llvm/docs
Eli Friedman 9ff02efe80 [LangRef] nnan and ninf produce poison.
Clarify that violating nnan and ninf can lead to undefined behavior.
This allows more aggressive optimizations based on those assumptions.

Differential Revision: https://reviews.llvm.org/D47963



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337323 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-17 20:31:42 +00:00
..
_ocamldoc [OCaml] Use a nicer style for documentation than OCaml default. 2015-07-17 06:37:59 +00:00
_static Fix some typos in the doc 2016-08-28 20:29:18 +00:00
_templates
_themes/llvm-theme
CommandGuide [llvm-mca][docs] Revert mca internals docs. 2018-07-17 16:11:54 +00:00
Frontend [docs][PerformanceTips] Add text on allocas and alignment 2015-09-10 17:03:10 +00:00
HistoricalNotes
PDB Update MSF File Documentation. 2018-01-12 21:42:39 +00:00
Proposals remove unreferenced footnotes 2018-01-05 00:24:55 +00:00
TableGen [TableGen] Add a general-purpose JSON backend. 2018-07-11 08:40:19 +00:00
tutorial [docs] Fix a typo in KaleidoscopeJIT tutorial 2018-05-08 18:43:27 +00:00
AdvancedBuilds.rst [NFC] Remove apostrophe to use 'it' in the possessive form. 2018-01-26 18:43:57 +00:00
AliasAnalysis.rst [doc] Removed obsolete -count-aa from AliasAnalysis documentation 2018-04-23 13:45:28 +00:00
AMDGPUAsmGFX7.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler description 2018-03-12 15:55:08 +00:00
AMDGPUAsmGFX8.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler description 2018-03-12 15:55:08 +00:00
AMDGPUAsmGFX9.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler description 2018-03-12 15:55:08 +00:00
AMDGPUOperandSyntax.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler description 2018-03-12 15:55:08 +00:00
AMDGPUUsage.rst AMDHSA: Put old assembler docs back 2018-06-22 19:23:18 +00:00
ARM-BE-bitcastfail.png
ARM-BE-bitcastsuccess.png
ARM-BE-ld1.png
ARM-BE-ldr.png
Atomics.rst fix some various typos in the doc 2016-07-02 19:28:40 +00:00
Benchmarking.rst Add some tips on benchmarking. 2017-05-24 16:39:12 +00:00
BigEndianNEON.rst
BitCodeFormat.rst Add the ShadowCallStack attribute 2018-04-03 20:10:40 +00:00
BlockFrequencyTerminology.rst
BranchWeightMetadata.rst [Doc] Document prof metadata in LangRef 2017-06-15 15:57:12 +00:00
Bugpoint.rst Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
CFIVerify.rst [cfi-verify] Abort on unsupported targets 2018-07-16 15:26:44 +00:00
CMake.rst Remove LLVM_INSTALL_CCTOOLS_SYMLINKS 2018-04-24 15:41:02 +00:00
CMakeLists.txt [dsymutil][doc] Improve wording in manpage and rename file. 2017-11-02 18:44:54 +00:00
CMakePrimer.rst [docs] In the CMake primer, correct the description of the ARGV/ARGN variables. 2017-08-24 05:38:39 +00:00
CodeGenerator.rst [NFC] fix trivial typos in documents 2018-06-15 05:10:09 +00:00
CodeOfConduct.rst [Conduct] Refine what "rare cases" means wrt violations outside our spaces. 2016-07-06 19:32:41 +00:00
CodingStandards.rst [NFC] update coding standard links to HTTPS 2018-05-18 16:44:13 +00:00
CommandLine.rst Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
CompileCudaWithLLVM.rst [Docs] Update docs to indicate that CUDA compilation is supported on Windows. 2017-01-05 16:54:28 +00:00
CompilerWriterInfo.rst [docs] Update CompilerWriterInfo.rst for MIPS 2018-06-14 15:16:37 +00:00
conf.py The trunk version is now 7.0.0svn 2018-01-03 14:52:54 +00:00
