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Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
172 lines
6.1 KiB
C++
172 lines
6.1 KiB
C++
//===- AliasAnalysisCounter.cpp - Alias Analysis Query Counter ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a pass which can be used to count how many alias queries
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// are being made and how the alias analysis implementation being used responds.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/Passes.h"
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/Pass.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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static cl::opt<bool>
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PrintAll("count-aa-print-all-queries", cl::ReallyHidden, cl::init(true));
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static cl::opt<bool>
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PrintAllFailures("count-aa-print-all-failed-queries", cl::ReallyHidden);
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namespace {
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class AliasAnalysisCounter : public ModulePass, public AliasAnalysis {
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unsigned No, May, Partial, Must;
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unsigned NoMR, JustRef, JustMod, MR;
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Module *M;
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public:
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static char ID; // Class identification, replacement for typeinfo
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AliasAnalysisCounter() : ModulePass(ID) {
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initializeAliasAnalysisCounterPass(*PassRegistry::getPassRegistry());
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No = May = Partial = Must = 0;
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NoMR = JustRef = JustMod = MR = 0;
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}
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void printLine(const char *Desc, unsigned Val, unsigned Sum) {
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errs() << " " << Val << " " << Desc << " responses ("
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<< Val*100/Sum << "%)\n";
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}
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~AliasAnalysisCounter() {
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unsigned AASum = No+May+Partial+Must;
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unsigned MRSum = NoMR+JustRef+JustMod+MR;
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if (AASum + MRSum) { // Print a report if any counted queries occurred...
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errs() << "\n===== Alias Analysis Counter Report =====\n"
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<< " Analysis counted:\n"
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<< " " << AASum << " Total Alias Queries Performed\n";
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if (AASum) {
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printLine("no alias", No, AASum);
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printLine("may alias", May, AASum);
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printLine("partial alias", Partial, AASum);
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printLine("must alias", Must, AASum);
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errs() << " Alias Analysis Counter Summary: " << No*100/AASum << "%/"
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<< May*100/AASum << "%/"
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<< Partial*100/AASum << "%/"
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<< Must*100/AASum<<"%\n\n";
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}
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errs() << " " << MRSum << " Total Mod/Ref Queries Performed\n";
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if (MRSum) {
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printLine("no mod/ref", NoMR, MRSum);
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printLine("ref", JustRef, MRSum);
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printLine("mod", JustMod, MRSum);
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printLine("mod/ref", MR, MRSum);
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errs() << " Mod/Ref Analysis Counter Summary: " <<NoMR*100/MRSum
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<< "%/" << JustRef*100/MRSum << "%/" << JustMod*100/MRSum
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<< "%/" << MR*100/MRSum <<"%\n\n";
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}
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}
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}
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bool runOnModule(Module &M) {
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this->M = &M;
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InitializeAliasAnalysis(this);
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return false;
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AliasAnalysis::getAnalysisUsage(AU);
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AU.addRequired<AliasAnalysis>();
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AU.setPreservesAll();
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}
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/// getAdjustedAnalysisPointer - This method is used when a pass implements
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/// an analysis interface through multiple inheritance. If needed, it
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/// should override this to adjust the this pointer as needed for the
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/// specified pass info.
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virtual void *getAdjustedAnalysisPointer(AnalysisID PI) {
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if (PI == &AliasAnalysis::ID)
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return (AliasAnalysis*)this;
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return this;
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}
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// FIXME: We could count these too...
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bool pointsToConstantMemory(const Location &Loc, bool OrLocal) {
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return getAnalysis<AliasAnalysis>().pointsToConstantMemory(Loc, OrLocal);
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}
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// Forwarding functions: just delegate to a real AA implementation, counting
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// the number of responses...
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AliasResult alias(const Location &LocA, const Location &LocB);
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ModRefResult getModRefInfo(ImmutableCallSite CS,
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const Location &Loc);
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ModRefResult getModRefInfo(ImmutableCallSite CS1,
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ImmutableCallSite CS2) {
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return AliasAnalysis::getModRefInfo(CS1,CS2);
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}
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};
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}
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char AliasAnalysisCounter::ID = 0;
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INITIALIZE_AG_PASS(AliasAnalysisCounter, AliasAnalysis, "count-aa",
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"Count Alias Analysis Query Responses", false, true, false)
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ModulePass *llvm::createAliasAnalysisCounterPass() {
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return new AliasAnalysisCounter();
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}
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AliasAnalysis::AliasResult
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AliasAnalysisCounter::alias(const Location &LocA, const Location &LocB) {
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AliasResult R = getAnalysis<AliasAnalysis>().alias(LocA, LocB);
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const char *AliasString = 0;
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switch (R) {
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case NoAlias: No++; AliasString = "No alias"; break;
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case MayAlias: May++; AliasString = "May alias"; break;
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case PartialAlias: Partial++; AliasString = "Partial alias"; break;
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case MustAlias: Must++; AliasString = "Must alias"; break;
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}
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if (PrintAll || (PrintAllFailures && R == MayAlias)) {
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errs() << AliasString << ":\t";
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errs() << "[" << LocA.Size << "B] ";
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WriteAsOperand(errs(), LocA.Ptr, true, M);
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errs() << ", ";
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errs() << "[" << LocB.Size << "B] ";
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WriteAsOperand(errs(), LocB.Ptr, true, M);
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errs() << "\n";
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}
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return R;
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}
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AliasAnalysis::ModRefResult
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AliasAnalysisCounter::getModRefInfo(ImmutableCallSite CS,
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const Location &Loc) {
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ModRefResult R = getAnalysis<AliasAnalysis>().getModRefInfo(CS, Loc);
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const char *MRString = 0;
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switch (R) {
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case NoModRef: NoMR++; MRString = "NoModRef"; break;
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case Ref: JustRef++; MRString = "JustRef"; break;
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case Mod: JustMod++; MRString = "JustMod"; break;
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case ModRef: MR++; MRString = "ModRef"; break;
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}
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if (PrintAll || (PrintAllFailures && R == ModRef)) {
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errs() << MRString << ": Ptr: ";
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errs() << "[" << Loc.Size << "B] ";
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WriteAsOperand(errs(), Loc.Ptr, true, M);
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errs() << "\t<->" << *CS.getInstruction() << '\n';
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}
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return R;
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}
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