-//===-- Module.cpp - Implement the Module class ------------------*- C++ -*--=//
+//===-- Module.cpp - Implement the Module class ---------------------------===//
+//
+// 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 implements the Module class for the VMCore library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Module.h"
-#include "llvm/Method.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/BasicBlock.h"
#include "llvm/InstrTypes.h"
-#include "llvm/ValueHolderImpl.h"
-#include "llvm/Support/STLExtras.h"
-#include "llvm/Type.h"
+#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 <algorithm>
+#include <cstdarg>
+#include <cstdlib>
#include <map>
+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<GlobalVariable, Module, Module>;
-template class ValueHolder<Method, Module, Module>;
-// Define the GlobalValueRefMap as a struct that wraps a map so that we don't
-// have Module.h depend on <map>
-//
-struct GlobalValueRefMap : public map<GlobalValue*, ConstPoolPointerReference*>{
-};
+Function *ilist_traits<Function>::createSentinel() {
+ FunctionType *FTy =
+ FunctionType::get(Type::VoidTy, std::vector<const Type*>(), false,
+ std::vector<FunctionType::ParameterAttributes>() );
+ 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;
+}
+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 class SymbolTableListTraits<GlobalVariable, Module, Module>;
+template class SymbolTableListTraits<Function, Module, Module>;
+
+//===----------------------------------------------------------------------===//
+// Primitive Module methods.
+//
-Module::Module()
- : Value(Type::VoidTy, Value::ModuleVal, ""), SymTabValue(this),
- GlobalList(this, this), MethodList(this, this), GVRefMap(0) {
+Module::Module(const std::string &MID)
+ : ModuleID(MID), DataLayout("") {
+ FunctionList.setItemParent(this);
+ FunctionList.setParent(this);
+ GlobalList.setItemParent(this);
+ GlobalList.setParent(this);
+ ValSymTab = new ValueSymbolTable();
+ TypeSymTab = new TypeSymbolTable();
}
Module::~Module() {
dropAllReferences();
- GlobalList.delete_all();
+ GlobalList.clear();
GlobalList.setParent(0);
- MethodList.delete_all();
- MethodList.setParent(0);
+ FunctionList.clear();
+ FunctionList.setParent(0);
+ LibraryList.clear();
+ delete ValSymTab;
+ delete TypeSymTab;
}
+// Module::dump() - Allow printing from debugger
+void Module::dump() const {
+ print(*cerr.stream());
+}
-// 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(MethodList.begin(), MethodList.end(),
- std::mem_fun(&Method::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 ConstPoolPointerReference node...
- I->second->destroyConstant();
+/// 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;
+}
- // Since the table is empty, we can now delete it...
- delete GVRefMap;
+/// 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;
}
-// 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.
+//===----------------------------------------------------------------------===//
+// 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.
//
-bool Module::reduceApply(bool (*Func)(GlobalVariable*)) {
- return reduce_apply_bool(gbegin(), gend(), Func);
+Constant *Module::getOrInsertFunction(const std::string &Name,
+ const FunctionType *Ty) {
+ ValueSymbolTable &SymTab = getValueSymbolTable();
+
+ // See if we have a definition for the specified function already.
+ Function *F = dyn_cast_or_null<Function>(SymTab.lookup(Name));
+ if (F == 0) {
+ // Nope, add it
+ Function *New = new Function(Ty, GlobalVariable::ExternalLinkage, Name);
+ 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()));
+ // Retry, now there won't be a conflict.
+ return getOrInsertFunction(Name, Ty);
+ }
+
+ // If the function exists but has the wrong type, return a bitcast to the
+ // right type.
+ if (F->getFunctionType() != Ty)
+ return ConstantExpr::getBitCast(F, PointerType::get(Ty));
+
+ // Otherwise, we just found the existing function or a prototype.
+ return F;
}
-bool Module::reduceApply(bool (*Func)(const GlobalVariable*)) const {
- return reduce_apply_bool(gbegin(), gend(), Func);
+
+// 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(const std::string &Name,
+ const 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*))
+ 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));
}
-bool Module::reduceApply(bool (*Func)(Method*)) {
- 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<Function>(SymTab.lookup(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 AllowInternal is set to true, this function will return types that
+/// have InternalLinkage. 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()))
+ return Result;
+ }
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// 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 Method*)) 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<Type>(ST.lookup(Name));
}
-// Accessor for the underlying GlobalValRefMap...
-ConstPoolPointerReference *Module::getConstPoolPointerReference(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
- ConstPoolPointerReference *Ref = new ConstPoolPointerReference(V);
- GVRefMap->insert(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::mutateConstPoolPointerReference(GlobalValue *OldGV,
- GlobalValue *NewGV) {
- GlobalValueRefMap::iterator I = GVRefMap->find(OldGV);
- assert(I != GVRefMap->end() &&
- "mutateConstPoolPointerReference; OldGV not in table!");
- ConstPoolPointerReference *Ref = I->second;
+//===----------------------------------------------------------------------===//
+// Other module related stuff.
+//
+
- // Remove the old entry...
- GVRefMap->erase(I);
+// 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();
+
+ for(Module::global_iterator I = global_begin(), E = global_end(); I != E; ++I)
+ I->dropAllReferences();
+}
- // Insert the new entry...
- GVRefMap->insert(make_pair(NewGV, Ref));
+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;
+ }
+}
+
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