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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 < %s \
; RUN: | FileCheck -check-prefix=RV32 %s
; RUN: llc -mtriple=riscv64 < %s \
; RUN: | FileCheck -check-prefix=RV64 %s
; RUN: llc -mtriple=riscv32 -frame-pointer=all -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV32-WITHFP %s
; RUN: llc -mtriple=riscv64 -frame-pointer=all -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV64-WITHFP %s
define void @trivial() {
; RV32-LABEL: trivial:
; RV32: # %bb.0:
; RV32-NEXT: ret
;
; RV64-LABEL: trivial:
; RV64: # %bb.0:
; RV64-NEXT: ret
;
; RV32-WITHFP-LABEL: trivial:
; RV32-WITHFP: # %bb.0:
; RV32-WITHFP-NEXT: addi sp, sp, -16
; RV32-WITHFP-NEXT: .cfi_def_cfa_offset 16
; RV32-WITHFP-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32-WITHFP-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
; RV32-WITHFP-NEXT: .cfi_offset ra, -4
; RV32-WITHFP-NEXT: .cfi_offset s0, -8
; RV32-WITHFP-NEXT: addi s0, sp, 16
; RV32-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV32-WITHFP-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-WITHFP-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32-WITHFP-NEXT: addi sp, sp, 16
; RV32-WITHFP-NEXT: ret
;
; RV64-WITHFP-LABEL: trivial:
; RV64-WITHFP: # %bb.0:
; RV64-WITHFP-NEXT: addi sp, sp, -16
; RV64-WITHFP-NEXT: .cfi_def_cfa_offset 16
; RV64-WITHFP-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64-WITHFP-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
; RV64-WITHFP-NEXT: .cfi_offset ra, -8
; RV64-WITHFP-NEXT: .cfi_offset s0, -16
; RV64-WITHFP-NEXT: addi s0, sp, 16
; RV64-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV64-WITHFP-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-WITHFP-NEXT: ld s0, 0(sp) # 8-byte Folded Reload
; RV64-WITHFP-NEXT: addi sp, sp, 16
; RV64-WITHFP-NEXT: ret
ret void
}
define void @stack_alloc(i32 signext %size) {
; RV32-LABEL: stack_alloc:
; RV32: # %bb.0: # %entry
; 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: .cfi_offset ra, -4
; RV32-NEXT: .cfi_offset s0, -8
; RV32-NEXT: addi s0, sp, 16
; RV32-NEXT: .cfi_def_cfa s0, 0
; RV32-NEXT: addi a0, a0, 15
; RV32-NEXT: andi a0, a0, -16
; RV32-NEXT: sub a0, sp, a0
; RV32-NEXT: mv sp, a0
; RV32-NEXT: call callee_with_args@plt
; RV32-NEXT: addi sp, s0, -16
; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32-NEXT: addi sp, sp, 16
; RV32-NEXT: ret
;
; RV64-LABEL: stack_alloc:
; RV64: # %bb.0: # %entry
; 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: sd s0, 0(sp) # 8-byte Folded Spill
; RV64-NEXT: .cfi_offset ra, -8
; RV64-NEXT: .cfi_offset s0, -16
; RV64-NEXT: addi s0, sp, 16
; RV64-NEXT: .cfi_def_cfa s0, 0
; RV64-NEXT: slli a0, a0, 32
; RV64-NEXT: srli a0, a0, 32
; RV64-NEXT: addi a0, a0, 15
; RV64-NEXT: andi a0, a0, -16
; RV64-NEXT: sub a0, sp, a0
; RV64-NEXT: mv sp, a0
; RV64-NEXT: call callee_with_args@plt
; RV64-NEXT: addi sp, s0, -16
; RV64-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-NEXT: ld s0, 0(sp) # 8-byte Folded Reload
; RV64-NEXT: addi sp, sp, 16
; RV64-NEXT: ret
;
; RV32-WITHFP-LABEL: stack_alloc:
; RV32-WITHFP: # %bb.0: # %entry
; RV32-WITHFP-NEXT: addi sp, sp, -16
; RV32-WITHFP-NEXT: .cfi_def_cfa_offset 16
; RV32-WITHFP-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32-WITHFP-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
; RV32-WITHFP-NEXT: .cfi_offset ra, -4
; RV32-WITHFP-NEXT: .cfi_offset s0, -8
; RV32-WITHFP-NEXT: addi s0, sp, 16
; RV32-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV32-WITHFP-NEXT: addi a0, a0, 15
; RV32-WITHFP-NEXT: andi a0, a0, -16
; RV32-WITHFP-NEXT: sub a0, sp, a0
; RV32-WITHFP-NEXT: mv sp, a0
; RV32-WITHFP-NEXT: call callee_with_args@plt
; RV32-WITHFP-NEXT: addi sp, s0, -16
; RV32-WITHFP-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-WITHFP-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32-WITHFP-NEXT: addi sp, sp, 16
