diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c4ec10c521f72e6764699bfb8ecfcffd0f1c6cbe..f9b467d70fab64876013419a3895ab9508bc172d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-11-26  Hans-Peter Nilsson  <hp@axis.com>
+
+	* doc/md.texi (Insn Canonicalizations): Refer to the
+	function commutative_operand_precedence for further rules.
+
 2005-11-25  Roger Sayle  <roger@eyesopen.com>
 
 	PR middle-end/21309
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index 54ad659cb5bf3434af569c57bac4c2c214413b75..5bbeaa05b38eb27a8a338598432c191ae76a4e26 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -4785,6 +4785,9 @@ will be written using @code{zero_extract} rather than the equivalent
 
 @end itemize
 
+Further canonicalization rules are defined in the function
+@code{commutative_operand_precedence} in @file{gcc/rtlanal.c}.
+
 @end ifset
 @ifset INTERNALS
 @node Expander Definitions