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gerrit-public.fairphone.software / toolchain / llvm-project / d02f3e96736ed9b9b4fbc60d1fd377b009a8819c / . / clang / docs / ReleaseNotes.rst
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Hans Wennborg60d06bf2016-07-18 18:05:19 +0000[diff] [blame]1=======================================
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]2Clang 7.0.0 (In-Progress) Release Notes
Hans Wennborg60d06bf2016-07-18 18:05:19 +0000[diff] [blame]3=======================================
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]4
5.. contents::
6 :local:
7 :depth: 2
8
9Written by the `LLVM Team <http://llvm.org/>`_
10
11.. warning::
12
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]13 These are in-progress notes for the upcoming Clang 7 release.
Hans Wennborg189f1f32017-02-09 23:26:34 +0000[diff] [blame]14 Release notes for previous releases can be found on
15 `the Download Page <http://releases.llvm.org/download.html>`_.
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]16
17Introduction
18============
19
20This document contains the release notes for the Clang C/C++/Objective-C
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]21frontend, part of the LLVM Compiler Infrastructure, release 7.0.0. Here we
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]22describe the status of Clang in some detail, including major
23improvements from the previous release and new feature work. For the
24general LLVM release notes, see `the LLVM
25documentation <http://llvm.org/docs/ReleaseNotes.html>`_. All LLVM
26releases may be downloaded from the `LLVM releases web
27site <http://llvm.org/releases/>`_.
28
Hans Wennborgd878ca82017-08-30 18:35:44 +0000[diff] [blame]29For more information about Clang or LLVM, including information about the
30latest release, please see the `Clang Web Site <http://clang.llvm.org>`_ or the
31`LLVM Web Site <http://llvm.org>`_.
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]32
33Note that if you are reading this file from a Subversion checkout or the
34main Clang web page, this document applies to the *next* release, not
35the current one. To see the release notes for a specific release, please
36see the `releases page <http://llvm.org/releases/>`_.
37
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]38What's New in Clang 7.0.0?
Hans Wennborg60d06bf2016-07-18 18:05:19 +0000[diff] [blame]39==========================
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]40
41Some of the major new features and improvements to Clang are listed
42here. Generic improvements to Clang as a whole or to its underlying
43infrastructure are described first, followed by language-specific
44sections with improvements to Clang's support for those languages.
45
46Major New Features
47------------------
48
Hans Wennborg60d06bf2016-07-18 18:05:19 +0000[diff] [blame]49- ...
Rafael Espindola34970692013-12-12 16:07:11 +0000[diff] [blame]50
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]51Improvements to Clang's diagnostics
52^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
53
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]54- ...
Roman Lebedev809df342017-10-26 13:18:14 +0000[diff] [blame]55
Erich Keaneb0c78092017-07-26 18:04:45 +0000[diff] [blame]56Non-comprehensive list of changes in this release
57-------------------------------------------------
58
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]59- ...
Alex Lorenzd8ec4312017-12-14 19:22:02 +0000[diff] [blame]60
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]61New Compiler Flags
62------------------
63
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]64- ...
Aaron Ballman2b3bc4c2017-10-21 16:45:08 +0000[diff] [blame]65
Joerg Sonnenbergerc9199682017-07-01 21:36:21 +0000[diff] [blame]66Deprecated Compiler Flags
67-------------------------
68
69The following options are deprecated and ignored. They will be removed in
70future versions of Clang.
71
Hans Wennborgfbb21e02017-07-19 14:14:07 +0000[diff] [blame]72- ...
Joerg Sonnenbergerc9199682017-07-01 21:36:21 +0000[diff] [blame]73
Yuka Takahashiba900ab2018-03-07 11:34:02 +0000[diff] [blame]74Modified Compiler Flags
75-----------------------
76
Eugene Zelenkod02f3e92018-03-08 01:37:39 +0000[diff] [blame^]77- Before Clang 7.0, we prepended the `#` character to the `--autocomplete`
78 argument to enable cc1 flags. For example, when the `-cc1` or `-Xclang` flag
79 is in the :program:`clang` invocation, the shell executed
80 `clang --autocomplete=#-<flag to be completed>`. Clang 7.0 now requires the
81 whole invocation including all flags to be passed to the `--autocomplete` like
82 this: `clang --autocomplete=-cc1,-xc++,-fsyn`.
Yuka Takahashiba900ab2018-03-07 11:34:02 +0000[diff] [blame]83
Tyler Nowickidb2668a2014-06-18 00:51:32 +0000[diff] [blame]84New Pragmas in Clang
85-----------------------
86
Rafael Espindolaaf742502014-08-22 21:59:11 +0000[diff] [blame]87Clang now supports the ...
Mark Heffernanbd26f5e2014-07-21 18:08:34 +0000[diff] [blame]88
Paul Robinsonf9ede1c2016-07-18 17:19:12 +0000[diff] [blame]89
90Attribute Changes in Clang
91--------------------------
92
Erich Keaneace10a22018-01-08 23:36:29 +0000[diff] [blame]93- Clang now supports function multiversioning with attribute 'target' on ELF
94 based x86/x86-64 environments by using indirect functions. This implementation
95 has a few minor limitations over the GCC implementation for the sake of AST
96 sanity, however it is otherwise compatible with existing code using this
97 feature for GCC. Consult the documentation for the target attribute for more
98 information.
Eugene Zelenkod02f3e92018-03-08 01:37:39 +0000[diff] [blame^]99
Hans Wennborgfbb21e02017-07-19 14:14:07 +0000[diff] [blame]100- ...
