llvm-project

History

[Windows][Support] Add helper to expand short 8.3 form paths (#178480 )

Windows supports short 8.3 form filenames (for example,
`compile_commands.json` -> `COMPIL~1.JSO`) for legacy reasons. See:
https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file#short-vs-long-names

Such paths are not unusual because, on Windows, the system temporary
directory is commonly derived from the `TMP`/`TEMP` environment
variables. For historical compatibility reasons, these variables are
often set to short 8.3 form paths on systems where user names exceed
eight characters.

Introduce `windows::makeLongFormPath()` to convert paths to their long
form by expanding any 8.3 components via `GetLongPathNameW`.

As part of this change:
- Extended-length path prefix handling is centralized by adding
`stripExtendedPrefix()` and reusing it in `realPathFromHandle()`.
- `widenPath()` is cleaned up to use shared prefix constants.

This was split out from #178303 at the request of the codeowner so that
the Windows support parts can be reviewed separately.

2026-02-10 16:44:02 +00:00

BLAKE3

[Support] Simplify macro conditions involving __GNUC__ (NFC) (#155070 )

2025-08-23 07:10:02 -07:00

LSP

[SupportLSP] Add DidSaveTextDocumentParams (#172637 )

2026-01-20 15:37:39 +01:00

rpmalloc

[Support] On Windows, fix rpmalloc TLS destructor when running inside a DLL (#171465 )

2025-12-17 12:36:35 -05:00

Unix

[Support] Avoid misguided FreeBSD hack (#177508 )

2026-01-23 18:48:20 +00:00

Windows

[Windows][Support] Add helper to expand short 8.3 form paths (#178480 )

2026-02-10 16:44:02 +00:00

AArch64AttributeParser.cpp

[lld][AArch64][Build Attributes] Add support for AArch64 Build Attributes (#147970 )

2025-07-24 10:38:36 +01:00

AArch64BuildAttributes.cpp

[ADT] Prepare to deprecate variadic StringSwitch::Cases. NFC. (#166020 )

2025-11-02 00:12:33 +00:00

ABIBreak.cpp

…

Allocator.cpp

…

AllocToken.cpp

[Support] Add getAllocTokenModeAsString() helper (#169650 )

2025-11-26 14:58:38 +01:00

AMDGPUMetadata.cpp

…

APFixedPoint.cpp

[NFC][ADT/Support] Add {} for else when if body has {} (#140758 )

2025-05-21 13:19:09 -07:00

APFloat.cpp

[RFC][SPIR-V] Add intrinsics to convert to/from ap.float (#164252 )

2026-01-14 16:53:53 +01:00

APInt.cpp

[KnownBits] Make clmul optimal (#177916 )

2026-01-26 13:51:25 +00:00

APSInt.cpp

…

ARMAttributeParser.cpp

…

ARMBuildAttributes.cpp

[Build Attributes] Standardize names according to convention. (#124556 )

2025-01-28 09:53:45 +00:00

ARMWinEH.cpp

[Support] Use list-initialization for returning pairs (#160645 )

2025-09-25 08:51:55 -07:00

Atomic.cpp

…

AutoConvert.cpp

use Twine instead of char* for function args (#165569 )

2025-10-29 11:02:28 -04:00

BalancedPartitioning.cpp

[llvm] Use llvm::size (NFC) (#168675 )

2025-11-19 07:29:57 -08:00

Base64.cpp

…

BinaryStreamError.cpp

…

BinaryStreamReader.cpp

[Support] Use list-initialization for returning pairs (#160645 )

2025-09-25 08:51:55 -07:00

BinaryStreamRef.cpp

…

BinaryStreamWriter.cpp

[Support] Use list-initialization for returning pairs (#160645 )

2025-09-25 08:51:55 -07:00

BlockFrequency.cpp

…

BranchProbability.cpp

[LoopPeel] Fix BFI when peeling last iteration without guard (#168250 )

2025-11-20 10:45:53 -05:00

BuryPointer.cpp

…

CachePruning.cpp

[Support][Windows] disk_space handle unicode paths (#170716 )

2025-12-05 05:54:31 -08:00

Caching.cpp

Modify the localCache API to require an explicit commit on CachedFile… (#136121 )

