llvm/lib/Support at c85eac3a24ea1aa55ccbc3003470375514b068cb - llvm

RPCS3/llvm

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James Henderson 6277ca3b6d [CommandLine] Don't print empty sentinel values from EnumValN lists in help text

In order to make an option value truly optional, both the ValueOptional
attribute and an empty-named value are required. Prior to this change,
this empty-named value appears in the command-line help text:

-some-option - some help text
  =v1        - description 1
  =v2        - description 2
  =          -

This change improves the help text for these sort of options in a number
of ways:

1) ValueOptional options with an empty-named value now print their help
   text twice: both without and then with '=<value>' after the name. The
   latter version then lists the allowed values after it.
2) Empty-named values with no help text in ValueOptional options are not
   listed in the permitted values.

-some-option         - some help text
-some-option=<value> - some help text
  =v1                - description 1
  =v2                - description 2

3) Otherwise empty-named options are printed as =<empty> rather than
   simply '='.
4) Option values without help text do not have the '-' separator
   printed.

-some-option=<value> - some help text
  =v1                - description 1
  =v2
  =<empty>           - description

It also tweaks the llvm-symbolizer -functions help text to not print a
trailing ':' as that looks bad combined with 1) above.

This is mostly a reland of r353048 which in turn was a reland of
r352750.

Reviewed by: ruiu, thopre, mstorsjo

Differential Revision: https://reviews.llvm.org/D57030



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353053 91177308-0d34-0410-b5e6-96231b3b80d8

2019-02-04 16:17:57 +00:00

Unix

MemoryBlock: Do not automatically extend a given size to a multiple of page size.

2019-01-23 02:03:26 +00:00

Windows

Update the file headers across all of the LLVM projects in the monorepo

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AArch64TargetParser.cpp

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Allocator.cpp

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AMDGPUMetadata.cpp

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APFloat.cpp

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APInt.cpp

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APSInt.cpp

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ARMAttributeParser.cpp

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ARMBuildAttrs.cpp

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ARMTargetParser.cpp

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ARMWinEH.cpp

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Atomic.cpp

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BinaryStreamError.cpp

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BinaryStreamReader.cpp

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BinaryStreamRef.cpp

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BinaryStreamWriter.cpp

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BlockFrequency.cpp

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BranchProbability.cpp

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BuryPointer.cpp

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CachePruning.cpp

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Chrono.cpp

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circular_raw_ostream.cpp

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2019-01-19 08:50:56 +00:00

CMakeLists.txt

[ADT] Add streaming operators for llvm::Optional

2019-01-18 12:52:03 +00:00

CodeGenCoverage.cpp

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COM.cpp

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2019-01-19 08:50:56 +00:00

CommandLine.cpp

[CommandLine] Don't print empty sentinel values from EnumValN lists in help text

2019-02-04 16:17:57 +00:00

Compression.cpp

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ConvertUTF.cpp

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ConvertUTFWrapper.cpp

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2019-01-19 08:50:56 +00:00

Add regular expression matching support, based on OpenBSD regexec()/regcomp()

2009-08-30 08:24:09 +00:00

CrashRecoveryContext.cpp

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2019-01-19 08:50:56 +00:00

DAGDeltaAlgorithm.cpp

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DataExtractor.cpp

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Debug.cpp

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DebugCounter.cpp

Print out DebugCounter info with -print-debug-counter

2018-10-23 21:51:56 +00:00

DeltaAlgorithm.cpp

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DJB.cpp

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DynamicLibrary.cpp

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Errno.cpp

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Error.cpp

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ErrorHandling.cpp

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2019-01-19 08:50:56 +00:00

FileCheck.cpp

[FileCheck] Suppress old -v/-vv diags if dumping input

2019-01-22 21:41:42 +00:00

FileOutputBuffer.cpp

FileOutputBuffer: handle mmap(2) failure

2019-01-22 21:49:56 +00:00

FileUtilities.cpp

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FoldingSet.cpp

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FormattedStream.cpp

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FormatVariadic.cpp

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GlobPattern.cpp

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GraphWriter.cpp

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Hashing.cpp

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Host.cpp

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2019-01-19 08:50:56 +00:00

InitLLVM.cpp

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IntEqClasses.cpp

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2019-01-19 08:50:56 +00:00

IntervalMap.cpp

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2019-01-19 08:50:56 +00:00

ItaniumManglingCanonicalizer.cpp

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2019-01-19 10:56:40 +00:00

JamCRC.cpp

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2019-01-19 08:50:56 +00:00

JSON.cpp

[JSON] Work around excess-precision issue when comparing T_Integer numbers.

2019-01-25 15:05:33 +00:00

KnownBits.cpp

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2019-01-19 08:50:56 +00:00

LEB128.cpp

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2019-01-19 08:50:56 +00:00

LineIterator.cpp

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LLVMBuild.txt

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2019-01-19 08:50:56 +00:00

Locale.cpp

[Windows] Convert from UTF-8 to UTF-16 when writing to a Windows console

2018-09-05 00:08:56 +00:00

LockFileManager.cpp

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LowLevelType.cpp

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ManagedStatic.cpp

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MathExtras.cpp

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2019-01-19 08:50:56 +00:00

MD5.cpp

Remove \brief commands from doxygen comments.

