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Updates for new use list changes.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19961 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-02-01 01:24:21 +00:00
parent 5c461404fe
commit 29d1ca6c42
1 changed files with 23 additions and 6 deletions
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29
lib/VMCore/Value.cpp
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@ -31,7 +31,7 @@ static inline const Type *checkType(const Type *Ty) {
}
Value::Value(const Type *ty, unsigned scid, const std::string &name)
: SubclassID(scid), Ty(checkType(ty)), Name(name) {
: SubclassID(scid), Ty(checkType(ty)), UseList(0), Name(name) {
if (!isa<Constant>(this) && !isa<BasicBlock>(this))
assert((Ty->isFirstClassType() || Ty == Type::VoidTy ||
isa<OpaqueType>(ty)) &&
@ -48,19 +48,36 @@ Value::~Value() {
// still being referenced. The value in question should be printed as
// a <badref>
//
if (Uses.begin() != Uses.end()) {
if (use_begin() != use_end()) {
std::cerr << "While deleting: " << *Ty << " %" << Name << "\n";
for (use_const_iterator I = Uses.begin(), E = Uses.end(); I != E; ++I)
for (use_iterator I = use_begin(), E = use_end(); I != E; ++I)
std::cerr << "Use still stuck around after Def is destroyed:"
<< **I << "\n";
}
#endif
assert(Uses.begin() == Uses.end() &&"Uses remain when a value is destroyed!");
assert(use_begin() == use_end() && "Uses remain when a value is destroyed!");
// There should be no uses of this object anymore, remove it.
LeakDetector::removeGarbageObject(this);
}
/// hasNUses - Return true if this Value has exactly N users.
///
bool Value::hasNUses(unsigned N) const {
use_const_iterator UI = use_begin(), E = use_end();
for (; N; --N, ++UI)
if (UI == E) return false; // Too few.
return UI == E;
}
/// getNumUses - This method computes the number of uses of this Value. This
/// is a linear time operation. Use hasOneUse or hasNUses to check for specific
/// values.
unsigned Value::getNumUses() const {
return (unsigned)std::distance(use_begin(), use_end());
}
// uncheckedReplaceAllUsesWith - This is exactly the same as replaceAllUsesWith,
// except that it doesn't have all of the asserts. The asserts fail because we
@ -69,8 +86,8 @@ Value::~Value() {
// this problem.
//
void Value::uncheckedReplaceAllUsesWith(Value *New) {
while (!Uses.empty()) {
Use &U = Uses.back();
while (!use_empty()) {
Use &U = *UseList;
// Must handle Constants specially, we cannot call replaceUsesOfWith on a
// constant!
if (Constant *C = dyn_cast<Constant>(U.getUser())) {