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Fix infinite loop due to iteration 

llvm-svn: 16864
This commit is contained in:
Chris Lattner 2004-10-09 03:32:52 +00:00
parent 4ad08352b4
commit f369b38d55
1 changed files with 7 additions and 1 deletions
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8
llvm/lib/Transforms/IPO/GlobalOpt.cpp
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@ -374,16 +374,22 @@ static bool ProcessInternalGlobal(GlobalVariable *GV, Module::giterator &GVI) {
// Delete it now.
if (!GS.isLoaded) {
DEBUG(std::cerr << "GLOBAL NEVER LOADED: " << *GV);
unsigned NumUsers = GV->use_size();
// Delete any stores we can find to the global. We may not be able to
// make it completely dead though.
CleanupConstantGlobalUsers(GV, GV->getInitializer());
// Did we delete any stores?
bool Changed = NumUsers != GV->use_size();
// If the global is dead now, delete it.
if (GV->use_empty()) {
GV->getParent()->getGlobalList().erase(GV);
++NumDeleted;
Changed = true;
}
return true;
return Changed;
} else if (GS.StoredType <= GlobalStatus::isInitializerStored) {
DEBUG(std::cerr << "MARKING CONSTANT: " << *GV);