mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
c7dd9d3840
modules are instantiated in them. If the context is deleted, all of its owned modules are also deleted. llvm-svn: 113374
474 lines
16 KiB
C++
474 lines
16 KiB
C++
//===-- Module.cpp - Implement the Module class ---------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file 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/InstrTypes.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include "llvm/GVMaterializer.h"
|
|
#include "llvm/LLVMContext.h"
|
|
#include "llvm/ADT/SmallString.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>
|
|
using namespace llvm;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Methods to implement the globals and functions lists.
|
|
//
|
|
|
|
GlobalVariable *ilist_traits<GlobalVariable>::createSentinel() {
|
|
GlobalVariable *Ret = new GlobalVariable(Type::getInt32Ty(getGlobalContext()),
|
|
false, GlobalValue::ExternalLinkage);
|
|
// This should not be garbage monitored.
|
|
LeakDetector::removeGarbageObject(Ret);
|
|
return Ret;
|
|
}
|
|
GlobalAlias *ilist_traits<GlobalAlias>::createSentinel() {
|
|
GlobalAlias *Ret = new GlobalAlias(Type::getInt32Ty(getGlobalContext()),
|
|
GlobalValue::ExternalLinkage);
|
|
// This should not be garbage monitored.
|
|
LeakDetector::removeGarbageObject(Ret);
|
|
return Ret;
|
|
}
|
|
|
|
// Explicit instantiations of SymbolTableListTraits since some of the methods
|
|
// are not in the public header file.
|
|
template class llvm::SymbolTableListTraits<GlobalVariable, Module>;
|
|
template class llvm::SymbolTableListTraits<Function, Module>;
|
|
template class llvm::SymbolTableListTraits<GlobalAlias, Module>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Primitive Module methods.
|
|
//
|
|
|
|
Module::Module(StringRef MID, LLVMContext& C)
|
|
: Context(C), Materializer(NULL), ModuleID(MID) {
|
|
ValSymTab = new ValueSymbolTable();
|
|
TypeSymTab = new TypeSymbolTable();
|
|
NamedMDSymTab = new StringMap<NamedMDNode *>();
|
|
Context.addModule(this);
|
|
}
|
|
|
|
Module::~Module() {
|
|
Context.removeModule(this);
|
|
dropAllReferences();
|
|
GlobalList.clear();
|
|
FunctionList.clear();
|
|
AliasList.clear();
|
|
LibraryList.clear();
|
|
NamedMDList.clear();
|
|
delete ValSymTab;
|
|
delete TypeSymTab;
|
|
delete static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab);
|
|
}
|
|
|
|
/// Target endian information...
|
|
Module::Endianness Module::getEndianness() const {
|
|
StringRef temp = DataLayout;
|
|
Module::Endianness ret = AnyEndianness;
|
|
|
|
while (!temp.empty()) {
|
|
StringRef token = DataLayout;
|
|
tie(token, temp) = 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 {
|
|
StringRef temp = DataLayout;
|
|
Module::PointerSize ret = AnyPointerSize;
|
|
|
|
while (!temp.empty()) {
|
|
StringRef token, signalToken;
|
|
tie(token, temp) = getToken(temp, "-");
|
|
tie(signalToken, token) = getToken(token, ":");
|
|
|
|
if (signalToken[0] == 'p') {
|
|
int size = 0;
|
|
getToken(token, ":").first.getAsInteger(10, size);
|
|
if (size == 32)
|
|
ret = Pointer32;
|
|
else if (size == 64)
|
|
ret = Pointer64;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/// 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(StringRef Name) const {
|
|
return cast_or_null<GlobalValue>(getValueSymbolTable().lookup(Name));
|
|
}
|
|
|
|
/// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
|
|
/// This ID is uniqued across modules in the current LLVMContext.
|
|
unsigned Module::getMDKindID(StringRef Name) const {
|
|
return Context.getMDKindID(Name);
|
|
}
|
|
|
|
/// getMDKindNames - Populate client supplied SmallVector with the name for
|
|
/// custom metadata IDs registered in this LLVMContext. ID #0 is not used,
|
|
/// so it is filled in as an empty string.
|
|
void Module::getMDKindNames(SmallVectorImpl<StringRef> &Result) const {
|
|
return Context.getMDKindNames(Result);
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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.
|
|
//
|
|
Constant *Module::getOrInsertFunction(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;
|
|
}
|
|
|
|
// If the function exists but has the wrong type, return a bitcast to the
|
|
// right type.
|
|
if (F->getType() != PointerType::getUnqual(Ty))
|
|
return ConstantExpr::getBitCast(F, PointerType::getUnqual(Ty));
|
|
|
|
// Otherwise, we just found the existing function or a prototype.
|
|
return F;
|
|
}
|
|
|
|
Constant *Module::getOrInsertTargetIntrinsic(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.
|
|
}
|
|
|
|
// Otherwise, we just found the existing function or a prototype.
