[project @ 2004-12-21 16:23:23 by simonpj]

Fix buglet in CSE

diff --git a/ghc/compiler/simplCore/CSE.lhs b/ghc/compiler/simplCore/CSE.lhs
index 9e40c57..14febd6 100644 (file)
--- a/ghc/compiler/simplCore/CSE.lhs
+++ b/ghc/compiler/simplCore/CSE.lhs
@@ -132,8 +132,8 @@ cseBinds env (b:bs) = (b':bs')
                      bs'        = cseBinds env1 bs
 
 cseBind :: CSEnv -> CoreBind -> (CSEnv, CoreBind)
-cseBind env (NonRec b e) = let (env', (_,e')) = do_one env (b, e)
-                          in (env', NonRec b e')
+cseBind env (NonRec b e) = let (env', (b',e')) = do_one env (b, e)
+                          in (env', NonRec b' e')
 cseBind env (Rec pairs)  = let (env', pairs') = mapAccumL do_one env pairs
                           in (env', Rec pairs')
                         
@@ -175,7 +175,6 @@ cseExpr env (Lam b e)                  = let (env', b') = addBinder env b
                                     in Lam b' (cseExpr env' e)
 cseExpr env (Let bind e)          = let (env', bind') = cseBind env bind
                                     in Let bind' (cseExpr env' e)
--- gaw 2004
 cseExpr env (Case scrut bndr ty alts) = Case scrut' bndr' ty (cseAlts env' scrut' bndr bndr' alts)
                                   where
                                     scrut' = tryForCSE env scrut