1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGenCXX/fastcall.cpp b/test/CodeGenCXX/fastcall.cpp
new file mode 100644
index 000000000000..c0a910667274
--- /dev/null
+++ b/test/CodeGenCXX/fastcall.cpp
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+void __attribute__((fastcall)) foo1(int &y);
+void bar1(int &y) {
+  // CHECK: define void @_Z4bar1Ri
+  // CHECK: call x86_fastcallcc void @_Z4foo1Ri(i32* inreg %
+  foo1(y);
+}
+
+struct S1 {
+  int x;
+  S1(const S1 &y);
+};
+
+void __attribute__((fastcall)) foo2(S1 a, int b);
+void bar2(S1 a, int b) {
+  // CHECK: define void @_Z4bar22S1i
+  // CHECK: call x86_fastcallcc void @_Z4foo22S1i(%struct.S1* inreg %{{.*}}, i32 inreg %
+  foo2(a, b);
+}