-- (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
+
{
+{-# LANGUAGE BangPatterns #-} -- required for versions of Happy before 1.18.6
+{-# OPTIONS -Wwarn -w #-}
+-- 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
+-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
module CmmParse ( parseCmmFile ) where
-import CgMonad
+import CgMonad hiding (getDynFlags)
+import CgExtCode
import CgHeapery
import CgUtils
import CgProf
import CgClosure
import CostCentre
-import Cmm
-import PprCmm
+import BlockId
+import OldCmm
+import OldPprCmm()
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
import Data.Char ( ord )
import System.Exit
#include "HsVersions.h"
}
+%expect 0
+
%token
':' { L _ (CmmT_SpecChar ':') }
';' { L _ (CmmT_SpecChar ';') }
'if' { L _ (CmmT_if) }
'jump' { L _ (CmmT_jump) }
'foreign' { L _ (CmmT_foreign) }
+ 'never' { L _ (CmmT_never) }
'prim' { L _ (CmmT_prim) }
'return' { L _ (CmmT_return) }
+ 'returns' { L _ (CmmT_returns) }
'import' { L _ (CmmT_import) }
'switch' { L _ (CmmT_switch) }
'case' { L _ (CmmT_case) }
'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 (mkRtsInfoLabelFS $3)
+ mkStaticClosure (mkForeignLabel $3 Nothing ForeignLabelInExternalPackage IsData)
+ -- mkForeignLabel because these are only used
+ -- for CHARLIKE and INTLIKE closures in the RTS.
dontCareCCS (map getLit lits) [] [] [] }
-- arrays of closures required for the CHARLIKE & INTLIKE arrays
| ',' expr lits { $2 : $3 }
cmmproc :: { ExtCode }
- : info '{' body '}'
- { do (info_lbl, info1, info2) <- $1;
- stmts <- getCgStmtsEC (loopDecls $3)
- blks <- code (cgStmtsToBlocks stmts)
- code (emitInfoTableAndCode info_lbl info1 info2 [] blks) }
-
- | info ';'
- { do (info_lbl, info1, info2) <- $1;
- code (emitInfoTableAndCode info_lbl info1 info2 [] []) }
-
- | NAME '{' body '}'
- { do stmts <- getCgStmtsEC (loopDecls $3);
+-- TODO: add real SRT/info tables to parsed Cmm
+ : 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;
+ formals <- sequence $2;
+ gc_block <- $3;
+ frame <- $4;
+ $6;
+ return (entry_ret_label, info, live, formals, gc_block, frame) }
blks <- code (cgStmtsToBlocks stmts)
- code (emitProc [] (mkRtsCodeLabelFS $1) [] blks) }
-
-info :: { ExtFCode (CLabel, [CmmLit],[CmmLit]) }
+ code (emitInfoTableAndCode entry_ret_label (CmmInfo gc_block frame info) formals blks) }
+
+ | 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_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
- { stdInfo $3 $5 $7 0 $9 $11 $13 }
+ {% 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
- { funInfo $3 $5 $7 $9 $11 $13 $15 }
+ {% 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
+ -- to generate the BCO info table in the RTS at the moment.
+
+ -- 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
+ {% 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
+ -- to generate the BCO info table in the RTS at the moment.
