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-rw-r--r--lib/Transforms/IPO/IPConstantPropagation.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/IPO/IPConstantPropagation.cpp b/lib/Transforms/IPO/IPConstantPropagation.cpp
index 64d1df8354..a1e09e6bef 100644
--- a/lib/Transforms/IPO/IPConstantPropagation.cpp
+++ b/lib/Transforms/IPO/IPConstantPropagation.cpp
@@ -62,6 +62,9 @@ bool IPCP::runOnModule(Module &M) {
bool IPCP::processFunction(Function &F) {
if (F.aempty() || F.use_empty()) return false; // No arguments? Early exit.
+ // Delete any klingons.
+ F.removeDeadConstantUsers();
+
std::vector<std::pair<Constant*, bool> > ArgumentConstants;
ArgumentConstants.resize(F.asize());