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clang-p2996/llvm/test/Transforms
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Florian Hahn fbcf8a8cbb [ConstraintElim] Add (UGE, var, 0) to unsigned system for new vars. (#76262) 
The constraint system used for ConstraintElimination assumes all
varibles to be signed. This can cause missed optimization in the
unsigned system, due to missing the information that all variables are
unsigned (non-negative).

Variables can be marked as non-negative by adding Var >= 0 for all
variables. This is done for arguments on ConstraintInfo construction and
after adding new variables. This handles cases like the ones outlined in
https://discourse.llvm.org/t/why-does-llvm-not-perform-range-analysis-on-integer-values/74341

The original example shared above is now handled without this change,
but adding another variable means that instcombine won't be able to
simplify examples like https://godbolt.org/z/hTnra7zdY

Adding the extra variables comes with a slight compile-time increase
https://llvm-compile-time-tracker.com/compare.php?from=7568b36a2bc1a1e496ec29246966ffdfc3a8b87f&to=641a47f0acce7755e340447386013a2e086f03d9&stat=instructions:u

stage1-O3    stage1-ReleaseThinLTO    stage1-ReleaseLTO-g  stage1-O0-g
 +0.04%           +0.07%                   +0.05%           +0.02%
stage2-O3    stage2-O0-g    stage2-clang
  +0.05%         +0.05%        +0.05%