|
|
return F;
|
|
}
|
|
|
|
Constant *Module::getOrInsertFunction(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
|
|
// 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(StringRef Name,
|
|
AttrListPtr AttributeList,
|
|
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),
|
|
AttributeList);
|
|
}
|
|
|
|
Constant *Module::getOrInsertFunction(StringRef 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),
|
|
AttrListPtr::get((AttributeWithIndex *)0, 0));
|
|
}
|
|
|
|
// getFunction - Look up the specified function in the module symbol table.
|
|
// If it does not exist, return null.
|
|
//
|
|
Function *Module::getFunction(StringRef Name) const {
|
|
return dyn_cast_or_null<Function>(getNamedValue(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 AllowLocal is set to true, this function will return types that
|
|
/// have an local. By default, these types are not returned.
|
|
///
|
|
GlobalVariable *Module::getGlobalVariable(StringRef Name,
|
|
bool AllowLocal) const {
|
|
if (GlobalVariable *Result =
|
|
dyn_cast_or_null<GlobalVariable>(getNamedValue(Name)))
|
|
if (AllowLocal || !Result->hasLocalLinkage())
|
|
return Result;
|
|
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(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() != PointerType::getUnqual(Ty))
|
|
return ConstantExpr::getBitCast(GV, PointerType::getUnqual(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(StringRef Name) const {
|
|
return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name));
|
|
}
|
|
|
|
/// getNamedMetadata - Return the first NamedMDNode in the module with the
|
|
/// specified name. This method returns null if a NamedMDNode with the
|
|
/// specified name is not found.
|
|
NamedMDNode *Module::getNamedMetadata(const Twine &Name) const {
|
|
SmallString<256> NameData;
|
|
StringRef NameRef = Name.toStringRef(NameData);
|
|
return static_cast<StringMap<NamedMDNode*> *>(NamedMDSymTab)->lookup(NameRef);
|
|
}
|
|
|
|
/// getOrInsertNamedMetadata - Return the first named MDNode in the module
|
|
/// with the specified name. This method returns a new NamedMDNode if a
|
|
/// NamedMDNode with the specified name is not found.
|
|
NamedMDNode *Module::getOrInsertNamedMetadata(StringRef Name) {
|
|
NamedMDNode *&NMD =
|
|
(*static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab))[Name];
|
|
if (!NMD) {
|
|
NMD = new NamedMDNode(Name);
|
|
NMD->setParent(this);
|
|
NamedMDList.push_back(NMD);
|
|
}
|
|
return NMD;
|
|
}
|
|
|
|
void Module::eraseNamedMetadata(NamedMDNode *NMD) {
|
|
static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab)->erase(NMD->getName());
|
|
NamedMDList.erase(NMD);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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(StringRef 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;
|
|
}
|
|
|
|
/// getTypeByName - Return the type with the specified name in this module, or
|
|
/// null if there is none by that name.
|
|
const Type *Module::getTypeByName(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 TypeSymbolTable &ST = getTypeSymbolTable();
|
|
|
|
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)
|
|
++TI;
|
|
|
|
if (TI != TE) // Must have found an entry!
|
|
return TI->first;
|
|
return ""; // Must not have found anything...
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Methods to control the materialization of GlobalValues in the Module.
|
|
//
|
|
void Module::setMaterializer(GVMaterializer *GVM) {
|
|
assert(!Materializer &&
|
|
"Module already has a GVMaterializer. Call MaterializeAllPermanently"
|
|
" to clear it out before setting another one.");
|
|
Materializer.reset(GVM);
|
|
}
|
|
|
|
bool Module::isMaterializable(const GlobalValue *GV) const {
|
|
if (Materializer)
|
|
return Materializer->isMaterializable(GV);
|
|
return false;
|
|
}
|
|
|
|
bool Module::isDematerializable(const GlobalValue *GV) const {
|
|
if (Materializer)
|
|
return Materializer->isDematerializable(GV);
|
|
return false;
|
|
}
|
|
|
|
bool Module::Materialize(GlobalValue *GV, std::string *ErrInfo) {
|
|
if (Materializer)
|
|
return Materializer->Materialize(GV, ErrInfo);
|
|
return false;
|
|
}
|
|
|
|
void Module::Dematerialize(GlobalValue *GV) {
|
|
if (Materializer)
|
|
return Materializer->Dematerialize(GV);
|
|
}
|
|
|
|
bool Module::MaterializeAll(std::string *ErrInfo) {
|
|
if (!Materializer)
|
|
return false;
|
|
return Materializer->MaterializeModule(this, ErrInfo);
|
|
}
|
|
|
|
bool Module::MaterializeAllPermanently(std::string *ErrInfo) {
|
|
if (MaterializeAll(ErrInfo))
|
|
return true;
|
|
Materializer.reset();
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Other module related stuff.
|
|
//
|
|
|
|
|
|
// 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();
|
|
|
|
for(Module::alias_iterator I = alias_begin(), E = alias_end(); I != E; ++I)
|
|
I->dropAllReferences();
|
|
}
|
|
|
|
void Module::addLibrary(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(StringRef Lib) {
|
|
LibraryListType::iterator I = LibraryList.begin();
|
|
LibraryListType::iterator E = LibraryList.end();
|
|
for (;I != E; ++I)
|
|
if (*I == Lib) {
|
|
LibraryList.erase(I);
|
|
return;
|
|
}
|
|
}
|