X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FcoreSyn%2FCorePrep.lhs;h=fee95a588a156bb22f1c4f8b03d1d2fa93be67ba;hb=8a2809c29de9f23eba7ca682b48390033a9d40f6;hp=3b8f5778cd800354b78e520e5e9960d5328f27a0;hpb=49c98d143c382a1341e1046f5ca00819a25691ba;p=ghc-hetmet.git

diff --git a/compiler/coreSyn/CorePrep.lhs b/compiler/coreSyn/CorePrep.lhs
index 3b8f577..fee95a5 100644
--- a/compiler/coreSyn/CorePrep.lhs
+++ b/compiler/coreSyn/CorePrep.lhs
@@ -23,6 +23,7 @@ import Var
 import VarSet
 import VarEnv
 import Id
+import IdInfo
 import DataCon
 import PrimOp
 import BasicTypes
@@ -380,6 +381,12 @@ 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')