blob: af54fddaa02e2547c8dce354a4ad49f2d06ffac8 [file] [log] [blame]
Daniel Dunbarfbb80412012-04-19 16:31:37 +00001Overview
2========
3
4.. warning::
5
6 If you are using a released version of LLVM, see `the download page
7 <http://llvm.org/releases/>`_ to find your documentation.
8
9The LLVM compiler infrastructure supports a wide range of projects, from
10industrial strength compilers to specialized JIT applications to small
11research projects.
12
13Similarly, documentation is broken down into several high-level groupings
Benjamin Kramerbde91762012-06-02 10:20:22 +000014targeted at different audiences:
Daniel Dunbarfbb80412012-04-19 16:31:37 +000015
Sean Silva12159ff2013-01-20 02:19:36 +000016LLVM Design & Overview
17======================
Daniel Dunbarfbb80412012-04-19 16:31:37 +000018
Sean Silva12159ff2013-01-20 02:19:36 +000019Several introductory papers and presentations.
Daniel Dunbarfbb80412012-04-19 16:31:37 +000020
21.. toctree::
Sean Silva12159ff2013-01-20 02:19:36 +000022 :hidden:
Daniel Dunbarfbb80412012-04-19 16:31:37 +000023
Sean Silva12159ff2013-01-20 02:19:36 +000024 LangRef
Sean Silva12159ff2013-01-20 02:19:36 +000025
Sean Silva9d0eb942013-01-20 02:19:42 +000026:doc:`LangRef`
Sean Silva12159ff2013-01-20 02:19:36 +000027 Defines the LLVM intermediate representation.
28
Sean Silva9d0eb942013-01-20 02:19:42 +000029`Introduction to the LLVM Compiler`__
Sean Silva12159ff2013-01-20 02:19:36 +000030 Presentation providing a users introduction to LLVM.
31
Sean Silva9d0eb942013-01-20 02:19:42 +000032 .. __: http://llvm.org/pubs/2008-10-04-ACAT-LLVM-Intro.html
Sean Silva12159ff2013-01-20 02:19:36 +000033
Sean Silva9d0eb942013-01-20 02:19:42 +000034`Intro to LLVM`__
Sean Silva12159ff2013-01-20 02:19:36 +000035 Book chapter providing a compiler hacker's introduction to LLVM.
36
Sean Silva9d0eb942013-01-20 02:19:42 +000037 .. __: http://www.aosabook.org/en/llvm.html
Sean Silva12159ff2013-01-20 02:19:36 +000038
Sean Silva9d0eb942013-01-20 02:19:42 +000039
40`LLVM: A Compilation Framework for Lifelong Program Analysis & Transformation`__
Sean Silva12159ff2013-01-20 02:19:36 +000041 Design overview.
42
Sean Silva9d0eb942013-01-20 02:19:42 +000043 .. __: http://llvm.org/pubs/2004-01-30-CGO-LLVM.html
Sean Silva12159ff2013-01-20 02:19:36 +000044
Sean Silva9d0eb942013-01-20 02:19:42 +000045`LLVM: An Infrastructure for Multi-Stage Optimization`__
Sean Silva12159ff2013-01-20 02:19:36 +000046 More details (quite old now).
47
Sean Silva9d0eb942013-01-20 02:19:42 +000048 .. __: http://llvm.org/pubs/2002-12-LattnerMSThesis.html
Sean Silva12159ff2013-01-20 02:19:36 +000049
Sean Silva9d0eb942013-01-20 02:19:42 +000050`Publications mentioning LLVM <http://llvm.org/pubs>`_
51 ..
Sean Silva12159ff2013-01-20 02:19:36 +000052
53User Guides
54===========
55
56For those new to the LLVM system.
57
58NOTE: If you are a user who is only interested in using LLVM-based
59compilers, you should look into `Clang <http://clang.llvm.org>`_ or
60`DragonEgg <http://dragonegg.llvm.org>`_ instead. The documentation here is
61intended for users who have a need to work with the intermediate LLVM
62representation.