https://github.com/llvm/llvm-project/pull/76262
2023-12-23 15:53:48 +01:00
..
ADCE
[DebugInfo][RemoveDIs] Make dropping variable locations explicit (#72399)
2023-11-21 00:01:00 +00:00
AddDiscriminators
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AggressiveInstCombine
[AggressiveInstCombine] Ignore debug instructions when load combining (#70200)
2023-10-26 09:58:54 +02:00
AlignmentFromAssumptions
AlignmentFromAssumptions should only track pointer operand users (#73370)
2023-12-07 17:35:35 +01:00
ArgumentPromotion
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
AtomicExpand
[AMDGPU] Set MaxAtomicSizeInBitsSupported. (#75185)
2023-12-18 16:51:06 -05:00
Attributor
[Attributor] Don't construct pretty GEPs
2023-12-22 16:48:13 +01:00
BDCE
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
BlockExtractor
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BranchFolding
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CalledValuePropagation
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CallSiteSplitting
[DebugInfo][RemoveDIs] Instrument inliner for non-instr debug-info (#72884)
2023-11-26 21:24:29 +00:00
CanonicalizeAliases
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CanonicalizeFreezeInLoops
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CodeExtractor
[DebugInfo][RemoveDIs] Extract DPValues in CodeExtractor like dbg.values (#73252)
2023-11-29 16:21:14 +00:00
CodeGenPrepare
Follow up to d0858bffa1, add missing REQUIRES x86
2023-12-06 17:48:50 +00:00
ConstantHoisting
[ConstantHoisting] Add a TTI hook to prevent hoisting. (#69004)
2023-12-13 17:20:36 +00:00
ConstantMerge
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ConstraintElimination
[ConstraintElim] Add (UGE, var, 0) to unsigned system for new vars. (#76262)
2023-12-23 15:53:48 +01:00
Coroutines
[RemoveDIs] Update Coroutine passes to handle DPValues (#74480)
2023-12-13 12:34:37 +00:00
CorrelatedValuePropagation
[CVP] Fix #76058: missing debug location in processSDiv function (#76118)
2023-12-22 09:26:32 +01:00
CrossDSOCFI
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DCE
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
DeadArgElim
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DeadStoreElimination
[IR] Add dead_on_unwind attribute (#74289)
2023-12-14 09:58:14 +01:00
DFAJumpThreading
[DFAJumpThreading] Remove incoming StartBlock from all phis when unfolding select (#71082)
2023-11-04 03:32:20 +08:00
DivRemPairs
[opt] Infer DataLayout from triple if not specified
2023-10-26 12:07:37 -07:00
DXILUpgrade
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EarlyCSE
ValueTracking: Add some tests to cover asserts in fcmpImpliesClass
2023-11-13 15:05:52 +09:00
EliminateAvailableExternally
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EmbedBitcode
[clang][llvm][fatlto] Avoid cloning modules in FatLTO (#72180)
2023-11-30 17:09:34 -08:00
EntryExitInstrumenter
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ExpandLargeDivRem/X86
CodeGen: Port ExpandLargeDivRem to new pass manager (#71022)
2023-11-03 08:34:15 +09:00
ExpandLargeFpConvert/X86
CodeGen: Port ExpandLargeFpConvert to new PM (#71027)
2023-11-03 14:23:30 +09:00
ExpandMemCmp
[CodeGen] Port ExpandMemCmp to new pass manager (#74050)
2023-12-13 16:18:24 +08:00
FixIrreducible
[LowerSwitch] Don't let pass manager handle the dependency (#68662)
2023-10-25 09:24:36 +08:00
Float2Int
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ForcedFunctionAttrs
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FunctionAttrs
[IR] Add writable attribute
2023-11-01 10:46:31 +01:00
FunctionImport
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FunctionSpecialization
[FuncSpec] Update function specialization to handle phi-chains (#72903)
2023-11-22 10:41:01 +00:00
GCOVProfiling
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GlobalDCE
[IR] Remove zext and sext constant expressions (#71040)
2023-11-03 10:46:07 +01:00
GlobalMerge
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GlobalOpt
[AMDGPU] - Add address space for strided buffers (#74471)
2023-12-15 15:49:25 +01:00
GlobalSplit
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GuardWidening
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GVN
[CaptureTracking] Treat vector GEPs as captures
2023-12-05 10:09:52 +01:00
GVNHoist
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GVNSink
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HardwareLoops
[SCEV] Extend isImpliedCondOperandsViaRanges to independent predicates (#71110)
2023-11-07 07:25:47 -08:00
HelloNew
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HipStdPar
[HIP][LLVM][Opt] Add LLVM support for hipstdpar
2023-10-12 11:26:48 +01:00
HotColdSplit
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IndirectBrExpand
[CodeGen] Port IndirectBrExpand to new pass manager (#75287)
2023-12-13 16:13:17 +08:00
IndVarSimplify
[IndVars] Avoid unnecessary truncate for zext nneg use
2023-12-22 11:30:17 +01:00
InferAddressSpaces
[InferAddressSpaces] Fix constant replace to avoid modifying other functions (#70611)
2023-11-13 13:28:56 +08:00
InferAlignment
[IR] Require index width to be ule pointer width (#70015)
2023-10-26 10:19:06 +02:00
InferFunctionAttrs
[opt] Infer DataLayout from triple if not specified
2023-10-26 12:07:37 -07:00
Inline
[DebugInfo][RemoveDIs] Instrument inliner for non-instr debug-info (#72884)
2023-11-26 21:24:29 +00:00
InstCombine
[InstCombine] Fold minmax intrinsic using KnownBits information (#76242)
2023-12-23 04:41:32 +08:00
InstNamer
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InstSimplify
[ValueTracking] Infer X u<= X +nuw Y for any Y (#75524)
2023-12-15 16:33:39 +08:00
InterleavedAccess
[CodeGen] Port InterleavedAccess to new pass manager (#74904)
2023-12-10 19:15:51 +08:00
Internalize
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IRCE
[SCEVExpander] Attempt to reinfer flags dropped due to CSE (#72431)
2023-12-07 13:20:36 -08:00
IROutliner
[IROutliner] Skip dbg values during the candidate search. (#72945)
2023-11-22 11:26:36 -08:00
JumpThreading
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
KCFI
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LCSSA
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
LICM
[IR] Add dead_on_unwind attribute (#74289)
2023-12-14 09:58:14 +01:00
LoadStoreVectorizer
[Tests] Add disjoint flag to some tests (NFC)
2023-12-05 14:09:36 +01:00
LoopBoundSplit
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LoopDataPrefetch
[RISCV] Enable LoopDataPrefetch pass (#66201)
2023-11-10 15:39:58 +08:00
LoopDeletion
[DebugInfo][RemoveDIs] Instrument loop-deletion for DPValues (#73042)
2023-11-23 12:24:15 +00:00
LoopDistribute
BlockFrequencyInfoImpl: Avoid big numbers, increase precision for small spreads
2023-10-24 20:27:39 -07:00
LoopFlatten
