llvm-mirror/docs
Jay Foad a40d0145c8 [GlobalISel] Add generic opcodes for saturating add/subtract
Summary:
Add new generic MIR opcodes G_SADDSAT etc. Add support in IRTranslator
for translating the saturating add/subtract intrinsics to the new
opcodes.

Reviewers: aemerson, dsanders, paquette, arsenm

Subscribers: jvesely, wdng, nhaehnle, rovka, hiraditya, volkan, kerbowa, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76600
2020-03-23 15:16:45 +00:00
..
_ocamldoc
_static
_templates [www] More HTTPS and outdated link fixes. 2019-11-08 14:41:27 -08:00
_themes/llvm-theme [Docs] Updates sidebar links and sets max-width property for div.body 2019-10-15 21:27:20 +00:00
AMDGPU [AMDGPU][MC][DOC] Updated AMD GPU assembler syntax description. 2020-02-07 16:23:46 +03:00
CommandGuide doc: use the right url to bugzilla 2020-03-22 22:49:40 +01:00
DependenceGraphs [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
Frontend update of the llvm doc: we moved to git 2020-03-22 22:36:21 +01:00
GlobalISel [GlobalISel] Add generic opcodes for saturating add/subtract 2020-03-23 15:16:45 +00:00
HistoricalNotes Doc: Links should use https 2020-03-22 22:49:33 +01:00
PDB Fix a few spellos in docs. 2019-09-13 14:58:24 +00:00
Proposals Doc: Links should use https 2020-03-22 22:49:33 +01:00
TableGen Doc: Links should use https 2020-03-22 22:49:33 +01:00
tutorial Doc: Links should use https 2020-03-22 22:49:33 +01:00
AddingConstrainedIntrinsics.rst [FEnv] Fix AddingConstrainedIntrinsics.rst after llvmorg-10-init-10282-g0c50c0b0552 2019-11-19 23:09:13 -08:00
AdvancedBuilds.rst Use backquotes to avoid a sphinx unexpected error: 2018-12-16 14:19:39 +00:00
AliasAnalysis.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
AMDGPUInstructionNotation.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler description. 2018-12-28 11:48:23 +00:00
AMDGPUInstructionSyntax.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler syntax description. 2019-07-08 16:50:11 +00:00
AMDGPUModifierSyntax.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler syntax description. 2019-12-25 17:51:53 +03:00
AMDGPUOperandSyntax.rst [AMDGPU][MC][DOC] Updated AMD GPU assembler syntax description. 2019-12-25 17:51:53 +03:00
AMDGPUUsage.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
ARM-BE-bitcastfail.png
ARM-BE-bitcastsuccess.png
ARM-BE-ld1.png
ARM-BE-ldr.png
Atomics.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
Benchmarking.rst
BigEndianNEON.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
BitCodeFormat.rst [X86] Add new calling convention that guarantees tail call optimization 2019-10-07 22:28:58 +00:00
BlockFrequencyTerminology.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
BranchWeightMetadata.rst [TI removal] Remove discussion of TerminatorInst from the LLVM 2018-10-18 07:40:24 +00:00
BugLifeCycle.rst Introduce bug life cycle documentation. 2018-11-07 08:49:36 +00:00
Bugpoint.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
BugpointRedesign.md [Bugpoint redesign] Fix nonlocal URI link in doc 2019-08-09 21:48:47 +00:00
BuildingADistribution.rst Remove AllTargetsAsmPrinters 2020-01-17 19:04:06 -05:00
CFIVerify.rst [cfi-verify] Abort on unsupported targets 2018-07-16 15:26:44 +00:00
CMake.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
CMakeLists.txt
CMakePrimer.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
CodeGenerator.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
CodeOfConduct.rst
CodeReview.rst High-Level Code-Review Documentation Update 2020-03-07 04:20:18 +00:00
CodingStandards.rst Add coding standard recommending use of qualifiers in cpp files 2020-02-18 14:08:56 -08:00
CommandLine.rst [CommandLine] Add callbacks to Options 2019-12-06 15:16:45 -08:00
CompileCudaWithLLVM.rst doc: use the right url to bugzilla 2020-03-22 22:49:40 +01:00
CompilerWriterInfo.rst [PowerPC][docs] Update Embedded PowerPC docs in Compiler Writers Info page 2019-12-30 20:22:37 +00:00
