#include "llvm/InstrTypes.h"
#include "llvm/SymbolTable.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/Constant.h"
+#include "Support/LeakDetector.h"
#include <algorithm>
//===----------------------------------------------------------------------===//
}
#endif
assert(Uses.begin() == Uses.end());
+
+ // There should be no uses of this object anymore, remove it.
+ LeakDetector::removeGarbageObject(this);
}
-void Value::replaceAllUsesWith(Value *D) {
- assert(D && "Value::replaceAllUsesWith(<null>) is invalid!");
- assert(D != this && "V->replaceAllUsesWith(V) is NOT valid!");
- assert(D->getType() == getType() &&
+
+
+
+void Value::replaceAllUsesWith(Value *New) {
+ assert(New && "Value::replaceAllUsesWith(<null>) is invalid!");
+ assert(New != this && "this->replaceAllUsesWith(this) is NOT valid!");
+ assert(New->getType() == getType() &&
"replaceAllUses of value with new value of different type!");
while (!Uses.empty()) {
User *Use = Uses.back();
-#ifndef NDEBUG
- unsigned NumUses = Uses.size();
-#endif
- Use->replaceUsesOfWith(this, D);
-
-#ifndef NDEBUG // only in -g mode...
- if (Uses.size() == NumUses)
- std::cerr << "Use: " << *Use << "replace with: " << *D;
-#endif
- assert(Uses.size() != NumUses && "Didn't remove definition!");
+ // Must handle Constants specially, we cannot call replaceUsesOfWith on a
+ // constant!
+ if (Constant *C = dyn_cast<Constant>(Use)) {
+ C->replaceUsesOfWithOnConstant(this, New);
+ } else {
+ Use->replaceUsesOfWith(this, New);
+ }
}
}
Ty = NewTy;
}
-void Value::killUse(User *i) {
- if (i == 0) return;
- use_iterator I = find(Uses.begin(), Uses.end(), i);
+void Value::killUse(User *U) {
+ if (U == 0) return;
+ unsigned i;
- assert(I != Uses.end() && "Use not in uses list!!");
- Uses.erase(I);
-}
+ // Scan backwards through the uses list looking for the user. We do this
+ // because vectors like to be accessed on the end. This is incredibly
+ // important from a performance perspective.
+ for (i = Uses.size()-1; Uses[i] != U; --i)
+ /* empty */;
-User *Value::use_remove(use_iterator &I) {
- assert(I != Uses.end() && "Trying to remove the end of the use list!!!");
- User *i = *I;
- I = Uses.erase(I);
- return i;
+ assert(i < Uses.size() && "Use not in uses list!!");
+ Uses[i] = Uses.back();
+ Uses.pop_back();
}
//===----------------------------------------------------------------------===//
void User::replaceUsesOfWith(Value *From, Value *To) {
if (From == To) return; // Duh what?
+ assert(!isa<Constant>(this) &&
+ "Cannot call User::replaceUsesofWith on a constant!");
+
for (unsigned i = 0, E = getNumOperands(); i != E; ++i)
if (getOperand(i) == From) { // Is This operand is pointing to oldval?
// The side effects of this setOperand call include linking to
setOperand(i, To); // Fix it now...
}
}
-
-