| 'INFO_TABLE_CONSTR' '(' NAME ',' INT ',' INT ',' INT ',' INT ',' STRING ',' STRING ')'
-- ptrs, nptrs, tag, closure type, description, type
- { conInfo $3 $5 $7 $9 $11 $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 (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
- { basicInfo $3 (mkIntCLit (fromIntegral $5)) 0 $7 $9 $11 }
-
- | 'INFO_TABLE_RET' '(' NAME ',' INT ',' INT ',' INT ')'
- { retInfo $3 $5 $7 $9 }
+ {% 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)
+ {% 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_hints0 ')'
+ -- closure type, live regs
+ {% 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) }
body :: { ExtCode }
: {- empty -} { return () }
decl :: { ExtCode }
: type names ';' { mapM_ (newLocal $1) $2 }
- | 'import' names ';' { return () } -- ignore imports
+ | '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 }
| NAME ':'
{ do l <- newLabel $1; code (labelC l) }
--- HACK: this should just be lregs but that causes a shift/reduce conflict
--- with foreign calls
- | hint_lregs '=' expr ';'
- { do reg <- head $1; e <- $3; stmtEC (CmmAssign (fst reg) e) }
+ | lreg '=' expr ';'
+ { do reg <- $1; e <- $3; stmtEC (CmmAssign reg e) }
| type '[' expr ']' '=' expr ';'
{ doStore $1 $3 $6 }
- | maybe_results 'foreign' STRING expr '(' hint_exprs0 ')' vols ';'
- {% foreignCall $3 $1 $4 $6 $8 }
- | maybe_results 'prim' '%' NAME '(' hint_exprs0 ')' vols ';'
- {% primCall $1 $4 $6 $8 }
+
+ -- Gah! We really want to say "maybe_results" but that causes
+ -- a shift/reduce conflict with assignment. We either
+ -- we expand out the no-result and single result cases or
+ -- 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_hint_exprs0 ')' safety vols opt_never_returns ';'
+ {% foreignCall $3 $1 $4 $6 $9 $8 $10 }
+ | 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?
| NAME '(' exprs0 ')' ';'
{% stmtMacro $1 $3 }
| 'switch' maybe_range expr '{' arms default '}'
- { doSwitch $2 $3 $5 $6 }
+ { do as <- sequence $5; doSwitch $2 $3 as $6 }
| 'goto' NAME ';'
{ do l <- lookupLabel $2; stmtEC (CmmBranch l) }
| 'jump' expr maybe_actuals ';'
{ do e1 <- $2; e2 <- sequence $3; stmtEC (CmmJump e1 e2) }
| 'return' maybe_actuals ';'
{ do e <- sequence $2; stmtEC (CmmReturn e) }
+ | 'if' bool_expr 'goto' NAME
+ { do l <- lookupLabel $4; cmmRawIf $2 l }
| 'if' bool_expr '{' body '}' else
- { ifThenElse $2 $4 $6 }
+ { cmmIfThenElse $2 $4 $6 }
+
+opt_never_returns :: { CmmReturnInfo }
+ : { CmmMayReturn }
+ | 'never' 'returns' { CmmNeverReturns }
bool_expr :: { ExtFCode BoolExpr }
: bool_op { $1 }
| '(' bool_op ')' { $2 }
-- This is not C-- syntax. What to do?
+safety :: { CmmSafety }
+ : {- empty -} { CmmUnsafe } -- Default may change soon
+ | STRING {% parseSafety $1 }
+
+-- This is not C-- syntax. What to do?
vols :: { Maybe [GlobalReg] }
: {- empty -} { Nothing }
| '[' ']' { Just [] }
: '[' INT '..' INT ']' { Just (fromIntegral $2, fromIntegral $4) }
| {- empty -} { Nothing }
-arms :: { [([Int],ExtCode)] }
+arms :: { [ExtFCode ([Int],Either BlockId ExtCode)] }
: {- empty -} { [] }
| arm arms { $1 : $2 }
-arm :: { ([Int],ExtCode) }
- : 'case' ints ':' '{' body '}' { ($2, $5) }
+arm :: { ExtFCode ([Int],Either BlockId ExtCode) }
+ : 'case' ints ':' arm_body { do b <- $4; return ($2, b) }
+
+arm_body :: { ExtFCode (Either BlockId ExtCode) }
+ : '{' body '}' { return (Right $2) }
+ | 'goto' NAME ';' { do l <- lookupLabel $2; return (Left l) }
ints :: { [Int] }
: INT { [ fromIntegral $1 ] }
-- 'default' branches
| {- empty -} { Nothing }
+-- Note: OldCmm doesn't support a first class 'else' statement, though
+-- CmmNode does.
