#include "llvm/InstrTypes.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/GVMaterializer.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/LeakDetector.h"
#include "SymbolTableListTraitsImpl.h"
-#include "llvm/TypeSymbolTable.h"
#include <algorithm>
#include <cstdarg>
#include <cstdlib>
// Methods to implement the globals and functions lists.
//
-GlobalVariable *ilist_traits<GlobalVariable>::createSentinel() {
- GlobalVariable *Ret = new GlobalVariable(Type::Int32Ty, false,
- GlobalValue::ExternalLinkage);
- // This should not be garbage monitored.
- LeakDetector::removeGarbageObject(Ret);
- return Ret;
-}
-GlobalAlias *ilist_traits<GlobalAlias>::createSentinel() {
- GlobalAlias *Ret = new GlobalAlias(Type::Int32Ty,
- GlobalValue::ExternalLinkage);
- // This should not be garbage monitored.
- LeakDetector::removeGarbageObject(Ret);
- return Ret;
-}
-
// Explicit instantiations of SymbolTableListTraits since some of the methods
// are not in the public header file.
-template class SymbolTableListTraits<GlobalVariable, Module>;
-template class SymbolTableListTraits<Function, Module>;
-template class SymbolTableListTraits<GlobalAlias, Module>;
+template class llvm::SymbolTableListTraits<Function, Module>;
+template class llvm::SymbolTableListTraits<GlobalVariable, Module>;
+template class llvm::SymbolTableListTraits<GlobalAlias, Module>;
//===----------------------------------------------------------------------===//
// Primitive Module methods.
//
-Module::Module(const std::string &MID)
- : ModuleID(MID), DataLayout("") {
+Module::Module(StringRef MID, LLVMContext& C)
+ : Context(C), Materializer(NULL), ModuleID(MID) {
ValSymTab = new ValueSymbolTable();
- TypeSymTab = new TypeSymbolTable();
+ NamedMDSymTab = new StringMap<NamedMDNode *>();
+ Context.addModule(this);
}
Module::~Module() {
+ Context.removeModule(this);
dropAllReferences();
GlobalList.clear();
FunctionList.clear();
AliasList.clear();
LibraryList.clear();
+ NamedMDList.clear();
delete ValSymTab;
- delete TypeSymTab;
+ delete static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab);
}
-/// Target endian information...
+/// Target endian information.
Module::Endianness Module::getEndianness() const {
- std::string temp = DataLayout;
+ StringRef temp = DataLayout;
Module::Endianness ret = AnyEndianness;
while (!temp.empty()) {
- std::string token = getToken(temp, "-");
+ std::pair<StringRef, StringRef> P = getToken(temp, "-");
+
+ StringRef token = P.first;
+ temp = P.second;
if (token[0] == 'e') {
ret = LittleEndian;
return ret;
}
-/// Target Pointer Size information...
+/// Target Pointer Size information.
Module::PointerSize Module::getPointerSize() const {
- std::string temp = DataLayout;
+ StringRef temp = DataLayout;
Module::PointerSize ret = AnyPointerSize;
while (!temp.empty()) {
- std::string token = getToken(temp, "-");
- char signal = getToken(token, ":")[0];
+ std::pair<StringRef, StringRef> TmpP = getToken(temp, "-");
+ temp = TmpP.second;
+ TmpP = getToken(TmpP.first, ":");
+ StringRef token = TmpP.second, signalToken = TmpP.first;
- if (signal == 'p') {
- int size = atoi(getToken(token, ":").c_str());
+ if (signalToken[0] == 'p') {
+ int size = 0;
+ getToken(token, ":").first.getAsInteger(10, size);
if (size == 32)
ret = Pointer32;
else if (size == 64)
/// getNamedValue - Return the first global value in the module with
/// the specified name, of arbitrary type. This method returns null
/// if a global with the specified name is not found.
-GlobalValue *Module::getNamedValue(const std::string &Name) const {
+GlobalValue *Module::getNamedValue(StringRef Name) const {
return cast_or_null<GlobalValue>(getValueSymbolTable().lookup(Name));
}
-GlobalValue *Module::getNamedValue(const char *Name) const {
- llvm::Value *V = getValueSymbolTable().lookup(Name, Name+strlen(Name));
- return cast_or_null<GlobalValue>(V);
+/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
+/// This ID is uniqued across modules in the current LLVMContext.
