mirror of
https://github.com/c64scene-ar/llvm-6502.git
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into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
193 lines
6.4 KiB
C++
193 lines
6.4 KiB
C++
//===- MemDepPrinter.cpp - Printer for MemoryDependenceAnalysis -----------===//
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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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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/Passes.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/Analysis/MemoryDependenceAnalysis.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/Support/CallSite.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/InstIterator.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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struct MemDepPrinter : public FunctionPass {
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const Function *F;
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enum DepType {
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Clobber = 0,
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Def,
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NonFuncLocal,
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Unknown
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};
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static const char *const DepTypeStr[];
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typedef PointerIntPair<const Instruction *, 2, DepType> InstTypePair;
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typedef std::pair<InstTypePair, const BasicBlock *> Dep;
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typedef SmallSetVector<Dep, 4> DepSet;
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typedef DenseMap<const Instruction *, DepSet> DepSetMap;
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DepSetMap Deps;
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static char ID; // Pass identifcation, replacement for typeid
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MemDepPrinter() : FunctionPass(ID) {
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initializeMemDepPrinterPass(*PassRegistry::getPassRegistry());
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}
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virtual bool runOnFunction(Function &F);
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void print(raw_ostream &OS, const Module * = 0) const;
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredTransitive<AliasAnalysis>();
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AU.addRequiredTransitive<MemoryDependenceAnalysis>();
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AU.setPreservesAll();
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}
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virtual void releaseMemory() {
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Deps.clear();
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F = 0;
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}
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private:
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static InstTypePair getInstTypePair(MemDepResult dep) {
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if (dep.isClobber())
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return InstTypePair(dep.getInst(), Clobber);
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if (dep.isDef())
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return InstTypePair(dep.getInst(), Def);
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if (dep.isNonFuncLocal())
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return InstTypePair(dep.getInst(), NonFuncLocal);
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assert(dep.isUnknown() && "unexptected dependence type");
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return InstTypePair(dep.getInst(), Unknown);
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}
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static InstTypePair getInstTypePair(const Instruction* inst, DepType type) {
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return InstTypePair(inst, type);
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}
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};
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}
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char MemDepPrinter::ID = 0;
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INITIALIZE_PASS_BEGIN(MemDepPrinter, "print-memdeps",
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"Print MemDeps of function", false, true)
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INITIALIZE_PASS_DEPENDENCY(MemoryDependenceAnalysis)
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INITIALIZE_PASS_END(MemDepPrinter, "print-memdeps",
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"Print MemDeps of function", false, true)
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FunctionPass *llvm::createMemDepPrinter() {
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return new MemDepPrinter();
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}
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const char *const MemDepPrinter::DepTypeStr[]
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= {"Clobber", "Def", "NonFuncLocal", "Unknown"};
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bool MemDepPrinter::runOnFunction(Function &F) {
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this->F = &F;
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AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
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MemoryDependenceAnalysis &MDA = getAnalysis<MemoryDependenceAnalysis>();
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// All this code uses non-const interfaces because MemDep is not
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// const-friendly, though nothing is actually modified.
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for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
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Instruction *Inst = &*I;
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if (!Inst->mayReadFromMemory() && !Inst->mayWriteToMemory())
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continue;
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MemDepResult Res = MDA.getDependency(Inst);
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if (!Res.isNonLocal()) {
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Deps[Inst].insert(std::make_pair(getInstTypePair(Res),
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static_cast<BasicBlock *>(0)));
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} else if (CallSite CS = cast<Value>(Inst)) {
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const MemoryDependenceAnalysis::NonLocalDepInfo &NLDI =
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MDA.getNonLocalCallDependency(CS);
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DepSet &InstDeps = Deps[Inst];
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for (MemoryDependenceAnalysis::NonLocalDepInfo::const_iterator
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I = NLDI.begin(), E = NLDI.end(); I != E; ++I) {
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const MemDepResult &Res = I->getResult();
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InstDeps.insert(std::make_pair(getInstTypePair(Res), I->getBB()));
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}
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} else {
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SmallVector<NonLocalDepResult, 4> NLDI;
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if (LoadInst *LI = dyn_cast<LoadInst>(Inst)) {
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if (!LI->isUnordered()) {
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// FIXME: Handle atomic/volatile loads.
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Deps[Inst].insert(std::make_pair(getInstTypePair(0, Unknown),
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static_cast<BasicBlock *>(0)));
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continue;
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}
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AliasAnalysis::Location Loc = AA.getLocation(LI);
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MDA.getNonLocalPointerDependency(Loc, true, LI->getParent(), NLDI);
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} else if (StoreInst *SI = dyn_cast<StoreInst>(Inst)) {
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if (!SI->isUnordered()) {
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// FIXME: Handle atomic/volatile stores.
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Deps[Inst].insert(std::make_pair(getInstTypePair(0, Unknown),
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static_cast<BasicBlock *>(0)));
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continue;
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}
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AliasAnalysis::Location Loc = AA.getLocation(SI);
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MDA.getNonLocalPointerDependency(Loc, false, SI->getParent(), NLDI);
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} else if (VAArgInst *VI = dyn_cast<VAArgInst>(Inst)) {
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AliasAnalysis::Location Loc = AA.getLocation(VI);
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MDA.getNonLocalPointerDependency(Loc, false, VI->getParent(), NLDI);
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} else {
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llvm_unreachable("Unknown memory instruction!");
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}
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DepSet &InstDeps = Deps[Inst];
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for (SmallVectorImpl<NonLocalDepResult>::const_iterator
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I = NLDI.begin(), E = NLDI.end(); I != E; ++I) {
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const MemDepResult &Res = I->getResult();
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InstDeps.insert(std::make_pair(getInstTypePair(Res), I->getBB()));
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}
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}
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}
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return false;
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}
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void MemDepPrinter::print(raw_ostream &OS, const Module *M) const {
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for (const_inst_iterator I = inst_begin(*F), E = inst_end(*F); I != E; ++I) {
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const Instruction *Inst = &*I;
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DepSetMap::const_iterator DI = Deps.find(Inst);
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if (DI == Deps.end())
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continue;
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const DepSet &InstDeps = DI->second;
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for (DepSet::const_iterator I = InstDeps.begin(), E = InstDeps.end();
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I != E; ++I) {
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const Instruction *DepInst = I->first.getPointer();
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DepType type = I->first.getInt();
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const BasicBlock *DepBB = I->second;
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OS << " ";
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OS << DepTypeStr[type];
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if (DepBB) {
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OS << " in block ";
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WriteAsOperand(OS, DepBB, /*PrintType=*/false, M);
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}
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if (DepInst) {
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OS << " from: ";
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DepInst->print(OS);
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}
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OS << "\n";
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}
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Inst->print(OS);
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OS << "\n\n";
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}
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}
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