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Not having an aliasee is a theoretical possibility. 

llvm-svn: 61745
This commit is contained in:
Duncan Sands 2009-01-05 20:47:56 +00:00
parent 821d13cf78
commit 52e5deece5
1 changed files with 2 additions and 1 deletions
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3
llvm/lib/Transforms/IPO/GlobalDCE.cpp
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@ -161,7 +161,8 @@ void GlobalDCE::GlobalIsNeeded(GlobalValue *G) {
MarkUsedGlobalsAsNeeded(GV->getInitializer());
} else if (GlobalAlias *GA = dyn_cast<GlobalAlias>(G)) {
// The target of a global alias is needed.
MarkUsedGlobalsAsNeeded(GA->getAliasee());
if (Constant *Aliasee = GA->getAliasee())
MarkUsedGlobalsAsNeeded(Aliasee);
} else {
// Otherwise this must be a function object. We have to scan the body of
// the function looking for constants and global values which are used as