+unsigned Module::getMDKindID(StringRef Name) const {
+ return Context.getMDKindID(Name);
+}
+
+/// getMDKindNames - Populate client supplied SmallVector with the name for
+/// custom metadata IDs registered in this LLVMContext. ID #0 is not used,
+/// so it is filled in as an empty string.
+void Module::getMDKindNames(SmallVectorImpl<StringRef> &Result) const {
+ return Context.getMDKindNames(Result);
}
+
//===----------------------------------------------------------------------===//
// Methods for easy access to the functions in the module.
//
// it. This is nice because it allows most passes to get away with not handling
// the symbol table directly for this common task.
//
-Constant *Module::getOrInsertFunction(const std::string &Name,
- const FunctionType *Ty,
+Constant *Module::getOrInsertFunction(StringRef Name,
+ FunctionType *Ty,
AttrListPtr AttributeList) {
// See if we have a definition for the specified function already.
GlobalValue *F = getNamedValue(Name);
F->setName("");
// Retry, now there won't be a conflict.
Constant *NewF = getOrInsertFunction(Name, Ty);
- F->setName(&Name[0], Name.size());
+ F->setName(Name);
return NewF;
}
return F;
}
-Constant *Module::getOrInsertTargetIntrinsic(const std::string &Name,
- const FunctionType *Ty,
+Constant *Module::getOrInsertTargetIntrinsic(StringRef Name,
+ FunctionType *Ty,
AttrListPtr AttributeList) {
// See if we have a definition for the specified function already.
GlobalValue *F = getNamedValue(Name);
return F;
}
-Constant *Module::getOrInsertFunction(const std::string &Name,
- const FunctionType *Ty) {
+Constant *Module::getOrInsertFunction(StringRef Name,
+ FunctionType *Ty) {
AttrListPtr AttributeList = AttrListPtr::get((AttributeWithIndex *)0, 0);
return getOrInsertFunction(Name, Ty, AttributeList);
}
// This version of the method takes a null terminated list of function
// arguments, which makes it easier for clients to use.
//
-Constant *Module::getOrInsertFunction(const std::string &Name,
+Constant *Module::getOrInsertFunction(StringRef Name,
AttrListPtr AttributeList,
- const Type *RetTy, ...) {
+ Type *RetTy, ...) {
va_list Args;
va_start(Args, RetTy);
// Build the list of argument types...
- std::vector<const Type*> ArgTys;
- while (const Type *ArgTy = va_arg(Args, const Type*))
+ std::vector<Type*> ArgTys;
+ while (Type *ArgTy = va_arg(Args, Type*))
ArgTys.push_back(ArgTy);
va_end(Args);
// Build the function type and chain to the other getOrInsertFunction...
- return getOrInsertFunction(Name, FunctionType::get(RetTy, ArgTys, false),
+ return getOrInsertFunction(Name,
+ FunctionType::get(RetTy, ArgTys, false),
AttributeList);
}
-Constant *Module::getOrInsertFunction(const std::string &Name,
- const Type *RetTy, ...) {
+Constant *Module::getOrInsertFunction(StringRef Name,
+ Type *RetTy, ...) {
va_list Args;
va_start(Args, RetTy);
// Build the list of argument types...
- std::vector<const Type*> ArgTys;
- while (const Type *ArgTy = va_arg(Args, const Type*))
+ std::vector<Type*> ArgTys;
+ while (Type *ArgTy = va_arg(Args, Type*))
ArgTys.push_back(ArgTy);
va_end(Args);
// Build the function type and chain to the other getOrInsertFunction...
- return getOrInsertFunction(Name, FunctionType::get(RetTy, ArgTys, false),
+ return getOrInsertFunction(Name,
+ FunctionType::get(RetTy, ArgTys, false),
AttrListPtr::get((AttributeWithIndex *)0, 0));
}
// getFunction - Look up the specified function in the module symbol table.
// If it does not exist, return null.
//
-Function *Module::getFunction(const std::string &Name) const {
- return dyn_cast_or_null<Function>(getNamedValue(Name));
-}
-
-Function *Module::getFunction(const char *Name) const {
+Function *Module::getFunction(StringRef Name) const {
return dyn_cast_or_null<Function>(getNamedValue(Name));
}
/// If AllowLocal is set to true, this function will return types that
/// have an local. By default, these types are not returned.
///
-GlobalVariable *Module::getGlobalVariable(const std::string &Name,
+GlobalVariable *Module::getGlobalVariable(StringRef Name,
bool AllowLocal) const {
if (GlobalVariable *Result =
dyn_cast_or_null<GlobalVariable>(getNamedValue(Name)))
/// with a constantexpr cast to the right type.
