stores-merging.ll
10.3 KB
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
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx | FileCheck %s
%structTy = type { i8, i32, i32 }
@e = common global %structTy zeroinitializer, align 4
;; Ensure that MergeConsecutiveStores doesn't incorrectly reorder
;; store operations. The first test stores in increasing address
;; order, the second in decreasing -- but in both cases should have
;; the same result in memory in the end.
define void @redundant_stores_merging() {
; CHECK-LABEL: redundant_stores_merging:
; CHECK: # %bb.0:
; CHECK-NEXT: movabsq $1958505086977, %rax # imm = 0x1C800000001
; CHECK-NEXT: movq %rax, e+{{.*}}(%rip)
; CHECK-NEXT: retq
store i32 1, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 1), align 4
store i32 123, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 2), align 4
store i32 456, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 2), align 4
ret void
}
;; This variant tests PR25154.
define void @redundant_stores_merging_reverse() {
; CHECK-LABEL: redundant_stores_merging_reverse:
; CHECK: # %bb.0:
; CHECK-NEXT: movabsq $528280977409, %rax # imm = 0x7B00000001
; CHECK-NEXT: movq %rax, e+{{.*}}(%rip)
; CHECK-NEXT: movl $456, e+{{.*}}(%rip) # imm = 0x1C8
; CHECK-NEXT: retq
store i32 123, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 2), align 4
store i32 456, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 2), align 4
store i32 1, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 1), align 4
ret void
}
@b = common global [8 x i8] zeroinitializer, align 2
;; The 2-byte store to offset 3 overlaps the 2-byte store to offset 2;
;; these must not be reordered in MergeConsecutiveStores such that the
;; store to 3 comes first (e.g. by merging the stores to 0 and 2 into
;; a movl, after the store to 3).
define void @overlapping_stores_merging() {
; CHECK-LABEL: overlapping_stores_merging:
; CHECK: # %bb.0:
; CHECK-NEXT: movl $1, {{.*}}(%rip)
; CHECK-NEXT: movw $2, b+{{.*}}(%rip)
; CHECK-NEXT: retq
store i16 0, i16* bitcast (i8* getelementptr inbounds ([8 x i8], [8 x i8]* @b, i64 0, i64 2) to i16*), align 2
store i16 2, i16* bitcast (i8* getelementptr inbounds ([8 x i8], [8 x i8]* @b, i64 0, i64 3) to i16*), align 1
store i16 1, i16* bitcast (i8* getelementptr inbounds ([8 x i8], [8 x i8]* @b, i64 0, i64 0) to i16*), align 2
ret void
}
define void @extract_vector_store_16_consecutive_bytes(<2 x i64> %v, i8* %ptr) #0 {
; CHECK-LABEL: extract_vector_store_16_consecutive_bytes:
; CHECK: # %bb.0:
; CHECK-NEXT: vmovups %xmm0, (%rdi)
; CHECK-NEXT: retq
%bc = bitcast <2 x i64> %v to <16 x i8>
%ext00 = extractelement <16 x i8> %bc, i32 0
%ext01 = extractelement <16 x i8> %bc, i32 1
%ext02 = extractelement <16 x i8> %bc, i32 2
%ext03 = extractelement <16 x i8> %bc, i32 3
%ext04 = extractelement <16 x i8> %bc, i32 4
%ext05 = extractelement <16 x i8> %bc, i32 5
%ext06 = extractelement <16 x i8> %bc, i32 6
%ext07 = extractelement <16 x i8> %bc, i32 7
%ext08 = extractelement <16 x i8> %bc, i32 8
%ext09 = extractelement <16 x i8> %bc, i32 9
%ext10 = extractelement <16 x i8> %bc, i32 10
%ext11 = extractelement <16 x i8> %bc, i32 11
%ext12 = extractelement <16 x i8> %bc, i32 12
%ext13 = extractelement <16 x i8> %bc, i32 13
%ext14 = extractelement <16 x i8> %bc, i32 14
%ext15 = extractelement <16 x i8> %bc, i32 15
%gep00 = getelementptr inbounds i8, i8* %ptr, i64 0
%gep01 = getelementptr inbounds i8, i8* %ptr, i64 1
%gep02 = getelementptr inbounds i8, i8* %ptr, i64 2
%gep03 = getelementptr inbounds i8, i8* %ptr, i64 3
%gep04 = getelementptr inbounds i8, i8* %ptr, i64 4
%gep05 = getelementptr inbounds i8, i8* %ptr, i64 5
%gep06 = getelementptr inbounds i8, i8* %ptr, i64 6
%gep07 = getelementptr inbounds i8, i8* %ptr, i64 7
%gep08 = getelementptr inbounds i8, i8* %ptr, i64 8
%gep09 = getelementptr inbounds i8, i8* %ptr, i64 9
%gep10 = getelementptr inbounds i8, i8* %ptr, i64 10
%gep11 = getelementptr inbounds i8, i8* %ptr, i64 11
%gep12 = getelementptr inbounds i8, i8* %ptr, i64 12
%gep13 = getelementptr inbounds i8, i8* %ptr, i64 13