else :: { ExtCode }
: {- empty -} { nopEC }
| 'else' '{' body '}' { $3 }
| 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 (CmmExpr, MachHint)] }
+maybe_actuals :: { [ExtFCode HintedCmmActual] }
: {- empty -} { [] }
- | '(' hint_exprs0 ')' { $2 }
+ | '(' cmm_hint_exprs0 ')' { $2 }
-hint_exprs0 :: { [ExtFCode (CmmExpr, MachHint)] }
+cmm_hint_exprs0 :: { [ExtFCode HintedCmmActual] }
: {- empty -} { [] }
- | hint_exprs { $1 }
+ | cmm_hint_exprs { $1 }
-hint_exprs :: { [ExtFCode (CmmExpr, MachHint)] }
- : hint_expr { [$1] }
- | hint_expr ',' hint_exprs { $1 : $3 }
+cmm_hint_exprs :: { [ExtFCode HintedCmmActual] }
+ : cmm_hint_expr { [$1] }
+ | cmm_hint_expr ',' cmm_hint_exprs { $1 : $3 }
-hint_expr :: { ExtFCode (CmmExpr, MachHint) }
- : expr { do e <- $1; return (e, inferHint e) }
- | expr STRING {% do h <- parseHint $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 (e,h) }
+ e <- $1; return (CmmHinted e h) }
exprs0 :: { [ExtFCode CmmExpr] }
: {- empty -} { [] }
: NAME { lookupName $1 }
| GLOBALREG { return (CmmReg (CmmGlobal $1)) }
-maybe_results :: { [ExtFCode (CmmReg, MachHint)] }
+maybe_results :: { [ExtFCode HintedCmmFormal] }
: {- empty -} { [] }
- | hint_lregs '=' { $1 }
+ | '(' cmm_formals ')' '=' { $2 }
-hint_lregs :: { [ExtFCode (CmmReg, MachHint)] }
- : hint_lreg ',' { [$1] }
- | hint_lreg { [$1] }
- | hint_lreg ',' hint_lregs { $1 : $3 }
+cmm_formals :: { [ExtFCode HintedCmmFormal] }
+ : cmm_formal { [$1] }
+ | cmm_formal ',' { [$1] }
+ | cmm_formal ',' cmm_formals { $1 : $3 }
-hint_lreg :: { ExtFCode (CmmReg, MachHint) }
- : lreg { do e <- $1; return (e, inferHint (CmmReg e)) }
- | STRING lreg {% do h <- parseHint $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 (e,h) }
+ e <- $2; return (CmmHinted e h) }
+
+local_lreg :: { ExtFCode LocalReg }
+ : NAME { do e <- lookupName $1;
+ return $
+ case e of
+ CmmReg (CmmLocal r) -> r
+ other -> pprPanic "CmmParse:" (ftext $1 <> text " not a local register") }
lreg :: { ExtFCode CmmReg }
: NAME { do e <- lookupName $1;
other -> pprPanic "CmmParse:" (ftext $1 <> text " not a register") }
| GLOBALREG { return (CmmGlobal $1) }
-type :: { MachRep }
- : 'bits8' { I8 }
+maybe_formals_without_hints :: { [ExtFCode LocalReg] }
+ : {- empty -} { [] }
+ | '(' formals_without_hints0 ')' { $2 }
+
+formals_without_hints0 :: { [ExtFCode LocalReg] }
+ : {- empty -} { [] }
+ | formals_without_hints { $1 }
+
+formals_without_hints :: { [ExtFCode LocalReg] }
+ : formal_without_hint ',' { [$1] }
+ | formal_without_hint { [$1] }
+ | formal_without_hint ',' formals_without_hints { $1 : $3 }
+
