llvm-project/llvm/lib/Analysis
Max Kazantsev 0a1d394bf3 [NFC] Refactor loop-invariant getters to return Optional 2020-11-13 15:03:10 +07:00
..
models/inliner [MLInliner] Simplify TFUTILS_SUPPORTED_TYPES 2020-08-25 14:19:39 -07:00
AliasAnalysis.cpp [AA] Pass query info. 2020-10-29 18:07:53 -07:00
AliasAnalysisEvaluator.cpp [IR] Replace all uses of CallBase::getCalledValue() with getCalledOperand(). 2020-04-27 22:17:03 -07:00
AliasAnalysisSummary.cpp AliasAnalysisSummary.h - cleanup includes and forward declarations. NFC. 2020-04-21 11:32:58 +01:00
AliasAnalysisSummary.h AliasAnalysisSummary.h - cleanup includes and forward declarations. NFC. 2020-04-21 11:32:58 +01:00
AliasSetTracker.cpp [NewPM] Port -print-alias-sets to NPM 2020-09-16 18:34:56 -07:00
Analysis.cpp [NPM] Port module-debuginfo pass to the new pass manager 2020-10-19 14:31:17 -07:00
AssumeBundleQueries.cpp Reland [AssumeBundles] Use operand bundles to encode alignment assumptions 2020-09-12 15:36:06 +02:00
AssumptionCache.cpp [Analysis] findAffectedValues - remove unused ConstantInt argument. NFCI. 2020-10-13 14:35:18 +01:00
BasicAliasAnalysis.cpp [BasicAA] Remove checks for GEP decomposition limit reached 2020-11-12 20:43:38 +01:00
BlockFrequencyInfo.cpp [BFI][CGP] Add limited support for detecting missed BFI updates and fix one in CodeGenPrepare. 2020-05-07 11:58:00 -07:00
BlockFrequencyInfoImpl.cpp [BFI] Add a debug check for unknown block queries. 2020-02-04 10:05:28 -08:00
BranchProbabilityInfo.cpp Revert "[BranchProbabilityInfo] Use SmallVector (NFC)" 2020-11-10 19:17:13 -08:00
CFG.cpp [CFG] Replace hardcoded max BBs explored as CL option. NFC. 2020-10-30 15:11:48 -04:00
CFGPrinter.cpp [CFG] Turning on Heat Colors for CFG by default 2020-04-29 20:44:10 +00:00
CFLAndersAliasAnalysis.cpp [ADT/STLExtras.h] - Add llvm::is_sorted wrapper and update callers. 2020-04-14 14:11:02 +03:00
CFLGraph.h
CFLSteensAliasAnalysis.cpp
CGSCCPassManager.cpp [CGSCC][Inliner] Handle new non-trivial edges in updateCGAndAnalysisManagerForPass 2020-11-11 13:43:49 -08:00
CMakeLists.txt [IRSim] Adding IR Instruction Mapper 2020-09-17 14:06:16 -05:00
CallGraph.cpp [CallGraph] Preserve call records vector when replacing call edge 2020-07-27 06:02:55 -07:00
CallGraphSCCPass.cpp Skip analysis re-computation when no changes are reported 2020-08-28 21:41:01 +02:00
CallPrinter.cpp Revert rG5dd566b7c7b78bd- "PassManager.h - remove unnecessary Function.h/Module.h includes. NFCI." 2020-07-24 13:02:33 +01:00
CaptureTracking.cpp [CaptureTracking] Add statistics (NFC) 2020-11-07 12:57:00 +01:00
CmpInstAnalysis.cpp
CodeMetrics.cpp CodeMetrics.cpp - remove unused includes. NFC. 2020-05-10 16:59:55 +01:00
ConstantFolding.cpp [AMDGPU] Add new llvm.amdgcn.fma.legacy intrinsic 2020-10-16 17:10:21 +01:00
ConstraintSystem.cpp [ConstraintSystem] Remove local variable that is set but not read [NFC] 2020-09-17 14:26:48 +02:00
CostModel.cpp [CostModel] add cl option to check size and latency costs; NFC 2020-09-27 09:52:56 -04:00
DDG.cpp [DDG] Data Dependence Graph - Graph Simplification 2020-02-19 13:41:51 -05:00
