llvm-6502/docs
Hal Finkel 66d1fa6f4b Add a llvm.copysign intrinsic
This adds a llvm.copysign intrinsic; We already have Libfunc recognition for
copysign (which is turned into the FCOPYSIGN SDAG node). In order to
autovectorize calls to copysign in the loop vectorizer, we need a corresponding
intrinsic as well.

In addition to the expected changes to the language reference, the loop
vectorizer, BasicTTI, and the SDAG builder (the intrinsic is transformed into
an FCOPYSIGN node, just like the function call), this also adds FCOPYSIGN to a
few lists in LegalizeVector{Ops,Types} so that vector copysigns can be
expanded.

In TargetLoweringBase::initActions, I've made the default action for FCOPYSIGN
be Expand for vector types. This seems correct for all in-tree targets, and I
think is the right thing to do because, previously, there was no way to generate
vector-values FCOPYSIGN nodes (and most targets don't specify an action for
vector-typed FCOPYSIGN).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188728 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-19 23:35:46 +00:00
..
_static
_templates
_themes/llvm-theme
CommandGuide docs: command guide: cleanups, no text changes 2013-08-18 08:32:32 +00:00
HistoricalNotes [typo] An LLVM. 2013-08-16 23:30:19 +00:00
TableGen Allow TableGen DAG arguments to be just a name. 2013-03-24 19:36:51 +00:00
tutorial [docs] Fix broken link. 2013-06-21 01:11:52 +00:00
AliasAnalysis.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
Atomics.rst Small correction to unordered memory code generation of ARM LDRD 2013-06-18 23:07:16 +00:00
BitCodeFormat.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
BranchWeightMetadata.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
Bugpoint.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
CMake.rst docs: Update old VS 2008 references. 2013-07-23 17:44:01 +00:00
CodeGenerator.rst Remove the mblaze backend from llvm. 2013-07-25 18:55:05 +00:00
CodingStandards.rst Add the common begin/end naming convention to the coding standard. 2013-08-07 19:34:37 +00:00
CommandLine.rst CommandLine.rst: remove tiny bit of bad mark-up 2013-07-10 22:09:22 +00:00
CompilerWriterInfo.rst R600: Add ISA documents to the CompilerWriterInfo page 2013-07-12 18:14:40 +00:00
conf.py We're in 3.4 land now. 2013-05-07 20:31:28 +00:00
DebuggingJITedCode.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
DeveloperPolicy.rst Grammar and punctuation fixes. 2013-04-15 17:38:06 +00:00
doxygen.cfg.in
doxygen.css
doxygen.footer
doxygen.header
doxygen.intro
Dummy.html
ExceptionHandling.rst Documentation: use monospaced font for intrinsics' names 2013-01-13 16:07:49 +00:00
ExtendedIntegerResults.txt
ExtendingLLVM.rst Fix documentation on the path to Bitcode reader/writer 2013-06-11 18:09:21 +00:00
Extensions.rst Sphinx refuses to render this code block. Try adding a newline. 2013-08-14 16:18:47 +00:00
FAQ.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
GarbageCollection.rst IR headers moved to llvm/IR some aeons ago, update documentation. 2013-07-08 19:59:35 +00:00
gcc-loops.png Update the gcc-loops benchmark 2013-01-20 07:01:04 +00:00
GetElementPtr.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
GettingStarted.rst [typo] An LLVM. 2013-08-16 23:30:19 +00:00
GettingStartedVS.rst [typo] An LLVM. 2013-08-16 23:30:19 +00:00
GoldPlugin.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
HowToAddABuilder.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
HowToBuildOnARM.rst ARM build docs easier for copy&paste 2013-02-25 18:25:58 +00:00
HowToReleaseLLVM.rst Typo 2013-05-28 11:28:37 +00:00
HowToSetUpLLVMStyleRTTI.rst [docs] Discuss a potential bug to be aware of. 2013-03-16 16:58:20 +00:00
HowToSubmitABug.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
HowToUseAttributes.rst Documentation: HowToUseAttributes: formatting (use monospaced font) 2013-02-12 18:26:08 +00:00
HowToUseInstrMappings.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
index.rst Linking ReleaseProcess doc with the world 2013-05-28 10:32:55 +00:00
LangRef.rst Add a llvm.copysign intrinsic 2013-08-19 23:35:46 +00:00
Lexicon.rst [docs] PR15254: Add "AST" to the lexicon. 2013-02-13 21:17:20 +00:00
LinkTimeOptimization.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
linpack-pc.png Update the linpack benchmark with different array sizes. 2013-01-20 06:52:47 +00:00
LLVMBuild.rst Fix grammar in LLVMBuild.rst 2013-04-18 16:39:32 +00:00
LLVMBuild.txt
make.bat
Makefile
Makefile.sphinx
MakefileGuide.rst Remove dead code from the makefile build system. 2013-07-25 20:25:31 +00:00
MarkedUpDisassembly.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
NVPTXUsage.rst Add start of user documentation for NVPTX 2013-03-30 16:41:14 +00:00
Packaging.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
Passes.rst docs/Passes: fix some typos 2013-05-18 18:01:44 +00:00
Phabricator.rst Phabricator.rst: tiny fix 2013-07-25 22:58:31 +00:00
ProgrammersManual.rst IR headers moved to llvm/IR some aeons ago, update documentation. 2013-07-08 19:59:35 +00:00
Projects.rst Documentation: remove all mentions of DejaGNU and Tcl 2013-01-18 19:27:43 +00:00
re_format.7
README.txt [docs] Discuss manpage output. 2013-02-27 18:48:42 +00:00
ReleaseNotes.rst Add a release not about llvm-ar. 2013-08-06 13:16:28 +00:00
ReleaseProcess.rst Update Release Process doc 2013-06-12 11:35:33 +00:00
SegmentedStacks.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
SourceLevelDebugging.rst Debug Info: Update documentation to match recent (& not so recent) schema changes 2013-05-29 02:05:13 +00:00
SphinxQuickstartTemplate.rst [docs] Provide pointer for building Sphinx docs. 2013-02-27 18:33:21 +00:00
SystemLibrary.rst
TableGenFundamentals.rst [docs] Guide prospective TableGen backend writers. 2013-01-30 20:39:46 +00:00
TestingGuide.rst [docs] Update TestingGuide's note on how to run with Valgrind. 2013-08-09 19:39:48 +00:00
TestSuiteMakefileGuide.rst
Vectorizers.rst Update the docs. 2013-08-05 04:27:34 +00:00
WritingAnLLVMBackend.rst Revert "TableGen: Enumerate Schedule Model too." 2013-07-31 20:43:08 +00:00
WritingAnLLVMPass.rst IR headers moved to llvm/IR some aeons ago, update documentation. 2013-07-08 19:59:35 +00:00
yaml2obj.rst docs: Fix long standing linking antipattern. 2013-01-11 02:28:08 +00:00
YamlIO.rst [typo] An LLVM. 2013-08-16 23:30:19 +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 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`.