llvm-project

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[Clang] Only define wchar_size module flag if non-standard (#184668 )

Summary:
This PR simply changes the behavior of the `wchar_size` flag. Currently,
we emit this in all cases for all targets. This causes problems during
LLVM-IR linking, specifically because this would vary between Linux and
Windows in unintuitive ways. Now we have an llvm::Triple helper to
determine the size from the known values. The module flag will only be
emitted if these do not match (indicating a non-standard environment).

In addition to fixing AMDGCN bitcode linking, this also means we don't
need to bloat *every* IR module compiled by clang with this flag. The
changed tests reflects this, one less unnecessary piece of metadata.

2026-03-04 16:13:48 -06:00

models

[MIR2Vec] Handle Operands (#163281 )

2025-10-22 10:58:38 -07:00

AliasAnalysis.cpp

[LLVM] Refine MemoryEffect handling for target-specific intrinsics (#155590 )

2026-02-25 13:53:44 +00:00

AliasAnalysisEvaluator.cpp

…

AliasSetTracker.cpp

[DebugInfo][RemoveDIs] Remove a swathe of debug-intrinsic code (#144389 )

2025-06-17 15:55:14 +01:00

Analysis.cpp

Analysis: Add RuntimeLibcall analysis pass (#165196 )

2025-11-05 14:48:50 -08:00

AssumeBundleQueries.cpp

[Loads] Support dereferenceable assumption with variable size. (#128436 )

2025-07-14 08:17:33 +01:00

AssumptionCache.cpp

Remove unused <utility> inclusion

2025-11-11 13:33:33 +01:00

BasicAliasAnalysis.cpp

[NFC] Fix use-after-free: track TargetLibraryAnalysis in BasicAAResult invalidation (#183852 )

2026-02-27 15:19:14 -08:00

BlockFrequencyInfo.cpp

…

BlockFrequencyInfoImpl.cpp

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BranchProbabilityInfo.cpp

[RFC][IR] Remove Constant::isZeroValue (#181521 )

2026-02-15 12:06:42 -05:00

CallGraph.cpp

[NFC][LLVM] Adopt ListSeparator/interleaved in more places (#172909 )

2026-01-12 12:18:01 -08:00

CallGraphSCCPass.cpp

[LLVM][CodeGen] Remove pass initialization calls from pass constructors (#173061 )

2026-01-21 08:44:51 -08:00

CallPrinter.cpp

[llvm] Remove unused includes of SmallSet.h (NFC) (#154893 )

2025-08-22 10:33:46 -07:00

CaptureTracking.cpp

[IR] Introduce !captures metadata (#160913 )

2025-10-01 08:58:47 +02:00

CFG.cpp

[llvm] Ensure newline at the end of files (NFC) (#143061 )

2025-06-05 22:58:15 -07:00

CFGPrinter.cpp

[CFGPrinter] Add node id formater (#164623 )

2025-12-02 05:48:18 -08:00

CFGSCCPrinter.cpp

[NFC][LLVM] Adopt ListSeparator/interleaved in more places (#172909 )

2026-01-12 12:18:01 -08:00

CGSCCPassManager.cpp

[llvm] annotate interfaces in llvm/Analysis for DLL export (#136623 )

2025-05-27 15:14:20 -07:00

CMakeLists.txt

[CMake][LLVM] Disable PCH on Clang for file with custom flags too (#183813 )

2026-02-28 10:44:40 +00:00

CmpInstAnalysis.cpp

[llvm] Turn misc copy-assign to move-assign (#184143 )

2026-03-03 06:47:28 +00:00

CodeMetrics.cpp

…

ConstantFolding.cpp

Revert "Avoid maxnum(sNaN, x) optimizations / folds (#170181 )" (#184125 )

2026-03-03 12:45:26 +00:00

ConstraintSystem.cpp

[LLVM] Clean up code using [not_]equal_to (NFC) (#175824 )

