X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FDEPEND-NOTES;h=fb966c66b78fd2b49bb4422780d862f8d3c930a2;hb=6246213687602d5bd9b4f12026fd300dfa4b4afd;hp=c1b64f3afb16d6a377f7df4287c1ab7d026416a7;hpb=438596897ebbe25a07e1c82085cfbc5bdb00f09e;p=ghc-hetmet.git

diff --git a/ghc/compiler/DEPEND-NOTES b/ghc/compiler/DEPEND-NOTES
index c1b64f3..fb966c6 100644
--- a/ghc/compiler/DEPEND-NOTES
+++ b/ghc/compiler/DEPEND-NOTES
@@ -1,106 +1,53 @@
-ToDo
-~~~~
-* Test effect of eta-expanding past (case x of ..)
-
-* Bottom strictness isn't right.  Should be (eg) SSX, not just X.
-
-* Enumeration types in worker/wrapper for strictness analysis
-
-* Use (!) types in data cons to unbox.
-
-* Check constant folding
-
-* .hi file isn't updated if the only change is to the exports.
-  For example, UgenAll.lhs re-exports all of U_binding.hs; when a data type
-  decl in the latter changes, the .hi file for the former isn't updated.
-  I think this happens when a module exports another mdodule thus:
-
-	module UgenAll( module U_binding, ... ) where
-
-* This should be reported as an error:
-	data T k = MkT (k Int#)
-
-* Bogus report of overlapped pattern for
-	f (R {field = [c]}) = 1
-  	f (R {})	      = 2
-  This shows up for TyCon.maybeTyConSingleCon
-
-*  > module Main( main ) where
-
-   > f :: String -> Int
-   > f "=<" = 0
-   > f "="  = 0
-   
-   > g :: [Char] -> Int
-   > g ['=','<'] = 0
-   > g ['=']     = 0
-   
-   > main = return ()
-   
-   For ``f'' the following is reported.
-   
-   tmp.lhs:4: 
-    Pattern match(es) are overlapped in the definition of function `f'
-            "=" = ...
-
-   There are no complaints for definition for ``g''.
-
-* Without -O I don't think we need change the module version
-  if the usages change; I forget why it changes even with -O
-
-* Record selectors for existential type; no good!  What to do?
-  Record update doesn't make sense either.
-
-  Need to be careful when figuring out strictness, and when generating
-  worker-wrapper split.
-
-  Also when deriving.
-
-* Consructor re-use via CSE
-
 		Notes on module dependencies
 		~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The Name/Var/Type group is a bit complicated. Here's the deal
+Things in brackets are what the module *uses*.
+A 'loop' indicates a use from a module compiled later
 
-	Name, PrimRep, FieldLabel (uses Type.Type)
+	Name, PrimRep 
 then
-	Var (uses Const.Con, IdInfo.IdInfo, Type.GenType, Type.Kind)
+	PrelNames
 then
-	VarEnv, VarSet
+	Var (Name, loop IdInfo.IdInfo, 
+	     loop Type.Type, loop Type.Kind)
 then
-	Class (uses TyCon.TyCon, Type.Type, SpecEnv.SpecEnv)
+	VarEnv, VarSet, ThinAir
 then
-	TyCon (uses Type.Type, Type.Kind, DataCon.DataCon)
+	Class (loop TyCon.TyCon, loop Type.Type)
 then
-	Type (uses [DataCon.DataCon])
+	TyCon (loop Type.Type, loop Type.Kind, loop DataCon.DataCon, loop Generics.GenInfo)
 then
-	DataCon, TysPrim, Unify, SpecEnv, PprType
+	Type (loop DataCon.DataCon, loop Subst.substTy)
 then
-	IdInfo, TysWiredIn (uses DataCon.mkDataCon, [MkId.mkDataConId])
+	FieldLabel( Type), TysPrim (Type), PprEnv (loop DataCon.DataCon, Type)
 then
-	PrimOp (uses PprType, TysWiredIn)
+	Unify, PprType (PprEnv)
 then
-	Const (needs PrimOp, [TysWiredIn.stringTy])
+	Literal (TysPrim, PprType), DataCon (PprType)
 then
-	Id (needs Const.Con(..)), CoreSyn
+	TysWiredIn (DataCon.mkDataCon, loop MkId.mkDataConId, loop Generics.mkGenInfo)
 then
-	CoreUtils, OccurAnal
+	PrimOp (PprType, TysWiredIn)
 then
-	CoreUnfold (uses OccurAnal)
+	CoreSyn
 then
-	MkId (uses CoreUnfold)
-	
-
-PrimOp uses TysWiredIn
-
-
-Add
-~~~
-basicTypes/DataCon.lhs
-basicTypes/DataCon.hi-boot
+	IdInfo (CoreSyn.Unfolding, CoreSyn.CoreRules)
+then
+	Id (lots from IdInfo)
+then
+	CoreFVs, PprCore
+then
+	CoreUtils (PprCore.pprCoreExpr, CoreFVs.exprFreeVars,
+		   CoreSyn.isEvaldUnfolding CoreSyn.maybeUnfoldingTemplate)
+then	
+	OccurAnal (CoreUtils.exprIsTrivial)
+then
+	CoreUnfold (OccurAnal.occurAnalyseGlobalExpr)
+then
+	Rules (Unfolding), Subst (Unfolding, CoreFVs), CoreTidy (noUnfolding), Generics (mkTopUnfolding)
+then
+	MkId (CoreUnfold.mkUnfolding, Subst)
+then
+	PrelInfo (MkId)
 
-Remove
-~~~~~~
-specialise/SpecUtils.lhs
-basicTypes/IdUtils.lhs