diff --git a/llvm/tools/llvm-readtapi/DiffEngine.cpp b/llvm/tools/llvm-readtapi/DiffEngine.cpp
--- a/llvm/tools/llvm-readtapi/DiffEngine.cpp
+++ b/llvm/tools/llvm-readtapi/DiffEngine.cpp
@@ -447,11 +447,11 @@
 
 template <typename T> void sortTargetValues(std::vector<T> &TargValues) {
   llvm::stable_sort(TargValues, [](const auto &ValA, const auto &ValB) {
+    if (ValA.getOrder() == ValB.getOrder()) {
+      return ValA.getVal() < ValB.getVal();
+    }
     return ValA.getOrder() < ValB.getOrder();
   });
-  llvm::stable_sort(TargValues, [](const auto &ValA, const auto &ValB) {
-    return ValA.getOrder() == ValB.getOrder() && ValA.getVal() < ValB.getVal();
-  });
 }
 
 template <typename T>