X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FAnalysis%2FAliasAnalysisCounter.cpp;h=6c53b41d3a10040ff45625b4b38f3feee4d8773e;hb=52ab0bc417c5a1dc47e07c91aed323143bc1057d;hp=df3a66c660670c7fe11ce61c090d300f4ccee9bc;hpb=c7fe32e840758baa9ce4f93c321b508a69b98262;p=oota-llvm.git diff --git a/lib/Analysis/AliasAnalysisCounter.cpp b/lib/Analysis/AliasAnalysisCounter.cpp index df3a66c6606..6c53b41d3a1 100644 --- a/lib/Analysis/AliasAnalysisCounter.cpp +++ b/lib/Analysis/AliasAnalysisCounter.cpp @@ -13,159 +13,173 @@ //===----------------------------------------------------------------------===// #include "llvm/Analysis/Passes.h" -#include "llvm/Pass.h" #include "llvm/Analysis/AliasAnalysis.h" -#include "llvm/Assembly/Writer.h" +#include "llvm/IR/Module.h" +#include "llvm/Pass.h" #include "llvm/Support/CommandLine.h" -#include "llvm/Support/Compiler.h" -#include "llvm/Support/Streams.h" +#include "llvm/Support/Debug.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/raw_ostream.h" using namespace llvm; +static cl::opt +PrintAll("count-aa-print-all-queries", cl::ReallyHidden, cl::init(true)); +static cl::opt +PrintAllFailures("count-aa-print-all-failed-queries", cl::ReallyHidden); + namespace { - cl::opt - PrintAll("count-aa-print-all-queries", cl::ReallyHidden); - cl::opt - PrintAllFailures("count-aa-print-all-failed-queries", cl::ReallyHidden); - - class VISIBILITY_HIDDEN AliasAnalysisCounter - : public ModulePass, public AliasAnalysis { - unsigned No, May, Must; + class AliasAnalysisCounter : public ModulePass, public AliasAnalysis { + unsigned No, May, Partial, Must; unsigned NoMR, JustRef, JustMod, MR; - const char *Name; Module *M; public: static char ID; // Class identification, replacement for typeinfo - AliasAnalysisCounter() : ModulePass((intptr_t) &ID, true) { - No = May = Must = 0; + AliasAnalysisCounter() : ModulePass(ID) { + initializeAliasAnalysisCounterPass(*PassRegistry::getPassRegistry()); + No = May = Partial = Must = 0; NoMR = JustRef = JustMod = MR = 0; } void printLine(const char *Desc, unsigned Val, unsigned Sum) { - cerr << " " << Val << " " << Desc << " responses (" - << Val*100/Sum << "%)\n"; + errs() << " " << Val << " " << Desc << " responses (" + << Val*100/Sum << "%)\n"; } - ~AliasAnalysisCounter() { - unsigned AASum = No+May+Must; + ~AliasAnalysisCounter() override { + unsigned AASum = No+May+Partial+Must; unsigned MRSum = NoMR+JustRef+JustMod+MR; if (AASum + MRSum) { // Print a report if any counted queries occurred... - cerr << "\n===== Alias Analysis Counter Report =====\n" - << " Analysis counted: " << Name << "\n" - << " " << AASum << " Total Alias Queries Performed\n"; + errs() << "\n===== Alias Analysis Counter Report =====\n" + << " Analysis counted:\n" + << " " << AASum << " Total Alias Queries Performed\n"; if (AASum) { printLine("no alias", No, AASum); printLine("may alias", May, AASum); + printLine("partial alias", Partial, AASum); printLine("must alias", Must, AASum); - cerr << " Alias Analysis Counter Summary: " << No*100/AASum << "%/" - << May*100/AASum << "%/" << Must*100/AASum<<"%\n\n"; + errs() << " Alias Analysis Counter Summary: " << No*100/AASum << "%/" + << May*100/AASum << "%/" + << Partial*100/AASum << "%/" + << Must*100/AASum<<"%\n\n"; } - cerr << " " << MRSum << " Total Mod/Ref Queries Performed\n"; + errs() << " " << MRSum << " Total MRI_Mod/MRI_Ref Queries Performed\n"; if (MRSum) { printLine("no mod/ref", NoMR, MRSum); printLine("ref", JustRef, MRSum); printLine("mod", JustMod, MRSum); printLine("mod/ref", MR, MRSum); - cerr << " Mod/Ref Analysis Counter Summary: " <M = &M; - InitializeAliasAnalysis(this); - Name = dynamic_cast(&getAnalysis())->getPassName(); + InitializeAliasAnalysis(this, &M.getDataLayout()); return false; } - virtual void getAnalysisUsage(AnalysisUsage &AU) const { + void getAnalysisUsage(AnalysisUsage &AU) const override { AliasAnalysis::getAnalysisUsage(AU); AU.addRequired(); AU.setPreservesAll(); } - // FIXME: We could count these too... - bool pointsToConstantMemory(const Value *P) { - return getAnalysis().pointsToConstantMemory(P); - } - bool doesNotAccessMemory(CallSite CS) { - return getAnalysis().doesNotAccessMemory(CS); - } - bool doesNotAccessMemory(Function *F) { - return getAnalysis().doesNotAccessMemory(F); + /// getAdjustedAnalysisPointer - This method