//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/InstrTypes.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/LLVMContext.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 <iostream>
-#include <map>
using namespace llvm;
//===----------------------------------------------------------------------===//
// Methods to implement the globals and functions lists.
//
-Function *ilist_traits<Function>::createSentinel() {
- FunctionType *FTy =
- FunctionType::get(Type::VoidTy, std::vector<const Type*>(), false);
- Function *Ret = new Function(FTy, GlobalValue::ExternalLinkage);
+GlobalVariable *ilist_traits<GlobalVariable>::createSentinel() {
+ GlobalVariable *Ret = new GlobalVariable(getGlobalContext(), Type::Int32Ty,
+ false, GlobalValue::ExternalLinkage);
// This should not be garbage monitored.
LeakDetector::removeGarbageObject(Ret);
return Ret;
}
-GlobalVariable *ilist_traits<GlobalVariable>::createSentinel() {
- GlobalVariable *Ret = new GlobalVariable(Type::IntTy, false,
- GlobalValue::ExternalLinkage);
+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();
-}
-
// 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>;
+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), DataLayout("") {
- FunctionList.setItemParent(this);
- FunctionList.setParent(this);
- GlobalList.setItemParent(this);
- GlobalList.setParent(this);
- SymTab = new SymbolTable();
+Module::Module(const StringRef &MID, LLVMContext& C)
+ : Context(C), 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;
-}
-
-// Module::dump() - Allow printing from debugger
-void Module::dump() const {
- print(std::cerr);
+ delete ValSymTab;
+ delete TypeSymTab;
}
/// Target endian information...
return ret;
}
-void Module::setEndianness(Endianness E) {
- if (!DataLayout.empty() && E != AnyEndianness)
- DataLayout += "-";
-
- if (E == LittleEndian)
- DataLayout += "e";
- else if (E == BigEndian)
- DataLayout += "E";
-}
-
/// Target Pointer Size information...
Module::PointerSize Module::getPointerSize() const {
std::string temp = DataLayout;
return ret;
}
-void Module::setPointerSize(PointerSize PS) {
- if (!DataLayout.empty() && PS != AnyPointerSize)
- DataLayout += "-";
-
- if (PS == Pointer32)
- DataLayout += "p:32:32";
- else if (PS == Pointer64)
- DataLayout += "p:64:64";
+/// getNamedValue - Return the first global value in the module with
+/// the specified name, of arbitrary type. This method returns null
+/// if a global with the specified name is not found.
+GlobalValue *Module::getNamedValue(const StringRef &Name) const {
+ return cast_or_null<GlobalValue>(getValueSymbolTable().lookup(Name));
}
//===----------------------------------------------------------------------===//
// 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 = getSymbolTable();
+Constant *Module::getOrInsertFunction(const StringRef &Name,
+ const FunctionType *Ty,
+ AttrListPtr AttributeList) {
+ // See if we have a definition for the specified function already.
+ GlobalValue *F = getNamedValue(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);
+ return NewF;
+ }
- // 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, GlobalVariable::ExternalLinkage, Name);
+ // If the function exists but has the wrong type, return a bitcast to the
+ // right type.
+ if (F->getType() != Context.getPointerTypeUnqual(Ty))
+ return Context.getConstantExprBitCast(F, Context.getPointerTypeUnqual(Ty));
+
+ // Otherwise, we just found the existing function or a prototype.
+ return F;
+}
+
+Constant *Module::getOrInsertTargetIntrinsic(const StringRef &Name,
+ const FunctionType *Ty,
+ AttrListPtr AttributeList) {
+ // See if we have a definition for the specified function already.
+ GlobalValue *F = getNamedValue(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...
+ return New; // Return the new prototype.
}
+
+ // Otherwise, we just found the existing function or a prototype.
+ return F;
+}
+
+Constant *Module::getOrInsertFunction(const StringRef &Name,
+ const FunctionType *Ty) {
+ AttrListPtr AttributeList = AttrListPtr::get((AttributeWithIndex *)0, 0);
+ return getOrInsertFunction(Name, Ty, AttributeList);
}
// 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 StringRef &Name,
+ AttrListPtr AttributeList,
const Type *RetTy, ...) {
va_list Args;
va_start(Args, RetTy);
va_end(Args);
// Build the function type and chain to the other getOrInsertFunction...