conf.py [Docs] Add a custom sidebar to doc pages 2019-09-20 22:16:39 +00:00
Contributing.rst High-Level Code-Review Documentation Update 2020-03-07 04:20:18 +00:00
Coroutines.rst fix another doc typo to cycle bots 2019-12-20 21:59:51 -05:00
CoverageMappingFormat.rst Reland: [Coverage] Revise format to reduce binary size 2020-02-28 18:12:04 -08:00
DebuggingJITedCode.rst [docs] Fix references to a renamed flag. 2019-11-06 14:42:57 -08:00
DeveloperPolicy.rst High-Level Code-Review Documentation Update 2020-03-07 04:20:18 +00:00
Docker.rst update of the llvm doc: we moved to git 2020-03-22 22:36:21 +01:00
doxygen-mainpage.dox
doxygen.cfg.in [docs] update mathjax path in doxygen 2020-02-07 16:26:35 +00:00
ExceptionHandling.rst Remove extra "\01" prefix in EH docs 2020-01-19 08:20:17 -08:00
ExtendedIntegerResults.txt
ExtendingLLVM.rst Note ImmArg in documentation for adding intrinsics 2019-03-14 13:46:17 +00:00
Extensions.rst [Frontend] Replace CC1 option -mcode-model with -mcmodel= 2020-02-21 23:10:50 -08:00
FAQ.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
FaultMaps.rst
FuzzingLLVM.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
GarbageCollection.rst [AsmPrinter] De-capitalize all AsmPrinter::Emit* but EmitInstruction 2020-02-13 17:06:24 -08:00
gcc-loops.png
GetElementPtr.rst [DOC] Fix load instructions' syntax, function definition. 2019-06-12 11:24:22 +00:00
GettingInvolved.rst Add the CodeReview Documentation to GettingInvolved TOC 2020-03-07 04:55:46 +00:00
GettingStarted.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
GettingStartedTutorials.rst [Docs] Adds Documentation links to sidebar 2019-10-09 20:26:13 +00:00
GettingStartedVS.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
GitBisecting.rst git bisect docs: formatting tweaks 2020-02-10 15:47:59 -05:00
GoldPlugin.rst [docs][gold] Fix a typo 2018-08-21 21:00:54 +00:00
GwpAsan.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
HowToAddABuilder.rst wrap an rst file to 80 cols, to cycle bots 2019-12-06 17:28:02 -05:00
HowToBuildOnARM.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
HowToBuildWithPGO.rst [docs] NFC: Fix typos in documents 2020-01-07 16:06:14 +01:00
HowToCrossCompileBuiltinsOnArm.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
HowToCrossCompileLLVM.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
HowToReleaseLLVM.rst Remove some autoconf references from docs and comments 2019-07-03 09:57:59 +00:00
HowToSetUpLLVMStyleRTTI.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
HowToSubmitABug.rst update of the llvm doc: we moved to git 2020-03-22 22:36:21 +01:00
HowToUseAttributes.rst
HowToUseInstrMappings.rst
InAlloca.rst
index.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
LangRef.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
Lexicon.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
LibFuzzer.rst doc: use the right url to bugzilla 2020-03-22 22:49:40 +01:00
LinkTimeOptimization.rst [LTO][Legacy] Add new API to query Mach-O CPU (sub)type 2020-02-28 12:56:05 -08:00
linpack-pc.png
llvm-objdump.1 Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LLVMBuild.rst
LLVMBuild.txt Doc: Links should use https 2020-03-22 22:49:33 +01:00
loop-terminology-guarded-loop.png [LoopTerminology] Rotated Loops images 2020-03-17 01:02:19 +02:00
loop-terminology-initial-loop.png [LoopTerminology] Rotated Loops images 2020-03-17 01:02:19 +02:00
loop-terminology-rotated-loop.png [LoopTerminology] Rotated Loops images 2020-03-17 01:02:19 +02:00
LoopTerminology.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
make.bat
Makefile.sphinx
MarkdownQuickstartTemplate.md Doc: Links should use https 2020-03-22 22:49:33 +01:00
MarkedUpDisassembly.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
MCJIT-creation.png
MCJIT-dyld-load.png
MCJIT-engine-builder.png
MCJIT-load-object.png