2025-04-22 09:45:15 +01:00

Chrono.cpp

[NFCI][LLVM] Remove raw_string_ostream::flush calls (#164086 )

2026-01-13 08:44:48 -08:00

circular_raw_ostream.cpp

…

CMakeLists.txt

[OptBisect][ADT] Add support for running ranges of passes and introduce IntegerInclusiveInterval ADT (#152393 )

2026-01-05 11:56:40 -08:00

CodeGenCoverage.cpp

…

COM.cpp

…

CommandLine.cpp

[NFC] Implicit container copy cleanup (#174702 )

2026-01-14 11:16:32 +01:00

Compression.cpp

[Support] Check zstd decompress result before msan unpoison (#117276 )

2024-11-25 08:59:17 +08:00

ConvertEBCDIC.cpp

…

ConvertUTF.cpp

[Support] Simplify macro conditions involving __GNUC__ (NFC) (#155070 )

2025-08-23 07:10:02 -07:00

ConvertUTFWrapper.cpp

[Clang] Add warnings when mixing different charN_t types (#138708 )

2025-05-15 18:16:05 +02:00

…

CrashRecoveryContext.cpp

[llvm] Remove unused includes (NFC) (#142733 )

2025-06-04 12:30:52 -07:00

CRC.cpp

…

CSKYAttributeParser.cpp

[readobj][Arm][AArch64] Refactor Build Attributes parsing under ELFAtributeParser and add support for AArch64 Build Attributes (#128727 )

2025-03-10 09:48:40 +00:00

CSKYAttributes.cpp

…

DAGDeltaAlgorithm.cpp

[Support] Use "using" instead of "typedef" (NFC) (#166130 )

2025-11-03 08:41:32 -08:00

DataExtractor.cpp

[Support] Add signed operations to DataExtractor (#147261 )

2025-07-08 08:47:04 +02:00

Debug.cpp

Introduce a "log level" support for DEBUG_TYPE (#150855 )

2025-07-28 18:10:36 +02:00

DebugCounter.cpp

[OptBisect][ADT] Add support for running ranges of passes and introduce IntegerInclusiveInterval ADT (#152393 )

2026-01-05 11:56:40 -08:00

DebugOptions.h

Reapply [IR] Remove options to make scalable TypeSize access a warning (#156336 )

2025-09-03 11:12:11 +02:00

DeltaAlgorithm.cpp

Remove unused <set> and <map> inclusion (#167175 )

2025-11-09 15:15:21 +00:00

DeltaTree.cpp

…

DivisionByConstantInfo.cpp

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DJB.cpp

…

DXILABI.cpp

[NFC][LLVM] Fix line endings for DXILABI.cpp (#160791 )

2025-09-26 08:57:51 -07:00

DynamicAPInt.cpp

[llvm] properly guard dump methods in Support lib classes (#139938 )

2025-05-14 13:48:45 -07:00

DynamicLibrary.cpp

[Support] Use "using" instead of "typedef" (NFC) (#166130 )

2025-11-03 08:41:32 -08:00

ELFAttributes.cpp

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ELFAttrParserCompact.cpp

[readobj][Arm][AArch64] Refactor Build Attributes parsing under ELFAtributeParser and add support for AArch64 Build Attributes (#128727 )

2025-03-10 09:48:40 +00:00

ELFAttrParserExtended.cpp

[llvm] Remove unused includes (NFC) (#142733 )

2025-06-04 12:30:52 -07:00

Errno.cpp

[CMake] Remove some always-true HAVE_XXX_H

2025-01-15 09:53:21 -08:00

Error.cpp

[NFC][LLVM][Support] Namespace cleanup in Error.cpp (#175838 )

2026-01-14 09:58:14 -08:00

ErrorHandling.cpp

ErrorHandling: Check for EINTR and partial writes (#147595 )

2025-07-09 11:19:21 -07:00

ExponentialBackoff.cpp

…

ExtensibleRTTI.cpp

…

FileCollector.cpp

[llvm] Use the VFS to get the real path in FileCollector (#160943 )

