X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FModule.cpp;h=896245d69e6754cb2b21cb9304f7b164fcc00c05;hb=2625f9b2e4388a957286063f6c7fe5406fd0ca7a;hp=06c25d366c5db3ec02ceca67e46c3df1cdec89ac;hpb=79df7c0aaa18129e55968c8783ef8346807bd4af;p=oota-llvm.git diff --git a/lib/VMCore/Module.cpp b/lib/VMCore/Module.cpp index 06c25d366c5..896245d69e6 100644 --- a/lib/VMCore/Module.cpp +++ b/lib/VMCore/Module.cpp @@ -1,115 +1,397 @@ -//===-- Module.cpp - Implement the Module class ------------------*- C++ -*--=// +//===-- 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/Function.h" -#include "llvm/GlobalVariable.h" #include "llvm/InstrTypes.h" -#include "llvm/ValueHolderImpl.h" -#include "llvm/Type.h" -#include "llvm/ConstantVals.h" -#include "Support/STLExtras.h" -#include +#include "llvm/Constants.h" +#include "llvm/DerivedTypes.h" +#include "llvm/ADT/STLExtras.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/Support/LeakDetector.h" +#include "SymbolTableListTraitsImpl.h" +#include "llvm/TypeSymbolTable.h" +#include +#include +#include +using namespace llvm; -// Instantiate Templates - This ugliness is the price we have to pay -// for having a DefHolderImpl.h file seperate from DefHolder.h! :( +//===----------------------------------------------------------------------===// +// Methods to implement the globals and functions lists. // -template class ValueHolder; -template class ValueHolder; -// Define the GlobalValueRefMap as a struct that wraps a map so that we don't -// have Module.h depend on -// -struct GlobalValueRefMap : public std::map{ -}; +Function *ilist_traits::createSentinel() { + FunctionType *FTy = + FunctionType::get(Type::VoidTy, std::vector(), false); + Function *Ret = Function::Create(FTy, GlobalValue::ExternalLinkage); + // This should not be garbage monitored. + LeakDetector::removeGarbageObject(Ret); + return Ret; +} +GlobalVariable *ilist_traits::createSentinel() { + GlobalVariable *Ret = new GlobalVariable(Type::Int32Ty, false, + GlobalValue::ExternalLinkage); + // This should not be garbage monitored. + LeakDetector::removeGarbageObject(Ret); + return Ret; +} +GlobalAlias *ilist_traits::createSentinel() { + GlobalAlias *Ret = new GlobalAlias(Type::Int32Ty, + GlobalValue::ExternalLinkage); + // This should not be garbage monitored. + LeakDetector::removeGarbageObject(Ret); + return Ret; +} +iplist &ilist_traits::getList(Module *M) { + return M->getFunctionList(); +} +iplist &ilist_traits::getList(Module *M) { + return M->getGlobalList(); +} +iplist &ilist_traits::getList(Module *M) { + return M->getAliasList(); +} -Module::Module() - : Value(Type::VoidTy, Value::ModuleVal, ""), SymTabValue(this), - GlobalList(this, this), FunctionList(this, this), GVRefMap(0) { +// Explicit instantiations of SymbolTableListTraits since some of the methods +// are not in the public header file. +template class SymbolTableListTraits; +template class SymbolTableListTraits; +template class SymbolTableListTraits; + +//===----------------------------------------------------------------------===// +// Primitive Module methods. +// + +Module::Module(const std::string &MID) + : ModuleID(MID), DataLayout("") { + ValSymTab = new ValueSymbolTable(); + TypeSymTab = new TypeSymbolTable(); } Module::~Module() { dropAllReferences(); - GlobalList.delete_all(); - GlobalList.setParent(0); - FunctionList.delete_all(); - FunctionList.setParent(0); + GlobalList.clear(); + FunctionList.clear(); + AliasList.clear(); + LibraryList.clear(); + delete ValSymTab; + delete TypeSymTab; } +/// Target endian information... +Module::Endianness Module::getEndianness() const { + std::string temp = DataLayout; + Module::Endianness ret = AnyEndianness; + + while (!temp.empty()) { + std::string token = getToken(temp, "-"); + + if (token[0] == 'e') { + ret = LittleEndian; + } else if (token[0] == 'E') { + ret = BigEndian; + } + } + + return ret; +} -// dropAllReferences() - This function causes all the subinstructions to "let -// go" of all references that they are maintaining. This allows one to -// 'delete' a whole class 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 delete'd for real. Note that no operations are -// valid on an object that has "dropped all references", except operator -// delete. -// -void Module::dropAllReferences() { - for_each(FunctionList.begin(), FunctionList.end(), - std::mem_fun(&Function::dropAllReferences)); - - for_each(GlobalList.begin(), GlobalList.end(), - std::mem_fun(&GlobalVariable::dropAllReferences)); - - // If there are any GlobalVariable references still out there, nuke them now. - // Since all references are hereby dropped, nothing could possibly reference - // them still. - if (GVRefMap) { - for (GlobalValueRefMap::iterator I = GVRefMap->begin(), E = GVRefMap->end(); - I != E; ++I) { - // Delete the ConstantPointerRef node... - I->second->destroyConstant(); +/// Target Pointer Size information... +Module::PointerSize Module::getPointerSize() const { + std::string 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()); + if (size == 32) + ret = Pointer32; + else if (size == 64) + ret = Pointer64; } + } + + return ret; +} - // Since the table is empty, we can now delete it... - delete GVRefMap; +//===----------------------------------------------------------------------===// +// 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(const std::string &Name, + const