-//===-- Globals.cpp - Implement the Global object classes -----------------===//
-//
+//===-- Globals.cpp - Implement the GlobalValue & GlobalVariable 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 GlobalValue & GlobalVariable classes for the VMCore
//
//===----------------------------------------------------------------------===//
-#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
+#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/SymbolTable.h"
#include "llvm/Support/LeakDetector.h"
// GlobalValue Class
//===----------------------------------------------------------------------===//
-/// This could be named "SafeToDestroyGlobalValue". It just makes sure that
+/// This could be named "SafeToDestroyGlobalValue". It just makes sure that
/// there are no non-constant uses of this GlobalValue. If there aren't then
/// this and the transitive closure of the constants can be deleted. See the
/// destructor for details.
while (!C->use_empty())
if (Constant *User = dyn_cast<Constant>(C->use_back())) {
- if (!removeDeadConstantUsers(User))
+ if (!removeDeadConstantUsers(User))
return false; // Constant wasn't dead
} else {
return false; // Non-constant usage;
/// 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.
///
-/// This function returns true if the global value is now dead. If all
+/// This function returns true if the global value is now dead. If all
/// users of this global are not dead, this method may return false and
/// leave some of them around.
void GlobalValue::removeDeadConstantUsers() {
}
}
-/// Override destroyConstant to make sure it doesn't get called on
+/// Override destroyConstant to make sure it doesn't get called on
/// GlobalValue's because they shouldn't be treated like other constants.
void GlobalValue::destroyConstant() {
assert(0 && "You can't GV->destroyConstant()!");
//===----------------------------------------------------------------------===//
GlobalVariable::GlobalVariable(const Type *Ty, bool constant, LinkageTypes Link,
- Constant *Initializer,
+ Constant *InitVal,
const std::string &Name, Module *ParentModule)
- : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal, Link, Name),
+ : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal,
+ &Initializer, InitVal != 0, Link, Name),
isConstantGlobal(constant) {
- if (Initializer) {
- assert(Initializer->getType() == Ty &&
+ if (InitVal) {
+ assert(InitVal->getType() == Ty &&
"Initializer should be the same type as the GlobalVariable!");
- Operands.push_back(Use((Value*)Initializer, this));
+ Initializer.init(InitVal, this);
+ } else {
+ Initializer.init(0, this);
}
LeakDetector::addGarbageObject(this);
LeakDetector::removeGarbageObject(this);
}
-// Specialize setName to take care of symbol table majik
-void GlobalVariable::setName(const std::string &name, SymbolTable *ST) {
- Module *P;
- assert((ST == 0 || (!getParent() || ST == &getParent()->getSymbolTable())) &&
- "Invalid symtab argument!");
- if ((P = getParent()) && hasName()) P->getSymbolTable().remove(this);
- Value::setName(name);
- if (P && hasName()) P->getSymbolTable().insert(this);
-}
-
void GlobalVariable::removeFromParent() {
getParent()->getGlobalList().remove(this);
}
}
void GlobalVariable::replaceUsesOfWithOnConstant(Value *From, Value *To,
- bool DisableChecking) {
+ Use *U) {
// If you call this, then you better know this GVar has a constant
// initializer worth replacing. Enforce that here.
- assert(getNumOperands() == 1 &&
+ assert(getNumOperands() == 1 &&
"Attempt to replace uses of Constants on a GVar with no initializer");
// And, since you know it has an initializer, the From value better be
// And, you better have a constant for the replacement value
assert(isa<Constant>(To) &&
"Attempt to replace GVar initializer with non-constant");
-
+
// Okay, preconditions out of the way, replace the constant initializer.
this->setOperand(0, cast<Constant>(To));
}
-
-// vim: sw=2 ai
-