63
64.. toctree::
65 :hidden:
66
67 CMake
68 HowToBuildOnARM
Renato Golind24899b2013-09-08 20:44:48 +000069 HowToCrossCompileLLVM
Sean Silva12159ff2013-01-20 02:19:36 +000070 CommandGuide/index
Sean Silva12159ff2013-01-20 02:19:36 +000071 GettingStarted
72 GettingStartedVS
73 FAQ
74 Lexicon
Sean Silva12159ff2013-01-20 02:19:36 +000075 HowToAddABuilder
76 yaml2obj
77 HowToSubmitABug
78 SphinxQuickstartTemplate
79 Phabricator
80 TestingGuide
81 tutorial/index
82 ReleaseNotes
83 Passes
84 YamlIO
Sean Silva163b5c42013-03-30 15:32:50 +000085 GetElementPtr
Sean Silva12159ff2013-01-20 02:19:36 +000086
Sean Silva9d0eb942013-01-20 02:19:42 +000087:doc:`GettingStarted`
Sean Silva12159ff2013-01-20 02:19:36 +000088 Discusses how to get up and running quickly with the LLVM infrastructure.
89 Everything from unpacking and compilation of the distribution to execution
90 of some tools.
91
Sean Silva9d0eb942013-01-20 02:19:42 +000092:doc:`CMake`
Sean Silva12159ff2013-01-20 02:19:36 +000093 An addendum to the main Getting Started guide for those using the `CMake
94 build system <http://www.cmake.org>`_.
95
Sean Silva9d0eb942013-01-20 02:19:42 +000096:doc:`HowToBuildOnARM`
Sean Silva12159ff2013-01-20 02:19:36 +000097 Notes on building and testing LLVM/Clang on ARM.
98
Renato Golind24899b2013-09-08 20:44:48 +000099:doc:`HowToCrossCompileLLVM`
100 Notes on cross-building and testing LLVM/Clang.
101
Sean Silva9d0eb942013-01-20 02:19:42 +0000102:doc:`GettingStartedVS`
Sean Silva12159ff2013-01-20 02:19:36 +0000103 An addendum to the main Getting Started guide for those using Visual Studio
104 on Windows.
105
Sean Silva9d0eb942013-01-20 02:19:42 +0000106:doc:`tutorial/index`
Sean Silva12159ff2013-01-20 02:19:36 +0000107 Tutorials about using LLVM. Includes a tutorial about making a custom
108 language with LLVM.
109
Sean Silva9d0eb942013-01-20 02:19:42 +0000110:doc:`LLVM Command Guide <CommandGuide/index>`
Sean Silva12159ff2013-01-20 02:19:36 +0000111 A reference manual for the LLVM command line utilities ("man" pages for LLVM
112 tools).
113
Sean Silva9d0eb942013-01-20 02:19:42 +0000114:doc:`Passes`
Sean Silva12159ff2013-01-20 02:19:36 +0000115 A list of optimizations and analyses implemented in LLVM.
116
Sean Silva9d0eb942013-01-20 02:19:42 +0000117:doc:`FAQ`
Sean Silva12159ff2013-01-20 02:19:36 +0000118 A list of common questions and problems and their solutions.
119
Sean Silva9d0eb942013-01-20 02:19:42 +0000120:doc:`Release notes for the current release <ReleaseNotes>`
Sean Silva12159ff2013-01-20 02:19:36 +0000121 This describes new features, known bugs, and other limitations.
122
Sean Silva9d0eb942013-01-20 02:19:42 +0000123:doc:`HowToSubmitABug`
Sean Silva12159ff2013-01-20 02:19:36 +0000124 Instructions for properly submitting information about any bugs you run into
125 in the LLVM system.
Sean Silva12159ff2013-01-20 02:19:36 +0000126
Sean Silva9d0eb942013-01-20 02:19:42 +0000127:doc:`SphinxQuickstartTemplate`
Sean Silva12159ff2013-01-20 02:19:36 +0000128 A template + tutorial for writing new Sphinx documentation. It is meant
129 to be read in source form.
130
Sean Silva9d0eb942013-01-20 02:19:42 +0000131:doc:`LLVM Testing Infrastructure Guide <TestingGuide>`
Sean Silva12159ff2013-01-20 02:19:36 +0000132 A reference manual for using the LLVM testing infrastructure.
133
Sean Silva9d0eb942013-01-20 02:19:42 +0000134`How to build the C, C++, ObjC, and ObjC++ front end`__
Sean Silva12159ff2013-01-20 02:19:36 +0000135 Instructions for building the clang front-end from source.
