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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=aarch64-apple-ios -global-isel -global-isel-abort=1 - < %s | FileCheck %s
define void @test_simple_2xs8(i8 *%ptr) {
; CHECK-LABEL: test_simple_2xs8:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #5
; CHECK-NEXT: strb w8, [x0]
; CHECK-NEXT: strb w9, [x0, #1]
; CHECK-NEXT: ret
%addr1 = getelementptr i8, i8 *%ptr, i64 0
store i8 4, i8 *%addr1
%addr2 = getelementptr i8, i8 *%ptr, i64 1
store i8 5, i8 *%addr2
ret void
}
define void @test_simple_2xs16(i16 *%ptr) {
; CHECK-LABEL: test_simple_2xs16:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: movk w8, #5, lsl #16
; CHECK-NEXT: str w8, [x0]
; CHECK-NEXT: ret
%addr1 = getelementptr i16, i16 *%ptr, i64 0
store i16 4, i16 *%addr1
%addr2 = getelementptr i16, i16 *%ptr, i64 1
store i16 5, i16 *%addr2
ret void
}
define void @test_simple_4xs16(i16 *%ptr) {
; CHECK-LABEL: test_simple_4xs16:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov x8, #4
; CHECK-NEXT: movk x8, #5, lsl #16
; CHECK-NEXT: movk x8, #9, lsl #32
; CHECK-NEXT: movk x8, #14, lsl #48
; CHECK-NEXT: str x8, [x0]
; CHECK-NEXT: ret
%addr1 = getelementptr i16, i16 *%ptr, i64 0
store i16 4, i16 *%addr1
%addr2 = getelementptr i16, i16 *%ptr, i64 1
store i16 5, i16 *%addr2
%addr3 = getelementptr i16, i16 *%ptr, i64 2
store i16 9, i16 *%addr3
%addr4 = getelementptr i16, i16 *%ptr, i64 3
store i16 14, i16 *%addr4
ret void
}
define void @test_simple_2xs32(i32 *%ptr) {
; CHECK-LABEL: test_simple_2xs32:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov x8, #4
; CHECK-NEXT: movk x8, #5, lsl #32
; CHECK-NEXT: str x8, [x0]
; CHECK-NEXT: ret
%addr1 = getelementptr i32, i32 *%ptr, i64 0
store i32 4, i32 *%addr1
%addr2 = getelementptr i32, i32 *%ptr, i64 1
store i32 5, i32 *%addr2
ret void
}
define void @test_simple_2xs64_illegal(i64 *%ptr) {
; CHECK-LABEL: test_simple_2xs64_illegal:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #5
; CHECK-NEXT: stp x8, x9, [x0]
; CHECK-NEXT: ret
%addr1 = getelementptr i64, i64 *%ptr, i64 0
store i64 4, i64 *%addr1
%addr2 = getelementptr i64, i64 *%ptr, i64 1
store i64 5, i64 *%addr2
ret void
}
; Don't merge vectors...yet.
define void @test_simple_vector(<2 x i16> *%ptr) {
; CHECK-LABEL: test_simple_vector:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #7
; CHECK-NEXT: mov w10, #5
; CHECK-NEXT: mov w11, #8
; CHECK-NEXT: strh w8, [x0]
; CHECK-NEXT: strh w9, [x0, #2]
; CHECK-NEXT: strh w10, [x0, #4]
; CHECK-NEXT: strh w11, [x0, #6]
; CHECK-NEXT: ret
%addr1 = getelementptr <2 x i16>, <2 x i16> *%ptr, i64 0
store <2 x i16> <i16 4, i16 7>, <2 x i16> *%addr1
%addr2 = getelementptr <2 x i16>, <2 x i16> *%ptr, i64 1
store <2 x i16> <i16 5, i16 8>, <2 x i16> *%addr2
ret void
}
define i32 @test_unknown_alias(i32 *%ptr, i32 *%aliasptr) {
; CHECK-LABEL: test_unknown_alias:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w9, #4
; CHECK-NEXT: mov x8, x0
; CHECK-NEXT: str w9, [x0]
; CHECK-NEXT: mov w9, #5
; CHECK-NEXT: ldr w0, [x1]
; CHECK-NEXT: str w9, [x8, #4]
; CHECK-NEXT: ret
%addr1 = getelementptr i32, i32 *%ptr, i64 0
store i32 4, i32 *%addr1
%ld = load i32, i32 *%aliasptr
%addr2 = getelementptr i32, i32 *%ptr, i64 1
store i32 5, i32 *%addr2
