Add LANGUAGE pragmas to compiler/ source files

In some cases, the layout of the LANGUAGE/OPTIONS_GHC lines has been
reorganized, while following the convention, to

- place `{-# LANGUAGE #-}` pragmas at the top of the source file, before
  any `{-# OPTIONS_GHC #-}`-lines.

- Moreover, if the list of language extensions fit into a single
  `{-# LANGUAGE ... -#}`-line (shorter than 80 characters), keep it on one
  line. Otherwise split into `{-# LANGUAGE ... -#}`-lines for each
  individual language extension. In both cases, try to keep the
  enumeration alphabetically ordered.
  (The latter layout is preferable as it's more diff-friendly)

While at it, this also replaces obsolete `{-# OPTIONS ... #-}` pragma
occurences by `{-# OPTIONS_GHC ... #-}` pragmas.

3 files changed, 6 insertions, 0 deletions

diff --git a/compiler/specialise/Rules.lhs b/compiler/specialise/Rules.lhs
index 70fc09a2ef..2abf7fbdca 100644
--- a/compiler/specialise/Rules.lhs
+++ b/compiler/specialise/Rules.lhs
@@ -4,6 +4,8 @@
 \section[CoreRules]{Transformation rules}
 
 \begin{code}
+{-# LANGUAGE CPP #-}
+
 -- | Functions for collecting together and applying rewrite rules to a module.
 -- The 'CoreRule' datatype itself is declared elsewhere.
 module Rules (
diff --git a/compiler/specialise/SpecConstr.lhs b/compiler/specialise/SpecConstr.lhs
index 9df460edde..24820eba40 100644
--- a/compiler/specialise/SpecConstr.lhs
+++ b/compiler/specialise/SpecConstr.lhs
@@ -9,6 +9,8 @@ ToDo [Oct 2013]
 \section[SpecConstr]{Specialise over constructors}
 
 \begin{code}
+{-# LANGUAGE CPP #-}
+
 module SpecConstr(
         specConstrProgram
 #ifdef GHCI
diff --git a/compiler/specialise/Specialise.lhs b/compiler/specialise/Specialise.lhs
index 3191ae946e..baa5d1971f 100644
--- a/compiler/specialise/Specialise.lhs
+++ b/compiler/specialise/Specialise.lhs
@@ -4,6 +4,8 @@
 \section[Specialise]{Stamping out overloading, and (optionally) polymorphism}
 
 \begin{code}
+{-# LANGUAGE CPP #-}
+
 module Specialise ( specProgram ) where
 
 #include "HsVersions.h"