blob: c3bb8089da303d873e71d3783ade4ff4f70cf4a4 [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
69 CommandGuide/index
Sean Silva12159ff2013-01-20 02:19:36 +000070 GettingStarted
71 GettingStartedVS
72 FAQ
73 Lexicon
Sean Silva12159ff2013-01-20 02:19:36 +000074 HowToAddABuilder
75 yaml2obj
76 HowToSubmitABug
77 SphinxQuickstartTemplate
78 Phabricator
79 TestingGuide
80 tutorial/index
81 ReleaseNotes
82 Passes
83 YamlIO
Sean Silva163b5c42013-03-30 15:32:50 +000084 GetElementPtr
Sean Silva12159ff2013-01-20 02:19:36 +000085
Sean Silva9d0eb942013-01-20 02:19:42 +000086:doc:`GettingStarted`
Sean Silva12159ff2013-01-20 02:19:36 +000087 Discusses how to get up and running quickly with the LLVM infrastructure.
88 Everything from unpacking and compilation of the distribution to execution
89 of some tools.
90
Sean Silva9d0eb942013-01-20 02:19:42 +000091:doc:`CMake`
Sean Silva12159ff2013-01-20 02:19:36 +000092 An addendum to the main Getting Started guide for those using the `CMake
93 build system <http://www.cmake.org>`_.
94
Sean Silva9d0eb942013-01-20 02:19:42 +000095:doc:`HowToBuildOnARM`
Sean Silva12159ff2013-01-20 02:19:36 +000096 Notes on building and testing LLVM/Clang on ARM.
97
Sean Silva9d0eb942013-01-20 02:19:42 +000098:doc:`GettingStartedVS`
Sean Silva12159ff2013-01-20 02:19:36 +000099 An addendum to the main Getting Started guide for those using Visual Studio
100 on Windows.
101
Sean Silva9d0eb942013-01-20 02:19:42 +0000102:doc:`tutorial/index`
Sean Silva12159ff2013-01-20 02:19:36 +0000103 Tutorials about using LLVM. Includes a tutorial about making a custom
104 language with LLVM.
105
Sean Silva9d0eb942013-01-20 02:19:42 +0000106:doc:`LLVM Command Guide <CommandGuide/index>`
Sean Silva12159ff2013-01-20 02:19:36 +0000107 A reference manual for the LLVM command line utilities ("man" pages for LLVM
108 tools).
109
Sean Silva9d0eb942013-01-20 02:19:42 +0000110:doc:`Passes`
Sean Silva12159ff2013-01-20 02:19:36 +0000111 A list of optimizations and analyses implemented in LLVM.
112
Sean Silva9d0eb942013-01-20 02:19:42 +0000113:doc:`FAQ`
Sean Silva12159ff2013-01-20 02:19:36 +0000114 A list of common questions and problems and their solutions.
115
Sean Silva9d0eb942013-01-20 02:19:42 +0000116:doc:`Release notes for the current release <ReleaseNotes>`
Sean Silva12159ff2013-01-20 02:19:36 +0000117 This describes new features, known bugs, and other limitations.
118
Sean Silva9d0eb942013-01-20 02:19:42 +0000119:doc:`HowToSubmitABug`
Sean Silva12159ff2013-01-20 02:19:36 +0000120 Instructions for properly submitting information about any bugs you run into
121 in the LLVM system.
Sean Silva12159ff2013-01-20 02:19:36 +0000122
Sean Silva9d0eb942013-01-20 02:19:42 +0000123:doc:`SphinxQuickstartTemplate`
Sean Silva12159ff2013-01-20 02:19:36 +0000124 A template + tutorial for writing new Sphinx documentation. It is meant
125 to be read in source form.
126
Sean Silva9d0eb942013-01-20 02:19:42 +0000127:doc:`LLVM Testing Infrastructure Guide <TestingGuide>`
Sean Silva12159ff2013-01-20 02:19:36 +0000128 A reference manual for using the LLVM testing infrastructure.
129
Sean Silva9d0eb942013-01-20 02:19:42 +0000130`How to build the C, C++, ObjC, and ObjC++ front end`__
Sean Silva12159ff2013-01-20 02:19:36 +0000131 Instructions for building the clang front-end from source.