+formal_without_hint :: { ExtFCode LocalReg }
+ : type NAME { newLocal $1 $2 }
+
+maybe_frame :: { ExtFCode (Maybe UpdateFrame) }
+ : {- empty -} { return Nothing }
+ | 'jump' expr '(' exprs0 ')' { do { target <- $2;
+ args <- sequence $4;
+ return $ Just (UpdateFrame target args) } }
+
+maybe_gc_block :: { ExtFCode (Maybe BlockId) }
+ : {- empty -} { return Nothing }
+ | 'goto' NAME
+ { do l <- lookupLabel $2; return (Just l) }
+
+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)
exprMacros :: UniqFM ([CmmExpr] -> CmmExpr)
exprMacros = listToUFM [
- ( FSLIT("ENTRY_CODE"), \ [x] -> entryCode x ),
- ( FSLIT("INFO_PTR"), \ [x] -> closureInfoPtr x ),
- ( FSLIT("STD_INFO"), \ [x] -> infoTable x ),
- ( FSLIT("FUN_INFO"), \ [x] -> funInfoTable x ),
- ( FSLIT("GET_ENTRY"), \ [x] -> entryCode (closureInfoPtr x) ),
- ( FSLIT("GET_STD_INFO"), \ [x] -> infoTable (closureInfoPtr x) ),
- ( FSLIT("GET_FUN_INFO"), \ [x] -> funInfoTable (closureInfoPtr x) ),
- ( FSLIT("INFO_TYPE"), \ [x] -> infoTableClosureType x ),
- ( FSLIT("INFO_PTRS"), \ [x] -> infoTablePtrs x ),
- ( FSLIT("INFO_NPTRS"), \ [x] -> infoTableNonPtrs x )
+ ( fsLit "ENTRY_CODE", \ [x] -> entryCode x ),
+ ( fsLit "INFO_PTR", \ [x] -> closureInfoPtr x ),
+ ( fsLit "STD_INFO", \ [x] -> infoTable x ),
+ ( fsLit "FUN_INFO", \ [x] -> funInfoTable x ),
+ ( fsLit "GET_ENTRY", \ [x] -> entryCode (closureInfoPtr x) ),
+ ( fsLit "GET_STD_INFO", \ [x] -> infoTable (closureInfoPtr x) ),
+ ( fsLit "GET_FUN_INFO", \ [x] -> funInfoTable (closureInfoPtr x) ),
+ ( fsLit "INFO_TYPE", \ [x] -> infoTableClosureType x ),
+ ( fsLit "INFO_PTRS", \ [x] -> infoTablePtrs x ),
+ ( fsLit "INFO_NPTRS", \ [x] -> infoTableNonPtrs x )
]
-- we understand a subset of C-- primitives:
( "gtu", MO_U_Gt ),
( "ltu", MO_U_Lt ),
- ( "flt", MO_S_Lt ),
- ( "fle", MO_S_Le ),
- ( "feq", MO_Eq ),
- ( "fne", MO_Ne ),
- ( "fgt", MO_S_Gt ),
- ( "fge", MO_S_Ge ),
- ( "fneg", MO_S_Neg ),
-
- ( "and", MO_And ),
+ ( "and", MO_And ),
( "or", MO_Or ),
( "xor", MO_Xor ),
( "com", MO_Not ),
( "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 )
+ ( "fadd", MO_F_Add ),
+ ( "fsub", MO_F_Sub ),
+ ( "fneg", MO_F_Neg ),
+ ( "fmul", MO_F_Mul ),
+ ( "fquot", MO_F_Quot ),
+
+ ( "feq", MO_F_Eq ),
+ ( "fne", MO_F_Ne ),
+ ( "fge", MO_F_Ge ),
+ ( "fle", MO_F_Le ),
+ ( "fgt", MO_F_Gt ),
+ ( "flt", MO_F_Lt ),
+
+ ( "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 $
map (\(x, y) -> (mkFastString x, y)) [
- ( "write_barrier", MO_WriteBarrier )
+ ( "write_barrier", MO_WriteBarrier ),
+ ( "memcpy", MO_Memcpy ),
+ ( "memset", MO_Memset ),
+ ( "memmove", MO_Memmove )