ret i32 %ld
}
define void @test_2x_2xs32(i32 *%ptr, i32 *%ptr2) {
; CHECK-LABEL: test_2x_2xs32:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov x10, #9
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #5
; CHECK-NEXT: movk x10, #17, lsl #32
; CHECK-NEXT: stp w8, w9, [x0]
; CHECK-NEXT: str x10, [x1]
; CHECK-NEXT: ret
%addr1 = getelementptr i32, i32 *%ptr, i64 0
store i32 4, i32 *%addr1
%addr2 = getelementptr i32, i32 *%ptr, i64 1
store i32 5, i32 *%addr2
%addr3 = getelementptr i32, i32 *%ptr2, i64 0
store i32 9, i32 *%addr3
%addr4 = getelementptr i32, i32 *%ptr2, i64 1
store i32 17, i32 *%addr4
ret void
}
define void @test_simple_var_2xs8(i8 *%ptr, i8 %v1, i8 %v2) {
; CHECK-LABEL: test_simple_var_2xs8:
; CHECK: ; %bb.0:
; CHECK-NEXT: strb w1, [x0]
; CHECK-NEXT: strb w2, [x0, #1]
; CHECK-NEXT: ret
%addr1 = getelementptr i8, i8 *%ptr, i64 0
store i8 %v1, i8 *%addr1
%addr2 = getelementptr i8, i8 *%ptr, i64 1
store i8 %v2, i8 *%addr2
ret void
}
define void @test_simple_var_2xs16(i16 *%ptr, i16 %v1, i16 %v2) {
; CHECK-LABEL: test_simple_var_2xs16:
; CHECK: ; %bb.0:
; CHECK-NEXT: strh w1, [x0]
; CHECK-NEXT: strh w2, [x0, #2]
; CHECK-NEXT: ret
%addr1 = getelementptr i16, i16 *%ptr, i64 0
store i16 %v1, i16 *%addr1
%addr2 = getelementptr i16, i16 *%ptr, i64 1
store i16 %v2, i16 *%addr2
ret void
}
define void @test_simple_var_2xs32(i32 *%ptr, i32 %v1, i32 %v2) {
; CHECK-LABEL: test_simple_var_2xs32:
; CHECK: ; %bb.0:
; CHECK-NEXT: stp w1, w2, [x0]
; CHECK-NEXT: ret
%addr1 = getelementptr i32, i32 *%ptr, i64 0
store i32 %v1, i32 *%addr1
%addr2 = getelementptr i32, i32 *%ptr, i64 1
store i32 %v2, i32 *%addr2
ret void
}
; The store to ptr2 prevents merging into a single store.
; We can still merge the stores into addr1 and addr2.
define void @test_alias_4xs16(i16 *%ptr, i16 *%ptr2) {
; CHECK-LABEL: test_alias_4xs16:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #9
; CHECK-NEXT: movk w8, #5, lsl #16
; CHECK-NEXT: mov w10, #14
; CHECK-NEXT: strh w9, [x0, #4]
; CHECK-NEXT: str w8, [x0]
; CHECK-NEXT: strh wzr, [x1]
; CHECK-NEXT: strh w10, [x0, #6]
; CHECK-NEXT: ret
%addr1 = getelementptr i16, i16 *%ptr, i64 0
store i16 4, i16 *%addr1
%addr2 = getelementptr i16, i16 *%ptr, i64 1
store i16 5, i16 *%addr2
%addr3 = getelementptr i16, i16 *%ptr, i64 2
store i16 9, i16 *%addr3
store i16 0, i16 *%ptr2
%addr4 = getelementptr i16, i16 *%ptr, i64 3
store i16 14, i16 *%addr4
ret void
}
; Here store of 5 and 9 can be merged, others have aliasing barriers.
define void @test_alias2_4xs16(i16 *%ptr, i16 *%ptr2, i16* %ptr3) {
; CHECK-LABEL: test_alias2_4xs16:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #5
; CHECK-NEXT: movk w9, #9, lsl #16
; CHECK-NEXT: strh w8, [x0]
; CHECK-NEXT: mov w8, #14
; CHECK-NEXT: strh wzr, [x2]
; CHECK-NEXT: stur w9, [x0, #2]
; CHECK-NEXT: strh wzr, [x1]
; CHECK-NEXT: strh w8, [x0, #6]
; CHECK-NEXT: ret
%addr1 = getelementptr i16, i16 *%ptr, i64 0
store i16 4, i16 *%addr1
%addr2 = getelementptr i16, i16 *%ptr, i64 1
store i16 0, i16 *%ptr3
store i16 5, i16 *%addr2
%addr3 = getelementptr i16, i16 *%ptr, i64 2
store i16 9, i16 *%addr3
store i16 0, i16 *%ptr2
%addr4 = getelementptr i16, i16 *%ptr, i64 3
store i16 14, i16 *%addr4
ret void
}
; No merging can be done here.
