llvm-project/llvm/docs
Fraser Cormack 8002fa6760 [LangRef] Remove incorrect vector alignment rules
The LangRef incorrectly says that if no exact match is found when
seeking alignment for a vector type, the largest vector type smaller
than the sought-after vector type. This is incorrect as vector types
require an exact match, else they fall back to reporting the natural
alignment.

The corrected rule was not added in its place, as rules for other types
(e.g., floating-point types) aren't documented.

A unit test was added to demonstrate this.

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D112463
2021-12-14 14:35:40 +00:00
..
AMDGPU [AMDGPU][MC][NFC][DOC] Updated description of registers 2021-09-03 13:09:54 +03:00
AMDGPUDwarfExtensionAllowLocationDescriptionOnTheDwarfExpressionStack [AMDGPU][NFC] Add documentation for location description DWARF extension 2021-12-14 00:58:17 +00:00
CommandGuide [llvm-readobj] Add JSONScopedPrinter to llvm-readelf 2021-12-10 23:34:27 +00:00
DependenceGraphs [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
Frontend [llvm] Fix typos in documentation (NFC) 2021-02-27 10:09:23 -08:00
GlobalISel [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
HistoricalNotes
PDB [NFC][llvm] Inclusive language: replace master in llvm docs 2021-11-25 13:36:51 -06:00
Proposals [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
TableGen [NFC][llvm] Inclusive language: replace master in llvm docs 2021-11-25 13:36:51 -06:00
_ocamldoc
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tutorial [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
AMDGPUDwarfExtensionsForHeterogeneousDebugging.rst [NFC][AMDGPU] Correct typo in DWARF Extensions For Heterogeneous Debugging 2021-03-09 00:23:23 +00:00
AMDGPUInstructionNotation.rst [AMDGPU][MC][NFC][DOC] Updated AMD GPU assembler syntax description. 2021-08-27 17:23:20 +03:00
AMDGPUInstructionSyntax.rst [AMDGPU][MC][NFC][DOC] Updated AMD GPU assembler syntax description. 2021-08-27 17:23:20 +03:00
AMDGPUModifierSyntax.rst [AMDGPU][MC][NFC][DOC] Updated AMD GPU assembler syntax description. 2021-08-27 17:23:20 +03:00
AMDGPUOperandSyntax.rst [AMDGPU][MC][NFC][DOC] Updated description of registers 2021-09-03 13:09:54 +03:00
AMDGPUUsage.rst [AMDGPU][NFC] Add documentation for location description DWARF extension 2021-12-14 00:58:17 +00:00
ARM-BE-bitcastfail.png
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AddingConstrainedIntrinsics.rst
AdvancedBuilds.rst Update documentation and implementation of stage3 build 2020-10-08 07:55:37 +02:00
AliasAnalysis.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
Atomics.rst [AArch64] Out-of-line atomics (-moutline-atomics) implementation. 2020-11-20 13:30:12 +00:00
Benchmarking.rst
BigEndianNEON.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
BitCodeFormat.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
BlockFrequencyTerminology.rst
BranchWeightMetadata.rst
BugLifeCycle.rst [docs] Fix typos 2020-08-09 19:31:49 -07:00
Bugpoint.rst
BugpointRedesign.md
BuildingADistribution.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
CFIVerify.rst
CMake.rst Revert "Revert "Revert "Use `GNUInstallDirs` to support custom installation dirs. -- LLVM""" 2021-12-10 17:33:54 -08:00
CMakeLists.txt
CMakePrimer.rst [CMake] Bump CMake minimum version to 3.13.4 2020-07-22 14:25:07 -04:00
CodeGenerator.rst [docs][GISel]Added GISel documentation link 2021-06-24 00:55:00 +05:30
CodeOfConduct.rst
CodeReview.rst [docs] Set Phabricator as the tool for pre-commit reviews 2021-06-07 11:50:52 -05:00
CodingStandards.rst [doc] Fix namespace comment style in Coding Guidelines 2021-12-07 13:36:25 +00:00
CommandLine.rst Use ManagedStatic and lazy initialization of cl::opt in libSupport to make it free of global initializer 2021-07-16 07:38:16 +00:00
CompileCudaWithLLVM.rst [CUDA] Bump supported CUDA version to 11.5 2021-11-09 08:20:53 +00:00
CompilerWriterInfo.rst [XCore][docs] Fix XCore compiler writer documentation links. 2020-12-08 12:21:09 +00:00
Contributing.rst [docs] Fix up dead clang-format links after monorepo move. NFC 2021-03-30 14:29:35 -07:00
Coroutines.rst [NFC] Format the newly added table for coro.end in coroutines.rst 2021-12-10 15:24:26 +08:00