-- ToDo: the rest, maybe
]
-parseHint :: String -> P MachHint
-parseHint "ptr" = return PtrHint
-parseHint "signed" = return SignedHint
-parseHint "float" = return FloatHint
-parseHint str = fail ("unrecognised hint: " ++ str)
+parseSafety :: String -> P CmmSafety
+parseSafety "safe" = return (CmmSafe NoC_SRT)
+parseSafety "unsafe" = return CmmUnsafe
+parseSafety "interruptible" = return CmmInterruptible
+parseSafety str = fail ("unrecognised safety: " ++ str)
+
+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
-inferHint :: CmmExpr -> MachHint
-inferHint (CmmLit (CmmLabel _)) = PtrHint
-inferHint (CmmReg (CmmGlobal g)) | isPtrGlobalReg g = PtrHint
-inferHint _ = 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
stmtMacros :: UniqFM ([CmmExpr] -> Code)
stmtMacros = listToUFM [
- ( FSLIT("CCS_ALLOC"), \[words,ccs] -> profAlloc words ccs ),
- ( FSLIT("CLOSE_NURSERY"), \[] -> emitCloseNursery ),
- ( FSLIT("ENTER_CCS_PAP_CL"), \[e] -> enterCostCentrePAP e ),
- ( FSLIT("ENTER_CCS_THUNK"), \[e] -> enterCostCentreThunk e ),
- ( FSLIT("HP_CHK_GEN"), \[words,liveness,reentry] ->
+ ( fsLit "CCS_ALLOC", \[words,ccs] -> profAlloc words ccs ),
+ ( fsLit "CLOSE_NURSERY", \[] -> emitCloseNursery ),
+ ( fsLit "ENTER_CCS_PAP_CL", \[e] -> enterCostCentrePAP e ),
+ ( fsLit "ENTER_CCS_THUNK", \[e] -> enterCostCentreThunk e ),
+ ( fsLit "HP_CHK_GEN", \[words,liveness,reentry] ->
hpChkGen words liveness reentry ),
- ( FSLIT("HP_CHK_NP_ASSIGN_SP0"), \[e,f] -> hpChkNodePointsAssignSp0 e f ),
- ( FSLIT("LOAD_THREAD_STATE"), \[] -> emitLoadThreadState ),
- ( FSLIT("LDV_ENTER"), \[e] -> ldvEnter e ),
- ( FSLIT("LDV_RECORD_CREATE"), \[e] -> ldvRecordCreate e ),
- ( FSLIT("OPEN_NURSERY"), \[] -> emitOpenNursery ),
- ( FSLIT("PUSH_UPD_FRAME"), \[sp,e] -> emitPushUpdateFrame sp e ),
- ( FSLIT("SAVE_THREAD_STATE"), \[] -> emitSaveThreadState ),
- ( FSLIT("SET_HDR"), \[ptr,info,ccs] ->
+ ( fsLit "HP_CHK_NP_ASSIGN_SP0", \[e,f] -> hpChkNodePointsAssignSp0 e f ),
+ ( fsLit "LOAD_THREAD_STATE", \[] -> emitLoadThreadState ),
+ ( fsLit "LDV_ENTER", \[e] -> ldvEnter e ),
+ ( fsLit "LDV_RECORD_CREATE", \[e] -> ldvRecordCreate e ),
+ ( fsLit "OPEN_NURSERY", \[] -> emitOpenNursery ),
+ ( fsLit "PUSH_UPD_FRAME", \[sp,e] -> emitPushUpdateFrame sp e ),
+ ( fsLit "SAVE_THREAD_STATE", \[] -> emitSaveThreadState ),
+ ( fsLit "SET_HDR", \[ptr,info,ccs] ->
emitSetDynHdr ptr info ccs ),
- ( FSLIT("STK_CHK_GEN"), \[words,liveness,reentry] ->
+ ( fsLit "STK_CHK_GEN", \[words,liveness,reentry] ->
stkChkGen words liveness reentry ),
- ( FSLIT("STK_CHK_NP"), \[e] -> stkChkNodePoints e ),