2018-05-01 15:54:18 +00:00

Memory.cpp

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MemoryBuffer.cpp

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Mutex.cpp

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NativeFormatting.cpp

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Optional.cpp

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Options.cpp

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Parallel.cpp

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Path.cpp

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PluginLoader.cpp

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PrettyStackTrace.cpp

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Process.cpp

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Program.cpp

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RandomNumberGenerator.cpp

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raw_os_ostream.cpp

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raw_ostream.cpp

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2019-01-19 08:50:56 +00:00

README.txt.system

Merge System into Support.

2010-11-29 18:16:10 +00:00

regcomp.c

Attempt to heal bots after r328970.

2018-04-02 13:49:35 +00:00

regengine.inc

[ADT] Replace std::isprint by llvm::isPrint.

2018-07-26 15:31:41 +00:00

regerror.c

More MSVC warning fixes:

2009-09-06 12:26:28 +00:00

regex2.h

Support/reg*.h: Make headers include their dependencies

2017-10-26 20:23:11 +00:00

regex_impl.h

Remove trailing space

2018-07-30 19:41:25 +00:00

Regex.cpp

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2019-01-19 08:50:56 +00:00

regexec.c

Fix integer undefined behavior due to signed left shift overflow in LLVM.

2012-08-24 23:29:28 +00:00

regfree.c

Add regular expression matching support, based on OpenBSD regexec()/regcomp()

2009-08-30 08:24:09 +00:00

regstrlcpy.c

Add regular expression matching support, based on OpenBSD regexec()/regcomp()

2009-08-30 08:24:09 +00:00

regutils.h

adding re-include guards into lib/Support/reg*.h

2014-06-12 16:07:56 +00:00

RWMutex.cpp

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ScaledNumber.cpp

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ScopedPrinter.cpp

Remove redundant includes from lib/Support.

2017-12-13 21:30:58 +00:00

SHA1.cpp

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Signals.cpp

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SmallPtrSet.cpp

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SmallVector.cpp

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SourceMgr.cpp

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SpecialCaseList.cpp

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Statistic.cpp

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StringExtras.cpp

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StringMap.cpp

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StringPool.cpp

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StringRef.cpp

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StringSaver.cpp

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SymbolRemappingReader.cpp

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SystemUtils.cpp

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TargetParser.cpp

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TargetRegistry.cpp

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TarWriter.cpp

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Threading.cpp

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ThreadLocal.cpp

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ThreadPool.cpp

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Timer.cpp

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ToolOutputFile.cpp

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TrigramIndex.cpp

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Triple.cpp

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Twine.cpp

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Unicode.cpp

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UnicodeCaseFold.cpp

Resubmit r325107 (case folding DJB hash)

2018-02-21 22:36:31 +00:00

Valgrind.cpp

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VersionTuple.cpp

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VirtualFileSystem.cpp

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Watchdog.cpp

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WithColor.cpp

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xxhash.cpp

Make ICF log output order deterministic.

2018-07-31 18:04:58 +00:00

YAMLParser.cpp

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YAMLTraits.cpp

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README.txt.system

Design Of lib/System
====================

The software in this directory is designed to completely shield LLVM from any
and all operating system specific functionality. It is not intended to be a
complete operating system wrapper (such as ACE), but only to provide the
functionality necessary to support LLVM.

The software located here, of necessity, has very specific and stringent design
rules. Violation of these rules means that cracks in the shield could form and
the primary goal of the library is defeated. By consistently using this library,
LLVM becomes more easily ported to new platforms since the only thing requiring
porting is this library.

Complete documentation for the library can be found in the file:
  llvm/docs/SystemLibrary.html
or at this URL:
  http://llvm.org/docs/SystemLibrary.html

While we recommend that you read the more detailed documentation, for the
impatient, here's a high level summary of the library's requirements.

 1. No system header files are to be exposed through the interface.
 2. Std C++ and Std C header files are okay to be exposed through the interface.
 3. No exposed system-specific functions.
 4. No exposed system-specific data.
 5. Data in lib/System classes must use only simple C++ intrinsic types.
 6. Errors are handled by returning "true" and setting an optional std::string
 7. Library must not throw any exceptions, period.
 8. Interface functions must not have throw() specifications.
 9. No duplicate function impementations are permitted within an operating
    system class.

To accomplish these requirements, the library has numerous design criteria that
must be satisfied. Here's a high level summary of the library's design criteria:

 1. No unused functionality (only what LLVM needs)
 2. High-Level Interfaces
 3. Use Opaque Classes
 4. Common Implementations
 5. Multiple Implementations
 6. Minimize Memory Allocation
 7. No Virtual Methods