//
//===----------------------------------------------------------------------===//
-#include "llvm/Analysis/Passes.h"
-#include "llvm/Pass.h"
+#include "llvm/Analysis/AliasAnalysisCounter.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/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-static cl::opt<bool>
-PrintAll("count-aa-print-all-queries", cl::ReallyHidden, cl::init(true));
-static cl::opt<bool>
-PrintAllFailures("count-aa-print-all-failed-queries", cl::ReallyHidden);
-
-namespace {
- class AliasAnalysisCounter : public ModulePass, public AliasAnalysis {
- unsigned No, May, Must;
- unsigned NoMR, JustRef, JustMod, MR;
- Module *M;
- public:
- static char ID; // Class identification, replacement for typeinfo
- AliasAnalysisCounter() : ModulePass(&ID) {
- No = May = Must = 0;
- NoMR = JustRef = JustMod = MR = 0;
- }
+static cl::opt<bool> PrintAll("count-aa-print-all-queries", cl::ReallyHidden,
+ cl::init(true));
+static cl::opt<bool> PrintAllFailures("count-aa-print-all-failed-queries",
+ cl::ReallyHidden);
- void printLine(const char *Desc, unsigned Val, unsigned Sum) {
- errs() << " " << Val << " " << Desc << " responses ("
- << Val*100/Sum << "%)\n";
- }
- ~AliasAnalysisCounter() {
- unsigned AASum = No+May+Must;
- unsigned MRSum = NoMR+JustRef+JustMod+MR;
- if (AASum + MRSum) { // Print a report if any counted queries occurred...
- 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("must alias", Must, AASum);
- errs() << " Alias Analysis Counter Summary: " << No*100/AASum << "%/"
- << May*100/AASum << "%/" << Must*100/AASum<<"%\n\n";
- }
-
- errs() << " " << MRSum << " Total Mod/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);
- errs() << " Mod/Ref Analysis Counter Summary: " <<NoMR*100/MRSum
- << "%/" << JustRef*100/MRSum << "%/" << JustMod*100/MRSum
- << "%/" << MR*100/MRSum <<"%\n\n";
- }
- }
- }
+char AliasAnalysisCounter::ID = 0;
+INITIALIZE_AG_PASS(AliasAnalysisCounter, AliasAnalysis, "count-aa",
+ "Count Alias Analysis Query Responses", false, true, false)
- bool runOnModule(Module &M) {
- this->M = &M;
- InitializeAliasAnalysis(this);
- return false;
- }
+ModulePass *llvm::createAliasAnalysisCounterPass() {
+ return new AliasAnalysisCounter();
+}
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AliasAnalysis::getAnalysisUsage(AU);
- AU.addRequired<AliasAnalysis>();
- AU.setPreservesAll();
- }
+AliasAnalysisCounter::AliasAnalysisCounter() : ModulePass(ID) {
+ initializeAliasAnalysisCounterPass(*PassRegistry::getPassRegistry());
+ No = May = Partial = Must = 0;
+ NoMR = JustRef = JustMod = MR = 0;
+}
- /// 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.
- virtual void *getAdjustedAnalysisPointer(const PassInfo *PI) {
- if (PI->isPassID(&AliasAnalysis::ID))
- return (AliasAnalysis*)this;
- return this;
- }
-
- // FIXME: We could count these too...
- bool pointsToConstantMemory(const Value *P) {
- return getAnalysis<AliasAnalysis>().pointsToConstantMemory(P);
- }
+static void printLine(const char *Desc, unsigned Val, unsigned Sum) {
+ errs() << " " << Val << " " << Desc << " responses (" << Val * 100 / Sum
+ << "%)\n";
+}
- // 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);
+AliasAnalysisCounter::~AliasAnalysisCounter() {
+ unsigned AASum = No + May + Partial + Must;
+ unsigned MRSum = NoMR + JustRef + JustMod + MR;
+ if (AASum + MRSum) { // Print a report if any counted queries occurred...
