DirectXShaderCompiler/docs
Greg Roth 3bd5f9ccfa
Errors on non-immediate load/gather offsets (#3283)
Gather operations that take four separate offsets are meant to allow for
programmable, non-immediate values. This removes them from the immediate
and range validations by giving the immediate versions their own opcodes
For these intrinsics and loads, errors are generated when offsets are non-literal
or out of range. These largely use the slightly altered validation paths that the
sample intrinsics use.

Reword error when texture access offsets are not immediates to be
more all encompassing and grammatical.

Incidentally remove duplicate shaders being used for the validation
test from the old directory while identical copies in the validation
directory went unused. Redirected validation test to the appropriate
copies. This is consistent with the test shader re-org's stated intent

Sample operations have a maximum of 3 args, but gather has a maximum of
two since it always operates on 2D images. So gather operations only
pass in two offset args to the offset validation, which resulted in an
invalid access.

Rather than adding a specialized condition to evade this, just iterate
over the number of elements in the array. For sample it will be 3 and
for gather 2 and it will still check for expected undefined args
appropriately.

For the offset legalization pass, the opcode is used to determine the
start and end of the offset args

Only produce the loop unroll suggestion when within a loop

Base error line on call instruction instead of source of the offset

Sort by location in source when possible and remove duplicates

Adapt tests to verify and match these changes

Fixes #2590
Fixes #2713
2021-03-02 18:42:09 -08:00
..
CommandGuide first commit 2016-12-28 11:52:27 -08:00
Frontend first commit 2016-12-28 11:52:27 -08:00
TableGen first commit 2016-12-28 11:52:27 -08:00
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_templates first commit 2016-12-28 11:52:27 -08:00
_themes/dxc-theme first commit 2016-12-28 11:52:27 -08:00
AliasAnalysis.rst first commit 2016-12-28 11:52:27 -08:00
Atomics.rst first commit 2016-12-28 11:52:27 -08:00
BitCodeFormat.rst first commit 2016-12-28 11:52:27 -08:00
BitSets.rst first commit 2016-12-28 11:52:27 -08:00
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CodeGenerator.rst first commit 2016-12-28 11:52:27 -08:00
CodingStandards.rst fixes #37 - License cleanup. 2017-01-27 16:48:08 -08:00
CommandLine.rst first commit 2016-12-28 11:52:27 -08:00
CoverageMappingFormat.rst first commit 2016-12-28 11:52:27 -08:00
DXIL.rst Errors on non-immediate load/gather offsets (#3283) 2021-03-02 18:42:09 -08:00
Dummy.html first commit 2016-12-28 11:52:27 -08:00
DxcOnUnix.rst Force cmake to use python3 (#2187) 2019-05-15 09:56:11 -04:00
ExceptionHandling.rst first commit 2016-12-28 11:52:27 -08:00
ExtendingLLVM.rst first commit 2016-12-28 11:52:27 -08:00
FaultMaps.rst first commit 2016-12-28 11:52:27 -08:00
GetElementPtr.rst first commit 2016-12-28 11:52:27 -08:00
HLSLChanges.rst first commit 2016-12-28 11:52:27 -08:00
HowToSetUpLLVMStyleRTTI.rst first commit 2016-12-28 11:52:27 -08:00
HowToUseAttributes.rst first commit 2016-12-28 11:52:27 -08:00
HowToUseInstrMappings.rst first commit 2016-12-28 11:52:27 -08:00
InAlloca.rst first commit 2016-12-28 11:52:27 -08:00
LLVMBuild.rst first commit 2016-12-28 11:52:27 -08:00
LLVMBuild.txt Revert license text in banner comments to original llvm verbage (#33) 2017-01-24 17:54:00 -08:00
LangRef.rst first commit 2016-12-28 11:52:27 -08:00
Lexicon.rst first commit 2016-12-28 11:52:27 -08:00
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MergeFunctions.rst first commit 2016-12-28 11:52:27 -08:00
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ProgrammersManual.rst first commit 2016-12-28 11:52:27 -08:00
README.txt first commit 2016-12-28 11:52:27 -08:00
SPIR-V.rst [spirv] Add vk::image_format attribute for Buffers, RWBuffers and RWTextures (#3395) 2021-03-01 10:07:40 -05:00
SPIRV-Cookbook.rst Add the HLSL-spirv cookbook. (#1618) 2018-10-22 14:22:44 -04:00
SourceLevelDebugging.rst Debug name part implementation (#264) 2017-05-09 18:32:48 -07:00
SourceLevelDebuggingHLSL.rst Debug name part implementation (#264) 2017-05-09 18:32:48 -07:00
SystemLibrary.rst first commit 2016-12-28 11:52:27 -08:00
Vectorizers.rst first commit 2016-12-28 11:52:27 -08:00
WritingAnLLVMBackend.rst first commit 2016-12-28 11:52:27 -08:00
WritingAnLLVMPass.rst first commit 2016-12-28 11:52:27 -08:00
YamlIO.rst first commit 2016-12-28 11:52:27 -08:00
conf.py first commit 2016-12-28 11:52:27 -08:00
index.rst Debug name part implementation (#264) 2017-05-09 18:32:48 -07:00
make.bat first commit 2016-12-28 11:52:27 -08:00

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 <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