136
Sean Silva9d0eb942013-01-20 02:19:42 +0000137 .. __: http://clang.llvm.org/get_started.html
Sean Silva12159ff2013-01-20 02:19:36 +0000138
Sean Silva9d0eb942013-01-20 02:19:42 +0000139:doc:`Lexicon`
Sean Silva12159ff2013-01-20 02:19:36 +0000140 Definition of acronyms, terms and concepts used in LLVM.
141
Sean Silva9d0eb942013-01-20 02:19:42 +0000142:doc:`HowToAddABuilder`
Sean Silva12159ff2013-01-20 02:19:36 +0000143 Instructions for adding new builder to LLVM buildbot master.
144
Sean Silva9d0eb942013-01-20 02:19:42 +0000145:doc:`YamlIO`
Sean Silva12159ff2013-01-20 02:19:36 +0000146 A reference guide for using LLVM's YAML I/O library.
147
Sean Silva163b5c42013-03-30 15:32:50 +0000148:doc:`GetElementPtr`
149 Answers to some very frequent questions about LLVM's most frequently
150 misunderstood instruction.
151
Sean Silva12159ff2013-01-20 02:19:36 +0000152Programming Documentation
153=========================
154
155For developers of applications which use LLVM as a library.
156
157.. toctree::
158 :hidden:
159
160 Atomics
161 CodingStandards
162 CommandLine
163 CompilerWriterInfo
164 ExtendingLLVM
165 HowToSetUpLLVMStyleRTTI
166 ProgrammersManual
Nico Rieck1da45292013-04-10 23:28:17 +0000167 Extensions
Sean Silva12159ff2013-01-20 02:19:36 +0000168
Sean Silva9d0eb942013-01-20 02:19:42 +0000169:doc:`LLVM Language Reference Manual <LangRef>`
Sean Silva12159ff2013-01-20 02:19:36 +0000170 Defines the LLVM intermediate representation and the assembly form of the
171 different nodes.
172
Sean Silva9d0eb942013-01-20 02:19:42 +0000173:doc:`Atomics`
Sean Silva12159ff2013-01-20 02:19:36 +0000174 Information about LLVM's concurrency model.
175
Sean Silva9d0eb942013-01-20 02:19:42 +0000176:doc:`ProgrammersManual`
Sean Silva12159ff2013-01-20 02:19:36 +0000177 Introduction to the general layout of the LLVM sourcebase, important classes
178 and APIs, and some tips & tricks.
179
Nico Rieck1da45292013-04-10 23:28:17 +0000180:doc:`Extensions`
181 LLVM-specific extensions to tools and formats LLVM seeks compatibility with.
182
Sean Silva9d0eb942013-01-20 02:19:42 +0000183:doc:`CommandLine`
Sean Silva12159ff2013-01-20 02:19:36 +0000184 Provides information on using the command line parsing library.
185
Sean Silva9d0eb942013-01-20 02:19:42 +0000186:doc:`CodingStandards`
Sean Silva12159ff2013-01-20 02:19:36 +0000187 Details the LLVM coding standards and provides useful information on writing
188 efficient C++ code.
189
Sean Silva9d0eb942013-01-20 02:19:42 +0000190:doc:`HowToSetUpLLVMStyleRTTI`
Sean Silva12159ff2013-01-20 02:19:36 +0000191 How to make ``isa<>``, ``dyn_cast<>``, etc. available for clients of your
192 class hierarchy.
193
Sean Silva9d0eb942013-01-20 02:19:42 +0000194:doc:`ExtendingLLVM`
Sean Silva12159ff2013-01-20 02:19:36 +0000195 Look here to see how to add instructions and intrinsics to LLVM.
196
Sean Silva9d0eb942013-01-20 02:19:42 +0000197`Doxygen generated documentation <http://llvm.org/doxygen/>`_
Sean Silva12159ff2013-01-20 02:19:36 +0000198 (`classes <http://llvm.org/doxygen/inherits.html>`_)
199 (`tarball <http://llvm.org/doxygen/doxygen.tar.gz>`_)
200
Sean Silva9d0eb942013-01-20 02:19:42 +0000201`ViewVC Repository Browser <http://llvm.org/viewvc/>`_
202 ..
