[ms-inline asm] Add a test case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163731 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ms-inline-asm.c b/test/CodeGen/ms-inline-asm.c
index a3758c6..9202614 100644
--- a/test/CodeGen/ms-inline-asm.c
+++ b/test/CodeGen/ms-inline-asm.c
@@ -145,3 +145,9 @@
 // CHECK: t17
 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr [eax]", "~{eax},~{dirflag},~{fpsr},~{flags}"() nounwind
 }
+
+void t18(void) {
+  __asm mov dword ptr [eax], eax
+// CHECK: t18
+// CHECK: call void asm sideeffect inteldialect "mov dword ptr [eax], eax", "~{dirflag},~{fpsr},~{flags}"() nounwind
+}