--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/CodeGenCXX/microsoft-abi-methods.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,89 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s
+
+class C {
+ public:
+  void simple_method() {}
+
+  void __cdecl cdecl_method() {}
+
+  void vararg_method(const char *fmt, ...) {}
+
+  static void static_method() {}
+
+  int a;
+};
+
+void call_simple_method() {
+  C instance;
+
+  instance.simple_method();
+// Make sure that the call uses the right calling convention:
+// CHECK: call x86_thiscallcc void @"?simple_method@C@@QAEXXZ"
+// CHECK: ret
+
+// Make sure that the definition uses the right calling convention:
+// CHECK: define linkonce_odr dso_local x86_thiscallcc void @"?simple_method@C@@QAEXXZ"
+// CHECK: ret
+}
+
+void call_cdecl_method() {
+  C instance;
+  instance.cdecl_method();
+// Make sure that the call uses the right calling convention:
+// CHECK: call void @"?cdecl_method@C@@QAAXXZ"
+// CHECK: ret
+
+// Make sure that the definition uses the right calling convention:
+// CHECK: define linkonce_odr dso_local void @"?cdecl_method@C@@QAAXXZ"
+// CHECK: ret
+}
+
+void call_vararg_method() {
+  C instance;
+  instance.vararg_method("Hello");
+// Make sure that the call uses the right calling convention:
+// CHECK: call void (%class.C*, i8*, ...) @"?vararg_method@C@@QAAXPBDZZ"
+// CHECK: ret
+
+// Make sure that the definition uses the right calling convention:
+// CHECK: define linkonce_odr dso_local void @"?vararg_method@C@@QAAXPBDZZ"
+}
+
+void call_static_method() {
+  C::static_method();
+// Make sure that the call uses the right calling convention:
+// CHECK: call void @"?static_method@C@@SAXXZ"
+// CHECK: ret
+
+// Make sure that the definition uses the right calling convention:
+// CHECK: define linkonce_odr dso_local void @"?static_method@C@@SAXXZ"
+}
+
+class Base {
+ public:
+  Base() {}
+  ~Base() {}
+};
+
+class Child: public Base { };
+
+void constructors() {
+  Child c;
+// Make sure that the Base constructor call in the Child constructor uses
+// the right calling convention:
+// CHECK: define linkonce_odr dso_local x86_thiscallcc %class.Child* @"??0Child@@QAE@XZ"
+// CHECK: %{{[.0-9A-Z_a-z]+}} = call x86_thiscallcc %class.Base* @"??0Base@@QAE@XZ"
+// CHECK: ret
+
+// Make sure that the Base destructor call in the Child denstructor uses
+// the right calling convention:
+// CHECK: define linkonce_odr dso_local x86_thiscallcc void @"??1Child@@QAE@XZ"
+// CHECK: call x86_thiscallcc void @"??1Base@@QAE@XZ"
+// CHECK: ret
+
+// Make sure that the Base constructor definition uses the right CC:
+// CHECK: define linkonce_odr dso_local x86_thiscallcc %class.Base* @"??0Base@@QAE@XZ"
+
+// Make sure that the Base destructor definition uses the right CC:
+// CHECK: define linkonce_odr dso_local x86_thiscallcc void @"??1Base@@QAE@XZ"
+}