1 files changed, 21 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/regparm.cpp b/clang/test/CodeGenCXX/regparm.cpp
index f0ebd2be416..07e9aa046ef 100644
--- a/clang/test/CodeGenCXX/regparm.cpp
+++ b/clang/test/CodeGenCXX/regparm.cpp
@@ -4,3 +4,24 @@
 // CHECK: _Z3fooRi(i32* inreg
 void __attribute__ ((regparm (1)))  foo(int &a) {
 }
+
+struct S1 {
+  int x;
+  S1(const S1 &y);
+};
+
+void __attribute__((regparm(3))) foo2(S1 a, int b);
+// CHECK: declare void @_Z4foo22S1i(%struct.S1* inreg, i32 inreg)
+void bar2(S1 a, int b) {
+  foo2(a, b);
+}
+
+struct S2 {
+  int x;
+};
+
+void __attribute__((regparm(3))) foo3(struct S2 a, int b);
+// declare void @_Z4foo12S1i(i32 inreg, i32 inreg) optsize
+void bar3(struct S2 a, int b) {
+  foo3(a, b);
+}