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Actually, leave the check in. This prevents us from counting dead arguments
as IPCP opportunities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17680 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -113,7 +113,7 @@ bool IPCP::processFunction(Function &F) {
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bool MadeChange = false;
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for (unsigned i = 0, e = ArgumentConstants.size(); i != e; ++i, ++AI)
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// Do we have a constant argument!?
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if (!ArgumentConstants[i].second) {
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if (!ArgumentConstants[i].second && !AI->use_empty()) {
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Value *V = ArgumentConstants[i].first;
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if (V == 0) V = UndefValue::get(AI->getType());
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AI->replaceAllUsesWith(V);
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