X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FAnalysis%2FAliasAnalysisEvaluator.cpp;h=fe4bd4cc21099c0280824115be33a927c92d30ea;hb=92602ea18e3d3b1fb6b780a2aa0301004f2c7285;hp=ddf8b192c73d24116e0017a26d9e383ab3acbd49;hpb=1db839e73471a40309c2c10873b67c3b5b1b7a7b;p=oota-llvm.git diff --git a/lib/Analysis/AliasAnalysisEvaluator.cpp b/lib/Analysis/AliasAnalysisEvaluator.cpp index ddf8b192c73..fe4bd4cc210 100644 --- a/lib/Analysis/AliasAnalysisEvaluator.cpp +++ b/lib/Analysis/AliasAnalysisEvaluator.cpp @@ -17,25 +17,25 @@ // //===----------------------------------------------------------------------===// -#include "llvm/Constants.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Function.h" -#include "llvm/Instructions.h" -#include "llvm/Pass.h" #include "llvm/Analysis/Passes.h" +#include "llvm/ADT/SetVector.h" #include "llvm/Analysis/AliasAnalysis.h" -#include "llvm/Assembly/Writer.h" -#include "llvm/Support/Debug.h" -#include "llvm/Support/InstIterator.h" +#include "llvm/IR/Constants.h" +#include "llvm/IR/DerivedTypes.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/InstIterator.h" +#include "llvm/IR/Instructions.h" +#include "llvm/Pass.h" #include "llvm/Support/CommandLine.h" +#include "llvm/Support/Debug.h" #include "llvm/Support/raw_ostream.h" -#include "llvm/ADT/SetVector.h" using namespace llvm; static cl::opt PrintAll("print-all-alias-modref-info", cl::ReallyHidden); static cl::opt PrintNoAlias("print-no-aliases", cl::ReallyHidden); static cl::opt PrintMayAlias("print-may-aliases", cl::ReallyHidden); +static cl::opt PrintPartialAlias("print-partial-aliases", cl::ReallyHidden); static cl::opt PrintMustAlias("print-must-aliases", cl::ReallyHidden); static cl::opt PrintNoModRef("print-no-modref", cl::ReallyHidden); @@ -43,9 +43,11 @@ static cl::opt PrintMod("print-mod", cl::ReallyHidden); static cl::opt PrintRef("print-ref", cl::ReallyHidden); static cl::opt PrintModRef("print-modref", cl::ReallyHidden); +static cl::opt EvalAAMD("evaluate-aa-metadata", cl::ReallyHidden); + namespace { class AAEval : public FunctionPass { - unsigned NoAlias, MayAlias, MustAlias; + unsigned NoAlias, MayAlias, PartialAlias, MustAlias; unsigned NoModRef, Mod, Ref, ModRef; public: @@ -54,24 +56,25 @@ namespace { initializeAAEvalPass(*PassRegistry::getPassRegistry()); } - virtual void getAnalysisUsage(AnalysisUsage &AU) const { + void getAnalysisUsage(AnalysisUsage &AU) const override { AU.addRequired(); AU.setPreservesAll(); } - bool doInitialization(Module &M) { - NoAlias = MayAlias = MustAlias = 0; + bool doInitialization(Module &M) override { + NoAlias = MayAlias = PartialAlias = MustAlias = 0; NoModRef = Mod = Ref = ModRef = 0; if (PrintAll) { - PrintNoAlias = PrintMayAlias = PrintMustAlias = true; + PrintNoAlias = PrintMayAlias = true; + PrintPartialAlias = PrintMustAlias = true; PrintNoModRef = PrintMod = PrintRef = PrintModRef = true; } return false; } - bool runOnFunction(Function &F); - bool doFinalization(Module &M); + bool runOnFunction(Function &F) override; + bool doFinalization(Module &M) override; }; } @@ -90,8 +93,8 @@ static void PrintResults(const char *Msg, bool P, const Value *V1, std::string o1, o2; { raw_string_ostream os1(o1), os2(o2); - WriteAsOperand(os1, V1, true, M); - WriteAsOperand(os2, V2, true, M); + V1->printAsOperand(os1, true, M); + V2->printAsOperand(os2, true, M); } if (o2 < o1) @@ -107,7 +110,7 @@ PrintModRefResults(const char *Msg, bool P, Instruction *I, Value *Ptr, Module *M) { if (P) { errs() << " " << Msg << ": Ptr: "; - WriteAsOperand(errs(), Ptr, true, M); + Ptr->printAsOperand(errs(), true, M); errs() << "\t<->" << *I << '\n'; } } @@ -121,6 +124,15 @@ PrintModRefResults(const char *Msg, bool P, CallSite CSA, CallSite CSB, } } +static inline void +PrintLoadStoreResults(const char *Msg, bool P, const Value *V1, + const Value *V2, const Module *M) { + if (P) { + errs() << " " << Msg << ": " << *V1 + << " <-> " << *V2 << '\n'; + } +} + static inline bool isInterestingPointer(Value *V) { return V->getType()->isPointerTy() && !isa(V); @@ -131,6 +143,8 @@ bool AAEval::runOnFunction(Function &F) { SetVector Pointers; SetVector CallSites; + SetVector Loads; + SetVector Stores; for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I) if (I->getType()->isPointerTy()) // Add all pointer arguments. @@ -139,6 +153,10 @@ bool AAEval::runOnFunction(Function &F) { for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) { if (I->getType()->isPointerTy()) // Add all pointer instructions. Pointers.insert(&*I); + if (EvalAAMD && isa(&*I)) + Loads.insert(&*I); + if (EvalAAMD && isa(&*I)) + Stores.insert(&*I); Instruction &Inst = *I; if (CallSite CS = cast(&Inst)) { Value *Callee = CS.getCalledValue(); @@ -160,7 +178,7 @@ bool AAEval::runOnFunction(Function &F) { } } - if (PrintNoAlias || PrintMayAlias || PrintMustAlias || + if (PrintNoAlias || PrintMayAlias || PrintPartialAlias || PrintMustAlias || PrintNoModRef || PrintMod || PrintRef || PrintModRef) errs() << "Function: " << F.getName() << ": " << Pointers.size() << " pointers, " << CallSites.size() << " call sites\n"; @@ -168,13 +186,13 @@ bool AAEval::runOnFunction(Function &F) { // iterate over the worklist, and run the full (n^2)/2 disambiguations for (SetVector::iterator I1 = Pointers.begin(), E = Pointers.end(); I1 != E; ++I1) { - unsigned I1Size = AliasAnalysis::UnknownSize; - const Type *I1ElTy = cast((*I1)->getType())->getElementType(); + uint64_t I1Size = AliasAnalysis::UnknownSize; + Type *I1ElTy = cast((*I1)->getType())->getElementType(); if (I1ElTy->isSized()) I1Size = AA.getTypeStoreSize(I1ElTy); for (SetVector::iterator I2 = Pointers.begin(); I2 != I1; ++I2) { - unsigned I2Size = AliasAnalysis::UnknownSize; - const Type *I2ElTy =cast((*I2)->getType())->getElementType(); + uint64_t I2Size = AliasAnalysis::UnknownSize; + Type *I2ElTy =cast((*I2)->getType())->getElementType(); if (I2ElTy->isSized()) I2Size = AA.getTypeStoreSize(I2ElTy); switch (AA.alias(*I1, I1Size, *I2, I2Size)) { @@ -184,11 +202,68 @@ bool AAEval::runOnFunction(Function &F) { case AliasAnalysis::MayAlias: PrintResults("MayAlias", PrintMayAlias, *I1, *I2, F.getParent()); ++MayAlias; break; + case AliasAnalysis::PartialAlias: + PrintResults("PartialAlias", PrintPartialAlias, *I1, *I2, + F.getParent()); + ++PartialAlias; break; case AliasAnalysis::MustAlias: PrintResults("MustAlias", PrintMustAlias, *I1, *I2, F.getParent()); ++MustAlias; break; - default: - errs() << "Unknown alias query result!