Index: lib/CodeGen/CGClass.cpp
===================================================================
--- lib/CodeGen/CGClass.cpp
+++ lib/CodeGen/CGClass.cpp
@@ -1608,6 +1608,7 @@
 
   LexicalScope Scope(*this, RootCS->getSourceRange());
 
+  incrementProfileCounter(RootCS);
   AssignmentMemcpyizer AM(*this, AssignOp, Args);
   for (auto *I : RootCS->body())
     AM.emitAssignment(I);
Index: test/Profile/def-assignop.cpp
===================================================================
--- test/Profile/def-assignop.cpp
+++ test/Profile/def-assignop.cpp
@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -x c++ %s -triple x86_64-unknown-linux-gnu -main-file-name def-assignop.cpp -o - -emit-llvm -fprofile-instrument=clang | FileCheck --check-prefix=PGOGEN %s
+
+
+struct B {
+  int B;
+  void *operator=(const struct B &b2) {
+    if (b2.B == 0) {
+      B = b2.B + 1;
+    } else
+      B = b2.B;
+    return this;
+  }
+};
+
+struct A : public B {
+  A &operator=(const A &) = default;
+// PGOGEN: define {{.*}}@_ZN1AaSERKS_(
+// PGOGEN: %pgocount = load {{.*}} @__profc__ZN1AaSERKS_
+// PGOGEN: {{.*}}add{{.*}}%pgocount, 1
+// PGOGEN: store{{.*}}@__profc__ZN1AaSERKS_
+  int I;
+  int J;
+  int getI() { return I; }
+};
+
+A aa;
+int g;
+int main() {
+  A aa2;
+  aa2 = aa;
+
+  g = aa2.getI();
+  return 0;
+}