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a single class. Previously it was split between two classes, one internal and one external. The concern seemed to center around exposing the weights used, but those can remain confined to the implementation file. Having a single class to maintain the state and analyses in use will also simplify several of the enhancements I want to make to our static heuristics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142783 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
IPA | ||
AliasAnalysis.cpp | ||
AliasAnalysisCounter.cpp | ||
AliasAnalysisEvaluator.cpp | ||
AliasDebugger.cpp | ||
AliasSetTracker.cpp | ||
Analysis.cpp | ||
BasicAliasAnalysis.cpp | ||
BlockFrequencyInfo.cpp | ||
BranchProbabilityInfo.cpp | ||
CaptureTracking.cpp | ||
CFGPrinter.cpp | ||
CMakeLists.txt | ||
ConstantFolding.cpp | ||
DbgInfoPrinter.cpp | ||
DebugInfo.cpp | ||
DIBuilder.cpp | ||
DominanceFrontier.cpp | ||
DomPrinter.cpp | ||
InlineCost.cpp | ||
InstCount.cpp | ||
InstructionSimplify.cpp | ||
Interval.cpp | ||
IntervalPartition.cpp | ||
IVUsers.cpp | ||
LazyValueInfo.cpp | ||
LibCallAliasAnalysis.cpp | ||
LibCallSemantics.cpp | ||
Lint.cpp | ||
Loads.cpp | ||
LoopDependenceAnalysis.cpp | ||
LoopInfo.cpp | ||
LoopPass.cpp | ||
Makefile | ||
MemDepPrinter.cpp | ||
MemoryBuiltins.cpp | ||
MemoryDependenceAnalysis.cpp | ||
ModuleDebugInfoPrinter.cpp | ||
NoAliasAnalysis.cpp | ||
PathNumbering.cpp | ||
PathProfileInfo.cpp | ||
PathProfileVerifier.cpp | ||
PHITransAddr.cpp | ||
PostDominators.cpp | ||
ProfileEstimatorPass.cpp | ||
ProfileInfo.cpp | ||
ProfileInfoLoader.cpp | ||
ProfileInfoLoaderPass.cpp | ||
ProfileVerifierPass.cpp | ||
README.txt | ||
RegionInfo.cpp | ||
RegionPass.cpp | ||
RegionPrinter.cpp | ||
ScalarEvolution.cpp | ||
ScalarEvolutionAliasAnalysis.cpp | ||
ScalarEvolutionExpander.cpp | ||
ScalarEvolutionNormalization.cpp | ||
SparsePropagation.cpp | ||
Trace.cpp | ||
TypeBasedAliasAnalysis.cpp | ||
ValueTracking.cpp |
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)) //===---------------------------------------------------------------------===//