#include "llvm/GlobalVariable.h"
#include "llvm/GlobalAlias.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/Support/LeakDetector.h"
/// removeDeadUsersOfConstant - If the specified constantexpr is dead, remove
/// it. This involves recursively eliminating any dead users of the
/// constantexpr.
-static bool removeDeadUsersOfConstant(Constant *C) {
+static bool removeDeadUsersOfConstant(const Constant *C) {
if (isa<GlobalValue>(C)) return false; // Cannot remove this
while (!C->use_empty()) {
- Constant *User = dyn_cast<Constant>(C->use_back());
+ const Constant *User = dyn_cast<Constant>(C->use_back());
if (!User) return false; // Non-constant usage;
if (!removeDeadUsersOfConstant(User))
return false; // Constant wasn't dead
}
- C->destroyConstant();
+ const_cast<Constant*>(C)->destroyConstant();
return true;
}
/// off of this global value, remove them. This method is useful for clients
/// that want to check to see if a global is unused, but don't want to deal
/// with potentially dead constants hanging off of the globals.
-void GlobalValue::removeDeadConstantUsers() {
- Value::use_iterator I = use_begin(), E = use_end();
- Value::use_iterator LastNonDeadUser = E;
+void GlobalValue::removeDeadConstantUsers() const {
+ Value::use_const_iterator I = use_begin(), E = use_end();
+ Value::use_const_iterator LastNonDeadUser = E;
while (I != E) {
- if (Constant *User = dyn_cast<Constant>(*I)) {
+ if (const Constant *User = dyn_cast<Constant>(*I)) {
if (!removeDeadUsersOfConstant(User)) {
// If the constant wasn't dead, remember that this was the last live use
// and move on to the next constant.
// GlobalVariable Implementation
//===----------------------------------------------------------------------===//
-GlobalVariable::GlobalVariable(const Type *Ty, bool constant, LinkageTypes Link,
+GlobalVariable::GlobalVariable(LLVMContext &Context, const Type *Ty,
+ bool constant, LinkageTypes Link,
Constant *InitVal, const std::string &Name,
Module *ParentModule, bool ThreadLocal,
unsigned AddressSpace)
- : GlobalValue(PointerType::get(Ty, AddressSpace), Value::GlobalVariableVal,
+ : GlobalValue(Context.getPointerType(Ty, AddressSpace),
+ Value::GlobalVariableVal,
OperandTraits<GlobalVariable>::op_begin(this),
InitVal != 0, Link, Name),
isConstantGlobal(constant), isThreadLocalSymbol(ThreadLocal) {
ParentModule->getGlobalList().push_back(this);
}
-GlobalVariable::GlobalVariable(const Type *Ty, bool constant, LinkageTypes Link,
+GlobalVariable::GlobalVariable(LLVMContext &Context, const Type *Ty,
+ bool constant, LinkageTypes Link,
Constant *InitVal, const std::string &Name,
GlobalVariable *Before, bool ThreadLocal,
unsigned AddressSpace)
- : GlobalValue(PointerType::get(Ty, AddressSpace), Value::GlobalVariableVal,
+ : GlobalValue(Context.getPointerType(Ty, AddressSpace),
+ Value::GlobalVariableVal,
OperandTraits<GlobalVariable>::op_begin(this),
InitVal != 0, Link, Name),
isConstantGlobal(constant), isThreadLocalSymbol(ThreadLocal) {
return 0;
}
-const GlobalValue *GlobalAlias::resolveAliasedGlobal(bool traverseWeak) const {
+const GlobalValue *GlobalAlias::resolveAliasedGlobal(bool stopOnWeak) const {
SmallPtrSet<const GlobalValue*, 3> Visited;
// Check if we need to stop early.
- if (!traverseWeak && hasWeakLinkage())
+ if (stopOnWeak && mayBeOverridden())
return this;
const GlobalValue *GV = getAliasedGlobal();
// Iterate over aliasing chain, stopping on weak alias if necessary.
while (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV)) {
- if (!traverseWeak && GA->hasWeakLinkage())
+ if (stopOnWeak && GA->mayBeOverridden())
break;
GV = GA->getAliasedGlobal();