- ( FSLIT("TICK_ALLOC_PRIM"), \[hdr,goods,slop] ->
+ ( fsLit "STK_CHK_NP", \[e] -> stkChkNodePoints e ),
+ ( fsLit "TICK_ALLOC_PRIM", \[hdr,goods,slop] ->
tickyAllocPrim hdr goods slop ),
- ( FSLIT("TICK_ALLOC_PAP"), \[goods,slop] ->
+ ( fsLit "TICK_ALLOC_PAP", \[goods,slop] ->
tickyAllocPAP goods slop ),
- ( FSLIT("TICK_ALLOC_UP_THK"), \[goods,slop] ->
+ ( fsLit "TICK_ALLOC_UP_THK", \[goods,slop] ->
tickyAllocThunk goods slop ),
- ( FSLIT("UPD_BH_UPDATABLE"), \[] -> emitBlackHoleCode False ),
- ( FSLIT("UPD_BH_SINGLE_ENTRY"), \[] -> emitBlackHoleCode True ),
-
- ( FSLIT("RET_P"), \[a] -> emitRetUT [(PtrArg,a)]),
- ( FSLIT("RET_N"), \[a] -> emitRetUT [(NonPtrArg,a)]),
- ( FSLIT("RET_PP"), \[a,b] -> emitRetUT [(PtrArg,a),(PtrArg,b)]),
- ( FSLIT("RET_NN"), \[a,b] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b)]),
- ( FSLIT("RET_NP"), \[a,b] -> emitRetUT [(NonPtrArg,a),(PtrArg,b)]),
- ( FSLIT("RET_PPP"), \[a,b,c] -> emitRetUT [(PtrArg,a),(PtrArg,b),(PtrArg,c)]),
- ( FSLIT("RET_NPP"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(PtrArg,c)]),
- ( FSLIT("RET_NNP"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(PtrArg,c)]),
- ( FSLIT("RET_NNNP"), \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c),(PtrArg,d)]),
- ( FSLIT("RET_NPNP"), \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(NonPtrArg,c),(PtrArg,d)])
+ ( fsLit "UPD_BH_UPDATABLE", \[] -> emitBlackHoleCode False ),
+ ( fsLit "UPD_BH_SINGLE_ENTRY", \[] -> emitBlackHoleCode True ),
+
+ ( fsLit "RET_P", \[a] -> emitRetUT [(PtrArg,a)]),
+ ( fsLit "RET_N", \[a] -> emitRetUT [(NonPtrArg,a)]),
+ ( fsLit "RET_PP", \[a,b] -> emitRetUT [(PtrArg,a),(PtrArg,b)]),
+ ( fsLit "RET_NN", \[a,b] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b)]),
+ ( fsLit "RET_NP", \[a,b] -> emitRetUT [(NonPtrArg,a),(PtrArg,b)]),
+ ( fsLit "RET_PPP", \[a,b,c] -> emitRetUT [(PtrArg,a),(PtrArg,b),(PtrArg,c)]),
+ ( fsLit "RET_NPP", \[a,b,c] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(PtrArg,c)]),
+ ( fsLit "RET_NNP", \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(PtrArg,c)]),
+ ( fsLit "RET_NNN", \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c)]),
+ ( fsLit "RET_NNNN", \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c),(NonPtrArg,d)]),
+ ( fsLit "RET_NNNP", \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c),(PtrArg,d)]),
+ ( fsLit "RET_NPNP", \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(NonPtrArg,c),(PtrArg,d)])
]
--- -----------------------------------------------------------------------------
--- 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.
