llvm-project/llvm/lib/Analysis
Wenlei He 60c642e74b [TLI] Per-function fveclib for math library used for vectorization
Summary:
Encode `-fveclib` setting as per-function attribute so it can threaded through to LTO backends. Accordingly per-function TLI now reads
the attributes and select available vector function list based on that. Now we also populate function list for all supported vector
libraries for the shared per-module `TargetLibraryInfoImpl`, so each function can select its available vector list independently but without
duplicating the vector function lists. Inlining between incompatbile vectlib attributed is also prohibited now.

Subscribers: hiraditya, dexonsmith, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77632
2020-04-09 18:26:38 -07:00
..
AliasAnalysis.cpp [IR] Lazily number instructions for local dominance queries 2020-02-18 14:44:24 -08:00
AliasAnalysisEvaluator.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
AliasAnalysisSummary.cpp Move CFLGraph and the AA summary code over to the new `CallBase` 2019-02-11 09:25:41 +00:00
AliasAnalysisSummary.h Move CFLGraph and the AA summary code over to the new `CallBase` 2019-02-11 09:25:41 +00:00
AliasSetTracker.cpp [NFC] Remove trailing space 2020-02-18 10:49:13 +08:00
Analysis.cpp [MustExec] Add a generic "must-be-executed-context" explorer 2019-08-23 15:17:27 +00:00
AssumeBundleQueries.cpp [NFC] Split Knowledge retention and place it more appropriatly 2020-04-02 15:01:41 +02:00
AssumptionCache.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
BasicAliasAnalysis.cpp Remove SequentialType from the type heirarchy. 2020-04-06 17:03:49 -07:00
BlockFrequencyInfo.cpp [CFG/BasicBlock] Rename succ_const to const_succ. [NFC] 2020-03-25 12:40:55 -07:00
BlockFrequencyInfoImpl.cpp [BFI] Add a debug check for unknown block queries. 2020-02-04 10:05:28 -08:00
BranchProbabilityInfo.cpp [BPI] Clear handles when releasing memory (NFC) 2020-04-07 22:51:01 +02:00
CFG.cpp [CFG/BasicBlock] Rename succ_const to const_succ. [NFC] 2020-03-25 12:40:55 -07:00
CFGPrinter.cpp [CFGPrinter] Adding heat coloring to CFGPrinter 2020-04-08 19:59:51 +00:00
CFLAndersAliasAnalysis.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
CFLGraph.h [CFLGraph] Add support for unary fneg instruction. 2019-06-06 19:21:23 +00:00
CFLSteensAliasAnalysis.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
CGSCCPassManager.cpp Extend TimeTrace to LLVM's new pass manager 2020-03-06 14:45:19 -08:00
CMakeLists.txt [CFGPrinter] Adding heat coloring to CFGPrinter 2020-04-08 19:59:51 +00:00
CallGraph.cpp Introduce a CallGraph updater helper class 2020-02-08 14:16:48 -06:00
CallGraphSCCPass.cpp Introduce a CallGraph updater helper class 2020-02-08 14:16:48 -06:00
CallPrinter.cpp Make llvm::StringRef to std::string conversions explicit. 2020-01-28 23:25:25 +01:00
CaptureTracking.cpp [IR] Lazily number instructions for local dominance queries 2020-02-18 14:44:24 -08:00
CmpInstAnalysis.cpp
CodeMetrics.cpp Remove `CallSite` from the CodeMetrics analysis, moving it to the new 2019-02-11 09:03:32 +00:00
ConstantFolding.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00
CostModel.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
DDG.cpp [DDG] Data Dependence Graph - Graph Simplification 2020-02-19 13:41:51 -05:00
Delinearization.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