+ 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);
+ errs() << " Alias Analysis Counter Summary: " << No * 100 / AASum << "%/"
+ << May * 100 / AASum << "%/" << Partial * 100 / AASum << "%/"
+ << Must * 100 / AASum << "%\n\n";
+ }
- ModRefResult getModRefInfo(CallSite CS, Value *P, unsigned Size);
- ModRefResult getModRefInfo(CallSite CS1, CallSite CS2) {
- return AliasAnalysis::getModRefInfo(CS1,CS2);
+ 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);
+ errs() << " MRI_Mod/MRI_Ref Analysis Counter Summary: "
+ << NoMR * 100 / MRSum << "%/" << JustRef * 100 / MRSum << "%/"
+ << JustMod * 100 / MRSum << "%/" << MR * 100 / MRSum << "%\n\n";
}
- };
+ }
}
-char AliasAnalysisCounter::ID = 0;
-static RegisterPass<AliasAnalysisCounter>
-X("count-aa", "Count Alias Analysis Query Responses", false, true);
-static RegisterAnalysisGroup<AliasAnalysis> Y(X);
+bool AliasAnalysisCounter::runOnModule(Module &M) {
+ this->M = &M;
+ InitializeAliasAnalysis(this, &M.getDataLayout());
+ return false;
+}
-ModulePass *llvm::createAliasAnalysisCounterPass() {
- return new AliasAnalysisCounter();
+void AliasAnalysisCounter::getAnalysisUsage(AnalysisUsage &AU) const {
+ AliasAnalysis::getAnalysisUsage(AU);
+ AU.addRequired<AliasAnalysis>();
+ AU.setPreservesAll();
+}
+
+void *AliasAnalysisCounter::getAdjustedAnalysisPointer(AnalysisID PI) {
+ if (PI == &AliasAnalysis::ID)
+ return (AliasAnalysis *)this;
+ return this;
}
-AliasAnalysis::AliasResult
-AliasAnalysisCounter::alias(const Value *V1, unsigned V1Size,
- const Value *V2, unsigned V2Size) {
- AliasResult R = getAnalysis<AliasAnalysis>().alias(V1, V1Size, V2, V2Size);
+AliasResult AliasAnalysisCounter::alias(const MemoryLocation &LocA,
+ const MemoryLocation &LocB) {
+ AliasResult R = getAnalysis<AliasAnalysis>().alias(LocA, LocB);
- const char *AliasString;
+ const char *AliasString = nullptr;
switch (R) {
- default: llvm_unreachable("Unknown alias type!");
- case NoAlias: No++; AliasString = "No alias"; break;
- case MayAlias: May++; AliasString = "May alias"; break;
- case MustAlias: Must++; AliasString = "Must alias"; break;
+ 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)) {
errs() << AliasString << ":\t";
- errs() << "[" << V1Size << "B] ";
- WriteAsOperand(errs(), V1, true, M);
+ errs() << "[" << LocA.Size << "B] ";
+ LocA.Ptr->printAsOperand(errs(), true, M);
errs() << ", ";
- errs() << "[" << V2Size << "B] ";
- WriteAsOperand(errs(), V2, true, M);
+ 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<AliasAnalysis>().getModRefInfo(CS, P, Size);
+ModRefInfo AliasAnalysisCounter::getModRefInfo(ImmutableCallSite CS,
+ const MemoryLocation &Loc) {
+ ModRefInfo R = getAnalysis<AliasAnalysis>().getModRefInfo(CS, Loc);
- const char *MRString;
+ const char *MRString = nullptr;
switch (R) {
- default: llvm_unreachable("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)) {
+ if (PrintAll || (PrintAllFailures && R == MRI_ModRef)) {
errs() << MRString << ": Ptr: ";
- errs() << "[" << Size << "B] ";
- WriteAsOperand(errs(), P, true, M);
+ errs() << "[" << Loc.Size << "B] ";
+ Loc.Ptr->printAsOperand(errs(), true, M);
errs() << "\t<->" << *CS.getInstruction() << '\n';
}
return R;
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