132
Sean Silva9d0eb942013-01-20 02:19:42 +0000133 .. __: http://clang.llvm.org/get_started.html
Sean Silva12159ff2013-01-20 02:19:36 +0000134
Sean Silva9d0eb942013-01-20 02:19:42 +0000135:doc:`Lexicon`
Sean Silva12159ff2013-01-20 02:19:36 +0000136 Definition of acronyms, terms and concepts used in LLVM.
137
Sean Silva9d0eb942013-01-20 02:19:42 +0000138:doc:`HowToAddABuilder`
Sean Silva12159ff2013-01-20 02:19:36 +0000139 Instructions for adding new builder to LLVM buildbot master.
140
Sean Silva9d0eb942013-01-20 02:19:42 +0000141:doc:`YamlIO`
Sean Silva12159ff2013-01-20 02:19:36 +0000142 A reference guide for using LLVM's YAML I/O library.
143
Sean Silva163b5c42013-03-30 15:32:50 +0000144:doc:`GetElementPtr`
145 Answers to some very frequent questions about LLVM's most frequently
146 misunderstood instruction.
147
Sean Silva12159ff2013-01-20 02:19:36 +0000148Programming Documentation
149=========================
150
151For developers of applications which use LLVM as a library.
152
153.. toctree::
154 :hidden:
155
156 Atomics
157 CodingStandards
158 CommandLine
159 CompilerWriterInfo
160 ExtendingLLVM
161 HowToSetUpLLVMStyleRTTI
162 ProgrammersManual
163
Sean Silva9d0eb942013-01-20 02:19:42 +0000164:doc:`LLVM Language Reference Manual <LangRef>`
Sean Silva12159ff2013-01-20 02:19:36 +0000165 Defines the LLVM intermediate representation and the assembly form of the
166 different nodes.
167
Sean Silva9d0eb942013-01-20 02:19:42 +0000168:doc:`Atomics`
Sean Silva12159ff2013-01-20 02:19:36 +0000169 Information about LLVM's concurrency model.
170
Sean Silva9d0eb942013-01-20 02:19:42 +0000171:doc:`ProgrammersManual`
Sean Silva12159ff2013-01-20 02:19:36 +0000172 Introduction to the general layout of the LLVM sourcebase, important classes
173 and APIs, and some tips & tricks.
174
Sean Silva9d0eb942013-01-20 02:19:42 +0000175:doc:`CommandLine`
Sean Silva12159ff2013-01-20 02:19:36 +0000176 Provides information on using the command line parsing library.
177
Sean Silva9d0eb942013-01-20 02:19:42 +0000178:doc:`CodingStandards`
Sean Silva12159ff2013-01-20 02:19:36 +0000179 Details the LLVM coding standards and provides useful information on writing
180 efficient C++ code.
181
Sean Silva9d0eb942013-01-20 02:19:42 +0000182:doc:`HowToSetUpLLVMStyleRTTI`
Sean Silva12159ff2013-01-20 02:19:36 +0000183 How to make ``isa<>``, ``dyn_cast<>``, etc. available for clients of your
184 class hierarchy.
185
Sean Silva9d0eb942013-01-20 02:19:42 +0000186:doc:`ExtendingLLVM`
Sean Silva12159ff2013-01-20 02:19:36 +0000187 Look here to see how to add instructions and intrinsics to LLVM.
188
Sean Silva9d0eb942013-01-20 02:19:42 +0000189`Doxygen generated documentation <http://llvm.org/doxygen/>`_
Sean Silva12159ff2013-01-20 02:19:36 +0000190 (`classes <http://llvm.org/doxygen/inherits.html>`_)
191 (`tarball <http://llvm.org/doxygen/doxygen.tar.gz>`_)
192
Sean Silva9d0eb942013-01-20 02:19:42 +0000193`ViewVC Repository Browser <http://llvm.org/viewvc/>`_
194 ..
Sean Silva12159ff2013-01-20 02:19:36 +0000195
Sean Silva9d0eb942013-01-20 02:19:42 +0000196:doc:`CompilerWriterInfo`
Sean Silva12159ff2013-01-20 02:19:36 +0000197 A list of helpful links for compiler writers.