/// 3. Finally, if the existing global is the correct delclaration, return the
/// existing global.
-Constant *Module::getOrInsertGlobal(const std::string &Name, const Type *Ty) {
+Constant *Module::getOrInsertGlobal(StringRef Name, Type *Ty) {
// See if we have a definition for the specified global already.
GlobalVariable *GV = dyn_cast_or_null<GlobalVariable>(getNamedValue(Name));
if (GV == 0) {
// Nope, add it
GlobalVariable *New =
- new GlobalVariable(Ty, false, GlobalVariable::ExternalLinkage, 0, Name);
- GlobalList.push_back(New);
- return New; // Return the new declaration.
+ new GlobalVariable(*this, Ty, false, GlobalVariable::ExternalLinkage,
+ 0, Name);
+ return New; // Return the new declaration.
}
// If the variable exists but has the wrong type, return a bitcast to the
// getNamedAlias - Look up the specified global in the module symbol table.
// If it does not exist, return null.
//
-GlobalAlias *Module::getNamedAlias(const std::string &Name) const {
+GlobalAlias *Module::getNamedAlias(StringRef Name) const {
return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name));
}
-//===----------------------------------------------------------------------===//
-// Methods for easy access to the types in the module.
-//
+/// getNamedMetadata - Return the first NamedMDNode in the module with the
+/// specified name. This method returns null if a NamedMDNode with the
+/// specified name is not found.
+NamedMDNode *Module::getNamedMetadata(const Twine &Name) const {
+ SmallString<256> NameData;
+ StringRef NameRef = Name.toStringRef(NameData);
+ return static_cast<StringMap<NamedMDNode*> *>(NamedMDSymTab)->lookup(NameRef);
+}
+/// getOrInsertNamedMetadata - Return the first named MDNode in the module
+/// with the specified name. This method returns a new NamedMDNode if a
+/// NamedMDNode with the specified name is not found.
+NamedMDNode *Module::getOrInsertNamedMetadata(StringRef Name) {
+ NamedMDNode *&NMD =
+ (*static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab))[Name];
+ if (!NMD) {
+ NMD = new NamedMDNode(Name);
+ NMD->setParent(this);
+ NamedMDList.push_back(NMD);
+ }
+ return NMD;
+}
-// addTypeName - Insert an entry in the symbol table mapping Str to Type. If
-// there is already an entry for this name, true is returned and the symbol
-// table is not modified.
-//
-bool Module::addTypeName(const std::string &Name, const Type *Ty) {
- TypeSymbolTable &ST = getTypeSymbolTable();
+void Module::eraseNamedMetadata(NamedMDNode *NMD) {
+ static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab)->erase(NMD->getName());
+ NamedMDList.erase(NMD);
+}
- if (ST.lookup(Name)) return true; // Already in symtab...
- // Not in symbol table? Set the name with the Symtab as an argument so the
- // type knows what to update...
- ST.insert(Name, Ty);
+//===----------------------------------------------------------------------===//
+// Methods to control the materialization of GlobalValues in the Module.
+//
+void Module::setMaterializer(GVMaterializer *GVM) {
+ assert(!Materializer &&
+ "Module already has a GVMaterializer. Call MaterializeAllPermanently"
+ " to clear it out before setting another one.");
+ Materializer.reset(GVM);
+}
+bool Module::isMaterializable(const GlobalValue *GV) const {
+ if (Materializer)
+ return Materializer->isMaterializable(GV);
return false;
}
-/// getTypeByName - Return the type with the specified name in this module, or
-/// null if there is none by that name.
-const Type *Module::getTypeByName(const std::string &Name) const {
- const TypeSymbolTable &ST = getTypeSymbolTable();
- return cast_or_null<Type>(ST.lookup(Name));
+bool Module::isDematerializable(const GlobalValue *GV) const {
+ if (Materializer)
+ return Materializer->isDematerializable(GV);
+ return false;
}
-// getTypeName - If there is at least one entry in the symbol table for the
-// specified type, return it.