2026-01-13 21:19:39 +00:00

CostModel.cpp

[TTI] Remove TargetLibraryInfo from IntrinsicCostAttributes (NFC) (#183764 )

2026-03-01 10:16:16 +00:00

CtxProfAnalysis.cpp

Cleanup the LLVM exported symbols namespace (#161240 )

2025-10-01 15:32:07 -07:00

CycleAnalysis.cpp

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DDG.cpp

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DDGPrinter.cpp

[DDG][NFC] Colorize DDG dot graph (#181618 )

2026-02-18 09:34:49 +05:30

Delinearization.cpp

[Delinearization] Enable delinearize-use-fixed-size-array-heuristic (#175770 )

2026-01-14 09:40:29 +00:00

DemandedBits.cpp

[DemandedBits] Support non-constant shift amounts (#148880 )

2025-08-19 01:11:16 +08:00

DependenceAnalysis.cpp

[DA] Remove consistent flag from Dependence class (#181608 )

2026-03-04 07:51:15 +00:00

DependenceGraphBuilder.cpp

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DevelopmentModeInlineAdvisor.cpp

[MLGO] Delete InlineSizeEstimatorAnalysis (#167271 )

2025-11-10 09:07:06 -08:00

DomConditionCache.cpp

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DominanceFrontier.cpp

[DominanceFrontier] Support post-dominators on graphs with single root (#179336 )

2026-02-11 20:49:41 +00:00

DomPrinter.cpp

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DomTreeUpdater.cpp

[llvm] annotate interfaces in llvm/Analysis for DLL export (#136623 )

2025-05-27 15:14:20 -07:00

DXILMetadataAnalysis.cpp

[DirectX] Emit hlsl.wavesize function attribute as entry property metadata (#165624 )

2025-11-05 09:18:49 -08:00

DXILResource.cpp

[Analysis][DXILResource] Correct bound computation (#184198 )

2026-03-03 19:34:50 +00:00

EphemeralValuesCache.cpp

…

FloatingPointPredicateUtils.cpp

Reland [llvm] add GenericFloatingPointPredicateUtils #140254 (#141065 )

2025-05-22 17:17:02 +02:00

FunctionPropertiesAnalysis.cpp

Remove nomenclature clash in statistic pass with one of the stats (#177267 )

2026-01-22 01:21:31 +00:00

GlobalsModRef.cpp

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GuardUtils.cpp

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HashRecognize.cpp

[HashRecognize] Forbid optz when data.next has exit-block user (#165574 )

2025-10-29 21:50:12 +00:00

HeatUtils.cpp

[Analysis] Use std::clamp in getHeatColor (NFC) (#165394 )

2025-10-28 16:14:46 -07:00

ImportedFunctionsInliningStatistics.cpp

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

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

IndirectCallPromotionAnalysis.cpp

[ThinLTO][MemProf] Add option to override max ICP with larger number (#171652 )

2025-12-15 10:16:06 -08:00

InlineAdvisor.cpp

[NFC][LLVM] Adopt ListSeparator/interleaved in more places (#172909 )

2026-01-12 12:18:01 -08:00

InlineCost.cpp

[llvm] Turn misc copy-assign to move-assign (#184143 )

2026-03-03 06:47:28 +00:00

InlineOrder.cpp

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InstCount.cpp

[LLVM] Metric added - largest number of basic blocks in a single func… (#182970 )

2026-02-23 18:06:47 -08:00

InstructionPrecedenceTracking.cpp

[IPT] Remove ipt.NumInstScanned statistic (#168515 )

2025-11-20 00:14:50 +08:00

InstructionSimplify.cpp

Revert "Avoid maxnum(sNaN, x) optimizations / folds (#170181 )" (#184125 )

2026-03-03 12:45:26 +00:00

InteractiveModelRunner.cpp

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IR2Vec.cpp

[llvm-ir2vec] vocab read refactor (#177837 )

