[project @ 2001-04-27 15:39:18 by sewardj]

[ghc-hetmet.git] / ghc / compiler / cprAnalysis / CprAnalyse.lhs

diff --git a/ghc/compiler/cprAnalysis/CprAnalyse.lhs b/ghc/compiler/cprAnalysis/CprAnalyse.lhs
index ecba677..760d142 100644 (file)
--- a/ghc/compiler/cprAnalysis/CprAnalyse.lhs
+++ b/ghc/compiler/cprAnalysis/CprAnalyse.lhs
@@ -11,7 +11,7 @@ import CoreLint               ( showPass, endPass )
 import CoreSyn
 import CoreUtils       ( exprIsValue )
 import Id               ( Id, setIdCprInfo, idCprInfo, idArity,
-                         isBottomingId, idDemandInfo )
+                         isBottomingId, idDemandInfo, isImplicitId )
 import IdInfo           ( CprInfo(..) )
 import Demand          ( isStrict )
 import VarEnv
@@ -155,6 +155,9 @@ with ids decorated with their CPR info.
 -- Return environment extended with info from this binding 
 cprAnalBind :: CPREnv -> CoreBind -> (CPREnv, CoreBind)
 cprAnalBind rho (NonRec b e) 
+  | isImplicitId b     -- Don't touch the CPR info on constructors, selectors etc
+  = (rho, NonRec b e)  
+  | otherwise
   = (extendVarEnv rho b absval, NonRec b' e')
   where
     (e', absval) = cprAnalExpr rho e