without_hint { [$1] }
+ | formal_without_hint ',' formals_without_hints { $1 : $3 }
-formal_without_kind :: { ExtFCode LocalReg }
- : type NAME { newLocal defaultKind $1 $2 }
- | STRING type NAME {% do k <- parseGCKind $1;
- return $ newLocal k $2 $3 }
+formal_without_hint :: { ExtFCode LocalReg }
+ : type NAME { newLocal $1 $2 }
maybe_frame :: { ExtFCode (Maybe UpdateFrame) }
: {- empty -} { return Nothing }
| 'goto' NAME
{ do l <- lookupLabel $2; return (Just l) }
-type :: { MachRep }
- : 'bits8' { I8 }
+type :: { CmmType }
+ : 'bits8' { b8 }
| typenot8 { $1 }
-typenot8 :: { MachRep }
- : 'bits16' { I16 }
- | 'bits32' { I32 }
- | 'bits64' { I64 }
- | 'float32' { F32 }
- | 'float64' { F64 }
+typenot8 :: { CmmType }
+ : 'bits16' { b16 }
+ | 'bits32' { b32 }
+ | 'bits64' { b64 }
+ | 'float32' { f32 }
+ | 'float64' { f64 }
+ | 'gcptr' { gcWord }
{
section :: String -> Section
section "text" = Text
-- argument. We assume that this is correct: for MachOps that don't have
-- symmetrical args (e.g. shift ops), the first arg determines the type of
-- the op.
-mkMachOp :: (MachRep -> MachOp) -> [ExtFCode CmmExpr] -> ExtFCode CmmExpr
+mkMachOp :: (Width -> MachOp) -> [ExtFCode CmmExpr] -> ExtFCode CmmExpr
mkMachOp fn args = do
arg_exprs <- sequence args
- return (CmmMachOp (fn (cmmExprRep (head arg_exprs))) arg_exprs)
+ return (CmmMachOp (fn (typeWidth (cmmExprType (head arg_exprs)))) arg_exprs)
getLit :: CmmExpr -> CmmLit
getLit (CmmLit l) = l
getLit (CmmMachOp (MO_S_Neg _) [CmmLit (CmmInt i r)]) = CmmInt (negate i) r
getLit _ = panic "invalid literal" -- TODO messy failure
-nameToMachOp :: FastString -> P (MachRep -> MachOp)
+nameToMachOp :: FastString -> P (Width -> MachOp)
nameToMachOp name =
case lookupUFM machOps name of
Nothing -> fail ("unknown primitive " ++ unpackFS name)
( "shrl", MO_U_Shr ),
( "shra", MO_S_Shr ),
- ( "lobits8", flip MO_U_Conv I8 ),
- ( "lobits16", flip MO_U_Conv I16 ),
- ( "lobits32", flip MO_U_Conv I32 ),
- ( "lobits64", flip MO_U_Conv I64 ),
- ( "sx16", flip MO_S_Conv I16 ),
- ( "sx32", flip MO_S_Conv I32 ),
- ( "sx64", flip MO_S_Conv I64 ),
- ( "zx16", flip MO_U_Conv I16 ),
- ( "zx32", flip MO_U_Conv I32 ),
- ( "zx64", flip MO_U_Conv I64 ),
- ( "f2f32", flip MO_S_Conv F32 ), -- TODO; rounding mode
- ( "f2f64", flip MO_S_Conv F64 ), -- TODO; rounding mode
- ( "f2i8", flip MO_S_Conv I8 ),
- ( "f2i16", flip MO_S_Conv I16 ),
- ( "f2i32", flip MO_S_Conv I32 ),
- ( "f2i64", flip MO_S_Conv I64 ),
- ( "i2f32", flip MO_S_Conv F32 ),
- ( "i2f64", flip MO_S_Conv F64 )
+ ( "lobits8", flip MO_UU_Conv W8 ),
+ ( "lobits16", flip MO_UU_Conv W16 ),
+ ( "lobits32", flip MO_UU_Conv W32 ),
+ ( "lobits64", flip MO_UU_Conv W64 ),
+
+ ( "zx16", flip MO_UU_Conv W16 ),
+ ( "zx32", flip MO_UU_Conv W32 ),
+ ( "zx64", flip MO_UU_Conv W64 ),
+
+ ( "sx16", flip MO_SS_Conv W16 ),
+ ( "sx32", flip MO_SS_Conv W32 ),
+ ( "sx64", flip MO_SS_Conv W64 ),
+
+ ( "f2f32", flip MO_FF_Conv W32 ), -- TODO; rounding mode
+ ( "f2f64", flip MO_FF_Conv W64 ), -- TODO; rounding mode
+ ( "f2i8", flip MO_FS_Conv W8 ),
+ ( "f2i16", flip MO_FS_Conv W16 ),
+ ( "f2i32", flip MO_FS_Conv W32 ),
+ ( "f2i64", flip MO_FS_Conv W64 ),
+ ( "i2f32", flip MO_SF_Conv W32 ),
+ ( "i2f64", flip MO_SF_Conv W64 )
]
callishMachOps = listToUFM $
parseSafety :: String -> P CmmSafety
parseSafety "safe" = return (CmmSafe NoC_SRT)
parseSafety "unsafe" = return CmmUnsafe
+parseSafety "interruptible" = return CmmInterruptible
parseSafety str = fail ("unrecognised safety: " ++ str)
-parseCmmKind :: String -> P CmmKind
-parseCmmKind "ptr" = return PtrHint
-parseCmmKind "signed" = return SignedHint