-loopDecls :: ExtFCode a -> ExtFCode a
-loopDecls (EC fcode) =
- EC $ \e s -> fixC (\ ~(decls,a) -> fcode (addListToUFM e decls) [])
-
-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 :: MachRep -> FastString -> ExtCode
-newLocal ty name = do
- u <- code newUnique
- addVarDecl name (CmmReg (CmmLocal (LocalReg u ty)))
-
-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'
-
-forkLabelledCodeEC ec = do
- stmts <- getCgStmtsEC ec
- code (forkCgStmts stmts)
-
-retInfo name size live_bits cl_type = do
- let liveness = smallLiveness (fromIntegral size) (fromIntegral live_bits)
- info_lbl = mkRtsRetInfoLabelFS name
- (info1,info2) = mkRetInfoTable info_lbl liveness NoC_SRT
- (fromIntegral cl_type)
- return (info_lbl, info1, info2)
-
-stdInfo name ptrs nptrs srt_bitmap cl_type desc_str ty_str =
- basicInfo name (packHalfWordsCLit ptrs nptrs)
- srt_bitmap cl_type desc_str ty_str
-
-conInfo name ptrs nptrs srt_bitmap cl_type desc_str ty_str = do
- (lbl, info1, _) <- basicInfo name (packHalfWordsCLit ptrs nptrs)
- srt_bitmap cl_type desc_str ty_str
- desc_lit <- code $ mkStringCLit desc_str
- let desc_field = makeRelativeRefTo lbl desc_lit
- return (lbl, info1, [desc_field])
-
-basicInfo name layout srt_bitmap cl_type desc_str ty_str = do
- let info_lbl = mkRtsInfoLabelFS name
+
+
+profilingInfo desc_str ty_str = do
lit1 <- if opt_SccProfilingOn
- then code $ do lit <- mkStringCLit desc_str
- return (makeRelativeRefTo info_lbl lit)
+ then code $ mkStringCLit desc_str
else return (mkIntCLit 0)
lit2 <- if opt_SccProfilingOn
- then code $ do lit <- mkStringCLit ty_str
- return (makeRelativeRefTo info_lbl lit)
+ then code $ mkStringCLit ty_str
else return (mkIntCLit 0)
- let info1 = mkStdInfoTable lit1 lit2 (fromIntegral cl_type)
- (fromIntegral srt_bitmap)
- layout
- return (info_lbl, info1, [])
-
-funInfo name ptrs nptrs cl_type desc_str ty_str fun_type = do
- (label,info1,_) <- stdInfo name ptrs nptrs 0{-srt_bitmap-}
- cl_type desc_str ty_str
- let info2 = mkFunGenInfoExtraBits (fromIntegral fun_type) 0 zero zero zero
- -- we leave most of the fields zero here. This is only used
- -- to generate the BCO info table in the RTS at the moment.
- return (label,info1,info2)
- where
- zero = mkIntCLit 0
+ 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 (CmmReg,MachHint)]
+ -> [ExtFCode HintedCmmFormal]
-> ExtFCode CmmExpr
- -> [ExtFCode (CmmExpr,MachHint)]
- -> Maybe [GlobalReg] -> P ExtCode
-foreignCall conv_string results_code expr_code args_code vols
+ -> [ExtFCode HintedCmmActual]
+ -> Maybe [GlobalReg]
+ -> CmmSafety
+ -> CmmReturnInfo
+ -> P ExtCode
+foreignCall conv_string results_code expr_code args_code vols safety ret
= do convention <- case conv_string of
"C" -> return CCallConv
+ "stdcall" -> return StdCallConv
"C--" -> return CmmCallConv
_ -> fail ("unknown calling convention: " ++ conv_string)
return $ do
results <- sequence results_code
expr <- expr_code
args <- sequence args_code
- code (emitForeignCall' PlayRisky results
- (CmmForeignCall expr convention) args vols) where
+ --code (stmtC (CmmCall (CmmCallee expr convention) results args safety))
+ case convention of
+ -- Temporary hack so at least some functions are CmmSafe
+ CmmCallConv -> code (stmtC (CmmCall (CmmCallee expr convention) results args safety ret))
+ _ ->
+ let expr' = adjCallTarget convention expr args in
+ case safety of
+ CmmUnsafe ->
