//
//===----------------------------------------------------------------------===//
-#include "llvm/ValueHolderImpl.h"
-#include "llvm/InstrTypes.h"
-#include "llvm/BasicBlock.h"
-#include "llvm/Method.h"
#include "llvm/Module.h"
+#include "llvm/Function.h"
+#include "llvm/GlobalVariable.h"
+#include "llvm/InstrTypes.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "Support/STLExtras.h"
+#include "SymbolTableListTraitsImpl.h"
+#include <algorithm>
+#include <map>
+
+Function *ilist_traits<Function>::createNode() {
+ return new Function(FunctionType::get(Type::VoidTy,std::vector<const Type*>(),
+ false), false);
+}
+GlobalVariable *ilist_traits<GlobalVariable>::createNode() {
+ return new GlobalVariable(Type::IntTy, false, false);
+}
+
+iplist<Function> &ilist_traits<Function>::getList(Module *M) {
+ return M->getFunctionList();
+}
+iplist<GlobalVariable> &ilist_traits<GlobalVariable>::getList(Module *M) {
+ return M->getGlobalList();
+}
+
+// Explicit instantiations of SymbolTableListTraits since some of the methods
+// are not in the public header file...
+template SymbolTableListTraits<GlobalVariable, Module, Module>;
+template SymbolTableListTraits<Function, Module, Module>;
-// Instantiate Templates - This ugliness is the price we have to pay
-// for having a DefHolderImpl.h file seperate from DefHolder.h! :(
+// Define the GlobalValueRefMap as a struct that wraps a map so that we don't
+// have Module.h depend on <map>
//
-template class ValueHolder<Method, Module>;
+struct GlobalValueRefMap : public std::map<GlobalValue*, ConstantPointerRef*>{
+};
-Module::Module()
- : SymTabValue(0/*TODO: REAL TYPE*/, Value::ModuleVal, ""),
- MethodList(this, this) {
+
+Module::Module() {
+ FunctionList.setItemParent(this);
+ FunctionList.setParent(this);
+ GlobalList.setItemParent(this);
+ GlobalList.setParent(this);
+ GVRefMap = 0;
+ SymTab = 0;
}
Module::~Module() {
dropAllReferences();
- MethodList.delete_all();
- MethodList.setParent(0);
+ GlobalList.clear();
+ GlobalList.setParent(0);
+ FunctionList.clear();
+ FunctionList.setParent(0);
+ delete SymTab;
+}
+
+SymbolTable *Module::getSymbolTableSure() {
+ if (!SymTab) SymTab = new SymbolTable(0);
+ return SymTab;
+}
+
+// hasSymbolTable() - Returns true if there is a symbol table allocated to
+// this object AND if there is at least one name in it!
+//
+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;
+}
+
+
+// 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<Function>(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...
+ }
+}
+
+// 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 FunctionType *Ty) {
+ SymbolTable *SymTab = getSymbolTable();
+ if (SymTab == 0) return 0; // No symtab, no symbols...
+
+ return cast_or_null<Function>(SymTab->lookup(PointerType::get(Ty), Name));
+}
+
+// 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;
+}
+
+// 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...
}
// delete.
//
void Module::dropAllReferences() {
- MethodListType::iterator MI = MethodList.begin();
- for (; MI != MethodList.end(); MI++)
- (*MI)->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.
+ 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;
+ }
+}
+
+// Accessor for the underlying GlobalValRefMap...
+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;
+
+ ConstantPointerRef *Ref = new ConstantPointerRef(V);
+ GVRefMap->insert(std::make_pair(V, Ref));
+
+ return Ref;
+}
+
+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;
+
+ // Remove the old entry...
+ GVRefMap->erase(I);
+
+ // Insert the new entry...
+ GVRefMap->insert(std::make_pair(NewGV, Ref));
}
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