define void @test_alias3_4xs16(i16 *%ptr, i16 *%ptr2, i16 *%ptr3, i16 *%ptr4) {
; CHECK-LABEL: test_alias3_4xs16:
; CHECK: ; %bb.0:
; CHECK-NEXT: mov w8, #4
; CHECK-NEXT: mov w9, #5
; CHECK-NEXT: strh w8, [x0]
; CHECK-NEXT: mov w8, #9
; CHECK-NEXT: strh wzr, [x2]
; CHECK-NEXT: strh w9, [x0, #2]
; CHECK-NEXT: mov w9, #14
; CHECK-NEXT: strh wzr, [x3]
; CHECK-NEXT: strh w8, [x0, #4]
; CHECK-NEXT: strh wzr, [x1]
; CHECK-NEXT: strh w9, [x0, #6]
; CHECK-NEXT: ret
%addr1 = getelementptr i16, i16 *%ptr, i64 0
store i16 4, i16 *%addr1
%addr2 = getelementptr i16, i16 *%ptr, i64 1
store i16 0, i16 *%ptr3
store i16 5, i16 *%addr2
store i16 0, i16 *%ptr4
%addr3 = getelementptr i16, i16 *%ptr, i64 2
store i16 9, i16 *%addr3
store i16 0, i16 *%ptr2
%addr4 = getelementptr i16, i16 *%ptr, i64 3
store i16 14, i16 *%addr4
ret void
}
; Can merge because the load is from a different alloca and can't alias.
define i32 @test_alias_allocas_2xs32(i32 *%ptr) {
; CHECK-LABEL: test_alias_allocas_2xs32:
; CHECK: ; %bb.0:
; CHECK-NEXT: sub sp, sp, #32
; CHECK-NEXT: .cfi_def_cfa_offset 32
; CHECK-NEXT: mov x8, #4
; CHECK-NEXT: ldr w0, [sp, #4]
; CHECK-NEXT: movk x8, #5, lsl #32
; CHECK-NEXT: str x8, [sp, #8]
; CHECK-NEXT: add sp, sp, #32
; CHECK-NEXT: ret
%a1 = alloca [6 x i32]
%a2 = alloca i32, align 4
%addr1 = getelementptr [6 x i32], [6 x i32] *%a1, i64 0, i32 0
store i32 4, i32 *%addr1
%ld = load i32, i32 *%a2
%addr2 = getelementptr [6 x i32], [6 x i32] *%a1, i64 0, i32 1
store i32 5, i32 *%addr2
ret i32 %ld
}
define void @test_volatile(i32 **%ptr) {
; CHECK-LABEL: test_volatile:
; CHECK: ; %bb.0: ; %entry
; CHECK-NEXT: ldr x8, [x0]
; CHECK-NEXT: str wzr, [x8]
; CHECK-NEXT: str wzr, [x8, #4]
; CHECK-NEXT: ret
entry:
%0 = load i32*, i32** %ptr, align 8
store volatile i32 0, i32* %0, align 4;
%1 = bitcast i32** %ptr to i8**
%add.ptr.i.i38 = getelementptr inbounds i32, i32* %0, i64 1
store volatile i32 0, i32* %add.ptr.i.i38, align 4
ret void
}
define void @test_atomic(i32 **%ptr) {
; CHECK-LABEL: test_atomic:
; CHECK: ; %bb.0: ; %entry
; CHECK-NEXT: ldr x8, [x0]
; CHECK-NEXT: add x9, x8, #4
; CHECK-NEXT: stlr wzr, [x8]
; CHECK-NEXT: stlr wzr, [x9]
; CHECK-NEXT: ret
entry:
%0 = load i32*, i32** %ptr, align 8
store atomic i32 0, i32* %0 release, align 4;
%1 = bitcast i32** %ptr to i8**
%add.ptr.i.i38 = getelementptr inbounds i32, i32* %0, i64 1
store atomic i32 0, i32* %add.ptr.i.i38 release, align 4
ret void
}
|
