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-rw-r--r--compiler/stgSyn/CoreToStg.lhs7
1 files changed, 2 insertions, 5 deletions
diff --git a/compiler/stgSyn/CoreToStg.lhs b/compiler/stgSyn/CoreToStg.lhs
index 529de774e7..d03412ad3d 100644
--- a/compiler/stgSyn/CoreToStg.lhs
+++ b/compiler/stgSyn/CoreToStg.lhs
@@ -39,6 +39,7 @@ import StaticFlags ( opt_RuntimeTypes )
import Module
import Outputable
import MonadUtils
+import Util
\end{code}
%************************************************************************
@@ -636,16 +637,12 @@ coreToStgLet let_no_escape bind body = do
no_binder_escapes = isEmptyVarSet (set_of_binders `intersectVarSet` all_escs)
-#ifdef DEBUG
-- Debugging code as requested by Andrew Kennedy
checked_no_binder_escapes
- | not no_binder_escapes && any is_join_var binders
+ | debugIsOn && not no_binder_escapes && any is_join_var binders
= pprTrace "Interesting! A join var that isn't let-no-escaped" (ppr binders)
False
| otherwise = no_binder_escapes
-#else
- checked_no_binder_escapes = no_binder_escapes
-#endif
-- Mustn't depend on the passed-in let_no_escape flag, since
-- no_binder_escapes is used by the caller to derive the flag!