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Craig Topper 9a724aa38f [Driver][CodeGen] Add -mprefer-vector-width driver option and attribute during CodeGen. 
This adds a new command line option -mprefer-vector-width to specify a preferred vector width for the vectorizers. Valid values are 'none' and unsigned integers. The driver will check that it meets those constraints. Specific supported integers will be managed by the targets in the backend.

Clang will take the value and add it as a new function attribute during CodeGen.

This represents the alternate direction proposed by Sanjay in this RFC: http://lists.llvm.org/pipermail/llvm-dev/2017-November/118734.html

The syntax here matches gcc, though gcc treats it as an x86 specific command line argument. gcc only allows values of 128, 256, and 512. I'm not having clang check any values.

Differential Revision: https://reviews.llvm.org/D40230

llvm-svn: 320419
 		2017-12-11 21:09:19 +00:00
..
CommandGuide Driver: Remove support for -fobjc-gc* 2016-12-07 00:31:10 +00:00
analyzer [analyzer] Document the issue hash debugging facility 2017-11-13 11:13:02 +00:00
tools [clang-format] Sort using declarations by splitting on '::' 2017-11-09 15:41:23 +00:00
AddressSanitizer.rst [docs] Update LeakSanitizer documentation to reflect OS X support 2017-09-13 19:40:10 +00:00
AttributeReference.rst Adding a title to appease the sphinx build bot. 2015-06-23 17:31:30 +00:00
AutomaticReferenceCounting.rst docs: update docs for objc_storeStrong behaviour 2017-02-11 17:24:09 +00:00
Block-ABI-Apple.rst Typo fix: appropo -> apropos. NFC. 2017-06-19 20:08:20 +00:00
Block-ABI-Apple.txt
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BlockLanguageSpec.rst
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CMakeLists.txt docs: Fix Sphinx detection with out-of-tree builds 2017-05-09 01:42:33 +00:00
ClangCheck.rst [clang docs] Minor fix in ClangCheck.rst 2016-11-14 17:31:24 +00:00
ClangCommandLineReference.rst [Driver][CodeGen] Add -mprefer-vector-width driver option and attribute during CodeGen. 2017-12-11 21:09:19 +00:00
ClangFormat.rst [Docs] Update list of languages clang-format can format 2017-11-22 10:47:35 +00:00
ClangFormatStyleOptions.rst [clang-format] Add option to group multiple #include blocks when sorting includes 2017-11-27 13:23:45 +00:00
ClangPlugins.rst Removing more :option: tags that we do not have corresponding .. option directives for; these are causing the sphinx bot to fail (http://lab.llvm.org:8011/builders/clang-sphinx-docs/builds/15195/steps/docs-clang-html/logs/stdio). 2016-07-14 14:07:37 +00:00
ClangTools.rst Fixed a link. 2015-11-04 19:42:17 +00:00
ControlFlowIntegrity.rst [CFI] Add CFI-icall pointer type generalization 2017-10-31 22:39:44 +00:00
ControlFlowIntegrityDesign.rst Fix broken links to the Itanium CXX ABI 2017-09-12 00:21:17 +00:00
CrossCompilation.rst [docs] Use x86_64 and i386 instead of x86 as arch for triples. 2016-12-05 22:52:20 +00:00
DataFlowSanitizer.rst
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DataFlowSanitizerDesign.rst
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DiagnosticsReference.rst [www] Regenerate diagnostics reference. 2017-10-26 21:06:52 +00:00
DriverArchitecture.png
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DriverInternals.rst Driver: Replace a couple of out of date terms in the docs 2015-07-03 08:03:43 +00:00
ExternalClangExamples.rst Add LibreOffice Clang plugin to ExternalClangExamples.rst 2017-03-22 08:45:49 +00:00
FAQ.rst
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HardwareAssistedAddressSanitizerDesign.rst [hwasan] typo in docs 2017-12-08 18:14:03 +00:00
HowToSetupToolingForLLVM.rst Fixed a typo (compilation_commands.json --> compile_commands.json). 2016-08-19 13:36:31 +00:00
InternalsManual.rst Fix typos in documentation 2017-10-09 23:45:20 +00:00
IntroductionToTheClangAST.rst
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ItaniumMangleAbiTags.rst NFC fix documentation build by rL263015 2016-03-09 19:39:16 +00:00
