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-rw-r--r--compiler/utils/Encoding.hs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/utils/Encoding.hs b/compiler/utils/Encoding.hs
index f2659e6a9a..c790f386a4 100644
--- a/compiler/utils/Encoding.hs
+++ b/compiler/utils/Encoding.hs
@@ -1,3 +1,7 @@
+{-# OPTIONS_GHC -O #-}
+-- We always optimise this, otherwise performance of a non-optimised
+-- compiler is severely affected
+
-- -----------------------------------------------------------------------------
--
-- (c) The University of Glasgow, 1997-2006