[Git][ghc/ghc][master] GHC.Hs.Instances: Compile with -O0

[Marge Bot]

 Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC


Commits:
6735b9d9 by Ben Gamari at 2020-06-04T04:37:21-04:00
GHC.Hs.Instances: Compile with -O0

This module contains exclusively Data instances, which are going to be
slow no matter what we do. Furthermore, they are incredibly slow to
compile with optimisation (see #9557). Consequently we compile this with
-O0.  See #18254.

- - - - -


1 changed file:

- compiler/GHC/Hs/Instances.hs


Changes:

=====================================
compiler/GHC/Hs/Instances.hs
=====================================
@@ -5,6 +5,13 @@
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE UndecidableInstances #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}
+
+-- This module contains exclusively Data instances, which are going to be slow
+-- no matter what we do. Furthermore, they are incredibly slow to compile with
+-- optimisation (see #9557). Consequently we compile this with -O0.
+-- See #18254.
+{-# OPTIONS_GHC -O0 #-}
+
 module GHC.Hs.Instances where
 
 -- This module defines the Data instances for the hsSyn AST.



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/6735b9d94605b4c7f75e70339bfaa4207f23e52b

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/6735b9d94605b4c7f75e70339bfaa4207f23e52b
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