DemandedBits.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
DependenceAnalysis.cpp [DA] Delinearization of fixed-size multi-dimensional arrays 2020-02-27 10:29:01 -05:00
DependenceGraphBuilder.cpp [DDG] Data Dependence Graph - Graph Simplification 2020-02-19 13:41:51 -05:00
DivergenceAnalysis.cpp [DA] Don't propagate from unreachable blocks 2020-01-24 10:28:11 -08:00
DomPrinter.cpp [CFGPrinter][CallPrinter][polly] Adding distinct structure for CFGDOTInfo 2020-04-06 17:42:54 +00:00
DomTreeUpdater.cpp [NFC] Fixes -Wrange-loop-analysis warnings 2020-01-01 20:01:37 +01:00
DominanceFrontier.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
EHPersonalities.cpp
GlobalsModRef.cpp [GlobalsModRef] Add invalidate method 2020-01-17 10:33:54 -08:00
GuardUtils.cpp [NFC] Remove trailing space 2020-02-18 10:49:13 +08:00
HeatUtils.cpp [CFGPrinter] Adding heat coloring to CFGPrinter 2020-04-08 19:59:51 +00:00
IVDescriptors.cpp [IVDescriptors] Remove unnecessary DemandedBits.h include; NFC 2020-04-04 12:07:57 +02:00
IVUsers.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
IndirectCallPromotionAnalysis.cpp Add missing includes needed to prune LLVMContext.h include, NFC 2019-11-14 15:23:15 -08:00
InlineCost.cpp [TLI] Per-function fveclib for math library used for vectorization 2020-04-09 18:26:38 -07:00
InstCount.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
InstructionPrecedenceTracking.cpp [NFC] Remove obsolete checks followed by fix of isGuaranteedToTransferExecutionToSuccessor 2020-03-30 12:24:41 +07:00
InstructionSimplify.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00
Interval.cpp
IntervalPartition.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
LLVMBuild.txt
LazyBlockFrequencyInfo.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
LazyBranchProbabilityInfo.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
LazyCallGraph.cpp [LazyCallGraph] Fix ambiguous index value 2020-02-18 23:32:55 -05:00
LazyValueInfo.cpp [ValueLattice] Distinguish between constant ranges with/without undef. 2020-03-31 12:50:20 +01:00
LegacyDivergenceAnalysis.cpp Resubmit: [DA][TTI][AMDGPU] Add option to select GPUDA with TTI 2020-01-24 10:39:40 -08:00
Lint.cpp [ConstantFolding] Always return something from ConstantFoldConstant 2020-03-04 18:24:47 +01:00
Loads.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00
LoopAccessAnalysis.cpp [VectorUtils] Rework the Vector Function Database (VFDatabase). 2020-01-16 15:08:26 +00:00
LoopAnalysisManager.cpp Add PassManagerImpl.h to hide implementation details 2020-02-03 11:15:55 -08:00
LoopCacheAnalysis.cpp [LoopCacheAnalysis]: Add support for negative stride 2020-02-10 13:22:35 -05:00
LoopInfo.cpp Rename LoopInfo::isRotated() to LoopInfo::isRotatedForm(). 2019-12-12 14:22:36 -05:00
LoopNestAnalysis.cpp [LoopNest]: Analysis to discover properties of a loop nest. 2020-03-03 18:25:19 +00:00
LoopPass.cpp NFC. Remove obsolete SimpleAnalysis infrastructure 2020-01-23 13:58:30 +07:00
LoopUnrollAnalyzer.cpp [InstSimplify] Rename SimplifyFPUnOp and SimplifyFPBinOp 2019-07-24 12:50:10 +00:00
MemDepPrinter.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
MemDerefPrinter.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
MemoryBuiltins.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00
MemoryDependenceAnalysis.cpp [DependenceAnalysis] Dependecies for loads marked with "ivnariant.load" should not be shared with general accesses(PR42151). 2020-03-04 18:40:02 +07:00
