llvm-project/llvm/lib/Analysis
Jinsong Ji 9912232b46 Revert "[LoopVectorize][PowerPC] Estimate int and float register pressure separately in loop-vectorize"
Also Revert "[LoopVectorize] Fix non-debug builds after rL374017"

This reverts commit 9f41deccc0.
This reverts commit 18b6fe07bc.

The patch is breaking PowerPC internal build, checked with author, reverting
on behalf of him for now due to timezone.

llvm-svn: 374091
2019-10-08 17:32:56 +00:00
..
AliasAnalysis.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
AliasAnalysisEvaluator.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
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 [LICM/AST] Check if the AliasAny set is removed from the tracker. 2019-09-12 18:09:47 +00:00
Analysis.cpp [MustExec] Add a generic "must-be-executed-context" explorer 2019-08-23 15:17:27 +00:00
AssumptionCache.cpp Fix: Actually erase remove the elements from AssumeHandles 2019-10-02 17:35:06 +00:00
BasicAliasAnalysis.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
BlockFrequencyInfo.cpp Add optional arg to profile count getters to filter 2019-04-24 19:51:16 +00:00
BlockFrequencyInfoImpl.cpp Add optional arg to profile count getters to filter 2019-04-24 19:51:16 +00:00
BranchProbabilityInfo.cpp [BPI] Adjust the probability for floating point unordered comparison 2019-09-10 17:25:11 +00:00
CFG.cpp Recommit "[GVN] Preserve loop related analysis/canonical forms." 2019-07-31 09:27:54 +00:00
CFGPrinter.cpp Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC 2019-08-05 05:43:48 +00:00
CFLAndersAliasAnalysis.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
CFLGraph.h [CFLGraph] Add support for unary fneg instruction. 2019-06-06 19:21:23 +00:00
CFLSteensAliasAnalysis.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
CGSCCPassManager.cpp Revert "[CallGraph] Refine call graph for indirect calls with !callees metadata" 2019-08-16 10:59:18 +00:00
CMakeLists.txt [SVFS] Vector Function ABI demangling. 2019-09-19 17:47:32 +00:00
CallGraph.cpp Revert "[CallGraph] Refine call graph for indirect calls with !callees metadata" 2019-08-16 10:59:18 +00:00
CallGraphSCCPass.cpp [CallSite removal] Move the legacy PM, call graph, and some inliner 2019-04-19 05:59:42 +00:00
CallPrinter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CaptureTracking.cpp [CaptureTracker] Let subclasses provide dereferenceability information 2019-08-19 21:56:38 +00:00
CmpInstAnalysis.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CodeMetrics.cpp Remove `CallSite` from the CodeMetrics analysis, moving it to the new 2019-02-11 09:03:32 +00:00
ConstantFolding.cpp [ConstantFolding] Fold constant calls to log2() 2019-09-30 20:53:23 +00:00
CostModel.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DDG.cpp [DDG] Data Dependence Graph - Root Node 2019-10-01 19:32:42 +00:00
Delinearization.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DemandedBits.cpp [DemandedBits] Remove some redundancy in the work list 2019-03-03 14:50:01 +00:00
DependenceAnalysis.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
DependenceGraphBuilder.cpp [DDG] Data Dependence Graph - Root Node 2019-10-01 19:32:42 +00:00
DivergenceAnalysis.cpp [DivergenceAnalysis] Add methods for querying divergence at use 2019-07-29 10:22:09 +00:00
DomPrinter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DomTreeUpdater.cpp [DTU] Refine the interface and logic of applyUpdates 2019-02-22 13:48:38 +00:00
DominanceFrontier.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
EHPersonalities.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
GlobalsModRef.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
GuardUtils.cpp [WideableCond] Fix a nasty bug in detection of "explicit guards" 2019-04-02 16:51:43 +00:00
IVDescriptors.cpp [IR] allow fast-math-flags on phi of FP values (2nd try) 2019-09-25 14:35:02 +00:00
IVUsers.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
IndirectCallPromotionAnalysis.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
InlineCost.cpp [SVE][IR] Scalable Vector size queries and IR instruction support 2019-10-08 12:53:54 +00:00
InstCount.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
InstructionPrecedenceTracking.cpp Make widenable condition transparent for MemoryWriteTracking 2019-02-14 11:10:29 +00:00
InstructionSimplify.cpp [InstCombine] Simplify fma multiplication to nan for undef or nan operands. 2019-10-02 12:32:52 +00:00
Interval.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
IntervalPartition.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LazyBlockFrequencyInfo.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LazyBranchProbabilityInfo.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
LazyCallGraph.cpp Second attempt to add iterator_range::empty() 2019-10-07 18:14:24 +00:00
LazyValueInfo.cpp [LVI] Look through extractvalue of insertvalue 2019-09-07 12:03:59 +00:00
LegacyDivergenceAnalysis.cpp Remove an unnecessary cast. NFC. 2019-10-02 08:56:33 +00:00
