[project @ 2001-08-08 08:44:47 by simonmar]

[ghc-hetmet.git] / ghc / compiler / nativeGen / AbsCStixGen.lhs

diff --git a/ghc/compiler/nativeGen/AbsCStixGen.lhs b/ghc/compiler/nativeGen/AbsCStixGen.lhs
index 2a3fe2d..f62c174 100644 (file)
--- a/ghc/compiler/nativeGen/AbsCStixGen.lhs
+++ b/ghc/compiler/nativeGen/AbsCStixGen.lhs
@@ -24,29 +24,29 @@ import SMRep                ( fixedItblSize,
 import Constants       ( mIN_UPD_SIZE )
 import CLabel           ( CLabel, mkReturnInfoLabel, mkReturnPtLabel,
                           mkClosureTblLabel, mkClosureLabel,
-                         moduleRegdLabel, labelDynamic,
-                         mkSplitMarkerLabel )
+                         labelDynamic, mkSplitMarkerLabel )
 import ClosureInfo     ( infoTableLabelFromCI, entryLabelFromCI,
                          fastLabelFromCI, closureUpdReqd,
                          staticClosureNeedsLink
                        )
 import Literal         ( Literal(..), word2IntLit )
 import Maybes          ( maybeToBool )
+import StgSyn          ( StgOp(..) )
 import PrimOp          ( primOpNeedsWrapper, PrimOp(..) )
 import PrimRep         ( isFloatingRep, PrimRep(..) )
-import StixInfo                ( genCodeInfoTable, genBitmapInfoTable )
+import StixInfo                ( genCodeInfoTable, genBitmapInfoTable,
+                         livenessIsSmall, bitmapToIntegers )
 import StixMacro       ( macroCode, checkCode )
-import StixPrim                ( primCode, amodeToStix, amodeToStix' )
+import StixPrim                ( primCode, foreignCallCode, amodeToStix, amodeToStix' )
 import Outputable       ( pprPanic, ppr )
 import UniqSupply      ( returnUs, thenUs, mapUs, getUniqueUs, UniqSM )
 import Util            ( naturalMergeSortLe )
 import Panic           ( panic )
 import TyCon           ( tyConDataCons )
 import DataCon         ( dataConWrapId )
-import BitSet          ( intBS )
 import Name             ( NamedThing(..) )
-import Char            ( ord )
 import CmdLineOpts     ( opt_Static, opt_EnsureSplittableC )
+import Outputable      ( assertPanic )
 \end{code}
 
 For each independent chunk of AbstractC code, we generate a list of
@@ -106,9 +106,7 @@ Here we handle top-level things, like @CCodeBlock@s and
   where 
        lbl_info = mkReturnInfoLabel uniq
        lbl_ret  = mkReturnPtLabel uniq
-       closure_type = case liveness of
-                        LvSmall _ -> rET_SMALL
-                        LvLarge _ -> rET_BIG
+       closure_type = if livenessIsSmall liveness then rET_SMALL else rET_BIG
 
  gentopcode stmt@(CClosureInfoAndCode cl_info slow Nothing _)
 
@@ -151,11 +149,13 @@ Here we handle top-level things, like @CCodeBlock@s and
           = StCLbl label
 
  gentopcode stmt@(CBitmap lbl mask)
-  = returnUs [ StSegment TextSegment 
-            , StLabel lbl 
-            , StData WordRep (StInt (toInteger (length mask)) : 
-                               map  (StInt . toInteger . intBS) mask)
-            ]
+  = returnUs $ case bitmapToIntegers mask of
+              mask'@(_:_:_) ->
+                [ StSegment TextSegment 
+                , StLabel lbl 
+                , StData WordRep (map StInt (toInteger (length mask') : mask'))
+                ]
+              _ -> []
 
  gentopcode stmt@(CClosureTbl tycon)
   = returnUs [ StSegment TextSegment
@@ -200,9 +200,7 @@ Here we handle top-level things, like @CCodeBlock@s and
     returnUs (\xs -> vectbl : itbl xs)
   where
     vectbl = StData PtrRep (reverse (map a2stix amodes))
-    closure_type = case liveness of
-                   LvSmall _ -> rET_VEC_SMALL
-                   LvLarge _ -> rET_VEC_BIG
+    closure_type = if livenessIsSmall liveness then rET_VEC_SMALL else rET_VEC_BIG
 
 \end{code}
 
@@ -223,19 +221,18 @@ Here we handle top-level things, like @CCodeBlock@s and
        = StData (promote_to_word (getAmodeRep amode)) [a2stix amode]
 
     -- We need to promote any item smaller than a word to a word
-    promote_to_word Int8Rep = IntRep
-    promote_to_word CharRep = IntRep
-    promote_to_word other   = other
+    promote_to_word pk 
+       | sizeOf pk >= sizeOf IntRep  = pk
+       | otherwise                   = IntRep
+
+    upd_reqd = closureUpdReqd cl_info
 
-    -- always at least one padding word: this is the static link field
-    -- for the garbage collector.
-    padding_wds = if closureUpdReqd cl_info then
-                       take (max 0 (mIN_UPD_SIZE - length amodes)) zeros
-                 else
-                       []
+    padding_wds
+       | upd_reqd  = take (max 0 (mIN_UPD_SIZE - length amodes)) zeros
+       | otherwise = []
 
-    static_link | staticClosureNeedsLink cl_info = [StInt 0]
-               | otherwise                      = []
+    static_link | upd_reqd || staticClosureNeedsLink cl_info = [StInt 0]
+               | otherwise                                  = []
 
     zeros = StInt 0 : zeros
 
@@ -374,12 +371,15 @@ which varies depending on whether we're profiling etc.
 Now the PrimOps, some of which may need caller-saves register wrappers.
 
 \begin{code}
+ gencode (COpStmt results (StgFCallOp fcall _) args vols)
+  = ASSERT( null vols )
+    foreignCallCode (nonVoid results) fcall (nonVoid args)
 
- gencode (COpStmt results op args vols)
+ gencode (COpStmt results (StgPrimOp op) args vols)
   -- ToDo (ADR?): use that liveness mask
   | primOpNeedsWrapper op
   = let
-       saves = volsaves vols
+       saves    = volsaves vols
        restores = volrestores vols
     in
        p2stix (nonVoid results) op (nonVoid args)
@@ -387,9 +387,6 @@ Now the PrimOps, some of which may need caller-saves register wrappers.
        returnUs (\xs -> saves ++ code (restores ++ xs))
 
   | otherwise = p2stix (nonVoid results) op (nonVoid args)
-    where
-       nonVoid = filter ((/= VoidRep) . getAmodeRep)
-
 \end{code}
 
 Now the dreaded conditional jump.
@@ -464,6 +461,8 @@ Finally, all of the disgusting AbstractC macros.
 
  gencode other
   = pprPanic "AbsCStixGen.gencode" (dumpRealC other)
+
+ nonVoid = filter ((/= VoidRep) . getAmodeRep)
 \end{code}
 
 Here, we generate a jump table if there are more than four (integer)