2025-09-29 09:00:37 -07:00

FileOutputBuffer.cpp

[Support] Set OF_Delete for InMemoryBuffer's call to openFileForWrite under commit (#140109 )

2025-05-16 06:40:45 -07:00

FileUtilities.cpp

…

FloatingPointMode.cpp

IR: Promote "denormal-fp-math" to a first class attribute (#174293 )

2026-02-05 13:31:26 +00:00

FoldingSet.cpp

[NFC][Support] Add llvm::uninitialized_copy (#138174 )

2025-05-07 17:37:38 -07:00

FormattedStream.cpp

[FormattedStream] Add ASCII fast path (#117892 )

2024-12-02 14:31:24 +01:00

FormatVariadic.cpp

[formatv] Leave format parameters unstripped (#112625 )

2024-10-16 15:53:52 -07:00

GlobPattern.cpp

[NFC][GlobPattern] Add GlobPattern::longest_substr() (#164512 )

2025-10-23 03:46:40 +00:00

GraphWriter.cpp

[llvm] Use llvm::replace (NFC) (#137481 )

2025-04-26 18:18:09 -07:00

Hash.cpp

[CodeGen][KCFI] Allow setting type hash from xxHash64 to FNV-1a (#167254 )

2025-12-03 15:09:04 -08:00

HexagonAttributeParser.cpp

[readobj][Arm][AArch64] Refactor Build Attributes parsing under ELFAtributeParser and add support for AArch64 Build Attributes (#128727 )

2025-03-10 09:48:40 +00:00

HexagonAttributes.cpp

…

InitLLVM.cpp

[AIX] Raise soft memory limits to hard limits (#167928 )

2025-11-17 13:46:37 -05:00

InstructionCost.cpp

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IntegerInclusiveInterval.cpp

[OptBisect][ADT] Add support for running ranges of passes and introduce IntegerInclusiveInterval ADT (#152393 )

2026-01-05 11:56:40 -08:00

IntEqClasses.cpp

…

IntervalMap.cpp

…

Jobserver.cpp

[llvm/Support] Remove unnecessary includes from Jobserver.cpp, NFC (#176473 )

2026-01-16 15:33:54 -08:00

JSON.cpp

[Support][NFC] Move JSON::dump out-of-line (#175558 )

2026-01-12 15:42:23 +00:00

KnownBits.cpp

[perf] Replace copy-assign by move-assign in llvm/lib/Support/* (#178167 )

2026-01-27 13:20:56 +00:00

KnownFPClass.cpp

ValueTracking: Move powi logic to KnownFPClass (#179301 )

2026-02-02 19:18:49 +00:00

LEB128.cpp

…

LineIterator.cpp

…

Locale.cpp

…

LockFileManager.cpp

[llvm][clang] Sandbox filesystem reads (#165350 )

2025-12-11 15:42:13 -08:00

ManagedStatic.cpp

…

MathExtras.cpp

[NFC][ADT] add NumDigitsBase10 to MathExtra and update some current users (#165479 )

2026-02-07 18:10:05 +01:00

MD5.cpp

Remove unused <array> and <list> inclusion (#167116 )

2025-11-09 15:15:10 +00:00

MemAlloc.cpp

[Support] Report OOM from allocate_buffer (#85449 )

2025-01-27 09:04:43 -08:00

Memory.cpp

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MemoryBuffer.cpp

[LLD][COFF] Prefetch inputs early-on to improve link times (#169224 )

2026-01-09 15:49:35 +00:00

MemoryBufferRef.cpp

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ModRef.cpp

Extend MemoryEffects to Support Target-Specific Memory Locations (#148650 )

2025-11-18 11:10:58 +00:00

MSP430AttributeParser.cpp

[Support] Remove unused includes (NFC) (#116752 )

2024-11-20 06:51:43 -08:00

MSP430Attributes.cpp

…

Mustache.cpp

[perf] Replace copy-assign by move-assign in llvm/lib/Support/* (#178167 )

2026-01-27 13:20:56 +00:00

NativeFormatting.cpp

[Support] Remove unused includes (NFC) (#116752 )

2024-11-20 06:51:43 -08:00

OptimizedStructLayout.cpp

[Support] Use list-initialization for returning pairs (#160447 )

