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
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64-apple-ios -global-isel -global-isel-abort=1 | FileCheck %s
define dso_local void @trunc_i16_to_i8(i16 %x, i8* %p) {
; CHECK-LABEL: trunc_i16_to_i8:
; CHECK: ; %bb.0:
; CHECK-NEXT: strh w0, [x1]
; CHECK-NEXT: ret
%t1 = trunc i16 %x to i8
%sh = lshr i16 %x, 8
%t2 = trunc i16 %sh to i8
store i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p, i64 1
store i8 %t2, i8* %p1, align 1
ret void
}
define dso_local void @trunc_i32_to_i8(i32 %x, i8* %p) {
; CHECK-LABEL: trunc_i32_to_i8:
; CHECK: ; %bb.0:
; CHECK-NEXT: str w0, [x1]
; CHECK-NEXT: ret
%t1 = trunc i32 %x to i8
%sh1 = lshr i32 %x, 8
%t2 = trunc i32 %sh1 to i8
%sh2 = lshr i32 %x, 16
%t3 = trunc i32 %sh2 to i8
%sh3 = lshr i32 %x, 24
%t4 = trunc i32 %sh3 to i8
store i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p, i64 1
store i8 %t2, i8* %p1, align 1
%p2 = getelementptr inbounds i8, i8* %p, i64 2
store i8 %t3, i8* %p2, align 1
%p3 = getelementptr inbounds i8, i8* %p, i64 3
store i8 %t4, i8* %p3, align 1
ret void
}
define dso_local void @trunc_i32_to_i16(i32 %x, i16* %p) {
; CHECK-LABEL: trunc_i32_to_i16:
; CHECK: ; %bb.0:
; CHECK-NEXT: str w0, [x1]
; CHECK-NEXT: ret
%t1 = trunc i32 %x to i16
%sh = lshr i32 %x, 16
%t2 = trunc i32 %sh to i16
store i16 %t1, i16* %p, align 2
%p1 = getelementptr inbounds i16, i16* %p, i64 1
store i16 %t2, i16* %p1, align 2
ret void
}
define dso_local void @be_i32_to_i16(i32 %x, i16* %p0) {
; CHECK-LABEL: be_i32_to_i16:
; CHECK: ; %bb.0:
; CHECK-NEXT: ror w8, w0, #16
; CHECK-NEXT: str w8, [x1]
; CHECK-NEXT: ret
%sh1 = lshr i32 %x, 16
%t0 = trunc i32 %x to i16
%t1 = trunc i32 %sh1 to i16
%p1 = getelementptr inbounds i16, i16* %p0, i64 1
store i16 %t0, i16* %p1, align 2
store i16 %t1, i16* %p0, align 2
ret void
}
define dso_local void @be_i32_to_i16_order(i32 %x, i16* %p0) {
; CHECK-LABEL: be_i32_to_i16_order:
; CHECK: ; %bb.0:
; CHECK-NEXT: ror w8, w0, #16
; CHECK-NEXT: str w8, [x1]
; CHECK-NEXT: ret
%sh1 = lshr i32 %x, 16
%t0 = trunc i32 %x to i16
%t1 = trunc i32 %sh1 to i16
%p1 = getelementptr inbounds i16, i16* %p0, i64 1
store i16 %t1, i16* %p0, align 2
store i16 %t0, i16* %p1, align 2
ret void
}
define dso_local void @trunc_i64_to_i8(i64 %x, i8* %p) {
; CHECK-LABEL: trunc_i64_to_i8:
; CHECK: ; %bb.0:
; CHECK-NEXT: str x0, [x1]
; CHECK-NEXT: ret
%t1 = trunc i64 %x to i8
%sh1 = lshr i64 %x, 8
%t2 = trunc i64 %sh1 to i8
%sh2 = lshr i64 %x, 16
%t3 = trunc i64 %sh2 to i8
%sh3 = lshr i64 %x, 24
%t4 = trunc i64 %sh3 to i8
%sh4 = lshr i64 %x, 32
%t5 = trunc i64 %sh4 to i8
%sh5 = lshr i64 %x, 40
%t6 = trunc i64 %sh5 to i8
%sh6 = lshr i64 %x, 48
%t7 = trunc i64 %sh6 to i8
%sh7 = lshr i64 %x, 56
%t8 = trunc i64 %sh7 to i8
store i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p, i64 1
store i8 %t2, i8* %p1, align 1
%p2 = getelementptr inbounds i8, i8* %p, i64 2
store i8 %t3, i8* %p2, align 1
%p3 = getelementptr inbounds i8, i8* %p, i64 3
store i8 %t4, i8* %p3, align 1
%p4 = getelementptr inbounds i8, i8* %p, i64 4