Contributing.rst [Docs] Add LLVM for Grad Students to Contributing page. 2018-03-02 14:35:02 +00:00
Coroutines.rst [coroutines] Add support for llvm.coro.noop intrinsics 2018-04-02 16:55:12 +00:00
CoverageMappingFormat.rst [Coverage] Use gap regions to select better line exec counts 2017-09-18 23:37:28 +00:00
DebuggingJITedCode.rst
DeveloperPolicy.rst Fixed broken links in docs. 2017-09-22 21:10:37 +00:00
Docker.rst Migrate dockerfiles to use multi-stage builds. 2018-03-26 15:12:30 +00:00
doxygen-mainpage.dox [docs] Updated docs to work with Doxygen 1.8.11 2016-03-06 03:50:08 +00:00
doxygen.cfg.in [NFC] fix trivial typos in comments and documents 2018-01-26 08:15:29 +00:00
ExceptionHandling.rst [NFC] fix trivial typos in documents and comments 2018-04-12 05:53:20 +00:00
ExtendedIntegerResults.txt
ExtendingLLVM.rst [WinEH] Add llvm.eh.exceptionpointer intrinsic 2015-09-03 09:15:32 +00:00
Extensions.rst docs: document CodeView directives 2018-06-19 16:47:31 +00:00
FAQ.rst fix some typos in the doc 2016-07-28 09:28:58 +00:00
FaultMaps.rst Fix the docs build 2017-02-07 20:36:03 +00:00
FuzzingLLVM.rst [llvm-opt-fuzzer] Introduce llvm-opt-fuzzer for fuzzing optimization passes 2017-11-10 12:19:08 +00:00
GarbageCollection.rst Remove @brief commands from doxygen comments, too. 2018-05-01 16:10:38 +00:00
gcc-loops.png
GetElementPtr.rst [docs] Update code block for compatibility with Sphinx 1.5.1 2017-11-06 11:47:24 +00:00
GettingStarted.rst Document the git config for Windows to do line-endings correctly. 2018-06-27 19:58:28 +00:00
GettingStartedVS.rst [MC] Fix regression tests on Windows when git “core.autocrlf” is set to true. 2017-11-17 21:59:43 +00:00
GlobalISel.rst [globalisel] Add very brief docs summarizing the ISel part of the LLVMDev tutorial. 2017-10-23 17:18:44 +00:00
GoldPlugin.rst Revert "[docs] As of binutils 2.21.51.0.2, ld.bfd supports plugins too, represent this in docs" 2018-07-11 20:08:32 +00:00
HowToAddABuilder.rst Added more info on silent master to the doc. 2017-07-05 20:45:44 +00:00
HowToBuildOnARM.rst [Docs] Change ARM build info to CMake 2015-11-06 18:39:34 +00:00
HowToCrossCompileBuiltinsOnArm.rst [docs][ARM] Add HowTo for cross compiling and testing compiler-rt builtins 2017-11-07 09:40:05 +00:00
HowToCrossCompileLLVM.rst [docs] Fix unexpected indentation in HowToCrossCompileLLVM.rst 2016-05-10 14:02:46 +00:00
HowToReleaseLLVM.rst docs: Fix formatting in HowToReleaseLLVM 2017-09-19 03:27:26 +00:00
HowToSetUpLLVMStyleRTTI.rst [docs][LLVM-style RTTI] Add a mention of multiple inheritance. 2015-02-07 01:16:26 +00:00
HowToSubmitABug.rst [docs] Fix mention of GCC frontend 2018-01-15 17:11:22 +00:00
HowToUseAttributes.rst Fix RST docs AttributeList heading underline 2017-03-21 17:05:00 +00:00
HowToUseInstrMappings.rst [docs] Fixing Sphinx warnings to unclog the buildbot 2016-07-20 12:16:38 +00:00
InAlloca.rst [docs] Fixing Sphinx warnings to unclog the buildbot 2016-07-20 12:16:38 +00:00
index.rst [Docs] Remove some WIP X86 documentation I accidentally leaked into r328031. 2018-03-21 17:32:57 +00:00
LangRef.rst [LangRef] nnan and ninf produce poison. 2018-07-17 20:31:42 +00:00
Lexicon.rst [Lexicon] Add "ICE", internal compiler error 2018-04-05 14:08:16 +00:00
LibFuzzer.rst [libFuzzer] Include TEMP_MAX_LEN in Fuzzer::PrintStats. 2018-02-22 19:00:17 +00:00
LinkTimeOptimization.rst [docs] Typos and whitespace fixed in LTO docs. 2016-11-29 18:00:31 +00:00
