primOpOkForSpeculation, primOpIsCheap, primOpIsDupable,
primOpHasSideEffects,
- getPrimOpResultInfo, PrimOpResultInfo(..),
-
- CCall(..), CCallTarget(..), ccallMayGC, ccallIsCasm, pprCCallOp,
- isDynamicTarget, dynamicTarget, setCCallUnique
+ getPrimOpResultInfo, PrimOpResultInfo(..)
) where
#include "HsVersions.h"
import Demand ( wwLazy, wwPrim, wwStrict, StrictnessInfo(..) )
import Var ( TyVar )
-import CallConv ( CallConv, pprCallConv )
import Name ( Name, mkWiredInName )
import RdrName ( RdrName, mkRdrOrig )
import OccName ( OccName, pprOccName, mkVarOcc )
-import TyCon ( TyCon, tyConArity )
-import Type ( Type, mkForAllTys, mkFunTy, mkFunTys, mkTyVarTys,
- mkTyConApp, typePrimRep,
+import TyCon ( TyCon )
+import Type ( Type, mkForAllTys, mkFunTy, mkFunTys, typePrimRep,
splitFunTy_maybe, splitAlgTyConApp_maybe, splitTyConApp,
mkUTy, usOnce, usMany
)
-import Unique ( Unique, mkPrimOpIdUnique )
+import Unique ( mkPrimOpIdUnique )
import BasicTypes ( Arity, Boxity(..) )
-import CStrings ( CLabelString, pprCLabelString )
import PrelNames ( pREL_GHC, pREL_GHC_Name )
import Outputable
import Util ( zipWithEqual )
-- supplies:
-- data PrimOp = ...
#include "primop-data-decl.hs-incl"
- | CCallOp CCall -- and don't forget to add CCall
\end{code}
Used for the Ord instance
allThePrimOps :: [PrimOp]
allThePrimOps =
#include "primop-list.hs-incl"
--- Doesn't include CCall, which is really a family of primops
\end{code}
%************************************************************************
perform a heap check or they block.
\begin{code}
-primOpOutOfLine (CCallOp c_call) = ccallMayGC c_call
#include "primop-out-of-line.hs-incl"
\end{code}
\begin{code}
primOpHasSideEffects :: PrimOp -> Bool
-primOpHasSideEffects (CCallOp _) = True
#include "primop-has-side-effects.hs-incl"
\end{code}
\begin{code}
primOpNeedsWrapper :: PrimOp -> Bool
-primOpNeedsWrapper (CCallOp _) = True
#include "primop-needs-wrapper.hs-incl"
\end{code}
-- as required by the UsageSP inference.
primOpUsg :: PrimOp -> ([TyVar],[Type],Type)
-primOpUsg p@(CCallOp _) = mangle p [] mkM
#include "primop-usage.hs-incl"
-- Things with no Haskell pointers inside: in actuality, usages are
-- be out of line, or the code generator won't work.
getPrimOpResultInfo :: PrimOp -> PrimOpResultInfo
-getPrimOpResultInfo (CCallOp _)
- = ReturnsAlg unboxedPairTyCon
getPrimOpResultInfo op
= case (primOpInfo op) of
Dyadic _ ty -> ReturnsPrim (typePrimRep ty)
Utils:
\begin{code}
-mkPrimTyApp :: [TyVar] -> PrimRep -> ([TyVar], Type)
- -- CharRep --> ([], Char#)
- -- StablePtrRep --> ([a], StablePtr# a)
-mkPrimTyApp tvs kind
- = (forall_tvs, mkTyConApp tycon (mkTyVarTys forall_tvs))
- where
- tycon = primRepTyCon kind
- forall_tvs = take (tyConArity tycon) tvs
-
dyadic_fun_ty ty = mkFunTys [ty, ty] ty
monadic_fun_ty ty = mkFunTy ty ty
compare_fun_ty ty = mkFunTys [ty, ty] boolTy
Output stuff:
\begin{code}
pprPrimOp :: PrimOp -> SDoc
-
-pprPrimOp (CCallOp c_call) = pprCCallOp c_call
pprPrimOp other_op
= getPprStyle $ \ sty ->
if ifaceStyle sty then -- For interfaces Print it qualified with PrelGHC.
\end{code}
-%************************************************************************
-%* *
-\subsubsection{CCalls}
-%* *
-%************************************************************************
-
-A special ``trap-door'' to use in making calls direct to C functions:
-\begin{code}
-data CCall
- = CCall CCallTarget
- Bool -- True <=> really a "casm"
- Bool -- True <=> might invoke Haskell GC
- CallConv -- calling convention to use.
- deriving( Eq )
-
-data CCallTarget
- = StaticTarget CLabelString -- An "unboxed" ccall# to `fn'.
- | DynamicTarget Unique -- First argument (an Addr#) is the function pointer
- -- (unique is used to generate a 'typedef' to cast
- -- the function pointer if compiling the ccall# down to
- -- .hc code - can't do this inline for tedious reasons.)
-
-instance Eq CCallTarget where
- (StaticTarget l1) == (StaticTarget l2) = l1 == l2
- (DynamicTarget _) == (DynamicTarget _) = True
- -- Ignore the arbitrary unique; this is important when comparing
- -- a dynamic ccall read from an interface file A.hi with the
- -- one constructed from A.hs, when deciding whether the interface
- -- has changed
- t1 == t2 = False
-
-ccallMayGC :: CCall -> Bool
-ccallMayGC (CCall _ _ may_gc _) = may_gc
-
-ccallIsCasm :: CCall -> Bool
-ccallIsCasm (CCall _ c_asm _ _) = c_asm
-
-isDynamicTarget (DynamicTarget _) = True
-isDynamicTarget (StaticTarget _) = False
-
-dynamicTarget :: CCallTarget
-dynamicTarget = DynamicTarget (panic "Unique in DynamicTarget not yet set")
- -- The unique is really only to do with code generation, so it
- -- is only set in CoreToStg; before then it's just an error message
-
-setCCallUnique :: CCall -> Unique -> CCall
-setCCallUnique (CCall (DynamicTarget _) is_asm may_gc cconv) uniq
- = CCall (DynamicTarget uniq) is_asm may_gc cconv
-setCCallUnique ccall uniq = ccall
-\end{code}
-
-\begin{code}
-pprCCallOp (CCall fun is_casm may_gc cconv)
- = hcat [ ifPprDebug callconv
- , text "__", ppr_dyn
- , text before , ppr_fun , after]
- where
- callconv = text "{-" <> pprCallConv cconv <> text "-}"
-
- before
- | is_casm && may_gc = "casm_GC ``"
- | is_casm = "casm ``"
- | may_gc = "ccall_GC "
- | otherwise = "ccall "
-
- after
- | is_casm = text "''"
- | otherwise = empty
-
- ppr_dyn = case fun of
- DynamicTarget _ -> text "dyn_"
- _ -> empty
-
- ppr_fun = case fun of
- DynamicTarget _ -> text "\"\""
- StaticTarget fn -> pprCLabelString fn
-\end{code}
projects / ghc-hetmet.git / blobdiff