Delinearization.cpp [Delinearization][NewPM] Port delinearization to NPM 2020-09-21 17:59:08 -07:00
DemandedBits.cpp [DemandedBits][BDCE] Add support for min/max intrinsics 2020-09-10 22:13:31 +02:00
DependenceAnalysis.cpp [NFC][SCEV] Rename SCEVCastExpr into SCEVIntegralCastExpr 2020-10-19 10:59:53 +03:00
DependenceGraphBuilder.cpp SmallPtrSet::find -> SmallPtrSet::count 2020-06-07 22:38:08 +02:00
DevelopmentModeInlineAdvisor.cpp [NFC][MLInliner] Getters should return by reference 2020-10-07 13:55:38 -07:00
DivergenceAnalysis.cpp [DA][SDA] SyncDependenceAnalysis re-write 2020-09-30 17:36:26 +02:00
DomPrinter.cpp [CFGPrinter][CallPrinter][polly] Adding distinct structure for CFGDOTInfo 2020-04-06 17:42:54 +00:00
DomTreeUpdater.cpp [DomTreeUpdater] Use const auto * when iterating over pointers (NFC). 2020-07-10 16:39:15 +01:00
DominanceFrontier.cpp
EHPersonalities.cpp Rename EHPersonality::MSVC_Win64SEH to EHPersonality::MSVC_TableSEH. NFC. 2020-10-27 23:22:13 -07:00
FunctionPropertiesAnalysis.cpp Use llvm::size rather than an empty loop to get the number of top 2020-07-23 14:55:50 -07:00
GlobalsModRef.cpp [GlobalsAA] Teach to handle `addrspacecast`. 2020-11-09 00:04:52 -05:00
GuardUtils.cpp [NFC] Remove trailing space 2020-02-18 10:49:13 +08:00
HeatUtils.cpp [CallPrinter] Remove static constructor. 2020-06-17 13:02:58 +02:00
IRSimilarityIdentifier.cpp [IRSim] Adding wrapper pass for IRSimilarityIdentfier 2020-09-24 14:59:41 -05:00
IVDescriptors.cpp [LV] Tail folded inloop reductions. 2020-10-11 16:58:34 +01:00
IVUsers.cpp
IndirectCallPromotionAnalysis.cpp [CallSite removal] Remove unneeded includes of CallSite.h. NFC 2020-04-22 00:07:13 -07:00
InlineAdvisor.cpp [InlineAdvisor] New inliner advisor to replay inlining from optimization remarks 2020-08-15 20:17:21 -07:00
InlineCost.cpp [InlineCost] Fix scalable vectors in visitAlloca 2020-08-17 10:34:27 +00:00
InlineSizeEstimatorAnalysis.cpp [NFC][MLInliner] Presort instruction successions. 2020-09-10 21:40:49 -07:00
InstCount.cpp [NFC] Port InstCount pass to new pass manager 2020-08-21 12:39:42 +03:00
InstructionPrecedenceTracking.cpp [IPT] Don't use OrderedInstructions (NFC) 2020-04-20 18:25:31 +02:00
InstructionSimplify.cpp [InstSimplify] allow vector folds for (Pow2C << X) == NonPow2C 2020-11-08 09:52:05 -05:00
Interval.cpp
IntervalPartition.cpp
LLVMBuild.txt [llvm][NFC] Move content of ML subdirectory into Analysis 2020-06-15 14:35:33 -07:00
LazyBlockFrequencyInfo.cpp
LazyBranchProbabilityInfo.cpp
LazyCallGraph.cpp [LazyCallGraph] Build SCCs of the reference graph in order 2020-11-02 13:22:42 -08:00
LazyValueInfo.cpp [LVI][CVP] Use block value when simplifying icmps 2020-09-27 20:25:16 +02:00
LegacyDivergenceAnalysis.cpp Resubmit: [DA][TTI][AMDGPU] Add option to select GPUDA with TTI 2020-01-24 10:39:40 -08:00
Lint.cpp OpaquePtr: Add helpers for sret to mirror byval 2020-09-24 09:57:28 -04:00
Loads.cpp [Deref] Use maximum trip count instead of exact trip count 2020-10-28 14:33:30 -07:00
LoopAccessAnalysis.cpp [LAA] Use DL to get element size for bound computation. 2020-10-07 18:57:07 +01:00