198
199Subsystem Documentation
200=======================
201
202For API clients and LLVM developers.
203
204.. toctree::
205 :hidden:
206
207 AliasAnalysis
208 BitCodeFormat
209 BranchWeightMetadata
210 Bugpoint
211 CodeGenerator
212 ExceptionHandling
213 LinkTimeOptimization
214 SegmentedStacks
215 TableGenFundamentals
216 DebuggingJITedCode
217 GoldPlugin
218 MarkedUpDisassembly
219 SystemLibrary
220 SourceLevelDebugging
221 Vectorizers
222 WritingAnLLVMBackend
223 GarbageCollection
224 WritingAnLLVMPass
225 TableGen/LangRef
Joe Abbeyba3e9012013-02-12 11:45:22 +0000226 HowToUseAttributes
Justin Holewinski45df8822013-03-30 16:41:14 +0000227 NVPTXUsage
Sean Silva12159ff2013-01-20 02:19:36 +0000228
Sean Silva9d0eb942013-01-20 02:19:42 +0000229:doc:`WritingAnLLVMPass`
Sean Silva12159ff2013-01-20 02:19:36 +0000230 Information on how to write LLVM transformations and analyses.
231
Sean Silva9d0eb942013-01-20 02:19:42 +0000232:doc:`WritingAnLLVMBackend`
Sean Silva12159ff2013-01-20 02:19:36 +0000233 Information on how to write LLVM backends for machine targets.
234
Sean Silva9d0eb942013-01-20 02:19:42 +0000235:doc:`CodeGenerator`
Sean Silva12159ff2013-01-20 02:19:36 +0000236 The design and implementation of the LLVM code generator. Useful if you are
237 working on retargetting LLVM to a new architecture, designing a new codegen
238 pass, or enhancing existing components.
239
Sean Silva9d0eb942013-01-20 02:19:42 +0000240:doc:`TableGenFundamentals`
Sean Silva12159ff2013-01-20 02:19:36 +0000241 Describes the TableGen tool, which is used heavily by the LLVM code
242 generator.
243
Sean Silva9d0eb942013-01-20 02:19:42 +0000244:doc:`AliasAnalysis`
Sean Silva12159ff2013-01-20 02:19:36 +0000245 Information on how to write a new alias analysis implementation or how to
246 use existing analyses.
247
Sean Silva9d0eb942013-01-20 02:19:42 +0000248:doc:`GarbageCollection`
Sean Silva12159ff2013-01-20 02:19:36 +0000249 The interfaces source-language compilers should use for compiling GC'd
250 programs.
251
Sean Silva9d0eb942013-01-20 02:19:42 +0000252:doc:`Source Level Debugging with LLVM <SourceLevelDebugging>`
Sean Silva12159ff2013-01-20 02:19:36 +0000253 This document describes the design and philosophy behind the LLVM
254 source-level debugger.
255
Sean Silva9d0eb942013-01-20 02:19:42 +0000256:doc:`Vectorizers`
Sean Silva12159ff2013-01-20 02:19:36 +0000257 This document describes the current status of vectorization in LLVM.
258
Sean Silva9d0eb942013-01-20 02:19:42 +0000259:doc:`ExceptionHandling`
Sean Silva12159ff2013-01-20 02:19:36 +0000260 This document describes the design and implementation of exception handling
261 in LLVM.
262
Sean Silva9d0eb942013-01-20 02:19:42 +0000263:doc:`Bugpoint`
Sean Silva12159ff2013-01-20 02:19:36 +0000264 Automatic bug finder and test-case reducer description and usage
265 information.
266
Sean Silva9d0eb942013-01-20 02:19:42 +0000267:doc:`BitCodeFormat`
Sean Silva12159ff2013-01-20 02:19:36 +0000268 This describes the file format and encoding used for LLVM "bc" files.