JSONCompilationDatabase.rst [Tooling] Use FixedCompilationDatabase when `compile_flags.txt` is found. 2017-11-09 10:37:39 +00:00
LTOVisibility.rst docs: Use the term "whole-program devirtualization" instead of "virtual function call optimization". 2017-04-10 23:54:28 +00:00
LanguageExtensions.rst Add support for the __has_c_attribute builtin preprocessor macro. 2017-12-07 21:37:49 +00:00
LeakSanitizer.rst [docs] Update LeakSanitizer documentation to reflect OS X support 2017-09-13 19:40:10 +00:00
LibASTMatchers.rst Typo fix in AST matcher documentation: s/aribtrary/arbitrary/ 2016-12-31 01:04:02 +00:00
LibASTMatchersReference.html Add the hasDefinition() AST matcher to match class declarations that also have a definition. 2017-11-29 21:21:51 +00:00
LibASTMatchersTutorial.rst [clang] Minor fix to libASTMatcherTutorial 2016-12-30 20:49:44 +00:00
LibFormat.rst clang-format - Also reference the list of style option of clang-format in Libformat 2017-06-26 03:19:05 +00:00
LibTooling.rst
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MSVCCompatibility.rst Update MSVC compat docs about debug info 2016-12-14 21:34:19 +00:00
Makefile.sphinx docs: Clarify that cfi-unrelated-cast is based on lifetime. 2016-02-01 18:55:50 +00:00
MemorySanitizer.rst Fix a typo 2017-06-26 02:45:08 +00:00
Modules.rst Fix reStructuredText warning. 2017-09-14 23:58:18 +00:00
ObjectiveCLiterals.rst Fix typo. NFC. 2015-06-27 19:04:55 +00:00
PCHInternals.rst Removing a few more :option: tags that we do not have corresponding .. option directives for; these are causing the sphinx bot to fail (http://lab.llvm.org:8011/builders/clang-sphinx-docs/builds/15197/steps/docs-clang-html/logs/stdio). 2016-07-14 15:32:11 +00:00
PCHLayout.graffle
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PCHLayout.png
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PTHInternals.rst
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RAVFrontendAction.rst docs: Remove references to the long-defunct LLVM_USED_LIBS 2015-11-26 19:52:24 +00:00
README.txt
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RefactoringEngine.rst Fix small nits in clang-refactor doc. 2017-10-10 09:00:56 +00:00
ReleaseNotes.rst Switch to gnu++14 as the default dialect. 2017-12-09 12:09:54 +00:00
SafeStack.rst docs: Document how safestack handles setjmp and exceptions. 2016-05-24 23:38:02 +00:00
SanitizerCoverage.rst docs: don't say that data flow tracing interface is unstable 2017-08-31 11:02:44 +00:00
SanitizerSpecialCaseList.rst Allow specifying sanitizers in blacklists 2017-09-25 22:11:12 +00:00
SanitizerStats.rst Introduce -fsanitize-stats flag. 2016-01-16 00:31:22 +00:00
SourceBasedCodeCoverage.rst [docs] Coverage: Improve the wording a bit 2017-06-19 21:26:04 +00:00
ThinLTO.rst CachePruning: Allow limiting the number of files in the cache directory. 2017-11-22 18:27:31 +00:00
ThreadSafetyAnalysis.rst Correct the attribute spelling for guarded_var and pt_guarded_var. 2017-05-08 12:39:17 +00:00
ThreadSanitizer.rst [docs] Update the TSan and MSan docs to refer to the new no_sanitize attribute 2016-10-27 21:38:44 +00:00
Toolchain.rst Fix broken links to the Itanium CXX ABI 2017-09-12 00:21:17 +00:00
Tooling.rst
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UndefinedBehaviorSanitizer.rst [ubsan] Enable -fsanitize=function on Darwin 2017-09-13 00:04:36 +00:00
UsersManual.rst [CFI] Add CFI-icall pointer type generalization 2017-10-31 22:39:44 +00:00
conf.py Bump docs version to 6.0 2017-07-19 13:50:27 +00:00
doxygen-mainpage.dox [docs] Add missing file 2016-03-03 10:44:10 +00:00
doxygen.cfg.in PR19260: Teach doxygen to spell correctly the include paths. 2017-04-20 08:57:41 +00:00
index.rst design document for a hardware-assisted memory safety (HWAMS) tool, similar to AddressSanitizer 2017-12-04 20:01:38 +00:00
make.bat
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README.txt 

See llvm/docs/README.txt