X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FModule.cpp;h=397b5e28341d5cae70373ff37d2c2297978392d9;hb=a3bbcb5b664c1c851b87392119608901b2e1837c;hp=1b6e71725a5ed1cfd8af980c8d5d43cfd228357a;hpb=699a7bfd6b0c789e7e04c0e182d7518b34b514b0;p=oota-llvm.git diff --git a/lib/VMCore/Module.cpp b/lib/VMCore/Module.cpp index 1b6e71725a5..397b5e28341 100644 --- a/lib/VMCore/Module.cpp +++ b/lib/VMCore/Module.cpp @@ -5,86 +5,184 @@ //===----------------------------------------------------------------------===// #include "llvm/Module.h" -#include "llvm/Method.h" -#include "llvm/GlobalVariable.h" #include "llvm/InstrTypes.h" -#include "llvm/ValueHolderImpl.h" -#include "llvm/Type.h" -#include "llvm/ConstantVals.h" +#include "llvm/Constants.h" +#include "llvm/DerivedTypes.h" #include "Support/STLExtras.h" +#include "Support/LeakDetector.h" +#include "SymbolTableListTraitsImpl.h" +#include #include -// Instantiate Templates - This ugliness is the price we have to pay -// for having a DefHolderImpl.h file seperate from DefHolder.h! :( -// -template class ValueHolder; -template class ValueHolder; +Function *ilist_traits::createNode() { + FunctionType *FTy = + FunctionType::get(Type::VoidTy, std::vector(), false); + Function *Ret = new Function(FTy, false); + // This should not be garbage monitored. + LeakDetector::removeGarbageObject(Ret); + return Ret; +} +GlobalVariable *ilist_traits::createNode() { + GlobalVariable *Ret = new GlobalVariable(Type::IntTy, false, false); + // 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(); +} + +// Explicit instantiations of SymbolTableListTraits since some of the methods +// are not in the public header file... +template SymbolTableListTraits; +template SymbolTableListTraits; // 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{ +struct GlobalValueRefMap { + typedef std::map MapTy; + typedef MapTy::iterator iterator; + std::map Map; }; -Module::Module() - : Value(Type::VoidTy, Value::ModuleVal, ""), SymTabValue(this), - GlobalList(this, this), MethodList(this, this), GVRefMap(0) { +Module::Module() { + FunctionList.setItemParent(this); + FunctionList.setParent(this); + GlobalList.setItemParent(this); + GlobalList.setParent(this); + GVRefMap = 0; + SymTab = 0; } Module::~Module() { dropAllReferences(); - GlobalList.delete_all(); + GlobalList.clear(); GlobalList.setParent(0); - MethodList.delete_all(); - MethodList.setParent(0); + FunctionList.clear(); + FunctionList.setParent(0); + delete SymTab; } +// Module::dump() - Allow printing from debugger +void Module::dump() const { + print(std::cerr); +} + +SymbolTable *Module::getSymbolTableSure() { + if (!SymTab) SymTab = new SymbolTable(); + return SymTab; +} -// 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. +// hasSymbolTable() - Returns true if there is a symbol table allocated to +// this object AND if there is at least one name in it! // -void Module::dropAllReferences() { - for_each(MethodList.begin(), MethodList.end(), - std::mem_fun(&Method::dropAllReferences)); +bool Module::hasSymbolTable() const { + if (!SymTab) return false; + + for (SymbolTable::const_iterator I = SymTab->begin(), E = SymTab->end(); + I != E; ++I) + if (I->second.begin() != I->second.end()) + return true; // Found nonempty type plane! + + return false; +} - 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(); - } - - // Since the table is empty, we can now delete it... - delete GVRefMap; +// 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. +// +Function *Module::getOrInsertFunction(const std::string &Name, + const FunctionType *Ty) { + SymbolTable *SymTab = getSymbolTableSure(); + + // See if we have a definitions for the specified function already... + if (Value *V = SymTab->lookup(PointerType::get(Ty), Name)) { + return cast(V); // Yup, got it + } else { // Nope, add one + Function *New = new Function(Ty, false, Name); + FunctionList.push_back(New); + return