1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
; RUN: | FileCheck %s --check-prefix=RV32
; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
; RUN: | FileCheck %s --check-prefix=RV64
define void @f1() shadowcallstack {
; RV32-LABEL: f1:
; RV32: # %bb.0:
; RV32-NEXT: ret
;
; RV64-LABEL: f1:
; RV64: # %bb.0:
; RV64-NEXT: ret
ret void
}
declare void @foo()
define void @f2() shadowcallstack {
; RV32-LABEL: f2:
; RV32: # %bb.0:
; RV32-NEXT: tail foo@plt
;
; RV64-LABEL: f2:
; RV64: # %bb.0:
; RV64-NEXT: tail foo@plt
tail call void @foo()
ret void
}
declare i32 @bar()
define i32 @f3() shadowcallstack {
; RV32-LABEL: f3:
; RV32: # %bb.0:
; RV32-NEXT: addi gp, gp, 4
; RV32-NEXT: sw ra, -4(gp)
; RV32-NEXT: .cfi_escape 0x16, 0x03, 0x02, 0x73, 0x7c #
; RV32-NEXT: addi sp, sp, -16
; RV32-NEXT: .cfi_def_cfa_offset 16
; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32-NEXT: .cfi_offset ra, -4
; RV32-NEXT: call bar@plt
; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-NEXT: addi sp, sp, 16
; RV32-NEXT: lw ra, -4(gp)
; RV32-NEXT: addi gp, gp, -4
; RV32-NEXT: .cfi_restore gp
; RV32-NEXT: ret
;
; RV64-LABEL: f3:
; RV64: # %bb.0:
; RV64-NEXT: addi gp, gp, 8
; RV64-NEXT: sd ra, -8(gp)
; RV64-NEXT: .cfi_escape 0x16, 0x03, 0x02, 0x73, 0x78 #
; RV64-NEXT: addi sp, sp, -16
; RV64-NEXT: .cfi_def_cfa_offset 16
; RV64-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64-NEXT: .cfi_offset ra, -8
; RV64-NEXT: call bar@plt
; RV64-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-NEXT: addi sp, sp, 16
; RV64-NEXT: ld ra, -8(gp)
; RV64-NEXT: addi gp, gp, -8
; RV64-NEXT: .cfi_restore gp
; RV64-NEXT: ret
%res = call i32 @bar()
%res1 = add i32 %res, 1
ret i32 %res
}
define i32 @f4() shadowcallstack {
; RV32-LABEL: f4:
; RV32: # %bb.0:
; RV32-NEXT: addi gp, gp, 4
; RV32-NEXT: sw ra, -4(gp)
; RV32-NEXT: .cfi_escape 0x16, 0x03, 0x02, 0x73, 0x7c #
; RV32-NEXT: addi sp, sp, -16
; RV32-NEXT: .cfi_def_cfa_offset 16
; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
; RV32-NEXT: sw s1, 4(sp) # 4-byte Folded Spill
; RV32-NEXT: sw s2, 0(sp) # 4-byte Folded Spill
; RV32-NEXT: .cfi_offset ra, -4
; RV32-NEXT: .cfi_offset s0, -8
; RV32-NEXT: .cfi_offset s1, -12
; RV32-NEXT: .cfi_offset s2, -16
; RV32-NEXT: call bar@plt
; RV32-NEXT: mv s0, a0
; RV32-NEXT: call bar@plt
; RV32-NEXT: mv s1, a0
; RV32-NEXT: call bar@plt
; RV32-NEXT: mv s2, a0
; RV32-NEXT: call bar@plt
; RV32-NEXT: add s0, s0, s1
; RV32-NEXT: add a0, s2, a0
; RV32-NEXT: add a0, s0, a0
; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32-NEXT: lw s1, 4(sp) # 4-byte Folded Reload
; RV32-NEXT: lw s2, 0(sp) # 4-byte Folded Reload
; RV32-NEXT: addi sp, sp, 16
; RV32-NEXT: lw ra, -4(gp)
; RV32-NEXT: addi gp, gp, -4
; RV32-NEXT: .cfi_restore gp
; RV32-NEXT: ret
;
; RV64-LABEL: f4:
; RV64: # %bb.0:
; RV64-NEXT: addi gp, gp, 8
; RV64-NEXT: sd ra, -8(gp)
; RV64-NEXT: .cfi_escape 0x16, 0x03, 0x02, 0x73, 0x78 #
; RV64-NEXT: addi sp, sp, -32
; RV64-NEXT: .cfi_def_cfa_offset 32
; RV64-NEXT: sd ra, 24(sp) # 8-byte Folded Spill
; RV64-NEXT: sd s0, 16(sp) # 8-byte Folded Spill
; RV64-NEXT: sd s1, 8(sp) # 8-byte Folded Spill
; RV64-NEXT: sd s2, 0(sp) # 8-byte Folded Spill
; RV64-NEXT: .cfi_offset ra, -8
; RV64-NEXT: .cfi_offset s0, -16
; RV64-NEXT: .cfi_offset s1, -24
; RV64-NEXT: .cfi_offset s2, -32
; RV64-NEXT: call bar@plt
; RV64-NEXT: mv s0, a0
; RV64-NEXT: call bar@plt
; RV64-NEXT: mv s1, a0
; RV64-NEXT: call bar@plt
; RV64-NEXT: mv s2, a0
; RV64-NEXT: call bar@plt
; RV64-NEXT: add s0, s0, s1
; RV64-NEXT: add a0, s2, a0
; RV64-NEXT: addw a0, s0, a0
; RV64-NEXT: ld ra, 24(sp) # 8-byte Folded Reload
; RV64-NEXT: ld s0, 16(sp) # 8-byte Folded Reload
; RV64-NEXT: ld s1, 8(sp) # 8-byte Folded Reload
; RV64-NEXT: ld s2, 0(sp) # 8-byte Folded Reload
; RV64-NEXT: addi sp, sp, 32
; RV64-NEXT: ld ra, -8(gp)
; RV64-NEXT: addi gp, gp, -8
; RV64-NEXT: .cfi_restore gp
; RV64-NEXT: ret
%res1 = call i32 @bar()
%res2 = call i32 @bar()
%res3 = call i32 @bar()
%res4 = call i32 @bar()
%res12 = add i32 %res1, %res2
%res34 = add i32 %res3, %res4
%res1234 = add i32 %res12, %res34
ret i32 %res1234
}
define i32 @f5() shadowcallstack nounwind {
; RV32-LABEL: f5:
; RV32: # %bb.0:
; RV32-NEXT: addi gp, gp, 4
; RV32-NEXT: sw ra, -4(gp)
; RV32-NEXT: addi sp, sp, -16
; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32-NEXT: call bar@plt
; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-NEXT: addi sp, sp, 16
; RV32-NEXT: lw ra, -4(gp)
; RV32-NEXT: addi gp, gp, -4
; RV32-NEXT: ret
;
; RV64-LABEL: f5:
; RV64: # %bb.0:
; RV64-NEXT: addi gp, gp, 8
; RV64-NEXT: sd ra, -8(gp)
; RV64-NEXT: addi sp, sp, -16
; RV64-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64-NEXT: call bar@plt
; RV64-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-NEXT: addi sp, sp, 16
; RV64-NEXT: ld ra, -8(gp)
; RV64-NEXT: addi gp, gp, -8
; RV64-NEXT: ret
%res = call i32 @bar()
%res1 = add i32 %res, 1
ret i32 %res
}
|