MemoryLocation.cpp [IR] Split out target specific intrinsic enums into separate headers 2019-12-11 18:02:14 -08:00
MemorySSA.cpp [MemorySSA] Don't verify MemorySSA unless VerifyMemorySSA enabled 2020-02-13 18:46:58 +01:00
MemorySSAUpdater.cpp [GraphDiff] Extend GraphDiff to track a list of updates. 2020-04-03 12:10:36 -07:00
ModuleDebugInfoPrinter.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
ModuleSummaryAnalysis.cpp [NFC] Remove trailing space 2020-02-18 10:49:13 +08:00
MustExecute.cpp [Attributor] Detect possibly unbounded cycles in functions 2020-03-13 11:17:33 -05:00
ObjCARCAliasAnalysis.cpp [AliasAnalysis] Second prototype to cache BasicAA / anyAA state. 2019-03-22 17:22:19 +00:00
ObjCARCAnalysisUtils.cpp
ObjCARCInstKind.cpp [ObjC][ARC] Delete ObjC runtime calls on global variables annotated 2019-06-14 22:06:32 +00:00
OptimizationRemarkEmitter.cpp Compute ORE, BPI, BFI in Loop passes. 2020-02-12 09:15:18 -08:00
OrderedInstructions.cpp [IR] Lazily number instructions for local dominance queries 2020-02-18 14:44:24 -08:00
PHITransAddr.cpp
PhiValues.cpp [PhiValues] Remove redundant map searches 2019-11-23 10:32:56 +02:00
PostDominators.cpp [CodeMoverUtils] Added an API to check if an instruction can be safely 2019-11-22 21:29:08 +00:00
ProfileSummaryInfo.cpp [PSI] Add the isCold query support with a given percentile value. 2020-03-02 12:50:15 -08:00
PtrUseVisitor.cpp SROA: Allow eliminating addrspacecasted allocas 2019-06-14 21:38:31 +00:00
README.txt
RegionInfo.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
RegionPass.cpp [IR] Refactor attribute methods in Function class (NFC) 2019-04-04 22:40:06 +00:00
RegionPrinter.cpp [CFGPrinter][CallPrinter][polly] Adding distinct structure for CFGDOTInfo 2020-04-06 17:42:54 +00:00
ScalarEvolution.cpp Remove SequentialType from the type heirarchy. 2020-04-06 17:03:49 -07:00
ScalarEvolutionAliasAnalysis.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
ScalarEvolutionExpander.cpp Revert "[LSR] re-add testcase for wrongly phi node elimination - NFC" 2020-04-01 12:58:06 +00:00
ScalarEvolutionNormalization.cpp
ScopedNoAliasAA.cpp Sink all InitializePasses.h includes 2019-11-13 16:34:37 -08:00
StackSafetyAnalysis.cpp [memtag] Plug in stack safety analysis. 2020-03-16 16:35:25 -07:00
StratifiedSets.h
SyncDependenceAnalysis.cpp [CFG/BasicBlock] Rename succ_const to const_succ. [NFC] 2020-03-25 12:40:55 -07:00
SyntheticCountsUtils.cpp
TargetLibraryInfo.cpp [TLI] Per-function fveclib for math library used for vectorization 2020-04-09 18:26:38 -07:00
TargetTransformInfo.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00
Trace.cpp
TypeBasedAliasAnalysis.cpp [Metadata] Add TBAA struct metadata to `AAMDNode` 2020-01-06 11:05:15 +03:00
TypeMetadataUtils.cpp Reland: Dead Virtual Function Elimination 2019-10-17 09:58:57 +00:00
VFABIDemangling.cpp [llvm][VectorUtils] Tweak VFShape for scalable vector functions. 2020-01-30 05:53:56 +00:00
ValueLattice.cpp [ValueLattice] Distinguish between constant ranges with/without undef. 2020-03-31 12:50:20 +01:00
ValueLatticeUtils.cpp
ValueTracking.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00
VectorUtils.cpp Clean up usages of asserting vector getters in Type 2020-04-09 12:41:28 -07:00

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))

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