LoopAnalysisManager.cpp Add PassManagerImpl.h to hide implementation details 2020-02-03 11:15:55 -08:00
LoopCacheAnalysis.cpp [LoopInfo] empty() -> isInnermost(), add isOutermost() 2020-09-22 23:28:51 +03:00
LoopInfo.cpp [LangRef] Adds llvm.loop.mustprogress loop metadata 2020-11-04 22:32:50 -05:00
LoopNestAnalysis.cpp [LoopInfo] empty() -> isInnermost(), add isOutermost() 2020-09-22 23:28:51 +03:00
LoopPass.cpp [LoopInfo] empty() -> isInnermost(), add isOutermost() 2020-09-22 23:28:51 +03:00
LoopUnrollAnalyzer.cpp ScalarEvolution.h - reduce LoopInfo.h include to forward declarations. NFC. 2020-06-17 15:48:23 +01:00
MLInlineAdvisor.cpp Reapply "Rename InlineFeatureAnalysis to FunctionPropertiesAnalysis" 2020-07-22 10:07:35 -07:00
MemDepPrinter.cpp GVN.h - reduce AliasAnalysis.h include to forward declaration. NFC. 2020-06-25 16:59:35 +01:00
MemDerefPrinter.cpp Loads.h - reduce AliasAnalysis.h include to forward declarations. NFC. 2020-06-24 13:49:04 +01:00
MemoryBuiltins.cpp Analysis: only query size of sized objects. 2020-10-14 12:16:05 +01:00
MemoryDependenceAnalysis.cpp Handle masked loads and stores in MemoryLocation/Dependence 2020-09-08 19:08:44 -05:00
MemoryLocation.cpp [MemLoc] Adjust memccpy support in MemoryLocation::getForArgument 2020-10-28 21:26:10 +01:00
MemorySSA.cpp Reland: Introduce -dot-cfg-mssa option which creates dot-cfg style file with mssa comments included in source 2020-11-12 17:39:14 +00:00
MemorySSAUpdater.cpp [MemorySSA] Rename uses in blocks with Phis. 2020-09-16 17:24:17 -07:00
ModuleDebugInfoPrinter.cpp [NPM] Port module-debuginfo pass to the new pass manager 2020-10-19 14:31:17 -07:00
ModuleSummaryAnalysis.cpp [StackSafety] Use ValueInfo in ParamAccess::Call 2020-08-14 12:42:44 -07:00
MustExecute.cpp Port print-must-be-executed-contexts and print-mustexecute to NPM 2020-11-03 21:06:46 -08:00
ObjCARCAliasAnalysis.cpp [ObjCARCAA][NewPM] Add already ported objc-arc-aa to PassRegistry.def 2020-09-30 08:50:44 -07:00
ObjCARCAnalysisUtils.cpp
ObjCARCInstKind.cpp [Analysis/Transforms/Sanitizers] As part of using inclusive language 2020-06-20 00:42:26 -07:00
OptimizationRemarkEmitter.cpp [BPI][NFC] Reuse post dominantor tree from analysis manager when available 2020-04-30 11:31:03 +07:00
PHITransAddr.cpp
PhiValues.cpp [PhiValues] Use SetVector to avoid non-determinism 2020-10-23 20:14:02 +02:00
PostDominators.cpp
ProfileSummaryInfo.cpp [NFC] Change getEntryForPercentile to be a static function in ProfileSummaryBuilder. 2020-07-09 16:38:19 -07:00
PtrUseVisitor.cpp
README.txt
RegionInfo.cpp RegionInfo.cpp - remove duplicate includes that already exist in RegionInfo.h. NFC. 2020-07-23 17:50:22 +01:00
RegionPass.cpp [NFC] Clean up always false variables 2020-10-21 10:54:55 -07:00
RegionPrinter.cpp [CFGPrinter][CallPrinter][polly] Adding distinct structure for CFGDOTInfo 2020-04-06 17:42:54 +00:00
ReleaseModeModelRunner.cpp Build: Move TF source file inclusion from build system to source files 2020-07-21 13:02:34 -04:00