2026-01-27 13:05:03 +05:30

IRSimilarityIdentifier.cpp

[Analysis] Avoid repeated hash lookups (NFC) (#140691 )

2025-05-20 06:47:25 -07:00

IVDescriptors.cpp

[llvm] Turn misc copy-assign to move-assign (#184143 )

2026-03-03 06:47:28 +00:00

IVUsers.cpp

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KernelInfo.cpp

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LastRunTrackingAnalysis.cpp

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LazyBlockFrequencyInfo.cpp

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LazyBranchProbabilityInfo.cpp

[LLVM][CodeGen] Remove pass initialization calls from pass constructors (#173061 )

2026-01-21 08:44:51 -08:00

LazyCallGraph.cpp

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

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

LazyValueInfo.cpp

[LVI] Fix the type when inferring nonnull from a dereferenceable attribute bundle (#177562 )

2026-01-23 12:10:55 +01:00

Lint.cpp

[RFC][IR] Remove Constant::isZeroValue (#181521 )

2026-02-15 12:06:42 -05:00

Loads.cpp

[Loads] Allow replacement of null with ptr in canReplacePointersIfEqual

2026-03-04 09:44:44 +01:00

Local.cpp

[RFC][IR] Remove Constant::isZeroValue (#181521 )

2026-02-15 12:06:42 -05:00

LoopAccessAnalysis.cpp

[LAA] Always use DepCands when grouping runtime checks. (#91196 )

2026-03-02 21:30:15 +00:00

LoopAnalysisManager.cpp

[llvm] annotate interfaces in llvm/Analysis for DLL export (#136623 )

2025-05-27 15:14:20 -07:00

LoopCacheAnalysis.cpp

[LoopCacheAnalysis] Remove tryDelinearizeFixedSize (NFCI) (#177552 )

2026-02-02 08:26:51 +00:00

LoopInfo.cpp

[LoopInfo] Preserve profile information in makeLoopInvariant (#174171 )

2026-02-27 10:19:03 -08:00

LoopNestAnalysis.cpp

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LoopPass.cpp

[LLVM] Change ModulePass::skipModule to take a const reference (#146168 )

2025-06-30 07:23:04 -07:00

LoopUnrollAnalyzer.cpp

[perf] Replace copy-assign by move-assign in llvm/lib/Analysis/* (#178169 )

2026-02-02 21:26:49 +00:00

MemDerefPrinter.cpp

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MemoryBuiltins.cpp

[NFCI][IRBuilder] Add CreateAllocationSize helper (#178346 )

2026-01-28 22:46:25 -05:00

MemoryDependenceAnalysis.cpp

[GVN/MemDep] Limit the size of the cache for non-local dependencies. (#150539 )

2025-09-23 14:54:29 -07:00

MemoryLocation.cpp

[MemoryLocation] Support strided matrix loads / stores (#163368 )

2025-10-22 20:41:39 +01:00

MemoryProfileInfo.cpp

[MemProf] Emit richer optimization remarks for single-type allocations (#181089 )

2026-02-12 12:55:54 -08:00

MemorySSA.cpp

[MemorySSA] Make getBlockDefs and getBlockAccesses return a non-const list (NFC)

2026-02-27 11:36:24 +01:00

MemorySSAUpdater.cpp

[MemorySSA] Make getBlockDefs and getBlockAccesses return a non-const list (NFC)

2026-02-27 11:36:24 +01:00

MLInlineAdvisor.cpp

[mlgo][inliner] Handle recursive cases when skipping non-cold functions (#164099 )

2025-10-20 07:28:50 -07:00

ModelUnderTrainingRunner.cpp

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ModuleDebugInfoPrinter.cpp

[DebugInfo] Add macro tracking support to DebugInfoFinder (#179931 )

2026-02-06 15:33:04 +00:00

ModuleSummaryAnalysis.cpp

[ThinLTO] Reduce the number of renaming due to promotions (#183793 )

