1; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
2
3%myStruct = type { i64 , i8, i32 }
4
5@var8 = global i8 0
6@var8_2 = global i8 0
7@var32 = global i32 0
8@var64 = global i64 0
9@var128 = global i128 0
10@varfloat = global float 0.0
11@varfloat_2 = global float 0.0
12@vardouble = global double 0.0
13@varstruct = global %myStruct zeroinitializer
14@varsmallstruct = global [2 x i64] zeroinitializer
15
16declare void @take_i8s(i8 %val1, i8 %val2)
17declare void @take_floats(float %val1, float %val2)
18
19define void @simple_args() {
20; CHECK: simple_args:
21  %char1 = load i8* @var8
22  %char2 = load i8* @var8_2
23  call void @take_i8s(i8 %char1, i8 %char2)
24; CHECK: ldrb w0, [{{x[0-9]+}}, #:lo12:var8]
25; CHECK: ldrb w1, [{{x[0-9]+}}, #:lo12:var8_2]
26; CHECK: bl take_i8s
27
28  %float1 = load float* @varfloat
29  %float2 = load float* @varfloat_2
30  call void @take_floats(float %float1, float %float2)
31; CHECK: ldr s1, [{{x[0-9]+}}, #:lo12:varfloat_2]
32; CHECK: ldr s0, [{{x[0-9]+}}, #:lo12:varfloat]
33; CHECK: bl take_floats
34
35  ret void
36}
37
38declare i32 @return_int()
39declare double @return_double()
40declare [2 x i64] @return_smallstruct()
41declare void @return_large_struct(%myStruct* sret %retval)
42
43define void @simple_rets() {
44; CHECK: simple_rets:
45
46  %int = call i32 @return_int()
47  store i32 %int, i32* @var32
48; CHECK: bl return_int
49; CHECK: str w0, [{{x[0-9]+}}, #:lo12:var32]
50
51  %dbl = call double @return_double()
52  store double %dbl, double* @vardouble
53; CHECK: bl return_double
54; CHECK: str d0, [{{x[0-9]+}}, #:lo12:vardouble]
55
56  %arr = call [2 x i64] @return_smallstruct()
57  store [2 x i64] %arr, [2 x i64]* @varsmallstruct
58; CHECK: bl return_smallstruct
59; CHECK: str x1, [{{x[0-9]+}}, #8]
60; CHECK: str x0, [{{x[0-9]+}}, #:lo12:varsmallstruct]
61
62  call void @return_large_struct(%myStruct* sret @varstruct)
63; CHECK: add x8, {{x[0-9]+}}, #:lo12:varstruct
64; CHECK: bl return_large_struct
65
66  ret void
67}
68
69
70declare i32 @struct_on_stack(i8 %var0, i16 %var1, i32 %var2, i64 %var3, i128 %var45,
71                             i32* %var6, %myStruct* byval %struct, i32 %stacked,
72                             double %notstacked)
73declare void @stacked_fpu(float %var0, double %var1, float %var2, float %var3,
74                          float %var4, float %var5, float %var6, float %var7,
75                          float %var8)
76
77define void @check_stack_args() {
78  call i32 @struct_on_stack(i8 0, i16 12, i32 42, i64 99, i128 1,
79                            i32* @var32, %myStruct* byval @varstruct,
80                            i32 999, double 1.0)
81  ; Want to check that the final double is passed in registers and
82  ; that varstruct is passed on the stack. Rather dependent on how a
83  ; memcpy gets created, but the following works for now.
84; CHECK: mov x0, sp
85; CHECK: str {{w[0-9]+}}, [x0]
86; CHECK: str {{w[0-9]+}}, [x0, #12]
87; CHECK: fmov d0,
88; CHECK: bl struct_on_stack
89
90  call void @stacked_fpu(float -1.0, double 1.0, float 4.0, float 2.0,
91                         float -2.0, float -8.0, float 16.0, float 1.0,
92                         float 64.0)
93; CHECK: ldr s[[STACKEDREG:[0-9]+]], [{{x[0-9]+}}, #:lo12:.LCPI
94; CHECK: mov x0, sp
95; CHECK: str d[[STACKEDREG]], [x0]
96; CHECK: bl stacked_fpu
97  ret void
98}
99
100
101declare void @check_i128_stackalign(i32 %val0, i32 %val1, i32 %val2, i32 %val3,
102                                    i32 %val4, i32 %val5, i32 %val6, i32 %val7,
103                                    i32 %stack1, i128 %stack2)
104
105declare void @check_i128_regalign(i32 %val0, i128 %val1)
106
107
108define void @check_i128_align() {
109; CHECK: check_i128_align:
110  %val = load i128* @var128
111  call void @check_i128_stackalign(i32 0, i32 1, i32 2, i32 3,
112                                   i32 4, i32 5, i32 6, i32 7,
113                                   i32 42, i128 %val)
114; CHECK: ldr [[I128LO:x[0-9]+]], [{{x[0-9]+}}, #:lo12:var128]
115; CHECK: ldr [[I128HI:x[0-9]+]], [{{x[0-9]+}}, #8]
116; CHECK: mov x[[SPREG:[0-9]+]], sp
117; CHECK: str [[I128HI]], [x[[SPREG]], #24]
118; CHECK: str [[I128LO]], [x[[SPREG]], #16]
119; CHECK: bl check_i128_stackalign
120
121  call void @check_i128_regalign(i32 0, i128 42)
122; CHECK-NOT: mov x1
123; CHECK: movz x2, #42
124; CHECK: mov x3, xzr
125; CHECK: bl check_i128_regalign
126
127  ret void
128}
129
130@fptr = global void()* null
131
132define void @check_indirect_call() {
133; CHECK: check_indirect_call:
134  %func = load void()** @fptr
135  call void %func()
136; CHECK: ldr [[FPTR:x[0-9]+]], [{{x[0-9]+}}, #:lo12:fptr]
137; CHECK: blr [[FPTR]]
138
139  ret void
140}
141