source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/AArch64/func-calls.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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1; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s --check-prefix=CHECK
2; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -mattr=-neon | FileCheck --check-prefix=CHECK-NONEON %s
3; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -mattr=-fp-armv8 | FileCheck --check-prefix=CHECK-NOFP %s
4; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64_be-none-linux-gnu | FileCheck --check-prefix=CHECK-BE %s
5
6%myStruct = type { i64 , i8, i32 }
7
8@var8 = global i8 0
9@var8_2 = global i8 0
10@var32 = global i32 0
11@var64 = global i64 0
12@var128 = global i128 0
13@varfloat = global float 0.0
14@varfloat_2 = global float 0.0
15@vardouble = global double 0.0
16@varstruct = global %myStruct zeroinitializer
17@varsmallstruct = global [2 x i64] zeroinitializer
18
19declare void @take_i8s(i8 %val1, i8 %val2)
20declare void @take_floats(float %val1, float %val2)
21
22define void @simple_args() {
23; CHECK-LABEL: simple_args:
24  %char1 = load i8, i8* @var8
25  %char2 = load i8, i8* @var8_2
26  call void @take_i8s(i8 %char1, i8 %char2)
27; CHECK-DAG: ldrb w0, [{{x[0-9]+}}, {{#?}}:lo12:var8]
28; CHECK-DAG: ldrb w1, [{{x[0-9]+}}, {{#?}}:lo12:var8_2]
29; CHECK: bl take_i8s
30
31  %float1 = load float, float* @varfloat
32  %float2 = load float, float* @varfloat_2
33  call void @take_floats(float %float1, float %float2)
34; CHECK-DAG: ldr s1, [{{x[0-9]+}}, {{#?}}:lo12:varfloat_2]
35; CHECK-DAG: ldr s0, [{{x[0-9]+}}, {{#?}}:lo12:varfloat]
36; CHECK: bl take_floats
37; CHECK-NOFP-NOT: ldr s1,
38; CHECK-NOFP-NOT: ldr s0,
39
40  ret void
41}
42
43declare i32 @return_int()
44declare double @return_double()
45declare [2 x i64] @return_smallstruct()
46declare void @return_large_struct(%myStruct* sret %retval)
47
48define void @simple_rets() {
49; CHECK-LABEL: simple_rets:
50
51  %int = call i32 @return_int()
52  store i32 %int, i32* @var32
53; CHECK: bl return_int
54; CHECK: str w0, [{{x[0-9]+}}, {{#?}}:lo12:var32]
55
56  %dbl = call double @return_double()
57  store double %dbl, double* @vardouble
58; CHECK: bl return_double
59; CHECK: str d0, [{{x[0-9]+}}, {{#?}}:lo12:vardouble]
60; CHECK-NOFP-NOT: str d0,
61
62  %arr = call [2 x i64] @return_smallstruct()
63  store [2 x i64] %arr, [2 x i64]* @varsmallstruct
64; CHECK: bl return_smallstruct
65; CHECK: add x[[VARSMALLSTRUCT:[0-9]+]], {{x[0-9]+}}, :lo12:varsmallstruct
66; CHECK: stp x0, x1, [x[[VARSMALLSTRUCT]]]
67
68  call void @return_large_struct(%myStruct* sret @varstruct)
69; CHECK: add x8, {{x[0-9]+}}, {{#?}}:lo12:varstruct
70; CHECK: bl return_large_struct
71
72  ret void
73}
74
75
76declare i32 @struct_on_stack(i8 %var0, i16 %var1, i32 %var2, i64 %var3, i128 %var45,
77                             i32* %var6, %myStruct* byval %struct, i32 %stacked,
78                             double %notstacked)
79declare void @stacked_fpu(float %var0, double %var1, float %var2, float %var3,
80                          float %var4, float %var5, float %var6, float %var7,
81                          float %var8)
82
83define void @check_stack_args() {
84; CHECK-LABEL: check_stack_args:
85  call i32 @struct_on_stack(i8 0, i16 12, i32 42, i64 99, i128 1,
86                            i32* @var32, %myStruct* byval @varstruct,
87                            i32 999, double 1.0)
88  ; Want to check that the final double is passed in registers and
89  ; that varstruct is passed on the stack. Rather dependent on how a
90  ; memcpy gets created, but the following works for now.