linpack-pc.png
LLVMBuild.rst Fix LLVMBuild.txt typo. NFC 2017-04-03 18:21:50 +00:00
LLVMBuild.txt
make.bat
Makefile.sphinx Bring back Makefile.sphinx 2016-03-23 00:30:57 +00:00
MarkedUpDisassembly.rst [docs] Fixing Sphinx warnings to unclog the buildbot 2016-07-20 12:16:38 +00:00
MCJIT-creation.png
MCJIT-dyld-load.png
MCJIT-engine-builder.png
MCJIT-load-object.png
MCJIT-load.png
MCJIT-resolve-relocations.png
MCJITDesignAndImplementation.rst Fix several accidental DOS line endings in source files 2016-01-03 17:22:03 +00:00
MemorySSA.rst [NFC] fix trivial typos in comments and documents 2018-01-26 08:15:29 +00:00
MergeFunctions.rst [docs] Fixing Sphinx warnings to unclog the buildbot 2016-07-20 12:16:38 +00:00
MIRLangRef.rst [NFC] fix trivial typos in documents 2018-06-15 05:10:09 +00:00
NVPTXUsage.rst [CodeGen] Unify MBB reference format in both MIR and debug output 2017-12-04 17:18:51 +00:00
OptBisect.rst Remove opt-bisect support for "cases" in favor of debug counters 2017-03-11 01:41:03 +00:00
Packaging.rst
Passes.rst Another try to commit 323321 (aggressive instruction combine). 2018-01-25 12:06:32 +00:00
Phabricator.rst [docs] Tweak update to Phabricator docs about setting repository for diffs uploaded via web 2018-01-12 15:44:35 +00:00
ProgrammersManual.rst [NFC] fix trivial typos in documents 2018-06-15 05:10:09 +00:00
Projects.rst Rename all references to old mailing lists to new lists.llvm.org address. 2015-08-05 03:51:17 +00:00
re_format.7
README.txt Remove test commit change. 2017-06-24 20:13:32 +00:00
ReleaseNotes.rst [docs] add various sanitisers support for FreeBSD/OpenBSD 2018-06-07 16:33:48 +00:00
ReleaseProcess.rst [docs] Make ReleaseProcess.rst 80 column. NFCI 2018-01-18 14:57:55 +00:00
ReportingGuide.rst fix some various typos in the doc 2016-07-02 19:28:40 +00:00
ScudoHardenedAllocator.rst [docs] Scudo documentation minor update 2018-05-18 17:02:35 +00:00
SegmentedStacks.rst [docs] Fixing Sphinx warnings to unclog the buildbot 2016-07-20 12:16:38 +00:00
SourceLevelDebugging.rst [docs] Update code block for compatibility with Sphinx 1.5.1 2017-11-06 11:47:24 +00:00
SphinxQuickstartTemplate.rst
StackMaps.rst [StackMaps] Increase the size of the "location size" field 2017-04-28 04:48:42 +00:00
Statepoints.rst [docs] change a few code-blocks to llvm from text 2017-07-26 14:11:23 +00:00
SystemLibrary.rst s/LLVM_ON_WIN32/_WIN32/, llvm 2018-04-29 00:45:03 +00:00
TableGenFundamentals.rst
TestingGuide.rst [llvm] Document "%T" as deprecated in TestingGuide.rst 2018-06-19 22:22:48 +00:00
TestSuiteMakefileGuide.rst Fix the docs I broke 2016-03-11 23:31:02 +00:00
TypeMetadata.rst Fixed broken links in docs. 2017-09-22 21:10:37 +00:00
Vectorizers.rst docs: Remove reference to a deprecated flag 2018-01-23 20:22:37 +00:00
WritingAnLLVMBackend.rst [Docs] Fix typo in scheduler model documentation. enumemation->enumeration 2017-12-10 09:14:35 +00:00
WritingAnLLVMPass.rst Fixed dead links in WritingAnLLVMPass.rst 2017-11-06 09:51:39 +00:00
XRay.rst [XRay][compiler-rt+docs] Introduce __xray_log_init_mode(...). 2018-05-04 06:01:12 +00:00
XRayExample.rst Tidy some language in the xray documentation. 2018-05-27 09:19:03 +00:00
XRayFDRFormat.rst Tidy some language in the xray documentation. 2018-05-27 09:19:03 +00:00
yaml2obj.rst Summary: 2015-07-28 16:18:17 +00:00
YamlIO.rst [YAML] Add support for non-printable characters 2017-12-18 17:38:03 +00:00

