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56089ea65e
Summary: WinEHPrepare is going to require that cleanuppad and catchpad produce values of token type which are consumed by any cleanupret or catchret exiting the pad. This change updates the signatures of those operators to require/enforce that the type produced by the pads is token type and that the rets have an appropriate argument. The catchpad argument of a `CatchReturnInst` must be a `CatchPadInst` (and similarly for `CleanupReturnInst`/`CleanupPadInst`). To accommodate that restriction, this change adds a notion of an operator constraint to both LLParser and BitcodeReader, allowing appropriate sentinels to be constructed for forward references and appropriate error messages to be emitted for illegal inputs. Also add a verifier rule (noted in LangRef) that a catchpad with a catchpad predecessor must have no other predecessors; this ensures that WinEHPrepare will see the expected linear relationship between sibling catches on the same try. Lastly, remove some superfluous/vestigial casts from instruction operand setters operating on BasicBlocks. Reviewers: rnk, majnemer Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D12108 llvm-svn: 245797 |
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.. | ||
AliasAnalysis.cpp | ||
AliasAnalysisCounter.cpp | ||
AliasAnalysisEvaluator.cpp | ||
AliasSetTracker.cpp | ||
Analysis.cpp | ||
AssumptionCache.cpp | ||
BasicAliasAnalysis.cpp | ||
BlockFrequencyInfo.cpp | ||
BlockFrequencyInfoImpl.cpp | ||
BranchProbabilityInfo.cpp | ||
CallGraph.cpp | ||
CallGraphSCCPass.cpp | ||
CallPrinter.cpp | ||
CaptureTracking.cpp | ||
CFG.cpp | ||
CFGPrinter.cpp | ||
CFLAliasAnalysis.cpp | ||
CGSCCPassManager.cpp | ||
CMakeLists.txt | ||
CodeMetrics.cpp | ||
ConstantFolding.cpp | ||
CostModel.cpp | ||
Delinearization.cpp | ||
DemandedBits.cpp | ||
DependenceAnalysis.cpp | ||
DivergenceAnalysis.cpp | ||
DominanceFrontier.cpp | ||
DomPrinter.cpp | ||
GlobalsModRef.cpp | ||
InlineCost.cpp | ||
InstCount.cpp | ||
InstructionSimplify.cpp | ||
Interval.cpp | ||
IntervalPartition.cpp | ||
IteratedDominanceFrontier.cpp | ||
IVUsers.cpp | ||
LazyCallGraph.cpp | ||
LazyValueInfo.cpp | ||
LibCallSemantics.cpp | ||
Lint.cpp | ||
LLVMBuild.txt | ||
Loads.cpp | ||
LoopAccessAnalysis.cpp | ||
LoopInfo.cpp | ||
LoopPass.cpp | ||
Makefile | ||
MemDepPrinter.cpp | ||
MemDerefPrinter.cpp | ||
MemoryBuiltins.cpp | ||
MemoryDependenceAnalysis.cpp | ||
MemoryLocation.cpp | ||
ModuleDebugInfoPrinter.cpp | ||
NoAliasAnalysis.cpp | ||
ObjCARCAliasAnalysis.cpp | ||
ObjCARCAnalysisUtils.cpp | ||
ObjCARCInstKind.cpp | ||
OrderedBasicBlock.cpp | ||
PHITransAddr.cpp | ||
PostDominators.cpp | ||
PtrUseVisitor.cpp | ||
README.txt | ||
RegionInfo.cpp | ||
RegionPass.cpp | ||
RegionPrinter.cpp | ||
ScalarEvolution.cpp | ||
ScalarEvolutionAliasAnalysis.cpp | ||
ScalarEvolutionExpander.cpp | ||
ScalarEvolutionNormalization.cpp | ||
ScopedNoAliasAA.cpp | ||
SparsePropagation.cpp | ||
StratifiedSets.h | ||
TargetLibraryInfo.cpp | ||
TargetTransformInfo.cpp | ||
Trace.cpp | ||
TypeBasedAliasAnalysis.cpp | ||
ValueTracking.cpp | ||
VectorUtils.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)) //===---------------------------------------------------------------------===//