//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#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>
-#include <map>
using namespace llvm;
//===----------------------------------------------------------------------===//
// Methods to implement the globals and functions lists.
//
-Function *ilist_traits<Function>::createSentinel() {
- FunctionType *FTy =
- FunctionType::get(Type::VoidTy, std::vector<const Type*>(), false);
- Function *Ret = new Function(FTy, GlobalValue::ExternalLinkage);
- // This should not be garbage monitored.
- LeakDetector::removeGarbageObject(Ret);
- return Ret;
-}
-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;
-}
-
-iplist<Function> &ilist_traits<Function>::getList(Module *M) {
- return M->getFunctionList();
-}
-iplist<GlobalVariable> &ilist_traits<GlobalVariable>::getList(Module *M) {
- return M->getGlobalList();
-}
-iplist<GlobalAlias> &ilist_traits<GlobalAlias>::getList(Module *M) {
- return M->getAliasList();
-}
-
// 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);
}
-// Module::dump() - Allow printing from debugger
-void Module::dump() const {
- print(*cerr.stream());
-}
-
-/// 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;
} else if (token[0] == 'E') {
ret = BigEndian;
}
}
-
+
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];
-
- if (signal == 'p') {
- int size = atoi(getToken(token, ":").c_str());
+ std::pair<StringRef, StringRef> TmpP = getToken(temp, "-");
+ temp = TmpP.second;
+ TmpP = getToken(TmpP.first, ":");
+ StringRef token = TmpP.second, signalToken = TmpP.first;
+
+ if (signalToken[0] == 'p') {
+ int size = 0;
+ getToken(token, ":").first.getAsInteger(10, size);
if (size == 32)
ret = Pointer32;
else if (size == 64)
ret = Pointer64;
}
}
-
+
return ret;
}
+/// 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(StringRef Name) const {
+ return cast_or_null<GlobalValue>(getValueSymbolTable().lookup(Name));
+}
+
+/// 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) {
- ValueSymbolTable &SymTab = getValueSymbolTable();
-
+Constant *Module::getOrInsertFunction(StringRef Name,
+ FunctionType *Ty,
+ AttrListPtr AttributeList) {
// See if we have a definition for the specified function already.
- GlobalValue *F = dyn_cast_or_null<GlobalValue>(SymTab.lookup(Name));
+ GlobalValue *F = getNamedValue(Name);
if (F == 0) {
// Nope, add it
- Function *New = new Function(Ty, GlobalVariable::ExternalLinkage, Name);
+ Function *New = Function::Create(Ty, GlobalVariable::ExternalLinkage, Name);
+ if (!New->isIntrinsic()) // Intrinsics get attrs set on construction
+ New->setAttributes(AttributeList);
FunctionList.push_back(New);
return New; // Return the new prototype.
}
// Okay, the function exists. Does it have externally visible linkage?
- if (F->hasInternalLinkage()) {
- // Rename the function.
- F->setName(SymTab.getUniqueName(F->getName()));
+ if (F->hasLocalLinkage()) {
+ // Clear the function's name.
+ F->setName("");
// Retry, now there won't be a conflict.
- return getOrInsertFunction(Name, Ty);
+ Constant *NewF = getOrInsertFunction(Name, Ty);
+ F->setName(Name);
+ return NewF;
}
// If the function exists but has the wrong type, return a bitcast to the
// right type.
- if (F->getType() != PointerType::get(Ty))
- return ConstantExpr::getBitCast(F, PointerType::get(Ty));
-
+ if (F->getType() != PointerType::getUnqual(Ty))
+ return ConstantExpr::getBitCast(F, PointerType::getUnqual(Ty));
+
// Otherwise, we just found the existing function or a prototype.
- return F;
+ return F;
+}
+
+Constant *Module::getOrInsertTargetIntrinsic(StringRef Name,
+ FunctionType *Ty,
+ AttrListPtr AttributeList) {
+ // See if we have a definition for the specified function already.
