[commit: ghc] master: users guide: Note improved constant folding in 8.6 release notes (09128f3)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/09128f3a3d754abcef63480bc7e2e901d30b155a/ghc

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commit 09128f3a3d754abcef63480bc7e2e901d30b155a
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Fri Apr 13 18:10:39 2018 -0400

    users guide: Note improved constant folding in 8.6 release notes


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09128f3a3d754abcef63480bc7e2e901d30b155a
 docs/users_guide/8.6.1-notes.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/users_guide/8.6.1-notes.rst b/docs/users_guide/8.6.1-notes.rst
index 74bf929..996fb17 100644
--- a/docs/users_guide/8.6.1-notes.rst
+++ b/docs/users_guide/8.6.1-notes.rst
@@ -79,6 +79,10 @@ Compiler
 
 - GHC now supports British spelling of :extension:`GeneralizedNewtypeDeriving`.
 
+- GHC now does significantly more constant folding in its core-to-core optimiser.
+  This will result in significantly better code being generated for some
+  programs. See :ghc-ticket:`9136`.
+
 - The code-generation effects of :ghc-flag:`-dynamic` can now be
   enabled independently by the flag
   :ghc-flag:`-fexternal-dynamic-refs`. If you don't know why you might