\n"; + } + } + } + + if (EvalAAMD) { + // iterate over all pairs of load, store + for (SetVector::iterator I1 = Loads.begin(), E = Loads.end(); + I1 != E; ++I1) { + for (SetVector::iterator I2 = Stores.begin(), E2 = Stores.end(); + I2 != E2; ++I2) { + switch (AA.alias(AA.getLocation(cast(*I1)), + AA.getLocation(cast(*I2)))) { + case AliasAnalysis::NoAlias: + PrintLoadStoreResults("NoAlias", PrintNoAlias, *I1, *I2, + F.getParent()); + ++NoAlias; break; + case AliasAnalysis::MayAlias: + PrintLoadStoreResults("MayAlias", PrintMayAlias, *I1, *I2, + F.getParent()); + ++MayAlias; break; + case AliasAnalysis::PartialAlias: + PrintLoadStoreResults("PartialAlias", PrintPartialAlias, *I1, *I2, + F.getParent()); + ++PartialAlias; break; + case AliasAnalysis::MustAlias: + PrintLoadStoreResults("MustAlias", PrintMustAlias, *I1, *I2, + F.getParent()); + ++MustAlias; break; + } + } + } + + // iterate over all pairs of store, store + for (SetVector::iterator I1 = Stores.begin(), E = Stores.end(); + I1 != E; ++I1) { + for (SetVector::iterator I2 = Stores.begin(); I2 != I1; ++I2) { + switch (AA.alias(AA.getLocation(cast(*I1)), + AA.getLocation(cast(*I2)))) { + case AliasAnalysis::NoAlias: + PrintLoadStoreResults("NoAlias", PrintNoAlias, *I1, *I2, + F.getParent()); + ++NoAlias; break; + case AliasAnalysis::MayAlias: + PrintLoadStoreResults("MayAlias", PrintMayAlias, *I1, *I2, + F.getParent()); + ++MayAlias; break; + case AliasAnalysis::PartialAlias: + PrintLoadStoreResults("PartialAlias", PrintPartialAlias, *I1, *I2, + F.getParent()); + ++PartialAlias; break; + case AliasAnalysis::MustAlias: + PrintLoadStoreResults("MustAlias", PrintMustAlias, *I1, *I2, + F.getParent()); + ++MustAlias; break; + } } } } @@ -200,8 +275,8 @@ bool AAEval::runOnFunction(Function &F) { for (SetVector::iterator V = Pointers.begin(), Ve = Pointers.end(); V != Ve; ++V) { - unsigned Size = AliasAnalysis::UnknownSize; - const Type *ElTy = cast((*V)->getType())->getElementType(); + uint64_t Size = AliasAnalysis::UnknownSize; + Type *ElTy = cast((*V)->getType())->getElementType(); if (ElTy->isSized()) Size = AA.getTypeStoreSize(ElTy); switch (AA.getModRefInfo(*C, *V, Size)) { @@ -217,8 +292,6 @@ bool AAEval::runOnFunction(Function &F) { case AliasAnalysis::ModRef: PrintModRefResults("Both ModRef", PrintModRef, I, *V, F.getParent()); ++ModRef; break; - default: - errs() << "Unknown alias query result!\n"; } } } @@ -255,7 +328,7 @@ static void PrintPercent(unsigned Num, unsigned Sum) { } bool AAEval::doFinalization(Module &M) { - unsigned AliasSum = NoAlias + MayAlias + MustAlias; + unsigned AliasSum = NoAlias + MayAlias + PartialAlias + MustAlias; errs() << "===== Alias Analysis Evaluator Report =====\n"; if (AliasSum == 0) { errs() << " Alias Analysis Evaluator Summary: No pointers!\n"; @@ -265,10 +338,13 @@ bool AAEval::doFinalization(Module &M) { PrintPercent(NoAlias, AliasSum); errs() << " " << MayAlias << " may alias responses "; PrintPercent(MayAlias, AliasSum); + errs() << " " << PartialAlias << " partial alias responses "; + PrintPercent(PartialAlias, AliasSum); errs() << " " << MustAlias << " must alias responses "; PrintPercent(MustAlias, AliasSum); errs() << " Alias Analysis Evaluator Pointer Alias Summary: " << NoAlias*100/AliasSum << "%/" << MayAlias*100/AliasSum << "%/" + << PartialAlias*100/AliasSum << "%/" << MustAlias*100/AliasSum << "%\n"; }