New; // Return the new prototype... } } -// 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. +// getFunction - Look up the specified function in the module symbol table. +// If it does not exist, return null. // -bool Module::reduceApply(bool (*Func)(GlobalVariable*)) { - return reduce_apply_bool(gbegin(), gend(), Func); +Function *Module::getFunction(const std::string &Name, const FunctionType *Ty) { + SymbolTable *SymTab = getSymbolTable(); + if (SymTab == 0) return 0; // No symtab, no symbols... + + return cast_or_null(SymTab->lookup(PointerType::get(Ty), Name)); } -bool Module::reduceApply(bool (*Func)(const GlobalVariable*)) const { - return reduce_apply_bool(gbegin(), gend(), Func); + +// 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) { + SymbolTable *ST = getSymbolTableSure(); + + if (ST->lookup(Type::TypeTy, 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... + ((Value*)Ty)->setName(Name, ST); + + return false; } -bool Module::reduceApply(bool (*Func)(Method*)) { - return reduce_apply_bool(begin(), end(), Func); + +// 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 SymbolTable *ST = getSymbolTable(); + if (ST == 0) return ""; // No symbol table, must not have an entry... + if (ST->find(Type::TypeTy) == ST->end()) + return ""; // No names for types... + + SymbolTable::type_const_iterator TI = ST->type_begin(Type::TypeTy); + SymbolTable::type_const_iterator TE = ST->type_end(Type::TypeTy); + + while (TI != TE && TI->second != (const Value*)Ty) + ++TI; + + if (TI != TE) // Must have found an entry! + return TI->first; + return ""; // Must not have found anything... } -bool Module::reduceApply(bool (*Func)(const Method*)) const { - return reduce_apply_bool(begin(), end(), Func); + + +// 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 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(Module::iterator I = begin(), E = end(); I != E; ++I) + I->dropAllReferences(); + + for(Module::giterator I = gbegin(), E = gend(); I != E; ++I) + I->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. Note that destroying all of the constant pointer refs will + // eventually cause the GVRefMap field to be set to null (by + // destroyConstantPointerRef, below). + // + while (GVRefMap) + // Delete the ConstantPointerRef node... + GVRefMap->Map.begin()->second->destroyConstant(); } // Accessor for the underlying GlobalValRefMap... @@ -92,24 +190,34 @@ ConstantPointerRef *Module::getConstantPointerRef(GlobalValue *V){ // Create ref map lazily on demand... if (GVRefMap == 0) GVRefMap = new GlobalValueRefMap(); - GlobalValueRefMap::iterator I = GVRefMap->find(V); - if (I != GVRefMap->end()) return I->second; + GlobalValueRefMap::iterator I = GVRefMap->Map.find(V); + if (I != GVRefMap->Map.end()) return I->second; ConstantPointerRef *Ref = new ConstantPointerRef(V); - GVRefMap->insert(std::make_pair(V, Ref)); - + GVRefMap->Map[V] = Ref; return Ref; } +void Module::destroyConstantPointerRef(ConstantPointerRef *CPR) { + assert(GVRefMap && "No map allocated, but we have a CPR?"); + if (!GVRefMap->Map.erase(CPR->getValue())) // Remove it from the map... + assert(0 && "ConstantPointerRef not found in module CPR map!"); + + if (GVRefMap->Map.empty()) { // If the map is empty, delete it. + delete GVRefMap; + GVRefMap = 0; + } +} + void Module::mutateConstantPointerRef(GlobalValue *OldGV, GlobalValue *NewGV) { - GlobalValueRefMap::iterator I = GVRefMap->find(OldGV); - assert(I != GVRefMap->end() && + GlobalValueRefMap::iterator I = GVRefMap->Map.find(OldGV); + assert(I != GVRefMap->Map.end() && "mutateConstantPointerRef; OldGV not in table!"); ConstantPointerRef *Ref = I->second; // Remove the old entry... - GVRefMap->erase(I); + GVRefMap->Map.erase(I); // Insert the new entry... - GVRefMap->insert(std::make_pair(NewGV, Ref)); + GVRefMap->Map.insert(std::make_pair(NewGV, Ref)); }