Lint.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
Loads.cpp [LV] Support invariant addresses in speculation logic 2019-09-12 16:49:10 +00:00
LoopAccessAnalysis.cpp LoopAccessAnalysis isConsecutiveAccess() - silence static analyzer dyn_cast<SCEVConstant> null dereference warning. NFCI. 2019-10-02 13:08:56 +00:00
LoopAnalysisManager.cpp [LoopPassManager + MemorySSA] Only enable use of MemorySSA for LPMs known to preserve it. 2019-08-21 17:00:57 +00:00
LoopCacheAnalysis.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
LoopInfo.cpp [LOOPGUARD] Remove asserts in getLoopGuardBranch 2019-10-06 16:39:43 +00:00
LoopPass.cpp ftime-trace: Trace loop passes 2019-05-31 10:14:04 +00:00
LoopUnrollAnalyzer.cpp [InstSimplify] Rename SimplifyFPUnOp and SimplifyFPBinOp 2019-07-24 12:50:10 +00:00
MemDepPrinter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
MemDerefPrinter.cpp OpaquePtr: add Type parameter to Loads analysis API. 2019-07-09 11:35:35 +00:00
MemoryBuiltins.cpp [Alignment][NFC] Remove unneeded llvm:: scoping on Align types 2019-09-27 12:54:21 +00:00
MemoryDependenceAnalysis.cpp Change TargetLibraryInfo analysis passes to always require Function 2019-09-07 03:09:36 +00:00
MemoryLocation.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
MemorySSA.cpp MemorySSA tryOptimizePhi - assert that we've found a DefChainEnd. NFCI. 2019-10-02 13:09:04 +00:00
MemorySSAUpdater.cpp [MemorySSA] Update Phi creation when inserting a Def. 2019-10-02 18:42:33 +00:00
ModuleDebugInfoPrinter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ModuleSummaryAnalysis.cpp IR. Change strip* family of functions to not look through aliases. 2019-08-22 19:56:14 +00:00
MustExecute.cpp [MustExec] Add a generic "must-be-executed-context" explorer 2019-08-23 15:17:27 +00:00
ObjCARCAliasAnalysis.cpp [AliasAnalysis] Second prototype to cache BasicAA / anyAA state. 2019-03-22 17:22:19 +00:00
ObjCARCAnalysisUtils.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ObjCARCInstKind.cpp [ObjC][ARC] Delete ObjC runtime calls on global variables annotated 2019-06-14 22:06:32 +00:00
OptimizationRemarkEmitter.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
OrderedBasicBlock.cpp Recommit "[DSE] Preserve basic block ordering using OrderedBasicBlock." 2019-03-29 14:10:24 +00:00
OrderedInstructions.cpp [llvm] Migrate llvm::make_unique to std::make_unique 2019-08-15 15:54:37 +00:00
PHITransAddr.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
PhiValues.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
PostDominators.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ProfileSummaryInfo.cpp [PGO][PGSO] ProfileSummary changes. 2019-09-24 22:17:51 +00:00
PtrUseVisitor.cpp SROA: Allow eliminating addrspacecasted allocas 2019-06-14 21:38:31 +00:00
README.txt
RegionInfo.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
RegionPass.cpp [IR] Refactor attribute methods in Function class (NFC) 2019-04-04 22:40:06 +00:00
RegionPrinter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ScalarEvolution.cpp Revert "[SCEV] add no wrap flag for SCEVAddExpr." 2019-09-30 07:46:52 +00:00
ScalarEvolutionAliasAnalysis.cpp [AliasAnalysis] Second prototype to cache BasicAA / anyAA state. 2019-03-22 17:22:19 +00:00
ScalarEvolutionExpander.cpp [PatternMatch] Make m_Br more flexible, add matchers for BB values. 2019-09-25 15:05:08 +00:00
ScalarEvolutionNormalization.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ScopedNoAliasAA.cpp [AliasAnalysis] Second prototype to cache BasicAA / anyAA state. 2019-03-22 17:22:19 +00:00
StackSafetyAnalysis.cpp IR. Change strip* family of functions to not look through aliases. 2019-08-22 19:56:14 +00:00
StratifiedSets.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SyncDependenceAnalysis.cpp [SDA] Don't stop divergence propagation at the IPD. 2019-09-18 13:40:22 +00:00
SyntheticCountsUtils.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
TargetLibraryInfo.cpp [TLI][AMDGPU] AMDPAL does not have library functions 2019-09-11 07:26:39 +00:00
TargetTransformInfo.cpp Revert "[LoopVectorize][PowerPC] Estimate int and float register pressure separately in loop-vectorize" 2019-10-08 17:32:56 +00:00
Trace.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
TypeBasedAliasAnalysis.cpp [AliasAnalysis] Second prototype to cache BasicAA / anyAA state. 2019-03-22 17:22:19 +00:00
TypeMetadataUtils.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
VFABIDemangling.cpp [SVFS] Vector Function ABI demangling. 2019-09-19 17:47:32 +00:00
ValueLattice.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ValueLatticeUtils.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ValueTracking.cpp Remove local shadow constant. NFCI. 2019-09-26 11:30:35 +00:00
VectorUtils.cpp InterleavedAccessInfo - Don't dereference a dyn_cast result. NFCI. 2019-09-17 13:25:56 +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))

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