2025-09-24 08:44:56 -07:00

Optional.cpp

…

OptionStrCmp.cpp

…

Parallel.cpp

[Support] Join threads when stopping ThreadPoolExecutor (#166054 )

2026-01-19 14:43:35 +00:00

Path.cpp

[perf] Replace copy-assign by move-assign in llvm/lib/Support/* (#178167 )

2026-01-27 13:20:56 +00:00

PGOOptions.cpp

[llvm] Add vfs::FileSystem to PassBuilder (#160188 )

2025-09-25 10:15:47 -07:00

PluginLoader.cpp

…

PrettyStackTrace.cpp

[llvm] Replace LLVM_ATTRIBUTE_UNUSED with [[maybe_unused]] (NFC) (#163507 )

2025-10-15 06:54:14 -07:00

Process.cpp

[Support] Remove unused includes (NFC) (#116752 )

2024-11-20 06:51:43 -08:00

Program.cpp

[Support] Construct SmallVector with ArrayRef (NFC) (#137586 )

2025-04-28 22:25:17 -07:00

ProgramStack.cpp

Reland: [llvm][clang] Allocate a new stack instead of spawning a new thread to get more stack space (#136046 )

2025-04-30 19:14:15 -07:00

RandomNumberGenerator.cpp

…

raw_os_ostream.cpp

…

raw_ostream_proxy.cpp

Support: Add proxies for raw_ostream and raw_pwrite_stream (#113362 )

2025-08-26 16:19:52 -07:00

raw_ostream.cpp

[llvm][clang] Sandbox filesystem reads (#165350 )

2025-12-11 15:42:13 -08:00

raw_socket_stream.cpp

[ADT, Support] Use "= default" (NFC) (#166007 )

2025-11-01 12:41:43 -07:00

regcomp.c

[regex][FileCheck] Support back-references up to 20. (#174150 )

2026-01-18 21:18:39 +01:00

regengine.inc

…

regerror.c

…

regex2.h

…

regex_impl.h

…

Regex.cpp

[regex][FileCheck] Support back-references up to 20. (#174150 )

2026-01-18 21:18:39 +01:00

regexec.c

…

regfree.c

…

regstrlcpy.c

…

regutils.h

…

RewriteBuffer.cpp

…

RewriteRope.cpp

…

RISCVAttributeParser.cpp

[readobj][Arm][AArch64] Refactor Build Attributes parsing under ELFAtributeParser and add support for AArch64 Build Attributes (#128727 )

2025-03-10 09:48:40 +00:00

RISCVAttributes.cpp

…

RISCVISAUtils.cpp

…

RWMutex.cpp

[llvm] Add back Allocator.h include to RWMutex.cpp.

2024-11-20 15:00:11 +00:00

ScaledNumber.cpp

[Support] Use list-initialization for returning pairs (#160447 )

2025-09-24 08:44:56 -07:00

ScopedPrinter.cpp

[NFC][LLVM][Support] Misc code cleanup in ScopedPrinter (#161462 )

2025-10-01 13:58:26 -07:00

SHA1.cpp

…

SHA256.cpp

…

Signals.cpp

[llvm][clang] Sandbox filesystem reads (#165350 )

2025-12-11 15:42:13 -08:00

Signposts.cpp

…

SipHash.cpp

[Support] Add SipHash-based 64-bit stable hash function (#160945 )

2025-09-29 15:56:54 +02:00

SlowDynamicAPInt.cpp

[llvm] properly guard dump methods in Support lib classes (#139938 )

2025-05-14 13:48:45 -07:00

SmallPtrSet.cpp

[Support] Use list-initialization for returning pairs (#160447 )

2025-09-24 08:44:56 -07:00

SmallVector.cpp

…

SourceMgr.cpp

[support] Don't require VFS in SourceMgr for loading includes (#163862 )

2025-10-17 08:12:34 -07:00

SpecialCaseList.cpp

[Support] Use StringMap::contains (NFC) (#168673 )

2025-11-19 08:48:41 -08:00

Statistic.cpp

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StringExtras.cpp

Retire StrInStrNoCase. NFC.