FunctionType *Ty, + AttrListPtr AttributeList) { + ValueSymbolTable &SymTab = getValueSymbolTable(); + + // See if we have a definition for the specified function already. + GlobalValue *F = dyn_cast_or_null(SymTab.lookup(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[0], Name.size()); + 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(const std::string &Name, + const FunctionType *Ty, + AttrListPtr AttributeList) { + ValueSymbolTable &SymTab = getValueSymbolTable(); + + // See if we have a definition for the specified function already. + GlobalValue *F = dyn_cast_or_null(SymTab.lookup(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(const std::string &Name, + const FunctionType *Ty) { + AttrListPtr AttributeList = AttrListPtr::get((AttributeWithIndex *)0, 0); + return getOrInsertFunction(Name, Ty, AttributeList); } -// reduceApply - Apply the specified function to all of the methods in this -// module. The result values are or'd together and the result is returned. +// 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. // -bool Module::reduceApply(bool (*Func)(GlobalVariable*)) { - return reduce_apply_bool(gbegin(), gend(), Func); +Constant *Module::getOrInsertFunction(const std::string &Name, + AttrListPtr AttributeList, + const Type *RetTy, ...) { + va_list Args; + va_start(Args, RetTy); + + // Build the list of argument types... + std::vector ArgTys; + while (const Type *ArgTy = va_arg(Args, const 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); } -bool Module::reduceApply(bool (*Func)(const GlobalVariable*)) const { - return reduce_apply_bool(gbegin(), gend(), Func); + +Constant *Module::getOrInsertFunction(const std::string &Name, + const Type *RetTy, ...) { + va_list Args; + va_start(Args, RetTy); + + // Build the list of argument types... + std::vector ArgTys; + while (const Type *ArgTy = va_arg(Args, const 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::get((AttributeWithIndex *)0, 0)); } -bool Module::reduceApply(bool (*Func)(Function*)) { - return reduce_apply_bool(begin(), end(), Func); + +// 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(SymTab.lookup(Name)); +} + +Function *Module::getFunction(const char *Name) const { + const ValueSymbolTable &SymTab = getValueSymbolTable(); + return dyn_cast_or_null(SymTab.lookup(Name, Name+strlen(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(const std::string &Name, + bool AllowLocal) const { + if (Value *V = ValSymTab->lookup(Name)) { + GlobalVariable *Result = dyn_cast(V); + if (Result && (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(const std::string &Name, const Type *Ty) { + ValueSymbolTable &SymTab = getValueSymbolTable(); + + // See if we have a definition for the specified global already. + GlobalVariable *GV = dyn_cast_or_null(SymTab.lookup(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. + } + + // 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(SymTab.lookup(Name)); +} + +//===----------------------------------------------------------------------===// +// Methods for easy access to the types in the module. +// + + +// 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(); + + 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); + + return false; } -bool Module::reduceApply(bool (*Func)(const Function*)) const { - return reduce_apply_bool(begin(), end(), Func); + +/// 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(ST.lookup(Name)); } -// Accessor for the underlying GlobalValRefMap... -ConstantPointerRef *Module::getConstantPointerRef(GlobalValue *V){ - // Create ref map lazily on demand... - if (GVRefMap == 0) GVRefMap = new GlobalValueRefMap(); +// 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(); - GlobalValueRefMap::iterator I = GVRefMap->find(V); - if (I != GVRefMap->end()) return I->second; + TypeSymbolTable::const_iterator TI = ST.begin(); + TypeSymbolTable::const_iterator TE = ST.end(); + if ( TI == TE ) return ""; // No names for types - ConstantPointerRef *Ref = new ConstantPointerRef(V); - GVRefMap->insert(std::make_pair(V, Ref)); + while (TI != TE && TI->second != Ty) + ++TI; - return Ref; + if (TI != TE) // Must have found an entry! + return TI->first; + return ""; // Must not have found anything... } -void Module::mutateConstantPointerRef(GlobalValue *OldGV, GlobalValue *NewGV) { - GlobalValueRefMap::iterator I = GVRefMap->find(OldGV); - assert(I != GVRefMap->end() && - "mutateConstantPointerRef; OldGV not in table!"); - ConstantPointerRef *Ref = I->second; +//===----------------------------------------------------------------------===// +// Other module related stuff. +// + + +// dropAllReferences() - This function causes all the subelementss 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(); - // Remove the old entry... - GVRefMap->erase(I); + for(Module::global_iterator I = global_begin(), E = global_end(); I != E; ++I) + I->dropAllReferences(); - // Insert the new entry... - GVRefMap->insert(std::make_pair(NewGV, Ref)); + for(Module::alias_iterator I = alias_begin(), E = alias_end(); I != E; ++I) + I->dropAllReferences(); +} + +void Module::addLibrary(const std::string& 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) { + LibraryListType::iterator I = LibraryList.begin(); + LibraryListType::iterator E = LibraryList.end(); + for (;I != E; ++I) + if (*I == Lib) { + LibraryList.erase(I); + return; + } }