LLVM Documentation
==================

LLVM's documentation is written in reStructuredText, a lightweight
plaintext markup language (file extension `.rst`). While the
reStructuredText documentation should be quite readable in source form, it
is mostly meant to be processed by the Sphinx documentation generation
system to create HTML pages which are hosted on <http://llvm.org/docs/> and
updated after every commit. Manpage output is also supported, see below.

If you instead would like to generate and view the HTML locally, install
Sphinx <http://sphinx-doc.org/> and then do:

    cd <build-dir>
    cmake -DLLVM_ENABLE_SPHINX=true -DSPHINX_OUTPUT_HTML=true <src-dir>
    make -j3 docs-llvm-html
    $BROWSER <build-dir>/docs//html/index.html

The mapping between reStructuredText files and generated documentation is
`docs/Foo.rst` <-> `<build-dir>/docs//html/Foo.html` <-> `http://llvm.org/docs/Foo.html`.

If you are interested in writing new documentation, you will want to read
`SphinxQuickstartTemplate.rst` which will get you writing documentation
very fast and includes examples of the most important reStructuredText
markup syntax.

Manpage Output
===============

Building the manpages is similar to building the HTML documentation. The
primary difference is to use the `man` makefile target, instead of the
default (which is `html`). Sphinx then produces the man pages in the
directory `<build-dir>/docs/man/`.

    cd <build-dir>
    cmake -DLLVM_ENABLE_SPHINX=true -DSPHINX_OUTPUT_MAN=true <src-dir>
    make -j3 docs-llvm-man
    man -l >build-dir>/docs/man/FileCheck.1

The correspondence between .rst files and man pages is
`docs/CommandGuide/Foo.rst` <-> `<build-dir>/docs//man/Foo.1`.
These .rst files are also included during HTML generation so they are also
viewable online (as noted above) at e.g.
`http://llvm.org/docs/CommandGuide/Foo.html`.

Checking links
==============

The reachability of external links in the documentation can be checked by
running:

    cd docs/
    make -f Makefile.sphinx linkcheck

Doxygen page Output
==============

Install doxygen <http://www.stack.nl/~dimitri/doxygen/download.html> and dot2tex <https://dot2tex.readthedocs.io/en/latest>.

    cd <build-dir>
    cmake -DLLVM_ENABLE_DOXYGEN=On <llvm-top-src-dir>
    make doxygen-llvm # for LLVM docs
    make doxygen-clang # for clang docs

It will generate html in
    
    <build-dir>/docs/doxygen/html # for LLVM docs
    <build-dir>/tools/clang/docs/doxygen/html # for clang docs