-parseCmmKind "float" = return FloatHint
-parseCmmKind str = fail ("unrecognised hint: " ++ str)
-
-parseGCKind :: String -> P GCKind
-parseGCKind "ptr" = return GCKindPtr
-parseGCKind str = fail ("unrecognized kin: " ++ str)
-
-defaultKind :: GCKind
-defaultKind = GCKindNonPtr
+parseCmmHint :: String -> P ForeignHint
+parseCmmHint "ptr" = return AddrHint
+parseCmmHint "signed" = return SignedHint
+parseCmmHint str = fail ("unrecognised hint: " ++ str)
-- labels are always pointers, so we might as well infer the hint
-inferCmmKind :: CmmExpr -> CmmKind
-inferCmmKind (CmmLit (CmmLabel _)) = PtrHint
-inferCmmKind (CmmReg (CmmGlobal g)) | isPtrGlobalReg g = PtrHint
-inferCmmKind _ = NoHint
-
-isPtrGlobalReg Sp = True
-isPtrGlobalReg SpLim = True
-isPtrGlobalReg Hp = True
-isPtrGlobalReg HpLim = True
-isPtrGlobalReg CurrentTSO = True
-isPtrGlobalReg CurrentNursery = True
-isPtrGlobalReg _ = False
+inferCmmHint :: CmmExpr -> ForeignHint
+inferCmmHint (CmmLit (CmmLabel _)) = AddrHint
+inferCmmHint (CmmReg (CmmGlobal g)) | isPtrGlobalReg g = AddrHint
+inferCmmHint _ = NoHint
+
+isPtrGlobalReg Sp = True
+isPtrGlobalReg SpLim = True
+isPtrGlobalReg Hp = True
+isPtrGlobalReg HpLim = True
+isPtrGlobalReg CurrentTSO = True
+isPtrGlobalReg CurrentNursery = True
+isPtrGlobalReg (VanillaReg _ VGcPtr) = True
+isPtrGlobalReg _ = False
happyError :: P a
happyError = srcParseFail
]
--- -----------------------------------------------------------------------------
--- Our extended FCode monad.
-
--- We add a mapping from names to CmmExpr, to support local variable names in
--- the concrete C-- code. The unique supply of the underlying FCode monad
--- is used to grab a new unique for each local variable.
-
--- In C--, a local variable can be declared anywhere within a proc,
--- and it scopes from the beginning of the proc to the end. Hence, we have
--- to collect declarations as we parse the proc, and feed the environment
--- back in circularly (to avoid a two-pass algorithm).
-
-data Named = Var CmmExpr | Label BlockId
-type Decls = [(FastString,Named)]
-type Env = UniqFM Named
-
-newtype ExtFCode a = EC { unEC :: Env -> Decls -> FCode (Decls, a) }
-
-type ExtCode = ExtFCode ()
-
-returnExtFC a = EC $ \e s -> return (s, a)
-thenExtFC (EC m) k = EC $ \e s -> do (s',r) <- m e s; unEC (k r) e s'
-
-instance Monad ExtFCode where
- (>>=) = thenExtFC
- return = returnExtFC
-
--- This function takes the variable decarations and imports and makes
--- an environment, which is looped back into the computation. In this
--- way, we can have embedded declarations that scope over the whole
--- procedure, and imports that scope over the entire module.
--- Discards the local declaration contained within decl'
-loopDecls :: ExtFCode a -> ExtFCode a
-loopDecls (EC fcode) =
- EC $ \e globalDecls -> do
- (decls', a) <- fixC (\ ~(decls,a) -> fcode (addListToUFM e (decls ++ globalDecls)) globalDecls)
- return (globalDecls, a)
-
-getEnv :: ExtFCode Env
-getEnv = EC $ \e s -> return (s, e)
-
-addVarDecl :: FastString -> CmmExpr -> ExtCode
-addVarDecl var expr = EC $ \e s -> return ((var, Var expr):s, ())
-
-addLabel :: FastString -> BlockId -> ExtCode
-addLabel name block_id = EC $ \e s -> return ((name, Label block_id):s, ())
-
-newLocal :: GCKind -> MachRep -> FastString -> ExtFCode LocalReg
-newLocal kind ty name = do
- u <- code newUnique
- let reg = LocalReg u ty kind
- addVarDecl name (CmmReg (CmmLocal reg))
- return reg
-
--- Creates a foreign label in the import. CLabel's labelDynamic
--- classifies these labels as dynamic, hence the code generator emits the
--- PIC code for them.
