1 files changed, 74 insertions, 0 deletions
diff --git a/test/CodeGenCXX/microsoft-abi-arg-order.cpp b/test/CodeGenCXX/microsoft-abi-arg-order.cpp
new file mode 100644
index 000000000000..b47508b302d1
--- /dev/null
+++ b/test/CodeGenCXX/microsoft-abi-arg-order.cpp
@@ -0,0 +1,74 @@
+// RUN: %clang_cc1 -mconstructor-aliases -std=c++11 -fexceptions -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s -check-prefix=X86
+// RUN: %clang_cc1 -mconstructor-aliases -std=c++11 -fexceptions -emit-llvm %s -o - -triple=x86_64-pc-win32 | FileCheck %s -check-prefix=X64
+
+struct A {
+  A(int a);
+  A(const A &o);
+  ~A();
+  int a;
+};
+
+void foo(A a, A b, A c) {
+}
+
+// Order of destruction should be left to right.
+//
+// X86-LABEL: define void @"\01?foo@@YAXUA@@00@Z"
+// X86:          ([[argmem_ty:<{ %struct.A, %struct.A, %struct.A }>]]* inalloca)
+// X86: %[[a:[^ ]*]] = getelementptr inbounds [[argmem_ty]]* %0, i32 0, i32 0
+// X86: %[[b:[^ ]*]] = getelementptr inbounds [[argmem_ty]]* %0, i32 0, i32 1
+// X86: %[[c:[^ ]*]] = getelementptr inbounds [[argmem_ty]]* %0, i32 0, i32 2
+// X86: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %[[a]])
+// X86: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %[[b]])
+// X86: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %[[c]])
+// X86: ret void
+
+// X64-LABEL: define void @"\01?foo@@YAXUA@@00@Z"
+// X64:         (%struct.A* %[[a:[^,]*]], %struct.A* %[[b:[^,]*]], %struct.A* %[[c:[^)]*]])
+// X64: call void @"\01??1A@@QEAA@XZ"(%struct.A* %[[a]])
+// X64: call void @"\01??1A@@QEAA@XZ"(%struct.A* %[[b]])
+// X64: call void @"\01??1A@@QEAA@XZ"(%struct.A* %[[c]])
+// X64: ret void
+
+
+void call_foo() {
+  foo(A(1), A(2), A(3));
+}
+
+// Order of evaluation should be right to left, and we should clean up the right
+// things as we unwind.
+//
+// X86-LABEL: define void @"\01?call_foo@@YAXXZ"()
+// X86: call i8* @llvm.stacksave()
+// X86: %[[argmem:[^ ]*]] = alloca inalloca [[argmem_ty]]
+// X86: %[[arg3:[^ ]*]] = getelementptr inbounds [[argmem_ty]]* %[[argmem]], i32 0, i32 2
+// X86: invoke x86_thiscallcc %struct.A* @"\01??0A@@QAE@H@Z"(%struct.A* %[[arg3]], i32 3)
+// X86: %[[arg2:[^ ]*]] = getelementptr inbounds [[argmem_ty]]* %[[argmem]], i32 0, i32 1
+// X86: invoke x86_thiscallcc %struct.A* @"\01??0A@@QAE@H@Z"(%struct.A* %[[arg2]], i32 2)
+// X86: %[[arg1:[^ ]*]] = getelementptr inbounds [[argmem_ty]]* %[[argmem]], i32 0, i32 0
+// X86: invoke x86_thiscallcc %struct.A* @"\01??0A@@QAE@H@Z"(%struct.A* %[[arg1]], i32 1)
+// X86: invoke void @"\01?foo@@YAXUA@@00@Z"([[argmem_ty]]* inalloca %[[argmem]])
+// X86: call void @llvm.stackrestore
+// X86: ret void
+//
+//   lpad2:
+// X86: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %[[arg2]])
+// X86: br label
+//
+//   ehcleanup:
+// X86: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %[[arg3]])
+
+// X64-LABEL: define void @"\01?call_foo@@YAXXZ"()
+// X64: call %struct.A* @"\01??0A@@QEAA@H@Z"(%struct.A* %[[arg3:[^,]*]], i32 3)
+// X64: invoke %struct.A* @"\01??0A@@QEAA@H@Z"(%struct.A* %[[arg2:[^,]*]], i32 2)
+// X64: invoke %struct.A* @"\01??0A@@QEAA@H@Z"(%struct.A* %[[arg1:[^,]*]], i32 1)
+// X64: call void @"\01?foo@@YAXUA@@00@Z"
+// X64:       (%struct.A* %[[arg1]], %struct.A* %[[arg2]], %struct.A* %[[arg3]])
+// X64: ret void
+//
+//   lpad2:
+// X64: call void @"\01??1A@@QEAA@XZ"(%struct.A* %[[arg2]])
+// X64: br label
+//
+//   ehcleanup:
+// X64: call void @"\01??1A@@QEAA@XZ"(%struct.A* %[[arg3]])