91
92; CHECK-DAG: str {{q[0-9]+}}, [sp, #-16]
93; CHECK-DAG: fmov d[[FINAL_DOUBLE:[0-9]+]], #1.0
94; CHECK: mov v0.16b, v[[FINAL_DOUBLE]].16b
95
96; CHECK-NONEON-DAG: str {{q[0-9]+}}, [sp, #-16]!
97; CHECK-NONEON-DAG: fmov d[[FINAL_DOUBLE:[0-9]+]], #1.0
98; CHECK-NONEON: fmov d0, d[[FINAL_DOUBLE]]
99
100; CHECK: bl struct_on_stack
101; CHECK-NOFP-NOT: fmov
102
103  call void @stacked_fpu(float -1.0, double 1.0, float 4.0, float 2.0,
104                         float -2.0, float -8.0, float 16.0, float 1.0,
105                         float 64.0)
106
107; CHECK:  movz [[SIXTY_FOUR:w[0-9]+]], #0x4280, lsl #16
108; CHECK: str [[SIXTY_FOUR]], [sp]
109
110; CHECK-NONEON:  movz [[SIXTY_FOUR:w[0-9]+]], #0x4280, lsl #16
111; CHECK-NONEON: str [[SIXTY_FOUR]], [sp]
112
113; CHECK: bl stacked_fpu
114  ret void
115}
116
117
118declare void @check_i128_stackalign(i32 %val0, i32 %val1, i32 %val2, i32 %val3,
119                                    i32 %val4, i32 %val5, i32 %val6, i32 %val7,
120                                    i32 %stack1, i128 %stack2)
121
122declare void @check_i128_regalign(i32 %val0, i128 %val1)
123
124
125define void @check_i128_align() {
126; CHECK-LABEL: check_i128_align:
127  %val = load i128, i128* @var128
128  call void @check_i128_stackalign(i32 0, i32 1, i32 2, i32 3,
129                                   i32 4, i32 5, i32 6, i32 7,
130                                   i32 42, i128 %val)
131; CHECK: add x[[VAR128:[0-9]+]], {{x[0-9]+}}, :lo12:var128
132; CHECK: ldp [[I128LO:x[0-9]+]], [[I128HI:x[0-9]+]], [x[[VAR128]]]
133; CHECK: stp [[I128LO]], [[I128HI]], [sp, #16]
134
135; CHECK-NONEON: add x[[VAR128:[0-9]+]], {{x[0-9]+}}, :lo12:var128
136; CHECK-NONEON: ldp [[I128LO:x[0-9]+]], [[I128HI:x[0-9]+]], [x[[VAR128]]]
137; CHECK-NONEON: stp [[I128LO]], [[I128HI]], [sp, #16]
138; CHECK: bl check_i128_stackalign
139
140  call void @check_i128_regalign(i32 0, i128 42)
141; CHECK-NOT: mov x1
142; CHECK-LE: movz x2, #{{0x2a|42}}
143; CHECK-LE: mov x3, xzr
144; CHECK-BE: movz {{x|w}}3, #{{0x2a|42}}
145; CHECK-BE: mov x2, xzr
146; CHECK: bl check_i128_regalign
147
148  ret void
149}
150
151@fptr = global void()* null
152
153define void @check_indirect_call() {
154; CHECK-LABEL: check_indirect_call:
155  %func = load void()*, void()** @fptr
156  call void %func()
157; CHECK: ldr [[FPTR:x[0-9]+]], [{{x[0-9]+}}, {{#?}}:lo12:fptr]
158; CHECK: blr [[FPTR]]
159
160  ret void
161}
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