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IPA/03-May-2024-2,1521,457

AliasAnalysis.cppD03-May-202415.2 KiB443263

AliasAnalysisCounter.cppD03-May-20246.2 KiB174133

AliasAnalysisEvaluator.cppD03-May-202410.9 KiB305245

AliasDebugger.cppD03-May-20244.8 KiB13989

AliasSetTracker.cppD03-May-202421.6 KiB652452

Analysis.cppD03-May-20243.7 KiB10685

BasicAliasAnalysis.cppD03-May-202447.7 KiB1,236755

BlockFrequencyInfo.cppD03-May-20242.1 KiB6435

BranchProbabilityInfo.cppD03-May-202414.7 KiB512328

CFGPrinter.cppD03-May-20244.9 KiB166107

CaptureTracking.cppD03-May-20246.1 KiB14976

ConstantFolding.cppD03-May-202454.9 KiB1,4131,008

DIBuilder.cppD03-May-202437.8 KiB940764

DbgInfoPrinter.cppD03-May-20246.3 KiB225166

DebugInfo.cppD03-May-202432.6 KiB1,144820

DomPrinter.cppD03-May-20246.7 KiB233166

DominanceFrontier.cppD03-May-20244.3 KiB138101

INSTALL.vcxproj.filtersD03-May-2024657 2524

IVUsers.cppD03-May-20249.5 KiB274187

InlineCost.cppD03-May-202425.3 KiB656336

InstCount.cppD03-May-20242.7 KiB8856

InstructionSimplify.cppD03-May-202498 KiB2,5761,720

Interval.cppD03-May-20242 KiB5928

IntervalPartition.cppD03-May-20244.2 KiB11551

LLVMAnalysis.vcxprojD03-May-202425.7 KiB386386

LLVMAnalysis.vcxproj.filtersD03-May-20242.8 KiB9090

LazyValueInfo.cppD03-May-202437.8 KiB1,129784

LibCallAliasAnalysis.cppD03-May-20245.2 KiB13869

LibCallSemantics.cppD03-May-20242.1 KiB6428

Lint.cppD03-May-202424.9 KiB656486

Loads.cppD03-May-20249.4 KiB241130

LoopDependenceAnalysis.cppD03-May-202412.9 KiB365258

LoopInfo.cppD03-May-202425 KiB706413

LoopPass.cppD03-May-202411.4 KiB379230

MakefileD03-May-2024441 175

MemDepPrinter.cppD03-May-20246.3 KiB193150

MemoryBuiltins.cppD03-May-20247.6 KiB214121

MemoryDependenceAnalysis.cppD03-May-202460.2 KiB1,486849

ModuleDebugInfoPrinter.cppD03-May-20242.6 KiB8860

NoAliasAnalysis.cppD03-May-20243.1 KiB8952

PACKAGE.vcxproj.filtersD03-May-2024657 2524

PHITransAddr.cppD03-May-202416 KiB443274

PathNumbering.cppD03-May-202416.2 KiB523328

PathProfileInfo.cppD03-May-202413.9 KiB435275

PathProfileVerifier.cppD03-May-20246.9 KiB208141

PostDominators.cppD03-May-20241.5 KiB5226

ProfileEstimatorPass.cppD03-May-202415.8 KiB427289

ProfileInfo.cppD03-May-202432.9 KiB1,106880

ProfileInfoLoader.cppD03-May-20244.8 KiB158105

ProfileInfoLoaderPass.cppD03-May-20249.3 KiB268198

ProfileVerifierPass.cppD03-May-202413.4 KiB383294

README.txtD03-May-20241,006 3117

RegionInfo.cppD03-May-202422.7 KiB852589

RegionPass.cppD03-May-20248.5 KiB276159

RegionPrinter.cppD03-May-20246.7 KiB221160

ScalarEvolution.cppD03-May-2024266.2 KiB6,7454,574

ScalarEvolutionAliasAnalysis.cppD03-May-20246.7 KiB17495

ScalarEvolutionExpander.cppD03-May-202461.7 KiB1,5791,057

ScalarEvolutionNormalization.cppD03-May-20248.6 KiB226149

SparsePropagation.cppD03-May-202411.9 KiB348212

Trace.cppD03-May-20241.6 KiB5225

TypeBasedAliasAnalysis.cppD03-May-202410.2 KiB301161

ValueTracking.cppD03-May-202470.3 KiB1,7961,192

README.txt

1Analysis Opportunities:
2
3//===---------------------------------------------------------------------===//
4
5In test/Transforms/LoopStrengthReduce/quadradic-exit-value.ll, the
6ScalarEvolution expression for %r is this:
7
8  {1,+,3,+,2}<loop>
9
10Outside the loop, this could be evaluated simply as (%n * %n), however
11ScalarEvolution currently evaluates it as
12
13  (-2 + (2 * (trunc i65 (((zext i64 (-2 + %n) to i65) * (zext i64 (-1 + %n) to i65)) /u 2) to i64)) + (3 * %n))
14
15In addition to being much more complicated, it involves i65 arithmetic,
16which is very inefficient when expanded into code.
17
18//===---------------------------------------------------------------------===//
19
20In formatValue in test/CodeGen/X86/lsr-delayed-fold.ll,
21
22ScalarEvolution is forming this expression:
23
24((trunc i64 (-1 * %arg5) to i32) + (trunc i64 %arg5 to i32) + (-1 * (trunc i64 undef to i32)))
25
26This could be folded to
27
28(-1 * (trunc i64 undef to i32))
29
30//===---------------------------------------------------------------------===//
31