-newImport :: FastString -> ExtFCode ()
-newImport name
- = addVarDecl name (CmmLit (CmmLabel (mkForeignLabel name Nothing True)))
-
-newLabel :: FastString -> ExtFCode BlockId
-newLabel name = do
- u <- code newUnique
- addLabel name (BlockId u)
- return (BlockId u)
-
-lookupLabel :: FastString -> ExtFCode BlockId
-lookupLabel name = do
- env <- getEnv
- return $
- case lookupUFM env name of
- Just (Label l) -> l
- _other -> BlockId (newTagUnique (getUnique name) 'L')
-
--- Unknown names are treated as if they had been 'import'ed.
--- This saves us a lot of bother in the RTS sources, at the expense of
--- deferring some errors to link time.
-lookupName :: FastString -> ExtFCode CmmExpr
-lookupName name = do
- env <- getEnv
- return $
- case lookupUFM env name of
- Just (Var e) -> e
- _other -> CmmLit (CmmLabel (mkRtsCodeLabelFS name))
-
--- Lifting FCode computations into the ExtFCode monad:
-code :: FCode a -> ExtFCode a
-code fc = EC $ \e s -> do r <- fc; return (s, r)
-
-code2 :: (FCode (Decls,b) -> FCode ((Decls,b),c))
- -> ExtFCode b -> ExtFCode c
-code2 f (EC ec) = EC $ \e s -> do ((s',b),c) <- f (ec e s); return (s',c)
-
-nopEC = code nopC
-stmtEC stmt = code (stmtC stmt)
-stmtsEC stmts = code (stmtsC stmts)
-getCgStmtsEC = code2 getCgStmts'
-getCgStmtsEC' = code2 (\m -> getCgStmts' m >>= f)
- where f ((decl, b), c) = return ((decl, b), (b, c))
-
-forkLabelledCodeEC ec = do
- stmts <- getCgStmtsEC ec
- code (forkCgStmts stmts)
profilingInfo desc_str ty_str = do
return (ProfilingInfo lit1 lit2)
-staticClosure :: FastString -> FastString -> [CmmLit] -> ExtCode
-staticClosure cl_label info payload
- = code $ emitDataLits (mkRtsDataLabelFS cl_label) lits
- where lits = mkStaticClosure (mkRtsInfoLabelFS info) dontCareCCS payload [] [] []
+staticClosure :: PackageId -> FastString -> FastString -> [CmmLit] -> ExtCode
+staticClosure pkg cl_label info payload
+ = code $ emitDataLits (mkCmmDataLabel pkg cl_label) lits
+ where lits = mkStaticClosure (mkCmmInfoLabel pkg info) dontCareCCS payload [] [] []
foreignCall
:: String
- -> [ExtFCode CmmFormal]
+ -> [ExtFCode HintedCmmFormal]
-> ExtFCode CmmExpr
- -> [ExtFCode CmmActual]
+ -> [ExtFCode HintedCmmActual]
-> Maybe [GlobalReg]
-> CmmSafety
-> CmmReturnInfo
code (emitForeignCall' (PlaySafe unused) results
(CmmCallee expr' convention) args vols NoC_SRT ret) where
unused = panic "not used by emitForeignCall'"
+ CmmInterruptible ->
+ code (emitForeignCall' PlayInterruptible results
+ (CmmCallee expr' convention) args vols NoC_SRT ret)
-adjCallTarget :: CCallConv -> CmmExpr -> [CmmKinded CmmExpr] -> CmmExpr
+adjCallTarget :: CCallConv -> CmmExpr -> [CmmHinted CmmExpr] -> CmmExpr
#ifdef mingw32_TARGET_OS
-- On Windows, we have to add the '@N' suffix to the label when making
-- a call with the stdcall calling convention.