2026-01-02 18:48:17 +01:00

StringMap.cpp

[ADT] Use "if constexpr" with shouldReverseIterate (#161477 )

2025-10-01 08:59:23 -07:00

StringRef.cpp

[Support] Remove a redundant declaration (NFC) (#166085 )

2025-11-02 13:15:01 -08:00

StringSaver.cpp

…

SuffixTree.cpp

[llvm] Use llvm::SmallVector::pop_back_val (NFC) (#136533 )

2025-04-21 08:13:16 -07:00

SuffixTreeNode.cpp

[Support] Remove unused includes (NFC) (#116752 )

2024-11-20 06:51:43 -08:00

SystemUtils.cpp

…

TarWriter.cpp

…

TextEncoding.cpp

Fix typos and spelling errors across codebase (#156270 )

2026-01-13 11:52:46 -05:00

Threading.cpp

[Support] Avoid misguided FreeBSD hack (#177508 )

2026-01-23 18:48:20 +00:00

ThreadPool.cpp

[llvm] Fix comment references deprecated make_scope_exit (#175820 )

2026-01-13 20:26:50 +00:00

TimeProfiler.cpp

[llvm] Remove redundant calls to std::unique_ptr<T>::get (NFC) (#113415 )

2024-10-23 10:44:09 -07:00

Timer.cpp

[Support] Use "using" instead of "typedef" (NFC) (#166130 )

2025-11-03 08:41:32 -08:00

ToolOutputFile.cpp

…

TrieRawHashMap.cpp

[Support] Use std::optional::value_or (NFC) (#140436 )

2025-05-18 07:34:20 -07:00

Twine.cpp

[ADT] Store integers by value in Twine (NFC) (#158409 )

2025-09-13 07:50:37 -07:00

Unicode.cpp

…

UnicodeCaseFold.cpp

…

UnicodeNameToCodepoint.cpp

[Support][NFC] Make unicode tables constant (#175573 )

2026-01-12 17:04:24 +00:00

UnicodeNameToCodepointGenerated.cpp

[Support][NFC] Make unicode tables constant (#175573 )

2026-01-12 17:04:24 +00:00

Valgrind.cpp

…

VersionTuple.cpp

[Support] Avoid setting minor/subminor/build in VersionTuple::withMajorReplaced (#139318 )

2025-05-09 16:56:18 -07:00

VirtualFileSystem.cpp

[perf] Replace extra copy-assign by move-assign in llvm/lib/ (#179465 )

2026-02-04 06:36:30 +00:00

VirtualOutputBackend.cpp

Support: Add vfs::OutputBackend and OutputFile to virtualize compiler outputs (#113363 )

2025-09-05 10:31:02 -07:00

VirtualOutputBackends.cpp

[LLVM][ADT] Migrate users of make_scope_exit to CTAD (#174030 )

2026-01-02 20:42:56 -08:00

VirtualOutputConfig.cpp

Support: Add vfs::OutputBackend and OutputFile to virtualize compiler outputs (#113363 )

2025-09-05 10:31:02 -07:00

VirtualOutputError.cpp

Support: Add vfs::OutputBackend and OutputFile to virtualize compiler outputs (#113363 )

2025-09-05 10:31:02 -07:00

VirtualOutputFile.cpp

Support: Add vfs::OutputBackend and OutputFile to virtualize compiler outputs (#113363 )

2025-09-05 10:31:02 -07:00

Watchdog.cpp

…

WithColor.cpp

…

xxhash.cpp

…

YAMLParser.cpp

[Support] Use list-initialization for returning pairs (#160645 )

2025-09-25 08:51:55 -07:00

YAMLTraits.cpp

[Remarks] YAMLRemarkSerializer: StringRef-ize apis to avoid out-of-bounds read footguns (#160397 )

2025-09-24 07:41:06 -07:00

Z3Solver.cpp

[LLVM][ADT] Migrate users of make_scope_exit to CTAD (#174030 )

2026-01-02 20:42:56 -08:00

zOSLibFunctions.cpp

Implement a more seamless way to provide missing functions on z/OS (#167703 )

2025-11-18 15:58:39 -05:00