1// RUN: %clang -target mipsel-unknown-linux -O3 -S -o - -emit-llvm %s | FileCheck %s -check-prefix=O32
2// RUN: %clang -target mips64el-unknown-linux -O3 -S -mabi=n64 -o - -emit-llvm %s | FileCheck %s -check-prefix=N64
3
4typedef struct {
5  double d;
6  long double ld;
7} S0;
8
9// Insert padding to ensure arguments of type S0 are aligned to 16-byte boundaries.
10
11// N64: define void @foo1(i32 %a0, i64, double %a1.coerce0, i64 %a1.coerce1, i64 %a1.coerce2, i64 %a1.coerce3, double %a2.coerce0, i64 %a2.coerce1, i64 %a2.coerce2, i64 %a2.coerce3, i32 %b, i64, double %a3.coerce0, i64 %a3.coerce1, i64 %a3.coerce2, i64 %a3.coerce3)
12// N64: tail call void @foo2(i32 1, i32 2, i32 %a0, i64 undef, double %a1.coerce0, i64 %a1.coerce1, i64 %a1.coerce2, i64 %a1.coerce3, double %a2.coerce0, i64 %a2.coerce1, i64 %a2.coerce2, i64 %a2.coerce3, i32 3, i64 undef, double %a3.coerce0, i64 %a3.coerce1, i64 %a3.coerce2, i64 %a3.coerce3)
13// N64: declare void @foo2(i32, i32, i32, i64, double, i64, i64, i64, double, i64, i64, i64, i32, i64, double, i64, i64, i64)
14
15extern void foo2(int, int, int, S0, S0, int, S0);
16
17void foo1(int a0, S0 a1, S0 a2, int b, S0 a3) {
18  foo2(1, 2, a0, a1, a2, 3, a3);
19}
20
21// Insert padding before long double argument.
22//
23// N64: define void @foo3(i32 %a0, i64, fp128 %a1)
24// N64: tail call void @foo4(i32 1, i32 2, i32 %a0, i64 undef, fp128 %a1)
25// N64: declare void @foo4(i32, i32, i32, i64, fp128)
26
27extern void foo4(int, int, int, long double);
28
29void foo3(int a0, long double a1) {
30  foo4(1, 2, a0, a1);
31}
32
33// Insert padding after hidden argument.
34//
35// N64: define void @foo5(%struct.S0* noalias sret %agg.result, i64, fp128 %a0)
36// N64: call void @foo6(%struct.S0* sret %agg.result, i32 1, i32 2, i64 undef, fp128 %a0)
37// N64: declare void @foo6(%struct.S0* sret, i32, i32, i64, fp128)
38
39extern S0 foo6(int, int, long double);
40
41S0 foo5(long double a0) {
42  return foo6(1, 2, a0);
43}
44
45// Do not insert padding if ABI is O32.
46//
47// O32: define void @foo7(float %a0, double %a1)
48// O32: declare void @foo8(float, double)
49
50extern void foo8(float, double);
51
52void foo7(float a0, double a1) {
53  foo8(a0 + 1.0f, a1 + 2.0);
54}
55
56