Sean Silva12159ff2013-01-20 02:19:36 +0000203
Sean Silva9d0eb942013-01-20 02:19:42 +0000204:doc:`CompilerWriterInfo`
Sean Silva12159ff2013-01-20 02:19:36 +0000205 A list of helpful links for compiler writers.
206
207Subsystem Documentation
208=======================
209
210For API clients and LLVM developers.
211
212.. toctree::
213 :hidden:
214
215 AliasAnalysis
216 BitCodeFormat
217 BranchWeightMetadata
218 Bugpoint
219 CodeGenerator
220 ExceptionHandling
221 LinkTimeOptimization
222 SegmentedStacks
223 TableGenFundamentals
224 DebuggingJITedCode
225 GoldPlugin
226 MarkedUpDisassembly
227 SystemLibrary
228 SourceLevelDebugging
229 Vectorizers
230 WritingAnLLVMBackend
231 GarbageCollection
232 WritingAnLLVMPass
233 TableGen/LangRef
Joe Abbeyba3e9012013-02-12 11:45:22 +0000234 HowToUseAttributes
Justin Holewinski45df8822013-03-30 16:41:14 +0000235 NVPTXUsage
Sean Silva12159ff2013-01-20 02:19:36 +0000236
Sean Silva9d0eb942013-01-20 02:19:42 +0000237:doc:`WritingAnLLVMPass`
Sean Silva12159ff2013-01-20 02:19:36 +0000238 Information on how to write LLVM transformations and analyses.
239
Sean Silva9d0eb942013-01-20 02:19:42 +0000240:doc:`WritingAnLLVMBackend`
Sean Silva12159ff2013-01-20 02:19:36 +0000241 Information on how to write LLVM backends for machine targets.
242
Sean Silva9d0eb942013-01-20 02:19:42 +0000243:doc:`CodeGenerator`
Sean Silva12159ff2013-01-20 02:19:36 +0000244 The design and implementation of the LLVM code generator. Useful if you are
245 working on retargetting LLVM to a new architecture, designing a new codegen
246 pass, or enhancing existing components.
247
Sean Silva9d0eb942013-01-20 02:19:42 +0000248:doc:`TableGenFundamentals`
Sean Silva12159ff2013-01-20 02:19:36 +0000249 Describes the TableGen tool, which is used heavily by the LLVM code
250 generator.
251
Sean Silva9d0eb942013-01-20 02:19:42 +0000252:doc:`AliasAnalysis`
Sean Silva12159ff2013-01-20 02:19:36 +0000253 Information on how to write a new alias analysis implementation or how to
254 use existing analyses.
255
Sean Silva9d0eb942013-01-20 02:19:42 +0000256:doc:`GarbageCollection`
Sean Silva12159ff2013-01-20 02:19:36 +0000257 The interfaces source-language compilers should use for compiling GC'd
258 programs.
259
Sean Silva9d0eb942013-01-20 02:19:42 +0000260:doc:`Source Level Debugging with LLVM <SourceLevelDebugging>`
Sean Silva12159ff2013-01-20 02:19:36 +0000261 This document describes the design and philosophy behind the LLVM
262 source-level debugger.
263
Sean Silva9d0eb942013-01-20 02:19:42 +0000264:doc:`Vectorizers`
Sean Silva12159ff2013-01-20 02:19:36 +0000265 This document describes the current status of vectorization in LLVM.
266
Sean Silva9d0eb942013-01-20 02:19:42 +0000267:doc:`ExceptionHandling`
Sean Silva12159ff2013-01-20 02:19:36 +0000268 This document describes the design and implementation of exception handling
269 in LLVM.
270
Sean Silva9d0eb942013-01-20 02:19:42 +0000271:doc:`Bugpoint`
Sean Silva12159ff2013-01-20 02:19:36 +0000272 Automatic bug finder and test-case reducer description and usage
273 information.
274
Sean Silva9d0eb942013-01-20 02:19:42 +0000275:doc:`BitCodeFormat`
Sean Silva12159ff2013-01-20 02:19:36 +0000276 This describes the file format and encoding used for LLVM "bc" files.
