From patchwork Thu Nov  3 15:58:44 2011
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Subject: [trans-mem] document -fgnu-tm
From: Aldy Hernandez <aldyh@redhat.com>
X-Patchwork-Id: 123465
Message-Id: <4EB2BA34.9020907@redhat.com>
To: Richard Henderson <rth@redhat.com>, gcc-patches <gcc-patches@gcc.gnu.org>
Date: Thu, 03 Nov 2011 10:58:44 -0500

It seems we documented libitm, and forgot to document the main switch :).

OK for branch?
* doc/invoke.texi (C Dialect Options): Document -fgnu-tm.


Index: doc/invoke.texi
===================================================================
--- doc/invoke.texi	(revision 180772)
+++ doc/invoke.texi	(working copy)
@@ -1715,6 +1715,18 @@ Program Interface v3.0 @w{@uref{http://w
 implies @option{-pthread}, and thus is only supported on targets that
 have support for @option{-pthread}.
 
+@item -fgnu-tm
+@opindex fgnu-tm
+When the option @option{-fgnu-tm} is specified, the compiler will
+generate code for the Linux variant of Intel's current Transactional
+Memory ABI specification document (Revision 1.1, May 6 2009).  This is
+an experimental feature whose interface may change in future versions
+of GCC, as the official specification changes.  Please note that not
+all architectures are supported for this feature.
+
+For more information on GCC's support for transactional memory, see
+the accompanying documentation for @file{libitm}.
+
 @item -fms-extensions
 @opindex fms-extensions
 Accept some non-standard constructs used in Microsoft header files.