swap <[]> and <{}> syntax

[ghc-hetmet.git] / compiler / prelude / PrimOp.lhs

diff --git a/compiler/prelude/PrimOp.lhs b/compiler/prelude/PrimOp.lhs
index 6338941..29c5644 100644 (file)
--- a/compiler/prelude/PrimOp.lhs
+++ b/compiler/prelude/PrimOp.lhs
@@ -18,10 +18,12 @@ module PrimOp (
 
        tagToEnumKey,
 
-       primOpOutOfLine, primOpNeedsWrapper, 
-       primOpOkForSpeculation, primOpIsCheap, primOpIsDupable,
+        primOpOutOfLine, primOpCodeSize,
+        primOpOkForSpeculation, primOpIsCheap,
 
-       getPrimOpResultInfo,  PrimOpResultInfo(..)
+       getPrimOpResultInfo,  PrimOpResultInfo(..),
+
+        PrimCall(..)
     ) where
 
 #include "HsVersions.h"
@@ -29,17 +31,19 @@ module PrimOp (
 import TysPrim
 import TysWiredIn
 
-import NewDemand
+import Demand
 import Var             ( TyVar )
 import OccName         ( OccName, pprOccName, mkVarOccFS )
 import TyCon           ( TyCon, isPrimTyCon, tyConPrimRep, PrimRep(..) )
 import Type            ( Type, mkForAllTys, mkFunTy, mkFunTys, tyConAppTyCon,
                          typePrimRep )
 import BasicTypes      ( Arity, Boxity(..) )
+import ForeignCall     ( CLabelString )
 import Unique          ( Unique, mkPrimOpIdUnique )
 import Outputable
 import FastTypes
 import FastString
+import Module          ( PackageId )
 \end{code}
 
 %************************************************************************
@@ -359,18 +363,23 @@ primOpIsCheap op = primOpOkForSpeculation op
 -- even if primOpIsCheap sometimes says 'True'.
 \end{code}
 
-primOpIsDupable
-~~~~~~~~~~~~~~~
-primOpIsDupable means that the use of the primop is small enough to
-duplicate into different case branches.  See CoreUtils.exprIsDupable.
+primOpCodeSize
+~~~~~~~~~~~~~~
+Gives an indication of the code size of a primop, for the purposes of
+calculating unfolding sizes; see CoreUnfold.sizeExpr.
 
 \begin{code}
-primOpIsDupable :: PrimOp -> Bool
-       -- See comments with CoreUtils.exprIsDupable
-       -- We say it's dupable it isn't implemented by a C call with a wrapper
-primOpIsDupable op = not (primOpNeedsWrapper op)
-\end{code}
+primOpCodeSize :: PrimOp -> Int
+#include "primop-code-size.hs-incl"
 
+primOpCodeSizeDefault :: Int
+primOpCodeSizeDefault = 1
+  -- CoreUnfold.primOpSize already takes into account primOpOutOfLine
+  -- and adds some further costs for the args in that case.
+
+primOpCodeSizeForeignCall :: Int
+primOpCodeSizeForeignCall = 4
+\end{code}
 
 \begin{code}
 primOpCanFail :: PrimOp -> Bool
@@ -417,14 +426,6 @@ primOpHasSideEffects :: PrimOp -> Bool
 #include "primop-has-side-effects.hs-incl"
 \end{code}
 
-Inline primitive operations that perform calls need wrappers to save
-any live variables that are stored in caller-saves registers.
-
-\begin{code}
-primOpNeedsWrapper :: PrimOp -> Bool
-#include "primop-needs-wrapper.hs-incl"
-\end{code}
-
 \begin{code}
 primOpType :: PrimOp -> Type  -- you may want to use primOpSig instead
 primOpType op
@@ -506,3 +507,18 @@ pprPrimOp  :: PrimOp -> SDoc
 pprPrimOp other_op = pprOccName (primOpOcc other_op)
 \end{code}
 
+
+%************************************************************************
+%*                                                                     *
+\subsubsection[PrimCall]{User-imported primitive calls}
+%*                                                                     *
+%************************************************************************
+
+\begin{code}
+data PrimCall = PrimCall CLabelString PackageId
+
+instance Outputable PrimCall where
+  ppr (PrimCall lbl pkgId) 
+       = text "__primcall" <+> ppr pkgId <+> ppr lbl
+
+\end{code}