X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FcodeGen%2FCgInfoTbls.hs;h=14004ceef88ee21532bcc9892ab4512d7da4cac3;hb=4c6a3f787abcaed009a574196d82237d9ae64fc8;hp=4e38485455089b7eed2d00f3df406744d2943555;hpb=48fb2b521898998a17873ad6cf30610aa5ab6db3;p=ghc-hetmet.git

diff --git a/compiler/codeGen/CgInfoTbls.hs b/compiler/codeGen/CgInfoTbls.hs
index 4e384854..14004ce 100644
--- a/compiler/codeGen/CgInfoTbls.hs
+++ b/compiler/codeGen/CgInfoTbls.hs
@@ -1,3 +1,10 @@
+{-# OPTIONS -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
+
 -----------------------------------------------------------------------------
 --
 -- Building info tables.
@@ -15,6 +22,7 @@ module CgInfoTbls (
 	stdInfoTableSizeB,
 	entryCode, closureInfoPtr,
 	getConstrTag,
+        cmmGetClosureType,
 	infoTable, infoTableClosureType,
 	infoTablePtrs, infoTableNonPtrs,
 	funInfoTable, makeRelativeRefTo
@@ -56,7 +64,7 @@ import Outputable
 -- representation as a list of 'CmmAddr' is handled later
 -- in the pipeline by 'cmmToRawCmm'.
 
-emitClosureCodeAndInfoTable :: ClosureInfo -> CmmFormals -> CgStmts -> Code
+emitClosureCodeAndInfoTable :: ClosureInfo -> CmmFormalsWithoutKinds -> CgStmts -> Code
 emitClosureCodeAndInfoTable cl_info args body
  = do	{ blks <- cgStmtsToBlocks body
         ; info <- mkCmmInfo cl_info
@@ -73,13 +81,11 @@ dataConTagZ con = dataConTag con - fIRST_TAG
 -- Not used for return points.  (The 'smRepClosureTypeInt' call would panic.)
 mkCmmInfo :: ClosureInfo -> FCode CmmInfo
 mkCmmInfo cl_info = do
-  prof <- 
-      if opt_SccProfilingOn 
+  prof <-
+      if opt_SccProfilingOn
       then do ty_descr_lit <- mkStringCLit (closureTypeDescr cl_info)
               cl_descr_lit <- mkStringCLit (closureValDescr cl_info)
-              return $ ProfilingInfo
-                         (makeRelativeRefTo info_lbl ty_descr_lit)
-                         (makeRelativeRefTo info_lbl cl_descr_lit)
+              return $ ProfilingInfo ty_descr_lit cl_descr_lit
       else return $ ProfilingInfo (mkIntCLit 0) (mkIntCLit 0)
 
   case cl_info of
@@ -233,8 +239,8 @@ stack_layout ((off, bind):binds) sizeW | off == sizeW - 1 =
     unique = getUnique (cgIdInfoId bind)
     machRep = argMachRep (cgIdInfoArgRep bind)
     kind = if isFollowableArg (cgIdInfoArgRep bind)
-           then KindPtr
-           else KindNonPtr
+           then GCKindPtr
+           else GCKindNonPtr
 stack_layout binds@((off, _):_) sizeW | otherwise =
   Nothing : (stack_layout binds (sizeW - 1))
 
@@ -260,8 +266,8 @@ stack_layout offsets sizeW = result
         unique = getUnique (cgIdInfoId x)
         machRep = argMachrep (cgIdInfoArgRep bind)
         kind = if isFollowableArg (cgIdInfoArgRep bind)
-           then KindPtr
-           else KindNonPtr
+           then GCKindPtr
+           else GCKindNonPtr
 -}
 
 emitAlgReturnTarget
@@ -273,14 +279,24 @@ emitAlgReturnTarget
 
 emitAlgReturnTarget name branches mb_deflt fam_sz
   = do  { blks <- getCgStmts $
-		    emitSwitch tag_expr branches mb_deflt 0 (fam_sz - 1)
-		-- NB: tag_expr is zero-based
+                    -- is the constructor tag in the node reg?
+                    if isSmallFamily fam_sz
+                        then do -- yes, node has constr. tag
+                          let tag_expr = cmmConstrTag1 (CmmReg nodeReg)
+                              branches' = [(tag+1,branch)|(tag,branch)<-branches]
+                          emitSwitch tag_expr branches' mb_deflt 1 fam_sz
+                        else do -- no, get tag from info table
+                          let -- Note that ptr _always_ has tag 1
+                              -- when the family size is big enough
+                              untagged_ptr = cmmRegOffB nodeReg (-1)
+                              tag_expr = getConstrTag (untagged_ptr)
+                          emitSwitch tag_expr branches mb_deflt 0 (fam_sz - 1)
 	; lbl <- emitReturnTarget name blks
 	; return (lbl, Nothing) }
 		-- Nothing: the internal branches in the switch don't have
 		-- global labels, so we can't use them at the 'call site'
   where
-    tag_expr = getConstrTag (CmmReg nodeReg)
+    uniq = getUnique name 
 
 --------------------------------
 emitReturnInstr :: Code
@@ -346,6 +362,14 @@ getConstrTag closure_ptr
   where
     info_table = infoTable (closureInfoPtr closure_ptr)
 
+cmmGetClosureType :: CmmExpr -> CmmExpr
+-- Takes a closure pointer, and return the closure type
+-- obtained from the info table
+cmmGetClosureType closure_ptr 
+  = CmmMachOp (MO_U_Conv halfWordRep wordRep) [infoTableClosureType info_table]
+  where
+    info_table = infoTable (closureInfoPtr closure_ptr)
+
 infoTable :: CmmExpr -> CmmExpr
 -- Takes an info pointer (the first word of a closure)
 -- and returns a pointer to the first word of the standard-form
@@ -403,7 +427,7 @@ funInfoTable info_ptr
 emitInfoTableAndCode 
 	:: CLabel 		-- Label of entry or ret
 	-> CmmInfo 		-- ...the info table
-	-> CmmFormals		-- ...args
+	-> CmmFormalsWithoutKinds		-- ...args
 	-> [CmmBasicBlock]	-- ...and body
 	-> Code