bool MemDepPrinter::runOnFunction(Function &F) {
this->F = &F;
MemoryDependenceAnalysis &MDA = getAnalysis<MemoryDependenceAnalysis>();
// All this code uses non-const interfaces because MemDep is not
// const-friendly, though nothing is actually modified.
for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
Instruction *Inst = &*I;
if (!Inst->mayReadFromMemory() && !Inst->mayWriteToMemory())
continue;
MemDepResult Res = MDA.getDependency(Inst);
if (!Res.isNonLocal()) {
Deps[Inst].insert(std::make_pair(getInstTypePair(Res),
static_cast<BasicBlock *>(nullptr)));
} else if (CallSite CS = cast<Value>(Inst)) {
const MemoryDependenceAnalysis::NonLocalDepInfo &NLDI =
MDA.getNonLocalCallDependency(CS);
DepSet &InstDeps = Deps[Inst];
for (MemoryDependenceAnalysis::NonLocalDepInfo::const_iterator
I = NLDI.begin(), E = NLDI.end(); I != E; ++I) {
const MemDepResult &Res = I->getResult();
InstDeps.insert(std::make_pair(getInstTypePair(Res), I->getBB()));
}
} else {
SmallVector<NonLocalDepResult, 4> NLDI;
assert( (isa<LoadInst>(Inst) || isa<StoreInst>(Inst) ||
isa<VAArgInst>(Inst)) && "Unknown memory instruction!");
MDA.getNonLocalPointerDependency(Inst, NLDI);
DepSet &InstDeps = Deps[Inst];
for (SmallVectorImpl<NonLocalDepResult>::const_iterator
I = NLDI.begin(), E = NLDI.end(); I != E; ++I) {
const MemDepResult &Res = I->getResult();
InstDeps.insert(std::make_pair(getInstTypePair(Res), I->getBB()));
}
}
}
return false;
}
bool MemDepPrinter::runOnFunction(Function &F) {
this->F = &F;
AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
MemoryDependenceAnalysis &MDA = getAnalysis<MemoryDependenceAnalysis>();
// All this code uses non-const interfaces because MemDep is not
// const-friendly, though nothing is actually modified.
for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
Instruction *Inst = &*I;
if (!Inst->mayReadFromMemory() && !Inst->mayWriteToMemory())
continue;
MemDepResult Res = MDA.getDependency(Inst);
if (!Res.isNonLocal()) {
Deps[Inst].insert(std::make_pair(getInstTypePair(Res),
static_cast<BasicBlock *>(nullptr)));
} else if (CallSite CS = cast<Value>(Inst)) {
const MemoryDependenceAnalysis::NonLocalDepInfo &NLDI =
MDA.getNonLocalCallDependency(CS);
DepSet &InstDeps = Deps[Inst];
for (MemoryDependenceAnalysis::NonLocalDepInfo::const_iterator
I = NLDI.begin(), E = NLDI.end(); I != E; ++I) {
const MemDepResult &Res = I->getResult();
InstDeps.insert(std::make_pair(getInstTypePair(Res), I->getBB()));
}
} else {
SmallVector<NonLocalDepResult, 4> NLDI;
if (LoadInst *LI = dyn_cast<LoadInst>(Inst)) {
if (!LI->isUnordered()) {
// FIXME: Handle atomic/volatile loads.
Deps[Inst].insert(std::make_pair(getInstTypePair(nullptr, Unknown),
static_cast<BasicBlock *>(nullptr)));
continue;
}
AliasAnalysis::Location Loc = AA.getLocation(LI);
MDA.getNonLocalPointerDependency(Loc, true, LI->getParent(), NLDI);
} else if (StoreInst *SI = dyn_cast<StoreInst>(Inst)) {
if (!SI->isUnordered()) {
// FIXME: Handle atomic/volatile stores.
Deps[Inst].insert(std::make_pair(getInstTypePair(nullptr, Unknown),
static_cast<BasicBlock *>(nullptr)));
continue;
}
AliasAnalysis::Location Loc = AA.getLocation(SI);
MDA.getNonLocalPointerDependency(Loc, false, SI->getParent(), NLDI);
} else if (VAArgInst *VI = dyn_cast<VAArgInst>(Inst)) {
AliasAnalysis::Location Loc = AA.getLocation(VI);
MDA.getNonLocalPointerDependency(Loc, false, VI->getParent(), NLDI);
} else {
llvm_unreachable("Unknown memory instruction!");
}
DepSet &InstDeps = Deps[Inst];
for (SmallVectorImpl<NonLocalDepResult>::const_iterator
I = NLDI.begin(), E = NLDI.end(); I != E; ++I) {
const MemDepResult &Res = I->getResult();
InstDeps.insert(std::make_pair(getInstTypePair(Res), I->getBB()));
}
}
}
return false;
}