1// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
2
3
4// CHECK: _Z3fooRi(i32* inreg
5void __attribute__ ((regparm (1)))  foo(int &a) {
6}
7
8struct S1 {
9  int x;
10  S1(const S1 &y);
11};
12
13void __attribute__((regparm(3))) foo2(S1 a, int b);
14// CHECK: declare void @_Z4foo22S1i(%struct.S1* inreg, i32 inreg)
15void bar2(S1 a, int b) {
16  foo2(a, b);
17}
18
19struct S2 {
20  int x;
21};
22
23void __attribute__((regparm(3))) foo3(struct S2 a, int b);
24// CHECK: declare void @_Z4foo32S2i(i32 inreg, i32 inreg)
25void bar3(struct S2 a, int b) {
26  foo3(a, b);
27}
28
29struct S3 {
30  struct {
31    struct {} b[0];
32  } a;
33};
34__attribute((regparm(2))) void foo4(S3 a, int b);
35// CHECK: declare void @_Z4foo42S3i(%struct.S3* byval align 4, i32 inreg)
36void bar3(S3 a, int b) {
37  foo4(a, b);
38}
39