1*67e74705SXin Li // RUN: %clang_cc1 -triple thumbv7k-apple-watchos2.0 -target-abi aapcs16 -target-cpu cortex-a7 %s -o - -emit-llvm | FileCheck %s
2*67e74705SXin Li
3*67e74705SXin Li #include <arm_neon.h>
4*67e74705SXin Li
5*67e74705SXin Li // Make sure 64 and 128 bit types are naturally aligned by the v7k ABI:
6*67e74705SXin Li
7*67e74705SXin Li // CHECK: target datalayout = "e-m:o-p:32:32-i64:64-a:0:32-n32-S128"
8*67e74705SXin Li
9*67e74705SXin Li typedef struct {
10*67e74705SXin Li float arr[4];
11*67e74705SXin Li } HFA;
12*67e74705SXin Li
13*67e74705SXin Li // CHECK: define void @simple_hfa([4 x float] %h.coerce)
simple_hfa(HFA h)14*67e74705SXin Li void simple_hfa(HFA h) {}
15*67e74705SXin Li
16*67e74705SXin Li // CHECK: define %struct.HFA @return_simple_hfa
return_simple_hfa()17*67e74705SXin Li HFA return_simple_hfa() {}
18*67e74705SXin Li
19*67e74705SXin Li typedef struct {
20*67e74705SXin Li double arr[4];
21*67e74705SXin Li } BigHFA;
22*67e74705SXin Li
23*67e74705SXin Li // We don't want any padding type to be included by Clang when using the
24*67e74705SXin Li // APCS-VFP ABI, that needs to be handled by LLVM if needed.
25*67e74705SXin Li
26*67e74705SXin Li // CHECK: void @no_padding(i32 %r0, i32 %r1, i32 %r2, [4 x double] %d0_d3.coerce, [4 x double] %d4_d7.coerce, [4 x double] %sp.coerce, i64 %split)
no_padding(int r0,int r1,int r2,BigHFA d0_d3,BigHFA d4_d7,BigHFA sp,long long split)27*67e74705SXin Li void no_padding(int r0, int r1, int r2, BigHFA d0_d3, BigHFA d4_d7, BigHFA sp,
28*67e74705SXin Li long long split) {}
29*67e74705SXin Li
30*67e74705SXin Li // Structs larger than 16 bytes should be passed indirectly in space allocated
31*67e74705SXin Li // by the caller (a pointer to this storage should be what occurs in the arg
32*67e74705SXin Li // list).
33*67e74705SXin Li
34*67e74705SXin Li typedef struct {
35*67e74705SXin Li float x;
36*67e74705SXin Li long long y;
37*67e74705SXin Li double z;
38*67e74705SXin Li } BigStruct;
39*67e74705SXin Li
40*67e74705SXin Li // CHECK: define void @big_struct_indirect(%struct.BigStruct* %b)
big_struct_indirect(BigStruct b)41*67e74705SXin Li void big_struct_indirect(BigStruct b) {}
42*67e74705SXin Li
43*67e74705SXin Li // CHECK: define void @return_big_struct_indirect(%struct.BigStruct* noalias sret
return_big_struct_indirect()44*67e74705SXin Li BigStruct return_big_struct_indirect() {}
45*67e74705SXin Li
46*67e74705SXin Li // Structs smaller than 16 bytes should be passed directly, and coerced to
47*67e74705SXin Li // either [N x i32] or [N x i64] depending on alignment requirements.
48*67e74705SXin Li
49*67e74705SXin Li typedef struct {
50*67e74705SXin Li float x;
51*67e74705SXin Li int y;
52*67e74705SXin Li double z;
53*67e74705SXin Li } SmallStruct;
54*67e74705SXin Li
55*67e74705SXin Li // CHECK: define void @small_struct_direct([2 x i64] %s.coerce)
small_struct_direct(SmallStruct s)56*67e74705SXin Li void small_struct_direct(SmallStruct s) {}
57*67e74705SXin Li
58*67e74705SXin Li // CHECK: define [4 x i32] @return_small_struct_direct()
return_small_struct_direct()59*67e74705SXin Li SmallStruct return_small_struct_direct() {}
60*67e74705SXin Li
61*67e74705SXin Li typedef struct {
62*67e74705SXin Li float x;
63*67e74705SXin Li int y;
64*67e74705SXin Li int z;
65*67e74705SXin Li } SmallStructSmallAlign;
66*67e74705SXin Li
67*67e74705SXin Li // CHECK: define void @small_struct_align_direct([3 x i32] %s.coerce)
small_struct_align_direct(SmallStructSmallAlign s)68*67e74705SXin Li void small_struct_align_direct(SmallStructSmallAlign s) {}
69*67e74705SXin Li
70*67e74705SXin Li typedef struct {
71*67e74705SXin Li char x;
72*67e74705SXin Li short y;
73*67e74705SXin Li } PaddedSmallStruct;
74*67e74705SXin Li
75*67e74705SXin Li // CHECK: define i32 @return_padded_small_struct()
return_padded_small_struct()76*67e74705SXin Li PaddedSmallStruct return_padded_small_struct() {}
77*67e74705SXin Li
78*67e74705SXin Li typedef struct {
79*67e74705SXin Li char arr[7];
80*67e74705SXin Li } OddlySizedStruct;
81*67e74705SXin Li
82*67e74705SXin Li // CHECK: define [2 x i32] @return_oddly_sized_struct()
return_oddly_sized_struct()83*67e74705SXin Li OddlySizedStruct return_oddly_sized_struct() {}
84*67e74705SXin Li
85*67e74705SXin Li // CHECK: define <4 x float> @test_va_arg_vec(i8* %l)
86*67e74705SXin Li // CHECK: [[ALIGN_TMP:%.*]] = add i32 {{%.*}}, 15
87*67e74705SXin Li // CHECK: [[ALIGNED:%.*]] = and i32 [[ALIGN_TMP]], -16
88*67e74705SXin Li // CHECK: [[ALIGNED_I8:%.*]] = inttoptr i32 [[ALIGNED]] to i8*
89*67e74705SXin Li // CHECK: [[ALIGNED_VEC:%.*]] = bitcast i8* [[ALIGNED_I8]] to <4 x float>
90*67e74705SXin Li // CHECK: load <4 x float>, <4 x float>* [[ALIGNED_VEC]], align 16
test_va_arg_vec(__builtin_va_list l)91*67e74705SXin Li float32x4_t test_va_arg_vec(__builtin_va_list l) {
92*67e74705SXin Li return __builtin_va_arg(l, float32x4_t);
93*67e74705SXin Li }
94