diff --git a/llvm/tools/llvm-mca/Views/BottleneckAnalysis.h b/llvm/tools/llvm-mca/Views/BottleneckAnalysis.h
index 529090cf543fc..d4c07f521e6b1 100644
--- a/llvm/tools/llvm-mca/Views/BottleneckAnalysis.h
+++ b/llvm/tools/llvm-mca/Views/BottleneckAnalysis.h
@@ -228,7 +228,10 @@ class DependencyGraph {
     unsigned Depth;
 
     DependencyEdge CriticalPredecessor;
-    SmallVector<DependencyEdge, 8> OutgoingEdges;
+    // Measurements show that more than 90% of nodes have no outgoing edges. To
+    // minimize memory consumption we use SmallVector with zero inline elements
+    // that is preferred version of std::vector.
+    SmallVector<DependencyEdge, 0> OutgoingEdges;
   };
   SmallVector<DGNode, 16> Nodes;