+ GlobalValue *F = getNamedValue(Name);
+ if (F == 0) {
+ // Nope, add it
+ Function *New = Function::Create(Ty, GlobalVariable::ExternalLinkage, Name);
+ New->setAttributes(AttributeList);
+ FunctionList.push_back(New);
+ return New; // Return the new prototype.
+ }
+
+ // Otherwise, we just found the existing function or a prototype.
+ return F;
+}
+
+Constant *Module::getOrInsertFunction(StringRef Name,
+ FunctionType *Ty) {
+ return getOrInsertFunction(Name, Ty, AttrListPtr());
}
// getOrInsertFunction - Look up the specified function in the module symbol
// 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,
- const Type *RetTy, ...) {
+Constant *Module::getOrInsertFunction(StringRef Name,
+ AttrListPtr AttributeList,
+ 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(StringRef Name,
+ Type *RetTy, ...) {
+ va_list Args;
+ va_start(Args, RetTy);
+
+ // Build the list of argument types...
+ 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),
+ AttrListPtr());
+}
// 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 {
- const ValueSymbolTable &SymTab = getValueSymbolTable();
- return dyn_cast_or_null<Function>(SymTab.lookup(Name));
+Function *Module::getFunction(StringRef Name) const {
+ return dyn_cast_or_null<Function>(getNamedValue(Name));
}
//===----------------------------------------------------------------------===//
/// symbol table. If it does not exist, return null. The type argument
/// should be the underlying type of the global, i.e., it should not have
/// the top-level PointerType, which represents the address of the global.
-/// If AllowInternal is set to true, this function will return types that
-/// have InternalLinkage. By default, these types are not returned.
+/// 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,
- bool AllowInternal) const {
- if (Value *V = ValSymTab->lookup(Name)) {
- GlobalVariable *Result = dyn_cast<GlobalVariable>(V);
- if (Result && (AllowInternal || !Result->hasInternalLinkage()))
+GlobalVariable *Module::getGlobalVariable(StringRef Name,
+ bool AllowLocal) const {
+ if (GlobalVariable *Result =
+ dyn_cast_or_null<GlobalVariable>(getNamedValue(Name)))
+ if (AllowLocal || !Result->hasLocalLinkage())
return Result;
- }
return 0;
}
+/// getOrInsertGlobal - Look up the specified global in the module symbol table.
+/// 1. If it does not exist, add a declaration of the global and return it.
+/// 2. Else, the global exists but has the wrong type: return the function
+/// 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(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(*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
+ // right type.
+ if (GV->getType() != PointerType::getUnqual(Ty))
+ return ConstantExpr::getBitCast(GV, PointerType::getUnqual(Ty));
+
+ // Otherwise, we just found the existing function or a prototype.
+ return GV;
+}
+
//===----------------------------------------------------------------------===//
// Methods for easy access to the global variables in the module.
//
// 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 {
- const ValueSymbolTable &SymTab = getValueSymbolTable();
- return dyn_cast_or_null<GlobalAlias>(SymTab.lookup(Name));
+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();
+/// eraseNamedMetadata - Remove the given NamedMDNode from this module and
+/// delete it.
+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...
+/// getModuleFlagsMetadata - Returns the module flags in the provided vector.
+void Module::
+getModuleFlagsMetadata(SmallVectorImpl<ModuleFlagEntry> &Flags) const {
+ const NamedMDNode *ModFlags = getModuleFlagsMetadata();
+ if (!ModFlags) return;
+
+ for (unsigned i = 0, e = ModFlags->getNumOperands(); i != e; ++i) {
+ MDNode *Flag = ModFlags->getOperand(i);
+ ConstantInt *Behavior = cast<ConstantInt>(Flag->getOperand(0));
+ MDString *Key = cast<MDString>(Flag->getOperand(1));
+ Value *Val = Flag->getOperand(2);
+ Flags.push_back(ModuleFlagEntry(ModFlagBehavior(Behavior->getZExtValue()),
+ Key, Val));
+ }
+}
- // Not in symbol table? Set the name with the Symtab as an argument so the
- // type knows what to update...