store i8 %t5, i8* %p4, align 1
%p5 = getelementptr inbounds i8, i8* %p, i64 5
store i8 %t6, i8* %p5, align 1
%p6 = getelementptr inbounds i8, i8* %p, i64 6
store i8 %t7, i8* %p6, align 1
%p7 = getelementptr inbounds i8, i8* %p, i64 7
store i8 %t8, i8* %p7, align 1
ret void
}
define dso_local void @trunc_i64_to_i16(i64 %x, i16* %p) {
; CHECK-LABEL: trunc_i64_to_i16:
; CHECK: ; %bb.0:
; CHECK-NEXT: str x0, [x1]
; CHECK-NEXT: ret
%t1 = trunc i64 %x to i16
%sh1 = lshr i64 %x, 16
%t2 = trunc i64 %sh1 to i16
%sh2 = lshr i64 %x, 32
%t3 = trunc i64 %sh2 to i16
%sh3 = lshr i64 %x, 48
%t4 = trunc i64 %sh3 to i16
store i16 %t1, i16* %p, align 2
%p1 = getelementptr inbounds i16, i16* %p, i64 1
store i16 %t2, i16* %p1, align 2
%p2 = getelementptr inbounds i16, i16* %p, i64 2
store i16 %t3, i16* %p2, align 2
%p3 = getelementptr inbounds i16, i16* %p, i64 3
store i16 %t4, i16* %p3, align 2
ret void
}
define dso_local void @trunc_i64_to_i32(i64 %x, i32* %p) {
; CHECK-LABEL: trunc_i64_to_i32:
; CHECK: ; %bb.0:
; CHECK-NEXT: str x0, [x1]
; CHECK-NEXT: ret
%t1 = trunc i64 %x to i32
%sh = lshr i64 %x, 32
%t2 = trunc i64 %sh to i32
store i32 %t1, i32* %p, align 4
%p1 = getelementptr inbounds i32, i32* %p, i64 1
store i32 %t2, i32* %p1, align 4
ret void
}
define dso_local void @be_i64_to_i32(i64 %x, i32* %p0) {
; CHECK-LABEL: be_i64_to_i32:
; CHECK: ; %bb.0:
; CHECK-NEXT: ror x8, x0, #32
; CHECK-NEXT: str x8, [x1]
; CHECK-NEXT: ret
%sh1 = lshr i64 %x, 32
%t0 = trunc i64 %x to i32
%t1 = trunc i64 %sh1 to i32
%p1 = getelementptr inbounds i32, i32* %p0, i64 1
store i32 %t0, i32* %p1, align 4
store i32 %t1, i32* %p0, align 4
ret void
}
define dso_local void @be_i64_to_i32_order(i64 %x, i32* %p0) {
; CHECK-LABEL: be_i64_to_i32_order:
; CHECK: ; %bb.0:
; CHECK-NEXT: ror x8, x0, #32
; CHECK-NEXT: str x8, [x1]
; CHECK-NEXT: ret
%sh1 = lshr i64 %x, 32
%t0 = trunc i64 %x to i32
%t1 = trunc i64 %sh1 to i32
%p1 = getelementptr inbounds i32, i32* %p0, i64 1
store i32 %t1, i32* %p0, align 4
store i32 %t0, i32* %p1, align 4
ret void
}
; Negative tests.
define void @merge_hole(i32 %x, i8* %p) {
; CHECK-LABEL: merge_hole:
; CHECK: ; %bb.0:
; CHECK-NEXT: lsr w8, w0, #16
; CHECK-NEXT: strb w0, [x1]
; CHECK-NEXT: strh w8, [x1, #2]
; CHECK-NEXT: ret
%pcast = bitcast i8* %p to i16*
%p2 = getelementptr inbounds i16, i16* %pcast, i64 1
%x3 = trunc i32 %x to i8
store i8 %x3, i8* %p, align 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, i16* %p2, align 1
ret void
}
define void @merge_hole2(i32 %x, i8* %p) {
; CHECK-LABEL: merge_hole2:
; CHECK: ; %bb.0:
; CHECK-NEXT: lsr w8, w0, #16
; CHECK-NEXT: strb w0, [x1]
; CHECK-NEXT: strh w8, [x1, #2]
; CHECK-NEXT: ret
%pcast = bitcast i8* %p to i16*
%p2 = getelementptr inbounds i16, i16* %pcast, i64 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, i16* %p2, align 1
%x3 = trunc i32 %x to i8
store i8 %x3, i8* %p, align 1
ret void
}
define void @merge_hole3(i32 %x, i8* %p) {
; CHECK-LABEL: merge_hole3:
; CHECK: ; %bb.0:
; CHECK-NEXT: lsr w8, w0, #16
; CHECK-NEXT: strb w0, [x1, #1]
; CHECK-NEXT: strh w8, [x1, #2]