CoverageMappingFormat.rst [Coverage] Store compilation dir separately in coverage mapping 2021-02-18 14:34:39 -08:00
CycleTerminology.rst Reapply CycleInfo: Introduce cycles as a generalization of loops 2021-12-10 14:36:43 +05:30
DebuggingJITedCode.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
DeveloperPolicy.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
Docker.rst
ExceptionHandling.rst [docs] Fix typos 2020-08-09 19:31:49 -07:00
ExtendedIntegerResults.txt
ExtendingLLVM.rst [docs] Update ExtendingLLVM.rst 2020-09-21 16:49:48 -07:00
Extensions.rst [X86] Selective relocation relaxation for +tagged-globals 2021-11-19 07:18:27 -08:00
FAQ.rst Update references to 'master' branch. 2020-12-21 19:10:34 +00:00
FaultMaps.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
FuzzingLLVM.rst
GarbageCollection.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
GetElementPtr.rst
GettingInvolved.rst [docs] Add Loop Optimization WG to the online sync-up page 2021-11-18 16:49:11 -05:00
GettingStarted.rst Officially deprecate LLVM_ENABLE_PROJECTS for libc++, libc++abi and libunwind 2021-10-29 08:53:03 -04:00
GettingStartedTutorials.rst [docs] Add a new tutorial that talk about how to make a change to llvm 2021-08-30 07:01:04 +00:00
GettingStartedVS.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
GitBisecting.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
GitRepositoryPolicy.md first draft of a written policy around git repos 2021-10-19 08:05:37 +00:00
GoldPlugin.rst
GwpAsan.rst
HowToAddABuilder.rst [docs] Incorprate first round of feedback on D114325 2021-11-22 11:02:38 -08:00
HowToBuildOnARM.rst Remove Python2 fallback and only advertise Python3 in the doc 2020-12-17 15:40:16 +01:00
HowToBuildWindowsItaniumPrograms.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
HowToBuildWithPGO.rst docs: Add pointer to cmake caches for PGO 2020-12-07 15:55:26 -05:00
HowToCrossCompileBuiltinsOnArm.rst [test] Migrate -gcc-toolchain with space separator to --gcc-toolchain= 2021-08-20 15:24:58 -07:00
HowToCrossCompileLLVM.rst
HowToReleaseLLVM.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
HowToSetUpLLVMStyleRTTI.rst [docs] Fix typos 2020-08-09 19:31:49 -07:00
HowToSubmitABug.rst [Docs] Update HowToSubmitABug 2021-02-02 21:19:20 -08:00
HowToUpdateDebugInfo.rst Recommit: "[Debugify][Original DI] Test dbg var loc preservation"" 2021-05-21 02:04:29 -07:00
HowToUseAttributes.rst
HowToUseInstrMappings.rst
InAlloca.rst
JITLink.rst Fix some typos in the llvm docs 2021-08-31 21:31:20 +02:00
LangRef.rst [LangRef] Remove incorrect vector alignment rules 2021-12-14 14:35:40 +00:00
Lexicon.rst [llvm] Fix typos in documentation (NFC) 2021-02-27 10:09:23 -08:00
LibFuzzer.rst [libfuzzer] Update doc mentioning removed flags. 2021-05-18 22:40:42 -07:00
LinkTimeOptimization.rst
LoopTerminology.rst [LCSSA] Doc for special treatment of PHIs 2020-10-29 22:50:07 +02:00
MCJIT-creation.png
MCJIT-dyld-load.png
MCJIT-engine-builder.png
MCJIT-load-object.png
MCJIT-load.png
MCJIT-resolve-relocations.png
MCJITDesignAndImplementation.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
MIRLangRef.rst [MIRParser] Add support for IsInlineAsmBrIndirectTarget 2021-10-07 19:08:01 +01:00
MarkdownQuickstartTemplate.md [doc] added section on generating the html doc 2021-08-09 07:27:56 +00:00
MarkedUpDisassembly.rst
MeetupGuidelines.rst
MemTagSanitizer.rst
MemorySSA.rst [MemorySSA] Document details regarding MemorySSA's precision. 2021-12-13 16:49:24 -08:00
MergeFunctions.rst [llvm] Fix typos in documentation (NFC) 2021-02-27 10:09:23 -08:00
MyFirstTypoFix.rst [docs] Update outdated mentions of lab.llvm.org:8011. 2021-11-18 10:51:47 +00:00
NVPTXUsage.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
NewPassManager.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
ORCv2.rst [Docs][ORCv2] GetForCurrentProcess now returns an Expected<std::unique_ptr>. NFC 2021-12-10 14:21:28 -08:00
OpaquePointers.rst [docs][OpaquePtr] Remove finished task 2021-07-14 14:36:41 -07:00
OptBisect.rst
Packaging.rst
Passes.rst Fix some typos in the llvm docs 2021-08-31 21:31:20 +02:00
Phabricator.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
