diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
--- a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
@@ -356,7 +356,7 @@
 
 Optional<DWARFFormValue>
 DWARFDie::findRecursively(ArrayRef<dwarf::Attribute> Attrs) const {
-  std::vector<DWARFDie> Worklist;
+  SmallVector<DWARFDie, 3> Worklist;
   Worklist.push_back(*this);
 
   // Keep track if DIEs already seen to prevent infinite recursion.