; RV32-WITHFP-NEXT: ret
;
; RV64-WITHFP-LABEL: stack_alloc:
; RV64-WITHFP: # %bb.0: # %entry
; RV64-WITHFP-NEXT: addi sp, sp, -16
; RV64-WITHFP-NEXT: .cfi_def_cfa_offset 16
; RV64-WITHFP-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64-WITHFP-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
; RV64-WITHFP-NEXT: .cfi_offset ra, -8
; RV64-WITHFP-NEXT: .cfi_offset s0, -16
; RV64-WITHFP-NEXT: addi s0, sp, 16
; RV64-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV64-WITHFP-NEXT: slli a0, a0, 32
; RV64-WITHFP-NEXT: srli a0, a0, 32
; RV64-WITHFP-NEXT: addi a0, a0, 15
; RV64-WITHFP-NEXT: andi a0, a0, -16
; RV64-WITHFP-NEXT: sub a0, sp, a0
; RV64-WITHFP-NEXT: mv sp, a0
; RV64-WITHFP-NEXT: call callee_with_args@plt
; RV64-WITHFP-NEXT: addi sp, s0, -16
; RV64-WITHFP-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-WITHFP-NEXT: ld s0, 0(sp) # 8-byte Folded Reload
; RV64-WITHFP-NEXT: addi sp, sp, 16
; RV64-WITHFP-NEXT: ret
entry:
%0 = alloca i8, i32 %size, align 16
call void @callee_with_args(ptr nonnull %0)
ret void
}
define void @branch_and_tail_call(i1 %a) {
; RV32-LABEL: branch_and_tail_call:
; RV32: # %bb.0:
; RV32-NEXT: andi a0, a0, 1
; RV32-NEXT: beqz a0, .LBB2_2
; RV32-NEXT: # %bb.1: # %blue_pill
; RV32-NEXT: tail callee1@plt
; RV32-NEXT: .LBB2_2: # %red_pill
; 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 callee2@plt
; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-NEXT: addi sp, sp, 16
; RV32-NEXT: ret
;
; RV64-LABEL: branch_and_tail_call:
; RV64: # %bb.0:
; RV64-NEXT: andi a0, a0, 1
; RV64-NEXT: beqz a0, .LBB2_2
; RV64-NEXT: # %bb.1: # %blue_pill
; RV64-NEXT: tail callee1@plt
; RV64-NEXT: .LBB2_2: # %red_pill
; 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 callee2@plt
; RV64-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-NEXT: addi sp, sp, 16
; RV64-NEXT: ret
;
; RV32-WITHFP-LABEL: branch_and_tail_call:
; RV32-WITHFP: # %bb.0:
; RV32-WITHFP-NEXT: andi a0, a0, 1
; RV32-WITHFP-NEXT: beqz a0, .LBB2_2
; RV32-WITHFP-NEXT: # %bb.1: # %blue_pill
; RV32-WITHFP-NEXT: tail callee1@plt
; RV32-WITHFP-NEXT: .LBB2_2: # %red_pill
; RV32-WITHFP-NEXT: addi sp, sp, -16
; RV32-WITHFP-NEXT: .cfi_def_cfa_offset 16
; RV32-WITHFP-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32-WITHFP-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
; RV32-WITHFP-NEXT: .cfi_offset ra, -4
; RV32-WITHFP-NEXT: .cfi_offset s0, -8
; RV32-WITHFP-NEXT: addi s0, sp, 16
; RV32-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV32-WITHFP-NEXT: call callee2@plt
; RV32-WITHFP-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32-WITHFP-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32-WITHFP-NEXT: addi sp, sp, 16
; RV32-WITHFP-NEXT: ret
;
; RV64-WITHFP-LABEL: branch_and_tail_call:
; RV64-WITHFP: # %bb.0:
; RV64-WITHFP-NEXT: andi a0, a0, 1
; RV64-WITHFP-NEXT: beqz a0, .LBB2_2
; RV64-WITHFP-NEXT: # %bb.1: # %blue_pill
; RV64-WITHFP-NEXT: tail callee1@plt
; RV64-WITHFP-NEXT: .LBB2_2: # %red_pill
; RV64-WITHFP-NEXT: addi sp, sp, -16
; RV64-WITHFP-NEXT: .cfi_def_cfa_offset 16
; RV64-WITHFP-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64-WITHFP-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
; RV64-WITHFP-NEXT: .cfi_offset ra, -8
; RV64-WITHFP-NEXT: .cfi_offset s0, -16
; RV64-WITHFP-NEXT: addi s0, sp, 16
; RV64-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV64-WITHFP-NEXT: call callee2@plt
; RV64-WITHFP-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64-WITHFP-NEXT: ld s0, 0(sp) # 8-byte Folded Reload
; RV64-WITHFP-NEXT: addi sp, sp, 16
; RV64-WITHFP-NEXT: ret
br i1 %a, label %blue_pill, label %red_pill
blue_pill:
tail call void @callee1()
ret void
red_pill:
call void @callee2()
ret void
}
declare void @callee1()
declare void @callee2()
declare void @callee_with_args(ptr)
|