MCJIT-load.png
MCJIT-resolve-relocations.png
MCJITDesignAndImplementation.rst
MeetupGuidelines.rst Add guidelines/recommendations for organizers of LLVM Socials 2019-05-14 07:20:58 +00:00
MemorySSA.rst
MemTagSanitizer.rst Fix MemTagSanitizer docs to point at Armv8.5-A MTE 2020-03-05 17:23:58 +00:00
MergeFunctions.rst MergeFunctions.rst - multiply vs shift typo (PR44717) 2020-03-23 10:13:25 +00:00
MIRLangRef.rst [globalisel][docs] Rework GMIR documentation and add an early GenericOpcode reference 2019-11-05 15:16:43 -08:00
NVPTXUsage.rst
OptBisect.rst [LegacyPassManager] Delete BasicBlockPass/Manager. 2019-10-30 11:40:16 -07:00
ORCv2.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
Packaging.rst update of the llvm doc: we moved to git 2020-03-22 22:36:21 +01:00
Passes.rst [LoopTerminology] Rotated Loops 2020-03-17 00:54:26 +02:00
Phabricator.rst phab doc: Replace or remove references to svn 2020-01-09 22:29:20 +01:00
ProgrammersManual.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
Projects.rst
re_format.7
README.txt Doc: Links should use https 2020-03-22 22:49:33 +01:00
Reference.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
ReleaseNotes.rst [AVR] Add a release note about the AVR backend becoming an official backend 2020-03-16 20:07:59 +13:00
ReleaseProcess.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
Remarks.rst [Remarks] Extend the RemarkStreamer to support other emitters 2020-02-04 17:16:02 -08:00
ReportingGuide.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
ScudoHardenedAllocator.rst [docs] Scudo: document error messages & their potential cause 2019-01-22 16:43:45 +00:00
SegmentedStacks.rst
SourceLevelDebugging.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
speculative_load_hardening_microbenchmarks.png [x86/SLH] Add the design document for Speculative Load Hardening, 2018-07-18 14:05:14 +00:00
SpeculativeLoadHardening.md Fix a few spellos in docs. 2019-09-13 14:58:24 +00:00
SphinxQuickstartTemplate.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
StackMaps.rst [docs] Clarify ELF section naming for StackMaps and fix a typo 2018-11-08 17:20:35 +00:00
StackSafetyAnalysis.rst Remove trailing empty line 2018-11-26 23:17:52 +00:00
Statepoints.rst [docs][statepoints] Reformulate open issues list 2018-11-09 17:09:16 +00:00
SupportLibrary.rst [Docs] [Support] Correct a missed reference and use up to date .inc examples. 2018-09-21 01:53:51 +00:00
SystemLibrary.rst [Docs] [Support] System Library to Support Library transition along with minor corrections to reflect it. 2018-09-18 18:05:38 +00:00
TableGenFundamentals.rst
TestingGuide.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
TestSuiteGuide.md Doc: Links should use https 2020-03-22 22:49:33 +01:00
TestSuiteMakefileGuide.rst Adjust documentation for git migration. 2019-01-29 16:37:27 +00:00
TransformMetadata.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
TypeMetadata.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
UserGuides.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
Vectorizers.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
WritingAnLLVMBackend.rst Update spelling of {analyze,insert,remove}Branch in strings and comments 2020-01-21 10:15:38 -06:00
WritingAnLLVMPass.rst Doc: Links should use https 2020-03-22 22:49:33 +01:00
XRay.rst [Docs] Update of Xray page 2018-07-26 04:44:31 +00:00
XRayExample.rst [XRay][docs] Fix option name 2019-03-12 13:44:42 +00:00
XRayFDRFormat.rst [llvm] NFC: fix trivial typos in documents 2020-01-22 11:32:51 +08:00
yaml2obj.rst
YamlIO.rst remove a trailing space character (test commit) 2020-01-27 15:01:55 -08:00

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 <https://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` <-> `https://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.
`https://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