Add {-# OPTIONS_GHC -w #-} and some blurb to all compiler modules

[ghc-hetmet.git] / compiler / coreSyn / CorePrep.lhs

diff --git a/compiler/coreSyn/CorePrep.lhs b/compiler/coreSyn/CorePrep.lhs
index 3b8f577..049960f 100644 (file)
--- a/compiler/coreSyn/CorePrep.lhs
+++ b/compiler/coreSyn/CorePrep.lhs
@@ -5,6 +5,13 @@
 Core pass to saturate constructors and PrimOps
 
 \begin{code}
+{-# OPTIONS_GHC -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/WorkingConventions#Warnings
+-- for details
+
 module CorePrep (
       corePrepPgm, corePrepExpr
   ) where
@@ -23,6 +30,7 @@ import Var
 import VarSet
 import VarEnv
 import Id
+import IdInfo
 import DataCon
 import PrimOp
 import BasicTypes
@@ -380,6 +388,12 @@ corePrepExprFloat env (Note n@(SCC _) expr)
     deLamFloat expr1                   `thenUs` \ (floats, expr2) ->
     returnUs (floats, Note n expr2)
 
+corePrepExprFloat env (Case (Var id) bndr ty [(DEFAULT,[],expr)])
+  | Just (TickBox {}) <- isTickBoxOp_maybe id
+  = corePrepAnExpr env expr            `thenUs` \ expr1 ->
+    deLamFloat expr1                   `thenUs` \ (floats, expr2) ->
+    return (floats, Case (Var id) bndr ty [(DEFAULT,[],expr2)])
+
 corePrepExprFloat env (Note other_note expr)
   = corePrepExprFloat env expr         `thenUs` \ (floats, expr') ->
     returnUs (floats, Note other_note expr')