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Diffstat (limited to 'lib/VMCore/Module.cpp')
| -rw-r--r-- | lib/VMCore/Module.cpp | 469 |
1 files changed, 0 insertions, 469 deletions
diff --git a/lib/VMCore/Module.cpp b/lib/VMCore/Module.cpp deleted file mode 100644 index 5b5176b3c70b..000000000000 --- a/lib/VMCore/Module.cpp +++ /dev/null @@ -1,469 +0,0 @@ -//===-- Module.cpp - Implement the Module class ---------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the Module class for the VMCore library. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Module.h" -#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 <algorithm> -#include <cstdarg> -#include <cstdlib> -using namespace llvm; - -//===----------------------------------------------------------------------===// -// Methods to implement the globals and functions lists. -// - -// Explicit instantiations of SymbolTableListTraits since some of the methods -// are not in the public header file. -template class llvm::SymbolTableListTraits<Function, Module>; -template class llvm::SymbolTableListTraits<GlobalVariable, Module>; -template class llvm::SymbolTableListTraits<GlobalAlias, Module>; - -//===----------------------------------------------------------------------===// -// Primitive Module methods. -// - -Module::Module(StringRef MID, LLVMContext& C) - : Context(C), Materializer(NULL), ModuleID(MID) { - ValSymTab = new ValueSymbolTable(); - 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 static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab); -} - -/// Target endian information. -Module::Endianness Module::getEndianness() const { - StringRef temp = DataLayout; - Module::Endianness ret = AnyEndianness; - - while (!temp.empty()) { - 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. -Module::PointerSize Module::getPointerSize() const { - StringRef temp = DataLayout; - Module::PointerSize ret = AnyPointerSize; - - while (!temp.empty()) { - 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. -// - -// getOrInsertFunction - Look up the specified function in the module symbol -// table. If it does not exist, add a prototype for the function and return -// 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(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); - 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->hasLocalLinkage()) { - // Clear the function's name. - F->setName(""); - // Retry, now there won't be a conflict. - 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::getUnqual(Ty)) - return ConstantExpr::getBitCast(F, PointerType::getUnqual(Ty)); - - // Otherwise, we just found the existing function or a prototype. - 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 -// table. If it does not exist, add a prototype for the function and return it. -// This version of the method takes a null terminated list of function -// arguments, which makes it easier for clients to use. -// -Constant *Module::getOrInsertFunction(StringRef Name, - AttrListPtr AttributeList, - 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), - 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(StringRef Name) const { - return dyn_cast_or_null<Function>(getNamedValue(Name)); -} - -//===----------------------------------------------------------------------===// -// Methods for easy access to the global variables in the module. -// - -/// getGlobalVariable - Look up the specified global variable in the module -/// 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 AllowLocal is set to true, this function will return types that -/// have an local. By default, these types are not returned. -/// -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(StringRef Name) const { - return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name)); -} - -/// 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; -} - -/// 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); -} - -/// 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)); - } -} - -/// 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"); -} - -/// 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"); -} - -/// 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); -} - -//===----------------------------------------------------------------------===// -// 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; -} - -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; -} - -void Module::Dematerialize(GlobalValue *GV) { - if (Materializer) - return Materializer->Dematerialize(GV); -} - -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; -} - -//===----------------------------------------------------------------------===// -// Other module related stuff. -// - - -// 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 -// is deleted for real. Note that no operations are valid on an object that -// has "dropped all references", except operator delete. -// -void Module::dropAllReferences() { - for(Module::iterator I = begin(), E = end(); I != E; ++I) - I->dropAllReferences(); - - for(Module::global_iterator I = global_begin(), E = global_end(); I != E; ++I) - I->dropAllReferences(); - - for(Module::alias_iterator I = alias_begin(), E = alias_end(); I != E; ++I) - I->dropAllReferences(); -} - -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(StringRef Lib) { - LibraryListType::iterator I = LibraryList.begin(); - LibraryListType::iterator E = LibraryList.end(); - for (;I != E; ++I) - if (*I == Lib) { - LibraryList.erase(I); - return; - } -} |