269
Sean Silva9d0eb942013-01-20 02:19:42 +0000270:doc:`System Library <SystemLibrary>`
Sean Silva12159ff2013-01-20 02:19:36 +0000271 This document describes the LLVM System Library (``lib/System``) and
272 how to keep LLVM source code portable
273
Sean Silva9d0eb942013-01-20 02:19:42 +0000274:doc:`LinkTimeOptimization`
Sean Silva12159ff2013-01-20 02:19:36 +0000275 This document describes the interface between LLVM intermodular optimizer
276 and the linker and its design
277
Sean Silva9d0eb942013-01-20 02:19:42 +0000278:doc:`GoldPlugin`
Sean Silva12159ff2013-01-20 02:19:36 +0000279 How to build your programs with link-time optimization on Linux.
280
Sean Silva9d0eb942013-01-20 02:19:42 +0000281:doc:`DebuggingJITedCode`
Sean Silva12159ff2013-01-20 02:19:36 +0000282 How to debug JITed code with GDB.
283
Sean Silva9d0eb942013-01-20 02:19:42 +0000284:doc:`BranchWeightMetadata`
Sean Silva12159ff2013-01-20 02:19:36 +0000285 Provides information about Branch Prediction Information.
286
Sean Silva9d0eb942013-01-20 02:19:42 +0000287:doc:`SegmentedStacks`
Sean Silva12159ff2013-01-20 02:19:36 +0000288 This document describes segmented stacks and how they are used in LLVM.
289
Sean Silva9d0eb942013-01-20 02:19:42 +0000290:doc:`MarkedUpDisassembly`
Sean Silva12159ff2013-01-20 02:19:36 +0000291 This document describes the optional rich disassembly output syntax.
292
Joe Abbeyba3e9012013-02-12 11:45:22 +0000293:doc:`HowToUseAttributes`
294 Answers some questions about the new Attributes infrastructure.
Sean Silva12159ff2013-01-20 02:19:36 +0000295
Justin Holewinski45df8822013-03-30 16:41:14 +0000296:doc:`NVPTXUsage`
297 This document describes using the NVPTX back-end to compile GPU kernels.
298
299
Sean Silva12159ff2013-01-20 02:19:36 +0000300Development Process Documentation
301=================================
302
Sean Silva12159ff2013-01-20 02:19:36 +0000303Information about LLVM's development process.
304
305.. toctree::
306 :hidden:
307
Sean Silva9d205c82013-03-30 15:32:47 +0000308 DeveloperPolicy
Sean Silva12159ff2013-01-20 02:19:36 +0000309 MakefileGuide
310 Projects
311 LLVMBuild
312 HowToReleaseLLVM
Sean Silvabdb940f2013-01-28 21:28:10 +0000313 Packaging
Sean Silva12159ff2013-01-20 02:19:36 +0000314
Sean Silva9d205c82013-03-30 15:32:47 +0000315:doc:`DeveloperPolicy`
316 The LLVM project's policy towards developers and their contributions.
317
Sean Silva9d0eb942013-01-20 02:19:42 +0000318:doc:`Projects`
Sean Silva12159ff2013-01-20 02:19:36 +0000319 How-to guide and templates for new projects that *use* the LLVM
320 infrastructure. The templates (directory organization, Makefiles, and test
321 tree) allow the project code to be located outside (or inside) the ``llvm/``
322 tree, while using LLVM header files and libraries.
323
Sean Silva9d0eb942013-01-20 02:19:42 +0000324:doc:`LLVMBuild`
Sean Silva12159ff2013-01-20 02:19:36 +0000325 Describes the LLVMBuild organization and files used by LLVM to specify
326 component descriptions.
327
Sean Silva9d0eb942013-01-20 02:19:42 +0000328:doc:`MakefileGuide`
Sean Silva12159ff2013-01-20 02:19:36 +0000329 Describes how the LLVM makefiles work and how to use them.
330
Sean Silva9d0eb942013-01-20 02:19:42 +0000331:doc:`HowToReleaseLLVM`
Sean Silva12159ff2013-01-20 02:19:36 +0000332 This is a guide to preparing LLVM releases. Most developers can ignore it.