Phabricator_premerge_results.png [doc] added documentation for pre-merge testing 2021-04-27 16:53:16 +02:00
Phabricator_premerge_unit_tests.png [doc] added documentation for pre-merge testing 2021-04-27 16:53:16 +02:00
PointerAuth.md [IR] Define ptrauth intrinsics. 2021-11-14 07:59:00 -08:00
ProgrammersManual.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
Projects.rst [NFC][llvm] Inclusive language: replace master in llvm docs 2021-11-25 13:36:51 -06:00
README.txt Replace references to Makefile.sphinx 2021-10-22 15:32:12 +02:00
Reference.rst [IR] Define ptrauth intrinsics. 2021-11-14 07:59:00 -08:00
ReleaseNotes.rst Add PACBTI-M support to LLVM release notes. 2021-12-10 11:53:42 +00:00
ReleaseProcess.rst
Remarks.rst
ReportingGuide.rst
ScudoHardenedAllocator.rst [llvm] Fix typos in documentation (NFC) 2021-08-28 06:37:03 -07:00
Security.rst Adding an Nvidia representative to security group 2021-08-18 12:08:11 +02:00
SegmentedStacks.rst
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StackMaps.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
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SupportLibrary.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
SupportPolicy.rst [docs] Adding a Support Policy 2020-11-07 21:06:05 +00:00
SystemLibrary.rst
TableGenFundamentals.rst
TestSuiteGuide.md [docs] Add the compiler-rt requirement to the test suite doc 2021-07-22 16:03:45 -07:00
TestSuiteMakefileGuide.rst
TestingGuide.rst [docs] Mention --leading-lines instead of --no-leading-lines 2021-11-03 10:21:13 -07:00
TransformMetadata.rst Insert missing bracket in docs. 2020-09-08 15:20:39 -07:00
TypeMetadata.rst Update references to 'master' branch. 2020-12-21 19:10:34 +00:00
UserGuides.rst [AMDGPU][NFC] Add documentation for location description DWARF extension 2021-12-14 00:58:17 +00:00
Vectorizers.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
WritingAnLLVMBackend.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
WritingAnLLVMNewPMPass.rst [docs] Add documentation on using the new pass manager 2021-02-26 15:28:19 -08:00
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XRay.rst [xray] Fix xray document spelling 2021-03-10 16:03:55 +11:00
XRayExample.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
XRayFDRFormat.rst
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buildbot_worker_contact.png added section on CI system 2021-04-21 09:59:41 +02:00
conf.py [llvm][docs] Bump release number from 12 -> 13 2021-07-01 11:07:03 +00:00
cycle-1.png Reapply CycleInfo: Introduce cycles as a generalization of loops 2021-12-10 14:36:43 +05:30
cycle-2.png Reapply CycleInfo: Introduce cycles as a generalization of loops 2021-12-10 14:36:43 +05:30
cycle-3.png Reapply CycleInfo: Introduce cycles as a generalization of loops 2021-12-10 14:36:43 +05:30
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doxygen.cfg.in [NFC] Inclusive Language: change master to main for .chm files 2021-11-08 08:23:04 -06:00
epilogue-vectorization-cfg.png [LV] Epilogue Vectorization with Optimal Control Flow (Recommit) 2020-12-02 10:09:56 -05:00
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index.rst [docs] LLVM Security Group and Process 2020-07-10 15:24:02 -07:00
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llvm-objdump.1 [llvm-objdump] Implement --prefix-strip option 2021-03-24 13:22:35 +00:00
loop-guard.svg [docs] Revise loop terminology reference. 2020-10-05 10:28:04 -05:00
loop-irreducible.svg [docs] Revise loop terminology reference. 2020-10-05 10:28:04 -05:00
loop-merge.svg [docs] Revise loop terminology reference. 2020-10-05 10:28:04 -05:00
loop-nested.svg [docs] Revise loop terminology reference. 2020-10-05 10:28:04 -05:00
loop-nonmaximal.svg [docs] Revise loop terminology reference. 2020-10-05 10:28:04 -05:00
loop-separate.svg [docs] Revise loop terminology reference. 2020-10-05 10:28:04 -05:00
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README.txt

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 llvm/docs/
    sphinx-build -b linkcheck . _build/lintcheck/
    # report will be generated in _build/lintcheck/output.txt

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

Install doxygen <https://www.doxygen.nl/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