; CHECK-NEXT: ret
%p1 = getelementptr inbounds i8, i8* %p, i64 1
%pcast = bitcast i8* %p to i16*
%p2 = getelementptr inbounds i16, i16* %pcast, i64 1
%x3 = trunc i32 %x to i8
store i8 %x3, i8* %p1, align 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, i16* %p2, align 1
ret void
}
define void @merge_hole4(i32 %x, i8* %p) {
; CHECK-LABEL: merge_hole4:
; CHECK: ; %bb.0:
; CHECK-NEXT: lsr w8, w0, #16
; CHECK-NEXT: strb w0, [x1, #2]
; CHECK-NEXT: strh w8, [x1]
; CHECK-NEXT: ret
%pcast = bitcast i8* %p to i16*
%p2 = getelementptr inbounds i8, i8* %p, i64 2
%x3 = trunc i32 %x to i8
store i8 %x3, i8* %p2, align 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, i16* %pcast, align 1
ret void
}
define dso_local i32 @load_between_stores(i32 %x, i16* %p, i32 *%ptr) {
; CHECK-LABEL: load_between_stores:
; CHECK: ; %bb.0:
; CHECK-NEXT: strh w0, [x1]
; CHECK-NEXT: lsr w9, w0, #16
; CHECK-NEXT: ldr w8, [x2]
; CHECK-NEXT: strh w9, [x1, #2]
; CHECK-NEXT: mov w0, w8
; CHECK-NEXT: ret
%t1 = trunc i32 %x to i16
%sh = lshr i32 %x, 16
%t2 = trunc i32 %sh to i16
store i16 %t1, i16* %p, align 2
%ld = load i32, i32 *%ptr
%p1 = getelementptr inbounds i16, i16* %p, i64 1
store i16 %t2, i16* %p1, align 2
ret i32 %ld
}
define dso_local void @invalid_shift(i16 %x, i8* %p) {
; CHECK-LABEL: invalid_shift:
; CHECK: ; %bb.0:
; CHECK-NEXT: ubfx w8, w0, #4, #12
; CHECK-NEXT: strb w0, [x1]
; CHECK-NEXT: strb w8, [x1, #1]
; CHECK-NEXT: ret
%t1 = trunc i16 %x to i8
%sh = lshr i16 %x, 4
%t2 = trunc i16 %sh to i8
store i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p, i64 1
store i8 %t2, i8* %p1, align 1
ret void
}
define dso_local void @missing_store(i32 %x, i8* %p) {
; CHECK-LABEL: missing_store:
; CHECK: ; %bb.0:
; CHECK-NEXT: lsr w8, w0, #8
; CHECK-NEXT: lsr w9, w0, #24
; CHECK-NEXT: strb w0, [x1]
; CHECK-NEXT: strb w8, [x1, #1]
; CHECK-NEXT: strb w9, [x1, #3]
; CHECK-NEXT: ret
%t1 = trunc i32 %x to i8
%sh1 = lshr i32 %x, 8
%t2 = trunc i32 %sh1 to i8
%sh3 = lshr i32 %x, 24
%t4 = trunc i32 %sh3 to i8
store i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p, i64 1
store i8 %t2, i8* %p1, align 1
%p3 = getelementptr inbounds i8, i8* %p, i64 3
store i8 %t4, i8* %p3, align 1
ret void
}
define dso_local void @different_base_reg(i16 %x, i8* %p, i8 *%p2) {
; CHECK-LABEL: different_base_reg:
; CHECK: ; %bb.0:
; CHECK-NEXT: ubfx w8, w0, #8, #8
; CHECK-NEXT: strb w0, [x1]
; CHECK-NEXT: strb w8, [x2, #1]
; CHECK-NEXT: ret
%t1 = trunc i16 %x to i8
%sh = lshr i16 %x, 8
%t2 = trunc i16 %sh to i8
store i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p2, i64 1
store i8 %t2, i8* %p1, align 1
ret void
}
define dso_local void @second_store_is_volatile(i16 %x, i8* %p) {
; CHECK-LABEL: second_store_is_volatile:
; CHECK: ; %bb.0:
; CHECK-NEXT: ubfx w8, w0, #8, #8
; CHECK-NEXT: strb w0, [x1]
; CHECK-NEXT: strb w8, [x1, #1]
; CHECK-NEXT: ret
%t1 = trunc i16 %x to i8
%sh = lshr i16 %x, 8
%t2 = trunc i16 %sh to i8
store volatile i8 %t1, i8* %p, align 1
%p1 = getelementptr inbounds i8, i8* %p, i64 1
store i8 %t2, i8* %p1, align 1
ret void
}
|