333
Sean Silvabdb940f2013-01-28 21:28:10 +0000334:doc:`Packaging`
335 Advice on packaging LLVM into a distribution.
336
Sean Silva01299242013-03-30 15:32:51 +0000337Community
338=========
339
340LLVM has a thriving community of friendly and helpful developers.
341The two primary communication mechanisms in the LLVM community are mailing
342lists and IRC.
343
Sean Silva12159ff2013-01-20 02:19:36 +0000344Mailing Lists
Sean Silva01299242013-03-30 15:32:51 +0000345-------------
Sean Silva12159ff2013-01-20 02:19:36 +0000346
347If you can't find what you need in these docs, try consulting the mailing
348lists.
349
Sean Silvaab4997d2013-03-30 15:33:01 +0000350`Developer's List (llvmdev)`__
Sean Silva12159ff2013-01-20 02:19:36 +0000351 This list is for people who want to be included in technical discussions of
352 LLVM. People post to this list when they have questions about writing code
353 for or using the LLVM tools. It is relatively low volume.
354
Sean Silva9d0eb942013-01-20 02:19:42 +0000355 .. __: http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
Sean Silva12159ff2013-01-20 02:19:36 +0000356
Sean Silvaab4997d2013-03-30 15:33:01 +0000357`Commits Archive (llvm-commits)`__
Sean Silva12159ff2013-01-20 02:19:36 +0000358 This list contains all commit messages that are made when LLVM developers
Sean Silva2a746992013-03-30 15:33:02 +0000359 commit code changes to the repository. It also serves as a forum for
360 patch review (i.e. send patches here). It is useful for those who want to
361 stay on the bleeding edge of LLVM development. This list is very high
362 volume.
Sean Silva12159ff2013-01-20 02:19:36 +0000363
Sean Silva9d0eb942013-01-20 02:19:42 +0000364 .. __: http://lists.cs.uiuc.edu/pipermail/llvm-commits/
Sean Silva12159ff2013-01-20 02:19:36 +0000365
Sean Silvaab4997d2013-03-30 15:33:01 +0000366`Bugs & Patches Archive (llvmbugs)`__
Sean Silva2a746992013-03-30 15:33:02 +0000367 This list gets emailed every time a bug is opened and closed. It is
368 higher volume than the LLVMdev list.
Sean Silva84b296c2013-03-30 15:32:54 +0000369
370 .. __: http://lists.cs.uiuc.edu/pipermail/llvmbugs/
371
Sean Silvaab4997d2013-03-30 15:33:01 +0000372`Test Results Archive (llvm-testresults)`__
Sean Silva12159ff2013-01-20 02:19:36 +0000373 A message is automatically sent to this list by every active nightly tester
374 when it completes. As such, this list gets email several times each day,
375 making it a high volume list.
376
Sean Silva9d0eb942013-01-20 02:19:42 +0000377 .. __: http://lists.cs.uiuc.edu/pipermail/llvm-testresults/
378
Sean Silvaab4997d2013-03-30 15:33:01 +0000379`LLVM Announcements List (llvm-announce)`__
Sean Silva84b296c2013-03-30 15:32:54 +0000380 This is a low volume list that provides important announcements regarding
381 LLVM. It gets email about once a month.
382
383 .. __: http://lists.cs.uiuc.edu/mailman/listinfo/llvm-announce
384
Sean Silva01299242013-03-30 15:32:51 +0000385IRC
386---
387
388Users and developers of the LLVM project (including subprojects such as Clang)
389can be found in #llvm on `irc.oftc.net <irc://irc.oftc.net/llvm>`_.
390
391This channel has several bots.
392
393* Buildbot reporters
394
395 * llvmbb - Bot for the main LLVM buildbot master.
396 http://lab.llvm.org:8011/console
397 * bb-chapuni - An individually run buildbot master. http://bb.pgr.jp/console
398 * smooshlab - Apple's internal buildbot master.
399
400* robot - Bugzilla linker. %bug <number>
401
402* clang-bot - A `geordi <http://www.eelis.net/geordi/>`_ instance running
403 near-trunk clang instead of gcc.
404
405
Daniel Dunbarfbb80412012-04-19 16:31:37 +0000406Indices and tables
407==================
408
409* :ref:`genindex`
410* :ref:`search`