- return getOrInsertFunction(Name, FunctionType::get(RetTy, ArgTys, false));
+ return getOrInsertFunction(Name,
+ Context.getFunctionType(RetTy, ArgTys, false),
+ AttributeList);
}
+Constant *Module::getOrInsertFunction(const StringRef &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));
-}
-
+ // Build the list of argument types...
+ std::vector<const Type*> ArgTys;
+ while (const Type *ArgTy = va_arg(Args, const Type*))
+ ArgTys.push_back(ArgTy);
-/// 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;
- }
+ va_end(Args);
- // Ok, try to find main the hard way...
- return getNamedFunction("main");
+ // Build the function type and chain to the other getOrInsertFunction...
+ return getOrInsertFunction(Name,
+ Context.getFunctionType(RetTy, ArgTys, false),
+ AttrListPtr::get((AttributeWithIndex *)0, 0));
}
-/// 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) const {
- // Loop over all of the functions, looking for the function desired
- const Function *Found = 0;
- for (const_iterator I = begin(), E = end(); I != E; ++I)
- if (I->getName() == Name)
- if (I->isExternal())
- Found = I;
- else
- return const_cast<Function*>(&(*I));
- return const_cast<Function*>(Found); // Non-external function not found...
+// getFunction - Look up the specified function in the module symbol table.
+// If it does not exist, return null.
+//
+Function *Module::getFunction(const StringRef &Name) const {
+ return dyn_cast_or_null<Function>(getNamedValue(Name));
}
//===----------------------------------------------------------------------===//
/// 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.
+/// 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,
- const Type *Ty, bool AllowInternal) {
- if (Value *V = getSymbolTable().lookup(PointerType::get(Ty), Name)) {
- GlobalVariable *Result = cast<GlobalVariable>(V);
- if (AllowInternal || !Result->hasInternalLinkage())
+GlobalVariable *Module::getGlobalVariable(const StringRef &Name,
+ bool AllowLocal) const {
+ if (GlobalVariable *Result =
+ dyn_cast_or_null<GlobalVariable>(getNamedValue(Name)))
+ if (AllowLocal || !Result->hasLocalLinkage())
return Result;
- }
return 0;
}
-/// getNamedGlobal - Return the first global variable in the module with the
-/// specified name, of arbitrary type. This method returns null if a global
-/// with the specified name is not found.
-///
-GlobalVariable *Module::getNamedGlobal(const std::string &Name) const {
- // FIXME: This would be much faster with a symbol table that doesn't
- // discriminate based on type!
- for (const_global_iterator I = global_begin(), E = global_end();
- I != E; ++I)
- if (I->getName() == Name)
- return const_cast<GlobalVariable*>(&(*I));
- 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 StringRef &Name, const Type *Ty) {
+ // See if we have a definition for the specified global already.
+ GlobalVariable *GV = dyn_cast_or_null<GlobalVariable>(getNamedValue(Name));
+ if (GV == 0) {
+ // Nope, add it
+ GlobalVariable *New =
+ new GlobalVariable(*this, Ty, false, GlobalVariable::ExternalLinkage,
+ 0, Name);
+ 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() != Context.getPointerTypeUnqual(Ty))
+ return Context.getConstantExprBitCast(GV, Context.getPointerTypeUnqual(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 StringRef &Name) const {
+ return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name));
+}
//===----------------------------------------------------------------------===//
// Methods for easy access to the types in the module.
// 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 = getSymbolTable();
+bool Module::addTypeName(const StringRef &Name, const Type *Ty) {
+ TypeSymbolTable &ST = getTypeSymbolTable();
- if (ST.lookupType(Name)) return true; // Already in symtab...
+ 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...
/// 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 Type *Module::getTypeByName(const StringRef &Name) const {
+ 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)
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 StringRef& 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 StringRef& Lib) {
+ LibraryListType::iterator I = LibraryList.begin();
+ LibraryListType::iterator E = LibraryList.end();
+ for (;I != E; ++I)
+ if (*I == Lib) {
+ LibraryList.erase(I);
+ return;
+ }
+}