- ST.insert(Name, Ty);
+/// getModuleFlagsMetadata - Returns the NamedMDNode in the module that
+/// represents module-level flags. This method returns null if there are no
+/// module-level flags.
+NamedMDNode *Module::getModuleFlagsMetadata() const {
+ return getNamedMetadata("llvm.module.flags");
+}
- return false;
+/// getOrInsertModuleFlagsMetadata - Returns the NamedMDNode in the module that
+/// represents module-level flags. If module-level flags aren't found, it
+/// creates the named metadata that contains them.
+NamedMDNode *Module::getOrInsertModuleFlagsMetadata() {
+ return getOrInsertNamedMetadata("llvm.module.flags");
}
-/// 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));
+/// addModuleFlag - Add a module-level flag to the module-level flags
+/// metadata. It will create the module-level flags named metadata if it doesn't
+/// already exist.
+void Module::addModuleFlag(ModFlagBehavior Behavior, StringRef Key,
+ Value *Val) {
+ Type *Int32Ty = Type::getInt32Ty(Context);
+ Value *Ops[3] = {
+ ConstantInt::get(Int32Ty, Behavior), MDString::get(Context, Key), Val
+ };
+ getOrInsertModuleFlagsMetadata()->addOperand(MDNode::get(Context, Ops));
+}
+void Module::addModuleFlag(ModFlagBehavior Behavior, StringRef Key,
+ uint32_t Val) {
+ Type *Int32Ty = Type::getInt32Ty(Context);
+ addModuleFlag(Behavior, Key, ConstantInt::get(Int32Ty, Val));
+}
+void Module::addModuleFlag(MDNode *Node) {
+ assert(Node->getNumOperands() == 3 &&
+ "Invalid number of operands for module flag!");
+ assert(isa<ConstantInt>(Node->getOperand(0)) &&
+ isa<MDString>(Node->getOperand(1)) &&
+ "Invalid operand types for module flag!");
+ getOrInsertModuleFlagsMetadata()->addOperand(Node);
}
-// getTypeName - If there is at least one entry in the symbol table for the
-// specified type, return it.
+//===----------------------------------------------------------------------===//
+// Methods to control the materialization of GlobalValues in the Module.
//
-std::string Module::getTypeName(const Type *Ty) const {
- const TypeSymbolTable &ST = getTypeSymbolTable();
+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;
+}
- TypeSymbolTable::const_iterator TI = ST.begin();
- TypeSymbolTable::const_iterator TE = ST.end();
- if ( TI == TE ) return ""; // No names for types
+bool Module::isDematerializable(const GlobalValue *GV) const {
+ if (Materializer)
+ return Materializer->isDematerializable(GV);
+ return false;
+}
+
+bool Module::Materialize(GlobalValue *GV, std::string *ErrInfo) {
+ if (Materializer)
+ return Materializer->Materialize(GV, ErrInfo);
+ return false;
+}
- while (TI != TE && TI->second != Ty)
- ++TI;
+void Module::Dematerialize(GlobalValue *GV) {
+ if (Materializer)
+ return Materializer->Dematerialize(GV);
+}
- if (TI != TE) // Must have found an entry!
- return TI->first;
- return ""; // Must not have found anything...
+bool Module::MaterializeAll(std::string *ErrInfo) {
+ if (!Materializer)
+ return false;
+ return Materializer->MaterializeModule(this, ErrInfo);
+}
+
+bool Module::MaterializeAllPermanently(std::string *ErrInfo) {
+ if (MaterializeAll(ErrInfo))
+ return true;
+ Materializer.reset();
+ return false;
}
//===----------------------------------------------------------------------===//
//
-// dropAllReferences() - This function causes all the subelementss to "let go"
+// dropAllReferences() - This function causes all the subelements to "let go"
// of all references that they are maintaining. This allows one to 'delete' a
// whole module at a time, even though there may be circular references... first
// all references are dropped, and all use counts go to zero. Then everything
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;
}
}
-
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