//===-- 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/InstrTypes.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
-#include "Support/STLExtras.h"
-#include "Support/LeakDetector.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 <iostream>
+#include <cstdlib>
#include <map>
using namespace llvm;
// Methods to implement the globals and functions lists.
//
-Function *ilist_traits<Function>::createNode() {
+Function *ilist_traits<Function>::createSentinel() {
FunctionType *FTy =
FunctionType::get(Type::VoidTy, std::vector<const Type*>(), false);
Function *Ret = new Function(FTy, GlobalValue::ExternalLinkage);
LeakDetector::removeGarbageObject(Ret);
return Ret;
}
-GlobalVariable *ilist_traits<GlobalVariable>::createNode() {
- GlobalVariable *Ret = new GlobalVariable(Type::IntTy, false,
+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;
}
+GlobalAlias *ilist_traits<GlobalAlias>::createSentinel() {
+ GlobalAlias *Ret = new GlobalAlias(Type::Int32Ty, 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();
}
+iplist<GlobalAlias> &ilist_traits<GlobalAlias>::getList(Module *M) {
+ return M->getAliasList();
+}
// 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>;
+// are not in the public header file.
+template class SymbolTableListTraits<GlobalVariable, Module>;
+template class SymbolTableListTraits<Function, Module>;
+template class SymbolTableListTraits<GlobalAlias, Module>;
//===----------------------------------------------------------------------===//
// Primitive Module methods.
//
Module::Module(const std::string &MID)
- : ModuleID(MID), Endian(AnyEndianness), PtrSize(AnyPointerSize) {
- FunctionList.setItemParent(this);
- FunctionList.setParent(this);
- GlobalList.setItemParent(this);
- GlobalList.setParent(this);
- SymTab = new SymbolTable();
+ : ModuleID(MID), DataLayout("") {
+ ValSymTab = new ValueSymbolTable();
+ TypeSymTab = new TypeSymbolTable();
}
Module::~Module() {
dropAllReferences();
GlobalList.clear();
- GlobalList.setParent(0);
FunctionList.clear();
- FunctionList.setParent(0);
+ AliasList.clear();
LibraryList.clear();
- delete SymTab;
+ delete ValSymTab;
+ delete TypeSymTab;
}
// Module::dump() - Allow printing from debugger
void Module::dump() const {
- print(std::cerr);
+ print(*cerr.stream());
+}
+
+/// 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;
+}
+
+/// 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;
}
//===----------------------------------------------------------------------===//
// 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,
+Constant *Module::getOrInsertFunction(const std::string &Name,
const FunctionType *Ty) {
- SymbolTable &SymTab = getSymbolTable();
+ ValueSymbolTable &SymTab = getValueSymbolTable();
- // 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
+ // See if we have a definition for the specified function already.
+ GlobalValue *F = dyn_cast_or_null<GlobalValue>(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...
+ 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->getType() != PointerType::get(Ty))
+ return ConstantExpr::getBitCast(F, PointerType::get(Ty));
+
+ // Otherwise, we just found the existing function or a prototype.
+ return F;
}
// getOrInsertFunction - Look up the specified function in the module symbol
// This version of the method takes a null terminated list of function
// arguments, which makes it easier for clients to use.
//
-Function *Module::getOrInsertFunction(const std::string &Name,
+Constant *Module::getOrInsertFunction(const std::string &Name,
const Type *RetTy, ...) {
va_list Args;
va_start(Args, RetTy);
// 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();
- return cast_or_null<Function>(SymTab.lookup(PointerType::get(Ty), Name));
-}
-
-
-/// getMainFunction - This function looks up main efficiently. This is such a
-/// common case, that it is a method in Module. If main cannot be found, a
-/// null pointer is returned.
-///
-Function *Module::getMainFunction() {
- std::vector<const Type*> Params;
-
- // int main(void)...
- if (Function *F = getFunction("main", FunctionType::get(Type::IntTy,
- Params, false)))
- return F;
-
- // void main(void)...