ReplayInlineAdvisor.cpp [InlineAdvisor] New inliner advisor to replay inlining from optimization remarks 2020-08-15 20:17:21 -07:00
ScalarEvolution.cpp [NFC] Refactor loop-invariant getters to return Optional 2020-11-13 15:03:10 +07:00
ScalarEvolutionAliasAnalysis.cpp
ScalarEvolutionDivision.cpp [SCEV] Generalize SCEVParameterRewriter to accept SCEV expression as target. 2020-09-18 10:05:02 +01:00
ScalarEvolutionNormalization.cpp
ScopedNoAliasAA.cpp Rename scoped-noalias -> scoped-noalias-aa 2020-07-24 12:14:27 -07:00
StackLifetime.cpp When dumping results of StackLifetime, it will print the following 2020-09-07 11:43:16 +08:00
StackSafetyAnalysis.cpp [Analysis] resolveAllCalls - fix use after std::move warning. NFCI. 2020-10-03 17:52:20 +01:00
StratifiedSets.h
SyncDependenceAnalysis.cpp [SDA] Fix -Wunused-function in -DLLVM_ENABLE_ASSERTIONS=off builds 2020-10-04 12:17:16 -07:00
SyntheticCountsUtils.cpp [CallSite removal] Remove unneeded includes of CallSite.h. NFC 2020-04-22 00:07:13 -07:00
TFUtils.cpp [ML] Add final reward logging facility. 2020-10-19 08:44:50 -07:00
TargetLibraryInfo.cpp Initial support for vectorization using Libmvec (GLIBC vector math library) 2020-10-22 16:01:39 -04:00
TargetTransformInfo.cpp Revert "[LoopVectorizer] NFCI: Calculate register usage based on TLI.getTypeLegalizationCost." 2020-11-11 14:41:55 +00:00
Trace.cpp
TypeBasedAliasAnalysis.cpp
TypeMetadataUtils.cpp TypeMetadataUtils.h - reduce Instructions.h include to forward declaration. NFC. 2020-06-05 17:40:33 +01:00
VFABIDemangling.cpp [SVE] Make ElementCount members private 2020-08-28 14:43:53 +01:00
ValueLattice.cpp [ValueLattice] Distinguish between constant ranges with/without undef. 2020-03-31 12:50:20 +01:00
ValueLatticeUtils.cpp [ValueLattice] Simplify canTrackGlobalVariableInterprocedurally (NFC). 2020-07-09 18:33:09 +01:00
ValueTracking.cpp [ValueTracking] Update computeKnownBitsFromShiftOperator callbacks to take KnownBits shift amount. NFCI. 2020-11-12 16:56:55 +00:00
VectorUtils.cpp [SVE] Fix TypeSize warning in llvm::getGEPInductionOperand 2020-10-26 17:40:32 +00:00

README.txt

Analysis Opportunities:

//===---------------------------------------------------------------------===//

In test/Transforms/LoopStrengthReduce/quadradic-exit-value.ll, the
ScalarEvolution expression for %r is this:

  {1,+,3,+,2}<loop>

Outside the loop, this could be evaluated simply as (%n * %n), however
ScalarEvolution currently evaluates it as

  (-2 + (2 * (trunc i65 (((zext i64 (-2 + %n) to i65) * (zext i64 (-1 + %n) to i65)) /u 2) to i64)) + (3 * %n))

In addition to being much more complicated, it involves i65 arithmetic,
which is very inefficient when expanded into code.

//===---------------------------------------------------------------------===//

In formatValue in test/CodeGen/X86/lsr-delayed-fold.ll,

ScalarEvolution is forming this expression:

((trunc i64 (-1 * %arg5) to i32) + (trunc i64 %arg5 to i32) + (-1 * (trunc i64 undef to i32)))

This could be folded to

(-1 * (trunc i64 undef to i32))

//===---------------------------------------------------------------------===//