void TypeFinder::run(const Module &M, bool onlyNamed) {
OnlyNamed = onlyNamed;
// Get types from global variables.
for (Module::const_global_iterator I = M.global_begin(),
E = M.global_end(); I != E; ++I) {
incorporateType(I->getType());
if (I->hasInitializer())
incorporateValue(I->getInitializer());
}
// Get types from aliases.
for (Module::const_alias_iterator I = M.alias_begin(),
E = M.alias_end(); I != E; ++I) {
incorporateType(I->getType());
if (const Value *Aliasee = I->getAliasee())
incorporateValue(Aliasee);
}
// Get types from functions.
SmallVector<std::pair<unsigned, MDNode *>, 4> MDForInst;
for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) {
incorporateType(FI->getType());
if (FI->hasPrefixData())
incorporateValue(FI->getPrefixData());
if (FI->hasPrologueData())
incorporateValue(FI->getPrologueData());
if (FI->hasPersonalityFn())
incorporateValue(FI->getPersonalityFn());
// First incorporate the arguments.
for (Function::const_arg_iterator AI = FI->arg_begin(),
AE = FI->arg_end(); AI != AE; ++AI)
incorporateValue(AI);
for (Function::const_iterator BB = FI->begin(), E = FI->end();
BB != E; ++BB)
for (BasicBlock::const_iterator II = BB->begin(),
E = BB->end(); II != E; ++II) {
const Instruction &I = *II;
// Incorporate the type of the instruction.
incorporateType(I.getType());
// Incorporate non-instruction operand types. (We are incorporating all
// instructions with this loop.)
for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end();
OI != OE; ++OI)
if (*OI && !isa<Instruction>(OI))
incorporateValue(*OI);
// Incorporate types hiding in metadata.
I.getAllMetadataOtherThanDebugLoc(MDForInst);
for (unsigned i = 0, e = MDForInst.size(); i != e; ++i)
incorporateMDNode(MDForInst[i].second);
MDForInst.clear();
}
}
for (Module::const_named_metadata_iterator I = M.named_metadata_begin(),
E = M.named_metadata_end(); I != E; ++I) {
const NamedMDNode *NMD = I;
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i)
incorporateMDNode(NMD->getOperand(i));
}
}
ValueEnumerator::ValueEnumerator(const Module &M,
bool ShouldPreserveUseListOrder)
: HasMDString(false), HasDILocation(false), HasGenericDINode(false),
ShouldPreserveUseListOrder(ShouldPreserveUseListOrder) {
if (ShouldPreserveUseListOrder)
UseListOrders = predictUseListOrder(M);
// Enumerate the global variables.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
EnumerateValue(I);
// Enumerate the functions.
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
EnumerateValue(I);
EnumerateAttributes(cast<Function>(I)->getAttributes());
}
// Enumerate the aliases.
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
I != E; ++I)
EnumerateValue(I);
// Remember what is the cutoff between globalvalue's and other constants.
unsigned FirstConstant = Values.size();
// Enumerate the global variable initializers.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
if (I->hasInitializer())
EnumerateValue(I->getInitializer());
// Enumerate the aliasees.
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
I != E; ++I)
EnumerateValue(I->getAliasee());
// Enumerate the prefix data constants.
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->hasPrefixData())
EnumerateValue(I->getPrefixData());
// Enumerate the prologue data constants.
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->hasPrologueData())
EnumerateValue(I->getPrologueData());
// Enumerate the metadata type.
//
// TODO: Move this to ValueEnumerator::EnumerateOperandType() once bitcode
// only encodes the metadata type when it's used as a value.
EnumerateType(Type::getMetadataTy(M.getContext()));
// Insert constants and metadata that are named at module level into the slot
// pool so that the module symbol table can refer to them...
EnumerateValueSymbolTable(M.getValueSymbolTable());
EnumerateNamedMetadata(M);
SmallVector<std::pair<unsigned, MDNode *>, 8> MDs;
// Enumerate types used by function bodies and argument lists.
for (const Function &F : M) {
for (const Argument &A : F.args())
EnumerateType(A.getType());
// Enumerate metadata attached to this function.
F.getAllMetadata(MDs);
for (const auto &I : MDs)
EnumerateMetadata(I.second);
for (const BasicBlock &BB : F)
for (const Instruction &I : BB) {
for (const Use &Op : I.operands()) {
auto *MD = dyn_cast<MetadataAsValue>(&Op);
if (!MD) {
EnumerateOperandType(Op);
continue;
}
// Local metadata is enumerated during function-incorporation.
if (isa<LocalAsMetadata>(MD->getMetadata()))
continue;
EnumerateMetadata(MD->getMetadata());
}
EnumerateType(I.getType());
if (const CallInst *CI = dyn_cast<CallInst>(&I))
EnumerateAttributes(CI->getAttributes());
else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I))
EnumerateAttributes(II->getAttributes());
// Enumerate metadata attached with this instruction.
MDs.clear();
I.getAllMetadataOtherThanDebugLoc(MDs);
for (unsigned i = 0, e = MDs.size(); i != e; ++i)
EnumerateMetadata(MDs[i].second);
// Don't enumerate the location directly -- it has a special record
// type -- but enumerate its operands.
if (DILocation *L = I.getDebugLoc())
EnumerateMDNodeOperands(L);
}
}
// Optimize constant ordering.
OptimizeConstants(FirstConstant, Values.size());
}