2026-02-28 12:44:25 -08:00

MustExecute.cpp

[RFC][IR] Remove Constant::isZeroValue (#181521 )

2026-02-15 12:06:42 -05:00

NoInferenceModelRunner.cpp

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ObjCARCAliasAnalysis.cpp

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ObjCARCAnalysisUtils.cpp

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ObjCARCInstKind.cpp

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OptimizationRemarkEmitter.cpp

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OverflowInstAnalysis.cpp

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PHITransAddr.cpp

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PhiValues.cpp

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PostDominators.cpp

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ProfileSummaryInfo.cpp

Cleanup the LLVM exported symbols namespace (#161240 )

2025-10-01 15:32:07 -07:00

PtrUseVisitor.cpp

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RegionInfo.cpp

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RegionPass.cpp

[LLVM] Change ModulePass::skipModule to take a const reference (#146168 )

2025-06-30 07:23:04 -07:00

RegionPrinter.cpp

Fix a build error

2025-11-06 07:57:05 -08:00

ReplayInlineAdvisor.cpp

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RuntimeLibcallInfo.cpp

CodeGen: Add LibcallLoweringInfo analysis pass (#168622 )

2025-12-03 22:00:12 +01:00

ScalarEvolution.cpp

[SCEV] Always return true for isKnownToBeAPowerOfTwo for SCEVVScale (#183693 )

2026-02-27 10:41:54 +00:00

ScalarEvolutionAliasAnalysis.cpp

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ScalarEvolutionDivision.cpp

[SCEVDivision] Prevent propagating nowrap flags when numerator is an addrec (#154745 )

2026-02-16 09:14:57 +00:00

ScalarEvolutionNormalization.cpp

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ScopedNoAliasAA.cpp

[VPlan] Fix alias logic in canHoistOrSinkWithNoAliasCheck (#179504 )

2026-02-24 16:14:44 +00:00

StackLifetime.cpp

[ADT] BitVector: give subsetOf(RHS) name to !test(RHS) (NFC) (#170875 )

2025-12-09 21:00:27 +03:00

StackSafetyAnalysis.cpp

Remove unused standard headers: memory, unordered_* (#167297 )

2025-11-12 17:21:06 +00:00

StaticDataProfileInfo.cpp

[StaticDataLayout] Reconcile string literal hotness from data access profiles and PGO profiles. (#178336 )

2026-02-06 09:49:14 -08:00

StructuralHash.cpp

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SyntheticCountsUtils.cpp

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TargetLibraryInfo.cpp

[Clang] Only define wchar_size module flag if non-standard (#184668 )

2026-03-04 16:13:48 -06:00

TargetTransformInfo.cpp

[LV] Remove DataAndControlFlowWithoutRuntimeCheck. NFC (#183762 )

2026-03-02 21:14:04 +08:00

TensorSpec.cpp

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TFLiteUtils.cpp

Remove unused standard headers: <string>, <optional>, <numeric>, <tuple> (#167232 )

2025-11-10 12:17:12 +00:00

Trace.cpp

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TrainingLogger.cpp

Remove unused standard headers: <string>, <optional>, <numeric>, <tuple> (#167232 )

2025-11-10 12:17:12 +00:00

TypeBasedAliasAnalysis.cpp

[AA] Refine ModRefInfo taking into account errnomem location

2025-09-16 17:59:31 +02:00

TypeMetadataUtils.cpp

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UniformityAnalysis.cpp

[NFC][TTI] Introduce getInstructionUniformity API for uniformity analysis (#168903 )

2025-12-10 23:14:34 +05:30

ValueLattice.cpp

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ValueLatticeUtils.cpp

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ValueTracking.cpp

ValueTracking: Handle constant structs in computeKnownFPClass (#184192 )

2026-03-04 20:12:28 +01:00

VectorUtils.cpp

Reland "[LoopVectorize] Support vectorization of overflow intrinsics" (#180526 )

2026-02-09 15:32:04 +00:00