is used when a pass implements + /// an analysis interface through multiple inheritance. If needed, it + /// should override this to adjust the this pointer as needed for the + /// specified pass info. + void *getAdjustedAnalysisPointer(AnalysisID PI) override { + if (PI == &AliasAnalysis::ID) + return (AliasAnalysis*)this; + return this; } - bool onlyReadsMemory(CallSite CS) { - return getAnalysis().onlyReadsMemory(CS); - } - bool onlyReadsMemory(Function *F) { - return getAnalysis().onlyReadsMemory(F); + + // FIXME: We could count these too... + bool pointsToConstantMemory(const MemoryLocation &Loc, + bool OrLocal) override { + return getAnalysis().pointsToConstantMemory(Loc, OrLocal); } - // Forwarding functions: just delegate to a real AA implementation, counting // the number of responses... - AliasResult alias(const Value *V1, unsigned V1Size, - const Value *V2, unsigned V2Size); + AliasResult alias(const MemoryLocation &LocA, + const MemoryLocation &LocB) override; - ModRefResult getModRefInfo(CallSite CS, Value *P, unsigned Size); - ModRefResult getModRefInfo(CallSite CS1, CallSite CS2) { + ModRefInfo getModRefInfo(ImmutableCallSite CS, + const MemoryLocation &Loc) override; + ModRefInfo getModRefInfo(ImmutableCallSite CS1, + ImmutableCallSite CS2) override { return AliasAnalysis::getModRefInfo(CS1,CS2); } }; - - char AliasAnalysisCounter::ID = 0; - RegisterPass - X("count-aa", "Count Alias Analysis Query Responses"); - RegisterAnalysisGroup Y(X); } +char AliasAnalysisCounter::ID = 0; +INITIALIZE_AG_PASS(AliasAnalysisCounter, AliasAnalysis, "count-aa", + "Count Alias Analysis Query Responses", false, true, false) + ModulePass *llvm::createAliasAnalysisCounterPass() { return new AliasAnalysisCounter(); } -AliasAnalysis::AliasResult -AliasAnalysisCounter::alias(const Value *V1, unsigned V1Size, - const Value *V2, unsigned V2Size) { - AliasResult R = getAnalysis().alias(V1, V1Size, V2, V2Size); +AliasResult AliasAnalysisCounter::alias(const MemoryLocation &LocA, + const MemoryLocation &LocB) { + AliasResult R = getAnalysis().alias(LocA, LocB); - const char *AliasString; + const char *AliasString = nullptr; switch (R) { - default: assert(0 && "Unknown alias type!"); case NoAlias: No++; AliasString = "No alias"; break; case MayAlias: May++; AliasString = "May alias"; break; + case PartialAlias: Partial++; AliasString = "Partial alias"; break; case MustAlias: Must++; AliasString = "Must alias"; break; } if (PrintAll || (PrintAllFailures && R == MayAlias)) { - cerr << AliasString << ":\t"; - cerr << "[" << V1Size << "B] "; - WriteAsOperand(*cerr.stream(), V1, true, M) << ", "; - cerr << "[" << V2Size << "B] "; - WriteAsOperand(*cerr.stream(), V2, true, M) << "\n"; + errs() << AliasString << ":\t"; + errs() << "[" << LocA.Size << "B] "; + LocA.Ptr->printAsOperand(errs(), true, M); + errs() << ", "; + errs() << "[" << LocB.Size << "B] "; + LocB.Ptr->printAsOperand(errs(), true, M); + errs() << "\n"; } return R; } -AliasAnalysis::ModRefResult -AliasAnalysisCounter::getModRefInfo(CallSite CS, Value *P, unsigned Size) { - ModRefResult R = getAnalysis().getModRefInfo(CS, P, Size); +ModRefInfo AliasAnalysisCounter::getModRefInfo(ImmutableCallSite CS, + const MemoryLocation &Loc) { + ModRefInfo R = getAnalysis().getModRefInfo(CS, Loc); - const char *MRString; + const char *MRString = nullptr; switch (R) { - default: assert(0 && "Unknown mod/ref type!"); - case NoModRef: NoMR++; MRString = "NoModRef"; break; - case Ref: JustRef++; MRString = "JustRef"; break; - case Mod: JustMod++; MRString = "JustMod"; break; - case ModRef: MR++; MRString = "ModRef"; break; + case MRI_NoModRef: + NoMR++; + MRString = "MRI_NoModRef"; + break; + case MRI_Ref: + JustRef++; + MRString = "JustRef"; + break; + case MRI_Mod: + JustMod++; + MRString = "JustMod"; + break; + case MRI_ModRef: + MR++; + MRString = "MRI_ModRef"; + break; } - if (PrintAll || (PrintAllFailures && R == ModRef)) { - cerr << MRString << ": Ptr: "; - cerr << "[" << Size << "B] "; - WriteAsOperand(*cerr.stream(), P, true, M); - cerr << "\t<->" << *CS.getInstruction(); + if (PrintAll || (PrintAllFailures && R == MRI_ModRef)) { + errs() << MRString << ": Ptr: "; + errs() << "[" << Loc.Size << "B] "; + Loc.Ptr->printAsOperand(errs(), true, M); + errs() << "\t<->" << *CS.getInstruction() << '\n'; } return R; }