adjCallTarget StdCallConv (CmmLit (CmmLabel lbl)) args
= CmmLit (CmmLabel (addLabelSize lbl (sum (map size args))))
- where size (CmmKinded e _) = max wORD_SIZE (machRepByteWidth (cmmExprRep e))
+ where size (CmmHinted e _) = max wORD_SIZE (widthInBytes (typeWidth (cmmExprType e)))
-- c.f. CgForeignCall.emitForeignCall
#endif
adjCallTarget _ expr _
= expr
primCall
- :: [ExtFCode CmmFormal]
+ :: [ExtFCode HintedCmmFormal]
-> FastString
- -> [ExtFCode CmmActual]
+ -> [ExtFCode HintedCmmActual]
-> Maybe [GlobalReg]
-> CmmSafety
-> P ExtCode
code (emitForeignCall' (PlaySafe unused) results
(CmmPrim p) args vols NoC_SRT CmmMayReturn) where
unused = panic "not used by emitForeignCall'"
+ CmmInterruptible ->
+ code (emitForeignCall' PlayInterruptible results
+ (CmmPrim p) args vols NoC_SRT CmmMayReturn)
-doStore :: MachRep -> ExtFCode CmmExpr -> ExtFCode CmmExpr -> ExtCode
+doStore :: CmmType -> ExtFCode CmmExpr -> ExtFCode CmmExpr -> ExtCode
doStore rep addr_code val_code
= do addr <- addr_code
val <- val_code
-- mismatch to be flagged by cmm-lint. If we don't do this, then
-- the store will happen at the wrong type, and the error will not
-- be noticed.
+ let val_width = typeWidth (cmmExprType val)
+ rep_width = typeWidth rep
let coerce_val
- | cmmExprRep val /= rep = CmmMachOp (MO_U_Conv rep rep) [val]
- | otherwise = val
+ | val_width /= rep_width = CmmMachOp (MO_UU_Conv val_width rep_width) [val]
+ | otherwise = val
stmtEC (CmmStore addr coerce_val)
-- Return an unboxed tuple.
emitRetUT args = do
tickyUnboxedTupleReturn (length args) -- TICK
(sp, stmts) <- pushUnboxedTuple 0 args
- emitStmts stmts
+ emitSimultaneously stmts -- NB. the args might overlap with the stack slots
+ -- or regs that we assign to, so better use
+ -- simultaneous assignments here (#3546)
when (sp /= 0) $ stmtC (CmmAssign spReg (cmmRegOffW spReg (-sp)))
- stmtC (CmmJump (entryCode (CmmLoad (cmmRegOffW spReg sp) wordRep)) [])
+ stmtC (CmmJump (entryCode (CmmLoad (cmmRegOffW spReg sp) bWord)) [])
-- TODO (when using CPS): emitStmt (CmmReturn (map snd args))
-- -----------------------------------------------------------------------------
initEnv :: Env
initEnv = listToUFM [
( fsLit "SIZEOF_StgHeader",
- Var (CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordRep) )),
+ Var (CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordWidth) )),
( fsLit "SIZEOF_StgInfoTable",
- Var (CmmLit (CmmInt (fromIntegral stdInfoTableSizeB) wordRep) ))
+ Var (CmmLit (CmmInt (fromIntegral stdInfoTableSizeB) wordWidth) ))
]
-parseCmmFile :: DynFlags -> FilePath -> IO (Maybe Cmm)
+parseCmmFile :: DynFlags -> FilePath -> IO (Messages, Maybe Cmm)
parseCmmFile dflags filename = do
showPass dflags "ParseCmm"
buf <- hGetStringBuffer filename
let
- init_loc = mkSrcLoc (mkFastString filename) 1 0
- init_state = (mkPState buf init_loc dflags) { lex_state = [0] }
+ init_loc = mkSrcLoc (mkFastString filename) 1 1
+ init_state = (mkPState dflags buf init_loc) { lex_state = [0] }
-- reset the lex_state: the Lexer monad leaves some stuff
-- in there we don't want.
case unP cmmParse init_state of
- PFailed span err -> do printError span err; return Nothing
+ PFailed span err -> do
+ let msg = mkPlainErrMsg span err
+ return ((emptyBag, unitBag msg), Nothing)
POk pst code -> do
- cmm <- initC dflags no_module (getCmm (unEC code initEnv [] >> return ()))
- let ms = getMessages pst
- printErrorsAndWarnings dflags ms
- when (errorsFound dflags ms) $ exitWith (ExitFailure 1)
- dumpIfSet_dyn dflags Opt_D_dump_cmm "Cmm" (ppr cmm)
- return (Just cmm)
+ cmm <- initC dflags no_module (getCmm (unEC code initEnv [] >> return ()))
+ let ms = getMessages pst
+ if (errorsFound dflags ms)
+ then return (ms, Nothing)
+ else do
+ dumpIfSet_dyn dflags Opt_D_dump_cmm "Cmm" (ppr cmm)
+ return (ms, Just cmm)
where
no_module = panic "parseCmmFile: no module"
}
projects / ghc-hetmet.git / blobdiff