Paul Robinsonf9ede1c2016-07-18 17:19:12 +0000[diff] [blame]101
Hans Wennborg02dc0002014-08-05 00:21:23 +0000[diff] [blame]102Windows Support
103---------------
104
Rafael Espindolaaf742502014-08-22 21:59:11 +0000[diff] [blame]105Clang's support for building native Windows programs ...
Hans Wennborg02dc0002014-08-05 00:21:23 +0000[diff] [blame]106
107
Renato Golinf2fcddb2013-12-13 09:27:34 +0000[diff] [blame]108C Language Changes in Clang
109---------------------------
110
Hans Wennborg60d06bf2016-07-18 18:05:19 +0000[diff] [blame]111- ...
Pirama Arumuga Nainarc85c8532016-06-21 16:09:30 +0000[diff] [blame]112
Renato Golinf2fcddb2013-12-13 09:27:34 +0000[diff] [blame]113...
114
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]115C11 Feature Support
116^^^^^^^^^^^^^^^^^^^
117
118...
119
120C++ Language Changes in Clang
121-----------------------------
122
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]123- ...
Richard Smith8eb53c82016-05-05 18:40:37 +0000[diff] [blame]124
125C++1z Feature Support
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]126^^^^^^^^^^^^^^^^^^^^^
127
128...
129
130Objective-C Language Changes in Clang
131-------------------------------------
132
133...
134
Erik Schnetter489700d2013-11-11 06:36:33 +0000[diff] [blame]135OpenCL C Language Changes in Clang
136----------------------------------
137
Bill Wendling0a794a4b2013-11-20 10:13:37 +0000[diff] [blame]138...
Erik Schnetter489700d2013-11-11 06:36:33 +0000[diff] [blame]139
Alexey Bataev44b67502016-05-31 11:17:08 +0000[diff] [blame]140OpenMP Support in Clang
141----------------------------------
142
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]143- ...
Alexey Bataev44b67502016-05-31 11:17:08 +0000[diff] [blame]144
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]145Internal API Changes
146--------------------
147
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]148These are major API changes that have happened since the 6.0.0 release of
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]149Clang. If upgrading an external codebase that uses Clang as a library,
150this section should help get you past the largest hurdles of upgrading.
151
Vedant Kumar5fb00e42016-07-27 23:01:55 +0000[diff] [blame]152- ...
Richard Smitha0334a92015-05-14 00:22:12 +0000[diff] [blame]153
Aaron Ballmancdc43af2015-09-17 13:47:22 +0000[diff] [blame]154AST Matchers
155------------
Aaron Ballmancdc43af2015-09-17 13:47:22 +0000[diff] [blame]156
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]157- ...
Sylvestre Ledru72e3fa72017-03-14 09:43:55 +0000[diff] [blame]158
159clang-format
160------------
161
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]162- ...
Sylvestre Ledruc9410392017-12-05 09:23:47 +0000[diff] [blame]163
Ted Kremenek3a2291b2013-04-24 07:33:52 +0000[diff] [blame]164libclang
165--------
166
Bill Wendling61f44cc2013-06-04 06:17:46 +0000[diff] [blame]167...
Ted Kremenek3a2291b2013-04-24 07:33:52 +0000[diff] [blame]168
Sylvestre Ledruea49d3a2016-08-06 20:23:54 +0000[diff] [blame]169
Anna Zaksb6219a92013-04-25 23:14:38 +0000[diff] [blame]170Static Analyzer
Ted Kremenek004e8232013-04-26 00:01:34 +0000[diff] [blame]171---------------
Anna Zaksb6219a92013-04-25 23:14:38 +0000[diff] [blame]172
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]173- ...
Roman Lebedev88b56ca2017-11-30 09:18:35 +0000[diff] [blame]174
Bill Wendling0a794a4b2013-11-20 10:13:37 +0000[diff] [blame]175...
Ted Kremenek004e8232013-04-26 00:01:34 +0000[diff] [blame]176
Vedant Kumar840c2c72017-06-13 02:52:31 +0000[diff] [blame]177Undefined Behavior Sanitizer (UBSan)
178------------------------------------
179
Hans Wennborg7b852ea2018-01-03 15:49:39 +0000[diff] [blame]180* ...
Vedant Kumar840c2c72017-06-13 02:52:31 +0000[diff] [blame]181
Ted Kremenek004e8232013-04-26 00:01:34 +0000[diff] [blame]182Core Analysis Improvements
183==========================
184
Bill Wendling61f44cc2013-06-04 06:17:46 +0000[diff] [blame]185- ...
Ted Kremenek004e8232013-04-26 00:01:34 +0000[diff] [blame]186
187New Issues Found
188================
189
Bill Wendling61f44cc2013-06-04 06:17:46 +0000[diff] [blame]190- ...
Anna Zaksb6219a92013-04-25 23:14:38 +0000[diff] [blame]191
Sean Silvafe251442012-12-23 01:19:35 +0000[diff] [blame]192Python Binding Changes
193----------------------
194
195The following methods have been added:
196
197- ...
198
199Significant Known Problems
200==========================
201
202Additional Information
203======================
204
205A wide variety of additional information is available on the `Clang web
206page <http://clang.llvm.org/>`_. The web page contains versions of the
207API documentation which are up-to-date with the Subversion version of
208the source code. You can access versions of these documents specific to
209this release by going into the "``clang/docs/``" directory in the Clang
210tree.
211
212If you have any questions or comments about Clang, please feel free to
213contact us via the `mailing
Tanya Lattner4a08e932015-08-05 03:55:23 +0000[diff] [blame]214list <http://lists.llvm.org/mailman/listinfo/cfe-dev>`_.