1 // RUN: %clang_cc1 -triple thumbv7k-apple-watchos2.0 -target-abi aapcs16 -target-cpu cortex-a7 %s -o - -emit-llvm | FileCheck %s
2
3 // REQUIRES: aarch64-registered-target || arm-registered-target
4
5 #include <arm_neon.h>
6
7 // Make sure 64 and 128 bit types are naturally aligned by the v7k ABI:
8
9 // CHECK: target datalayout = "e-m:o-p:32:32-Fi8-i64:64-a:0:32-n32-S128"
10
11 typedef struct {
12 float arr[4];
13 } HFA;
14
15 // CHECK: define{{.*}} void @simple_hfa([4 x float] %h.coerce)
simple_hfa(HFA h)16 void simple_hfa(HFA h) {}
17
18 // CHECK: define{{.*}} %struct.HFA @return_simple_hfa
return_simple_hfa()19 HFA return_simple_hfa() {}
20
21 typedef struct {
22 double arr[4];
23 } BigHFA;
24
25 // We don't want any padding type to be included by Clang when using the
26 // APCS-VFP ABI, that needs to be handled by LLVM if needed.
27
28 // CHECK: void @no_padding(i32 noundef %r0, i32 noundef %r1, i32 noundef %r2, [4 x double] %d0_d3.coerce, [4 x double] %d4_d7.coerce, [4 x double] %sp.coerce, i64 noundef %split)
no_padding(int r0,int r1,int r2,BigHFA d0_d3,BigHFA d4_d7,BigHFA sp,long long split)29 void no_padding(int r0, int r1, int r2, BigHFA d0_d3, BigHFA d4_d7, BigHFA sp,
30 long long split) {}
31
32 // Structs larger than 16 bytes should be passed indirectly in space allocated
33 // by the caller (a pointer to this storage should be what occurs in the arg
34 // list).
35
36 typedef struct {
37 float x;
38 long long y;
39 double z;
40 } BigStruct;
41
42 // CHECK: define{{.*}} void @big_struct_indirect(ptr noundef %b)
big_struct_indirect(BigStruct b)43 void big_struct_indirect(BigStruct b) {}
44
45 // CHECK: define{{.*}} void @return_big_struct_indirect(ptr dead_on_unwind noalias writable sret
return_big_struct_indirect()46 BigStruct return_big_struct_indirect() {}
47
48 // Structs smaller than 16 bytes should be passed directly, and coerced to
49 // either [N x i32] or [N x i64] depending on alignment requirements.
50
51 typedef struct {
52 float x;
53 int y;
54 double z;
55 } SmallStruct;
56
57 // CHECK: define{{.*}} void @small_struct_direct([2 x i64] %s.coerce)
small_struct_direct(SmallStruct s)58 void small_struct_direct(SmallStruct s) {}
59
60 // CHECK: define{{.*}} [4 x i32] @return_small_struct_direct()
return_small_struct_direct()61 SmallStruct return_small_struct_direct() {}
62
63 typedef struct {
64 float x;
65 int y;
66 int z;
67 } SmallStructSmallAlign;
68
69 // CHECK: define{{.*}} void @small_struct_align_direct([3 x i32] %s.coerce)
small_struct_align_direct(SmallStructSmallAlign s)70 void small_struct_align_direct(SmallStructSmallAlign s) {}
71
72 typedef struct {
73 char x;
74 short y;
75 } PaddedSmallStruct;
76
77 // CHECK: define{{.*}} i32 @return_padded_small_struct()
return_padded_small_struct()78 PaddedSmallStruct return_padded_small_struct() {}
79
80 typedef struct {
81 char arr[7];
82 } OddlySizedStruct;
83
84 // CHECK: define{{.*}} [2 x i32] @return_oddly_sized_struct()
return_oddly_sized_struct()85 OddlySizedStruct return_oddly_sized_struct() {}
86
87 // CHECK: define{{.*}} <4 x float> @test_va_arg_vec(ptr noundef %l)
88
89
90 // CHECK: [[GEP_ALIGN:%.+]] = getelementptr inbounds i8, ptr {{%.*}}, i32 15
91 // CHECK: [[ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[GEP_ALIGN]], i32 -16)
92 // CHECK: load <4 x float>, ptr [[ALIGNED]], align 16
test_va_arg_vec(__builtin_va_list l)93 float32x4_t test_va_arg_vec(__builtin_va_list l) {
94 return __builtin_va_arg(l, float32x4_t);
95 }
96