llvm-mirror/docs
Kevin Qin 0f6643694d Introduce runtime unrolling disable matadata and use it to mark the scalar loop from vectorization.
Runtime unrolling is an expensive optimization which can bring benefit
only if the loop is hot and iteration number is relatively large enough.
For some loops, we know they are not worth to be runtime unrolled.
The scalar loop from vectorization is one of the cases.

llvm-svn: 231631
2015-03-09 06:14:18 +00:00
..
_static
_templates
_themes/llvm-theme
CommandGuide All FileCheck directives allow patterns. 2015-03-05 23:04:26 +00:00
Frontend Add a few more performance tips 2015-03-05 05:55:55 +00:00
HistoricalNotes
TableGen
tutorial Rename the 'Extending the Language: Debug Information' to 'Adding Debug Information' since this isn't actually modifying/extending the language. 2015-02-07 23:23:43 +00:00
AliasAnalysis.rst
ARM-BE-bitcastfail.png
ARM-BE-bitcastsuccess.png
ARM-BE-ld1.png
ARM-BE-ldr.png
Atomics.rst
BigEndianNEON.rst
BitCodeFormat.rst Misc documentation/comment fixes. 2015-02-04 00:42:45 +00:00
BitSets.rst LowerBitSets: Introduce global layout builder. 2015-02-24 23:17:02 +00:00
BlockFrequencyTerminology.rst
BranchWeightMetadata.rst
Bugpoint.rst
CMake.rst Help: Document how to build and install with CMake. 2015-02-13 16:15:32 +00:00
CMakeLists.txt
CodeGenerator.rst Fix grammar in documentation. 2015-02-19 18:46:25 +00:00
CodingStandards.rst CodingStyle: Allow delegating ctors 2015-03-06 13:46:50 +00:00
CommandLine.rst
CompilerWriterInfo.rst [docs] Add link to the MIPS 64-bit ELF object file specification 2015-01-25 16:20:30 +00:00
conf.py Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CoverageMappingFormat.rst
DebuggingJITedCode.rst
DeveloperPolicy.rst
doxygen.cfg.in
doxygen.css
doxygen.footer
doxygen.header
doxygen.intro
Dummy.html
ExceptionHandling.rst Make llvm.eh.begincatch use an outparam 2015-03-03 17:41:09 +00:00
ExtendedIntegerResults.txt
ExtendingLLVM.rst
Extensions.rst
FAQ.rst
GarbageCollection.rst [GC Docs] Update LangRef to link to Statepoint docs 2015-02-25 23:45:20 +00:00
gcc-loops.png
GetElementPtr.rst Update LangRef for getelementptr explicit type changes 2015-03-04 22:02:58 +00:00
GettingStarted.rst Update the docs to require at least MSVC 2013. 2015-02-15 19:34:17 +00:00
GettingStartedVS.rst Update the docs to require at least MSVC 2013. 2015-02-15 19:34:17 +00:00
GoldPlugin.rst
HowToAddABuilder.rst
HowToBuildOnARM.rst
HowToCrossCompileLLVM.rst
HowToReleaseLLVM.rst
HowToSetUpLLVMStyleRTTI.rst [docs][LLVM-style RTTI] Add a mention of multiple inheritance. 2015-02-07 01:16:26 +00:00
HowToSubmitABug.rst
HowToUseAttributes.rst
HowToUseInstrMappings.rst
InAlloca.rst
index.rst [new docs] Performance Tips for Frontend Authors 2015-02-27 23:14:50 +00:00
LangRef.rst Introduce runtime unrolling disable matadata and use it to mark the scalar loop from vectorization. 2015-03-09 06:14:18 +00:00
Lexicon.rst
LinkTimeOptimization.rst
linpack-pc.png
LLVMBuild.rst
LLVMBuild.txt
make.bat
Makefile [OCaml] Generate documentation again with autoconf buildsystem. 2015-02-28 13:48:23 +00:00
Makefile.sphinx
MakefileGuide.rst
MarkedUpDisassembly.rst
MCJIT-creation.png
MCJIT-dyld-load.png
MCJIT-engine-builder.png
MCJIT-load-object.png
MCJIT-load.png
MCJIT-resolve-relocations.png
MCJITDesignAndImplementation.rst
MergeFunctions.rst
NVPTXUsage.rst
Packaging.rst
Passes.rst Remove the preverify pass from the documentation now that it has been removed 2015-01-30 20:51:09 +00:00
Phabricator.rst
ProgrammersManual.rst docs: Mention that assertions must be enabled to use the -stats flag 2015-02-21 20:53:36 +00:00
Projects.rst
R600Usage.rst
re_format.7
README.txt
ReleaseNotes.rst Add a link to the new PerformanceTips docs from the 3.7 release notes 2015-03-05 05:11:05 +00:00
ReleaseProcess.rst
SegmentedStacks.rst
SourceLevelDebugging.rst DebugInfo: Remove DW_TAG_constant 2015-02-09 22:48:04 +00:00
SphinxQuickstartTemplate.rst
StackMaps.rst [PowerPC] Adjust PatchPoints for ppc64le 2015-01-16 04:40:58 +00:00
Statepoints.rst [GC docs] Add example IR, assembly, and stackmaps to Statepoint documentation 2015-02-26 01:18:21 +00:00
SystemLibrary.rst
TableGenFundamentals.rst
TestingGuide.rst
TestSuiteMakefileGuide.rst
Vectorizers.rst
WritingAnLLVMBackend.rst
WritingAnLLVMPass.rst [PM] Split the LoopInfo object apart from the legacy pass, creating 2015-01-17 14:16:18 +00:00
yaml2obj.rst
YamlIO.rst

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 docs/
    make -f Makefile.sphinx
    $BROWSER _build/html/index.html

The mapping between reStructuredText files and generated documentation is
`docs/Foo.rst` <-> `_build/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/man/`.

    cd docs/
    make -f Makefile.sphinx man
    man -l _build/man/FileCheck.1

The correspondence between .rst files and man pages is
`docs/CommandGuide/Foo.rst` <-> `_build/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 reachibility of external links in the documentation can be checked by
running:

    cd docs/
    make -f Makefile.sphinx linkcheck