277
Sean Silva9d0eb942013-01-20 02:19:42 +0000278:doc:`System Library <SystemLibrary>`
Sean Silva12159ff2013-01-20 02:19:36 +0000279 This document describes the LLVM System Library (``lib/System``) and
280 how to keep LLVM source code portable
281
Sean Silva9d0eb942013-01-20 02:19:42 +0000282:doc:`LinkTimeOptimization`
Sean Silva12159ff2013-01-20 02:19:36 +0000283 This document describes the interface between LLVM intermodular optimizer
284 and the linker and its design
285
Sean Silva9d0eb942013-01-20 02:19:42 +0000286:doc:`GoldPlugin`
Sean Silva12159ff2013-01-20 02:19:36 +0000287 How to build your programs with link-time optimization on Linux.
288
Sean Silva9d0eb942013-01-20 02:19:42 +0000289:doc:`DebuggingJITedCode`
Sean Silva12159ff2013-01-20 02:19:36 +0000290 How to debug JITed code with GDB.
291
Andrew Kaylor27299c32013-08-21 22:15:09 +0000292:doc:`MCJITDesignAndImplementation`
293 Describes the inner workings of MCJIT execution engine.
294
Sean Silva9d0eb942013-01-20 02:19:42 +0000295:doc:`BranchWeightMetadata`
Sean Silva12159ff2013-01-20 02:19:36 +0000296 Provides information about Branch Prediction Information.
297
Sean Silva9d0eb942013-01-20 02:19:42 +0000298:doc:`SegmentedStacks`
Sean Silva12159ff2013-01-20 02:19:36 +0000299 This document describes segmented stacks and how they are used in LLVM.
300
Sean Silva9d0eb942013-01-20 02:19:42 +0000301:doc:`MarkedUpDisassembly`
Sean Silva12159ff2013-01-20 02:19:36 +0000302 This document describes the optional rich disassembly output syntax.
303
Joe Abbeyba3e9012013-02-12 11:45:22 +0000304:doc:`HowToUseAttributes`
305 Answers some questions about the new Attributes infrastructure.
Sean Silva12159ff2013-01-20 02:19:36 +0000306
Justin Holewinski45df8822013-03-30 16:41:14 +0000307:doc:`NVPTXUsage`
308 This document describes using the NVPTX back-end to compile GPU kernels.
309
310
Sean Silva12159ff2013-01-20 02:19:36 +0000311Development Process Documentation
312=================================
313
Sean Silva12159ff2013-01-20 02:19:36 +0000314Information about LLVM's development process.
315
316.. toctree::
317 :hidden:
318
Sean Silva9d205c82013-03-30 15:32:47 +0000319 DeveloperPolicy
Sean Silva12159ff2013-01-20 02:19:36 +0000320 MakefileGuide
321 Projects
322 LLVMBuild
323 HowToReleaseLLVM
Sean Silvabdb940f2013-01-28 21:28:10 +0000324 Packaging
Sean Silva12159ff2013-01-20 02:19:36 +0000325
Sean Silva9d205c82013-03-30 15:32:47 +0000326:doc:`DeveloperPolicy`
327 The LLVM project's policy towards developers and their contributions.
328
Sean Silva9d0eb942013-01-20 02:19:42 +0000329:doc:`Projects`
Sean Silva12159ff2013-01-20 02:19:36 +0000330 How-to guide and templates for new projects that *use* the LLVM
331 infrastructure. The templates (directory organization, Makefiles, and test
332 tree) allow the project code to be located outside (or inside) the ``llvm/``
333 tree, while using LLVM header files and libraries.
334
Sean Silva9d0eb942013-01-20 02:19:42 +0000335:doc:`LLVMBuild`
Sean Silva12159ff2013-01-20 02:19:36 +0000336 Describes the LLVMBuild organization and files used by LLVM to specify
337 component descriptions.
338
Sean Silva9d0eb942013-01-20 02:19:42 +0000339:doc:`MakefileGuide`
Sean Silva12159ff2013-01-20 02:19:36 +0000340 Describes how the LLVM makefiles work and how to use them.
341
Sean Silva9d0eb942013-01-20 02:19:42 +0000342:doc:`HowToReleaseLLVM`
Sean Silva12159ff2013-01-20 02:19:36 +0000343 This is a guide to preparing LLVM releases. Most developers can ignore it.
