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GlobalDCE: Fix an oversight in my last commit that could lead to crashes.

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There is a Constant with non-constant operands: blockaddress.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179460 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2013-04-13 16:11:14 +00:00
parent 8848680ce0
commit 9cbee63b1a
2 changed files with 20 additions and 2 deletions
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4
lib/Transforms/IPO/GlobalDCE.cpp
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@@ -197,8 +197,8 @@ void GlobalDCE::MarkUsedGlobalsAsNeeded(Constant *C) {
// use to the list of needed globals.
for (User::op_iterator I = C->op_begin(), E = C->op_end(); I != E; ++I) {
// If we've already processed this constant there's no need to do it again.
Constant *Op = cast<Constant>(*I);
if (SeenConstants.insert(Op))
Constant *Op = dyn_cast<Constant>(*I);
if (Op && SeenConstants.insert(Op))
MarkUsedGlobalsAsNeeded(Op);
}
}