+ code (emitForeignCall' PlayRisky results
+ (CmmCallee expr' convention) args vols NoC_SRT ret)
+ CmmSafe srt ->
+ 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 -> [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 (CmmHinted e _) = max wORD_SIZE (widthInBytes (typeWidth (cmmExprType e)))
+ -- c.f. CgForeignCall.emitForeignCall
+#endif
+adjCallTarget _ expr _
+ = expr
primCall
- :: [ExtFCode (CmmReg,MachHint)]
+ :: [ExtFCode HintedCmmFormal]
-> FastString
- -> [ExtFCode (CmmExpr,MachHint)]
- -> Maybe [GlobalReg] -> P ExtCode
-primCall results_code name args_code vols
+ -> [ExtFCode HintedCmmActual]
+ -> Maybe [GlobalReg]
+ -> CmmSafety
+ -> P ExtCode
+primCall results_code name args_code vols safety
= case lookupUFM callishMachOps name of
Nothing -> fail ("unknown primitive " ++ unpackFS name)
Just p -> return $ do
results <- sequence results_code
args <- sequence args_code
- code (emitForeignCall' PlayRisky results (CmmPrim p) args vols)
-
-doStore :: MachRep -> ExtFCode CmmExpr -> ExtFCode CmmExpr -> ExtCode
+ case safety of
+ CmmUnsafe ->
+ code (emitForeignCall' PlayRisky results
+ (CmmPrim p) args vols NoC_SRT CmmMayReturn)
+ CmmSafe srt ->
+ 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 :: 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))
-- -----------------------------------------------------------------------------
-- If-then-else and boolean expressions
-- ToDo: smart constructors which simplify the boolean expression.
-ifThenElse cond then_part else_part = do
+cmmIfThenElse cond then_part else_part = do
then_id <- code newLabelC
join_id <- code newLabelC
c <- cond
-- fall through to join
code (labelC join_id)
+cmmRawIf cond then_id = do
+ c <- cond
+ emitCond c then_id
+
-- 'emitCond cond true_id' emits code to test whether the cond is true,
-- branching to true_id if so, and falling through otherwise.
emitCond (BoolTest e) then_id = do
-- optional range on the switch (eg. switch [0..7] {...}), or by
-- the minimum/maximum values from the branches.
-doSwitch :: Maybe (Int,Int) -> ExtFCode CmmExpr -> [([Int],ExtCode)]
+doSwitch :: Maybe (Int,Int) -> ExtFCode CmmExpr -> [([Int],Either BlockId ExtCode)]
-> Maybe ExtCode -> ExtCode
doSwitch mb_range scrut arms deflt
= do
-- ToDo: check for out of range and jump to default if necessary
stmtEC (CmmSwitch expr entries)
where
- emitArm :: ([Int],ExtCode) -> ExtFCode [(Int,BlockId)]
- emitArm (ints,code) = do
+ emitArm :: ([Int],Either BlockId ExtCode) -> ExtFCode [(Int,BlockId)]
+ emitArm (ints,Left blockid) = return [ (i,blockid) | i <- ints ]
+ emitArm (ints,Right code) = do
blockid <- forkLabelledCodeEC code
return [ (i,blockid) | i <- ints ]
-
-- -----------------------------------------------------------------------------
-- Putting it all together
-- knows about here.
initEnv :: Env
initEnv = listToUFM [
- ( FSLIT("SIZEOF_StgHeader"),
- Var (CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordRep) )),
- ( FSLIT("SIZEOF_StgInfoTable"),
- Var (CmmLit (CmmInt (fromIntegral stdInfoTableSizeB) wordRep) ))
+ ( fsLit "SIZEOF_StgHeader",
+ Var (CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordWidth) )),
+ ( fsLit "SIZEOF_StgInfoTable",
+ 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 = mkRealSrcLoc (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" (pprCmms [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