344
Renato Golinc08f2182013-05-28 10:32:55 +0000345:doc:`ReleaseProcess`
346 This is a validate a new release, during the release process. Most developers can ignore it.
347
Sean Silvabdb940f2013-01-28 21:28:10 +0000348:doc:`Packaging`
349 Advice on packaging LLVM into a distribution.
350
Sean Silva01299242013-03-30 15:32:51 +0000351Community
352=========
353
354LLVM has a thriving community of friendly and helpful developers.
355The two primary communication mechanisms in the LLVM community are mailing
356lists and IRC.
357
Sean Silva12159ff2013-01-20 02:19:36 +0000358Mailing Lists
Sean Silva01299242013-03-30 15:32:51 +0000359-------------
Sean Silva12159ff2013-01-20 02:19:36 +0000360
361If you can't find what you need in these docs, try consulting the mailing
362lists.
363
Sean Silvaab4997d2013-03-30 15:33:01 +0000364`Developer's List (llvmdev)`__
Sean Silva12159ff2013-01-20 02:19:36 +0000365 This list is for people who want to be included in technical discussions of
366 LLVM. People post to this list when they have questions about writing code
367 for or using the LLVM tools. It is relatively low volume.
368
Sean Silva9d0eb942013-01-20 02:19:42 +0000369 .. __: http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
Sean Silva12159ff2013-01-20 02:19:36 +0000370
Sean Silvaab4997d2013-03-30 15:33:01 +0000371`Commits Archive (llvm-commits)`__
Sean Silva12159ff2013-01-20 02:19:36 +0000372 This list contains all commit messages that are made when LLVM developers
Sean Silva2a746992013-03-30 15:33:02 +0000373 commit code changes to the repository. It also serves as a forum for
374 patch review (i.e. send patches here). It is useful for those who want to
375 stay on the bleeding edge of LLVM development. This list is very high
376 volume.
Sean Silva12159ff2013-01-20 02:19:36 +0000377
Sean Silva9d0eb942013-01-20 02:19:42 +0000378 .. __: http://lists.cs.uiuc.edu/pipermail/llvm-commits/
Sean Silva12159ff2013-01-20 02:19:36 +0000379
Sean Silvaab4997d2013-03-30 15:33:01 +0000380`Bugs & Patches Archive (llvmbugs)`__
Sean Silva2a746992013-03-30 15:33:02 +0000381 This list gets emailed every time a bug is opened and closed. It is
382 higher volume than the LLVMdev list.
Sean Silva84b296c2013-03-30 15:32:54 +0000383
384 .. __: http://lists.cs.uiuc.edu/pipermail/llvmbugs/
385
Sean Silvaab4997d2013-03-30 15:33:01 +0000386`Test Results Archive (llvm-testresults)`__
Sean Silva12159ff2013-01-20 02:19:36 +0000387 A message is automatically sent to this list by every active nightly tester
388 when it completes. As such, this list gets email several times each day,
389 making it a high volume list.
390
Sean Silva9d0eb942013-01-20 02:19:42 +0000391 .. __: http://lists.cs.uiuc.edu/pipermail/llvm-testresults/
392
Sean Silvaab4997d2013-03-30 15:33:01 +0000393`LLVM Announcements List (llvm-announce)`__
Sean Silva84b296c2013-03-30 15:32:54 +0000394 This is a low volume list that provides important announcements regarding
395 LLVM. It gets email about once a month.
396
397 .. __: http://lists.cs.uiuc.edu/mailman/listinfo/llvm-announce
398
Sean Silva01299242013-03-30 15:32:51 +0000399IRC
400---
401
402Users and developers of the LLVM project (including subprojects such as Clang)
403can be found in #llvm on `irc.oftc.net <irc://irc.oftc.net/llvm>`_.
404
405This channel has several bots.
406
407* Buildbot reporters
408
409 * llvmbb - Bot for the main LLVM buildbot master.
410 http://lab.llvm.org:8011/console
411 * bb-chapuni - An individually run buildbot master. http://bb.pgr.jp/console
412 * smooshlab - Apple's internal buildbot master.
413
414* robot - Bugzilla linker. %bug <number>
415
416* clang-bot - A `geordi <http://www.eelis.net/geordi/>`_ instance running
417 near-trunk clang instead of gcc.
418
419
Daniel Dunbarfbb80412012-04-19 16:31:37 +0000420Indices and tables
421==================
422
423* :ref:`genindex`
424* :ref:`search`