Update references to Discourse instead of the mailing lists.

Update the references to the old Mailman mailing lists to point to Discourse forums.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D128766

clang/docs/ExternalClangExamples.rst

@@ -18,9 +18,9 @@ where Clang is used are:
 - Static analysis.
 - Documentation/cross-reference generation.
 
-If you know of (or wrote!) a tool or project using Clang, please send an
+If you know of (or wrote!) a tool or project using Clang, please post on 
-email to Clang's `development discussion mailing list
+`the Discourse forums (Clang Frontend category)
-<https://lists.llvm.org/mailman/listinfo/cfe-dev>`_ to have it added.
+<https://discourse.llvm.org/c/clang/6>`_ to have it added.
 (or if you are already a Clang contributor, feel free to directly commit
 additions). Since the primary purpose of this page is to provide examples
 that can help developers, generally they must have code available.

clang/docs/InternalsManual.rst

@@ -537,7 +537,7 @@ token.  This concept maps directly to the "spelling location" for the token.
 ``SourceRange`` and ``CharSourceRange``
 ---------------------------------------
 
-.. mostly taken from https://lists.llvm.org/pipermail/cfe-dev/2010-August/010595.html
+.. mostly taken from https://discourse.llvm.org/t/code-ranges-of-tokens-ast-elements/16893/2
 
 Clang represents most source ranges by [first, last], where "first" and "last"
 each point to the beginning of their respective tokens.  For example consider

clang/docs/OpenCLSupport.rst

@@ -408,8 +408,8 @@ Experimental features
 
 Clang provides the following new WIP features for the developers to experiment
 and provide early feedback or contribute with further improvements.
-Feel free to contact us on `cfe-dev
+Feel free to contact us on `the Discourse forums (Clang Frontend category)
-<https://lists.llvm.org/mailman/listinfo/cfe-dev>`_ or file `a GitHub issue
+<https://discourse.llvm.org/c/clang/6>`_ or file `a GitHub issue
 <https://github.com/llvm/llvm-project/issues/new>`_.
 
 .. _opencl_experimental_cxxlibs:

clang/docs/OpenMPSupport.rst

@@ -110,8 +110,9 @@ OpenMP 5.0 Implementation Details
 =================================
 
 The following table provides a quick overview over various OpenMP 5.0 features
-and their implementation status. Please contact *openmp-dev* at
+and their implementation status. Please post on the
-*lists.llvm.org* for more information or if you want to help with the
+`Discourse forums (Runtimes - OpenMP category)`_ for more 
+information or if you want to help with the
 implementation.
 
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
@@ -256,8 +257,10 @@ OpenMP 5.1 Implementation Details
 
 The following table provides a quick overview over various OpenMP 5.1 features
 and their implementation status, as defined in the technical report 8 (TR8).
-Please contact *openmp-dev* at *lists.llvm.org* for more information or if you
+Please post on the 
-want to help with the implementation.
+`Discourse forums (Runtimes - OpenMP category)`_ for more 
+information or if you want to help with the
+implementation.
 
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 |Category                      | Feature                                                      | Status                   | Reviews                                                               |
@@ -366,8 +369,8 @@ The following table provides a quick overview over various OpenMP
 extensions and their implementation status.  These extensions are not
 currently defined by any standard, so links to associated LLVM
 documentation are provided.  As these extensions mature, they will be
-considered for standardization.  Please contact *openmp-dev* at
+considered for standardization. Please post on the
-*lists.llvm.org* to provide feedback.
+`Discourse forums (Runtimes - OpenMP category)`_ to provide feedback. 
 
 +------------------------------+-----------------------------------------------------------------------------------+--------------------------+--------------------------------------------------------+
 |Category                      | Feature                                                                           | Status                   | Reviews                                                |
@@ -378,3 +381,5 @@ considered for standardization.  Please contact *openmp-dev* at
 | device extension             | `'ompx_hold' map type modifier                                                    | :good:`prototyped`       | D106509, D106510                                       |
 |                              | <https://openmp.llvm.org/docs/openacc/OpenMPExtensions.html#ompx-hold>`_          |                          |                                                        |
 +------------------------------+-----------------------------------------------------------------------------------+--------------------------+--------------------------------------------------------+
+
+.. _Discourse forums (Runtimes - OpenMP category): https://discourse.llvm.org/c/runtimes/openmp/35

clang/docs/ReleaseNotes.rst

@@ -675,5 +675,5 @@ this release by going into the "``clang/docs/``" directory in the Clang
 tree.
 
 If you have any questions or comments about Clang, please feel free to
-contact us via the `mailing
+contact us on the Discourse forums (Clang Frontend category)
-list <https://lists.llvm.org/mailman/listinfo/cfe-dev>`_.
+<https://discourse.llvm.org/c/clang/6>`_.

clang/www/get_involved.html

@@ -28,41 +28,28 @@ to author patches.
 
 <h2>Follow what's going on</h2>
 
-<p>Clang is a subproject of the <a href="https://llvm.org">LLVM Project</a>, but
+<p>Clang is a subproject of the <a href="https://llvm.org">LLVM Project</a>
-has its own mailing lists because the communities have people with different
+and has a Discourse forum and mailing list:</p>
-interests.  The two clang lists are:</p>
 
 <ul>
 <li><a href="https://lists.llvm.org/mailman/listinfo/cfe-commits">cfe-commits
 </a> - This list is for patch submission/discussion.</li>
 
-<li><a href="https://lists.llvm.org/mailman/listinfo/cfe-dev">cfe-dev</a> -
+<li><a href="https://discourse.llvm.org/c/clang/6">Clang Frontend Discourse forum</a> -
-This list is for everything else Clang related (questions and answers, design
+This forum is for everything else Clang related (questions and answers, design
 discussions, etc).</li>
 
 </ul>
 
-<p>If you are interested in clang only, these two lists should be all
-you need.  If you are interested in the LLVM optimizer and code generator,
-please consider signing up for <a
-href="https://lists.llvm.org/mailman/listinfo/llvm-dev">llvm-dev</a> and <a
-href="https://lists.llvm.org/mailman/listinfo/llvm-commits">llvm-commits</a>
-as well.</p>
-
-
 <p>The most common way to talk with other developers on the project is through
-the <a href="https://lists.llvm.org/mailman/listinfo/cfe-dev">cfe-dev mailing
+the <a href="https://discourse.llvm.org/c/clang/6">Clang Frontend Discourse forum
-list</a>.  The clang mailing list is a very friendly place and we welcome
+</a>.  The clang forum is a very friendly place and we welcome
-newcomers.  In addition to the cfe-dev list, a significant amount of design
+newcomers.  In addition to the forum, a significant amount of design
 discussion takes place on the <a
 href="https://lists.llvm.org/mailman/listinfo/cfe-commits">cfe-commits mailing
 list</a>.  All of these lists have archives, so you can browse through previous
 discussions or follow the list development on the web if you prefer.</p>
 
-<p>You can also follow the <a href="http://planet.clang.org/">Planet Clang</a>
-community news feed which offers a window into the world, work and lives of
-Clang developers, contributors and the standards they implement.</p>
-
 <p>If you're looking for something to work on, check out our <a
 href="OpenProjects.html">Open Projects</a> page or look through the <a
 href="https://github.com/llvm/llvm-project/issues/">LLVM bug tracker</a>.</p>