-//
-std::string Module::getTypeName(const Type *Ty) const {
- const TypeSymbolTable &ST = getTypeSymbolTable();
+bool Module::Materialize(GlobalValue *GV, std::string *ErrInfo) {
+ if (Materializer)
+ return Materializer->Materialize(GV, ErrInfo);
+ return false;
+}
- TypeSymbolTable::const_iterator TI = ST.begin();
- TypeSymbolTable::const_iterator TE = ST.end();
- if ( TI == TE ) return ""; // No names for types
+void Module::Dematerialize(GlobalValue *GV) {
+ if (Materializer)
+ return Materializer->Dematerialize(GV);
+}
- while (TI != TE && TI->second != Ty)
- ++TI;
+bool Module::MaterializeAll(std::string *ErrInfo) {
+ if (!Materializer)
+ return false;
+ return Materializer->MaterializeModule(this, ErrInfo);
+}
- if (TI != TE) // Must have found an entry!
- return TI->first;
- return ""; // Must not have found anything...
+bool Module::MaterializeAllPermanently(std::string *ErrInfo) {
+ if (MaterializeAll(ErrInfo))
+ return true;
+ Materializer.reset();
+ return false;
}
//===----------------------------------------------------------------------===//
I->dropAllReferences();
}
-void Module::addLibrary(const std::string& Lib) {
+void Module::addLibrary(StringRef Lib) {
for (Module::lib_iterator I = lib_begin(), E = lib_end(); I != E; ++I)
if (*I == Lib)
return;
LibraryList.push_back(Lib);
}
-void Module::removeLibrary(const std::string& Lib) {
+void Module::removeLibrary(StringRef Lib) {
LibraryListType::iterator I = LibraryList.begin();
LibraryListType::iterator E = LibraryList.end();
for (;I != E; ++I)
return;
}
}
+
+//===----------------------------------------------------------------------===//
+// Type finding functionality.
+//===----------------------------------------------------------------------===//
+
+namespace {
+ /// TypeFinder - Walk over a module, identifying all of the types that are
+ /// used by the module.
+ class TypeFinder {
+ // To avoid walking constant expressions multiple times and other IR
+ // objects, we keep several helper maps.
+ DenseSet<const Value*> VisitedConstants;
+ DenseSet<Type*> VisitedTypes;
+
+ std::vector<StructType*> &StructTypes;
+ public:
+ TypeFinder(std::vector<StructType*> &structTypes)
+ : StructTypes(structTypes) {}
+
+ void run(const Module &M) {
+ // 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);
+ }
+
+ SmallVector<std::pair<unsigned, MDNode*>, 4> MDForInst;
+
+ // Get types from functions.
+ for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) {
+ incorporateType(FI->getType());
+
+ 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 and all its operands.
+ incorporateType(I.getType());
+ for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end();
+ OI != OE; ++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));
+ }
+ }
+
+ private:
+ void incorporateType(Type *Ty) {
+ // Check to see if we're already visited this type.
+ if (!VisitedTypes.insert(Ty).second)
+ return;
+
+ // If this is a structure or opaque type, add a name for the type.
+ if (StructType *STy = dyn_cast<StructType>(Ty))
+ StructTypes.push_back(STy);
+
+ // Recursively walk all contained types.
+ for (Type::subtype_iterator I = Ty->subtype_begin(),
+ E = Ty->subtype_end(); I != E; ++I)
+ incorporateType(*I);
+ }
+
+ /// incorporateValue - This method is used to walk operand lists finding
+ /// types hiding in constant expressions and other operands that won't be
+ /// walked in other ways. GlobalValues, basic blocks, instructions, and
+ /// inst operands are all explicitly enumerated.
+ void incorporateValue(const Value *V) {
+ if (const MDNode *M = dyn_cast<MDNode>(V))
+ return incorporateMDNode(M);
+ if (!isa<Constant>(V) || isa<GlobalValue>(V)) return;
+
+ // Already visited?
+ if (!VisitedConstants.insert(V).second)
+ return;
+
+ // Check this type.
+ incorporateType(V->getType());
+
+ // Look in operands for types.
+ const User *U = cast<User>(V);
+ for (Constant::const_op_iterator I = U->op_begin(),
+ E = U->op_end(); I != E;++I)
+ incorporateValue(*I);
+ }
+
+ void incorporateMDNode(const MDNode *V) {
+
+ // Already visited?
+ if (!VisitedConstants.insert(V).second)
+ return;
+
+ // Look in operands for types.
+ for (unsigned i = 0, e = V->getNumOperands(); i != e; ++i)
+ if (Value *Op = V->getOperand(i))
+ incorporateValue(Op);
+ }
+ };
+} // end anonymous namespace
+
+void Module::findUsedStructTypes(std::vector<StructType*> &StructTypes) const {
+ TypeFinder(StructTypes).run(*this);
+}
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