diff --git a/llvm/lib/Transforms/IPO/SampleProfile.cpp b/llvm/lib/Transforms/IPO/SampleProfile.cpp
index 0c8d8624f71b..96fdd7632dc6 100644
--- a/llvm/lib/Transforms/IPO/SampleProfile.cpp
+++ b/llvm/lib/Transforms/IPO/SampleProfile.cpp
@@ -1345,7 +1345,7 @@ bool SampleProfileLoader::inlineHotFunctionsWithPriority(
     if (CalledFunction == &F)
       continue;
     if (I->isIndirectCall()) {
-      uint64_t Sum;
+      uint64_t Sum = 0;
       auto CalleeSamples = findIndirectCallFunctionSamples(*I, Sum);
       uint64_t SumOrigin = Sum;
       Sum *= Candidate.CallsiteDistribution;