- if (Function *F = getFunction("main", FunctionType::get(Type::VoidTy,
- Params, false)))
- return F;
-
- Params.push_back(Type::IntTy);
-
- // int main(int argc)...
- if (Function *F = getFunction("main", FunctionType::get(Type::IntTy,
- Params, false)))
- return F;
-
- // void main(int argc)...
- if (Function *F = getFunction("main", FunctionType::get(Type::VoidTy,
- Params, false)))
- return F;
-
- for (unsigned i = 0; i != 2; ++i) { // Check argv and envp
- Params.push_back(PointerType::get(PointerType::get(Type::SByteTy)));
-
- // int main(int argc, char **argv)...
- if (Function *F = getFunction("main", FunctionType::get(Type::IntTy,
- Params, false)))
- return F;
-
- // void main(int argc, char **argv)...
- if (Function *F = getFunction("main", FunctionType::get(Type::VoidTy,
- Params, false)))
- return F;
- }
-
- // Ok, try to find main the hard way...
- return getNamedFunction("main");
-}
-
-/// getNamedFunction - Return the first function in the module with the
-/// specified name, of arbitrary type. This method returns null if a function
-/// with the specified name is not found.
-///
-Function *Module::getNamedFunction(const std::string &Name) {
- // Loop over all of the functions, looking for the function desired
- Function *Found = 0;
- for (iterator I = begin(), E = end(); I != E; ++I)
- if (I->getName() == Name)
- if (I->isExternal())
- Found = I;
- else
- return I;
- return Found; // Non-external function not found...
+Function *Module::getFunction(const std::string &Name) const {
+ const ValueSymbolTable &SymTab = getValueSymbolTable();
+ return dyn_cast_or_null<Function>(SymTab.lookup(Name));
}
//===----------------------------------------------------------------------===//
//
/// getGlobalVariable - Look up the specified global variable in the module
-/// symbol table. If it does not exist, return null. Note that this only
-/// returns a global variable if it does not have internal linkage. The type
-/// argument should be the underlying type of the global, ie, it should not
-/// have the top-level PointerType, which represents the address of the
-/// global.
+/// 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,
- const Type *Ty) {
- if (Value *V = getSymbolTable().lookup(PointerType::get(Ty), Name)) {
- GlobalVariable *Result = cast<GlobalVariable>(V);
- if (!Result->hasInternalLinkage())
+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 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<GlobalAlias>(SymTab.lookup(Name));
+}
//===----------------------------------------------------------------------===//
// Methods for easy access to the types in the module.
// table is not modified.
//
bool Module::addTypeName(const std::string &Name, const Type *Ty) {
- SymbolTable &ST = getSymbolTable();
+ TypeSymbolTable &ST = getTypeSymbolTable();
+
+ if (ST.lookup(Name)) return true; // Already in symtab...
- if (ST.lookupType(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);
/// 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 SymbolTable &ST = getSymbolTable();
- return cast_or_null<Type>(ST.lookupType(Name));
+ const TypeSymbolTable &ST = getTypeSymbolTable();
+ return cast_or_null<Type>(ST.lookup(Name));
}
// 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 SymbolTable &ST = getSymbolTable();
+ const TypeSymbolTable &ST = getTypeSymbolTable();
- SymbolTable::type_const_iterator TI = ST.type_begin();
- SymbolTable::type_const_iterator TE = ST.type_end();
+ TypeSymbolTable::const_iterator TI = ST.begin();
+ TypeSymbolTable::const_iterator TE = ST.end();
if ( TI == TE ) return ""; // No names for types
while (TI != TE && TI->second != Ty)
return ""; // Must not have found anything...
}
-
//===----------------------------------------------------------------------===//
// Other module related stuff.
//
for(Module::iterator I = begin(), E = end(); I != E; ++I)
I->dropAllReferences();
- for(Module::giterator I = gbegin(), E = gend(); I != E; ++I)
+ 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(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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