Revert "[IndVars] Generate zext nneg when locally obvious"
2023-11-03 11:19:14 -07:00
LoopFusion
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LoopIdiom
[Tests] Add disjoint flag to some tests (NFC)
2023-12-05 14:09:36 +01:00
LoopInstSimplify
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LoopInterchange
[Tests] Add disjoint flag to some tests (NFC)
2023-12-05 14:09:36 +01:00
LoopLoadElim
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LoopPredication
[SCEVExpander] Attempt to reinfer flags dropped due to CSE (#72431)
2023-12-07 13:20:36 -08:00
LoopReroll
[Tests] Add disjoint flag to some tests (NFC)
2023-12-05 14:09:36 +01:00
LoopRotate
[DebugInfo][RemoveDIs] Avoid crash and output-difference in loop-rotate (#74093)
2023-12-05 11:22:07 +00:00
LoopSimplify
[SCEV] Make invalidation in SCEVCallbackVH more thorough (#68316)
2023-10-10 10:55:57 +02:00
LoopSimplifyCFG
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LoopStrengthReduce
[AMDGPU] - Add address space for strided buffers (#74471)
2023-12-15 15:49:25 +01:00
LoopTransformWarning
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LoopUnroll
[InstCombine] Improve foldICmpWithDominatingICmp with DomConditionCache (#75370)
2023-12-14 21:02:10 +08:00
LoopUnrollAndJam
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LoopVectorize
[TLI][NFC] Autogenerate vectorized call tests for SLEEF/ArmPL. (#76146)
2023-12-22 16:29:18 +00:00
LoopVersioning
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LoopVersioningLICM
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LowerAtomic
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LowerConstantIntrinsics
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LowerExpectIntrinsic
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LowerGlobalDestructors
[LowerGlobalDtors] Skip __cxa_atexit call completely when arg0 is unused (#68758)
2023-10-23 10:08:08 -07:00
LowerGuardIntrinsic
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LowerIFunc
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LowerInvoke
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LowerMatrixIntrinsics
[InstCombine] Replace non-demanded undef vector with poison
2023-12-18 16:12:37 +01:00
LowerSwitch
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LowerTypeTests
[CFI] Fix Direct Call Issues in CFI Dispatch Table (#69663)
2023-12-06 12:56:59 -08:00
LowerWidenableCondition
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MakeGuardsExplicit
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Mem2Reg
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
MemCpyOpt
[IR] Add dead_on_unwind attribute (#74289)
2023-12-14 09:58:14 +01:00
MemProfContextDisambiguation
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MergedLoadStoreMotion
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
MergeFunc
[MergeFunc] Fix comparison of constant expressions
2023-12-20 15:59:02 +01:00
MergeICmps
[opt] Infer DataLayout from triple if not specified
2023-10-26 12:07:37 -07:00
MetaRenamer
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MoveAutoInit
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NameAnonGlobals
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NaryReassociate
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NewGVN
Add target REQUIRES to 3 more tests
2023-10-26 17:41:05 -07:00
ObjCARC
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OpenMP
[AMDGPU] - Add address space for strided buffers (#74471)
2023-12-15 15:49:25 +01:00
PartialInlining
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PartiallyInlineLibCalls
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PGOProfile
[test]For ThinLTO icp test, require llvm-64-bit given the raw profile data is generated on 64-bit systems (#76005)
2023-12-19 20:11:39 -08:00
PhaseOrdering
[ConstraintElim] Add (UGE, var, 0) to unsigned system for new vars. (#76262)
2023-12-23 15:53:48 +01:00
PlaceSafepoints
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PreISelIntrinsicLowering/X86
Reland "[Intrinsics][ObjC] Mark objc_retain and friends as thisreturn."
2023-11-06 11:10:59 -08:00
Reassociate
[Reassociate] Preserve NUW flags after expr tree rewriting (#72360)
2023-12-09 16:45:48 +08:00
Reg2Mem
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RelLookupTableConverter/X86
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RewriteStatepointsForGC
Improvements to RS4GC BDV Algorithm (#69795)
2023-11-02 20:19:40 -04:00
SafeStack
[RemoveDIs] Handle DPValues in replaceDbgDeclare (#73507)
2023-12-12 15:25:08 +00:00
SampleProfile
[BPI] Reuse the AsmWriter's BB naming scheme in BranchProbabilityPrinterPass (#73593)
2023-12-02 13:01:48 -08:00
ScalarizeMaskedMemIntrin
[ScalarizeMaskedMemIntrin] Add missing lit.local.cfg (NFC)
2023-10-23 15:08:53 +02:00
Scalarizer
Reland "VectorUtils: mark xrint as trivially vectorizable" (#71416)
2023-11-06 18:49:49 +00:00
SCCP
[DebugInfo][RemoveDIs] Make debugify pass convert to/from RemoveDIs mode (#73251)
2023-11-29 13:19:50 +00:00
SeparateConstOffsetFromGEP
[opt] Infer DataLayout from triple if not specified
2023-10-26 12:07:37 -07:00
SimpleLoopUnswitch
[ValueTracking] Add dominating condition support in computeKnownBits() (#73662)
2023-12-06 14:17:18 +01:00
SimplifyCFG
[ValueTracking] Add dominating condition support in computeKnownBits() (#73662)
2023-12-06 14:17:18 +01:00
Sink
[Sink] Fix bugs of sinking unreachable BB from phi (#68576)
2023-10-09 22:34:44 +08:00
SLPVectorizer
[SLP]Fix PR75995: drop wrapping flags for resized wrapped binops.
2023-12-20 06:51:39 -08:00
SpeculativeExecution
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SROA
[SROA] Use memcpy if type size does not match store size
2023-12-22 10:19:22 +01:00
StraightLineStrengthReduce
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StripDeadPrototypes
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StripSymbols
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StructurizeCFG
[LowerSwitch] Don't let pass manager handle the dependency (#68662)
2023-10-25 09:24:36 +08:00
SyntheticCountsPropagation
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TailCallElim
[IR][TRE] Support associative intrinsics (#74226)
2023-12-04 22:35:59 -08:00
ThinLTOBitcodeWriter
[ThinLTOBitcodeWriter] Do not crash on a typed declaration (#69564)
2023-10-24 04:29:53 +07:00
TypePromotion
[opt] Infer DataLayout from triple if not specified
2023-10-26 12:07:37 -07:00
UnifyFunctionExitNodes
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UnifyLoopExits
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Util
[RemoveDIs] Support DPValue dbg.declares in MemoryOpRemark (#74108)
2023-12-13 12:47:20 +00:00
VectorCombine
[VectorCombine] Fix crash in scalarizeVPIntrinsic (#72039)
2023-11-11 19:54:15 -05:00
WholeProgramDevirt
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