%gep14 = getelementptr inbounds i8, i8* %ptr, i64 14
%gep15 = getelementptr inbounds i8, i8* %ptr, i64 15
store i8 %ext00, i8* %gep00, align 1
store i8 %ext01, i8* %gep01, align 1
store i8 %ext02, i8* %gep02, align 1
store i8 %ext03, i8* %gep03, align 1
store i8 %ext04, i8* %gep04, align 1
store i8 %ext05, i8* %gep05, align 1
store i8 %ext06, i8* %gep06, align 1
store i8 %ext07, i8* %gep07, align 1
store i8 %ext08, i8* %gep08, align 1
store i8 %ext09, i8* %gep09, align 1
store i8 %ext10, i8* %gep10, align 1
store i8 %ext11, i8* %gep11, align 1
store i8 %ext12, i8* %gep12, align 1
store i8 %ext13, i8* %gep13, align 1
store i8 %ext14, i8* %gep14, align 1
store i8 %ext15, i8* %gep15, align 1
ret void
}
; PR34217 - https://bugs.llvm.org/show_bug.cgi?id=34217
define void @extract_vector_store_32_consecutive_bytes(<4 x i64> %v, i8* %ptr) #0 {
; CHECK-LABEL: extract_vector_store_32_consecutive_bytes:
; CHECK: # %bb.0:
; CHECK-NEXT: vmovups %ymm0, (%rdi)
; CHECK-NEXT: vzeroupper
; CHECK-NEXT: retq
%bc = bitcast <4 x i64> %v to <32 x i8>
%ext00 = extractelement <32 x i8> %bc, i32 0
%ext01 = extractelement <32 x i8> %bc, i32 1
%ext02 = extractelement <32 x i8> %bc, i32 2
%ext03 = extractelement <32 x i8> %bc, i32 3
%ext04 = extractelement <32 x i8> %bc, i32 4
%ext05 = extractelement <32 x i8> %bc, i32 5
%ext06 = extractelement <32 x i8> %bc, i32 6
%ext07 = extractelement <32 x i8> %bc, i32 7
%ext08 = extractelement <32 x i8> %bc, i32 8
%ext09 = extractelement <32 x i8> %bc, i32 9
%ext10 = extractelement <32 x i8> %bc, i32 10
%ext11 = extractelement <32 x i8> %bc, i32 11
%ext12 = extractelement <32 x i8> %bc, i32 12
%ext13 = extractelement <32 x i8> %bc, i32 13
%ext14 = extractelement <32 x i8> %bc, i32 14
%ext15 = extractelement <32 x i8> %bc, i32 15
%ext16 = extractelement <32 x i8> %bc, i32 16
%ext17 = extractelement <32 x i8> %bc, i32 17
%ext18 = extractelement <32 x i8> %bc, i32 18
%ext19 = extractelement <32 x i8> %bc, i32 19
%ext20 = extractelement <32 x i8> %bc, i32 20
%ext21 = extractelement <32 x i8> %bc, i32 21
%ext22 = extractelement <32 x i8> %bc, i32 22
%ext23 = extractelement <32 x i8> %bc, i32 23
%ext24 = extractelement <32 x i8> %bc, i32 24
%ext25 = extractelement <32 x i8> %bc, i32 25
%ext26 = extractelement <32 x i8> %bc, i32 26
%ext27 = extractelement <32 x i8> %bc, i32 27
%ext28 = extractelement <32 x i8> %bc, i32 28
%ext29 = extractelement <32 x i8> %bc, i32 29
%ext30 = extractelement <32 x i8> %bc, i32 30
%ext31 = extractelement <32 x i8> %bc, i32 31
%gep00 = getelementptr inbounds i8, i8* %ptr, i64 0
%gep01 = getelementptr inbounds i8, i8* %ptr, i64 1
%gep02 = getelementptr inbounds i8, i8* %ptr, i64 2
%gep03 = getelementptr inbounds i8, i8* %ptr, i64 3
%gep04 = getelementptr inbounds i8, i8* %ptr, i64 4
%gep05 = getelementptr inbounds i8, i8* %ptr, i64 5
%gep06 = getelementptr inbounds i8, i8* %ptr, i64 6
%gep07 = getelementptr inbounds i8, i8* %ptr, i64 7
%gep08 = getelementptr inbounds i8, i8* %ptr, i64 8
%gep09 = getelementptr inbounds i8, i8* %ptr, i64 9
%gep10 = getelementptr inbounds i8, i8* %ptr, i64 10
%gep11 = getelementptr inbounds i8, i8* %ptr, i64 11
%gep12 = getelementptr inbounds i8, i8* %ptr, i64 12
%gep13 = getelementptr inbounds i8, i8* %ptr, i64 13
%gep14 = getelementptr inbounds i8, i8* %ptr, i64 14
%gep15 = getelementptr inbounds i8, i8* %ptr, i64 15
%gep16 = getelementptr inbounds i8, i8* %ptr, i64 16
%gep17 = getelementptr inbounds i8, i8* %ptr, i64 17
%gep18 = getelementptr inbounds i8, i8* %ptr, i64 18
%gep19 = getelementptr inbounds i8, i8* %ptr, i64 19
%gep20 = getelementptr inbounds i8, i8* %ptr, i64 20
%gep21 = getelementptr inbounds i8, i8* %ptr, i64 21
%gep22 = getelementptr inbounds i8, i8* %ptr, i64 22
%gep23 = getelementptr inbounds i8, i8* %ptr, i64 23
%gep24 = getelementptr inbounds i8, i8* %ptr, i64 24
%gep25 = getelementptr inbounds i8, i8* %ptr, i64 25
%gep26 = getelementptr inbounds i8, i8* %ptr, i64 26
%gep27 = getelementptr inbounds i8, i8* %ptr, i64 27
%gep28 = getelementptr inbounds i8, i8* %ptr, i64 28
%gep29 = getelementptr inbounds i8, i8* %ptr, i64 29
%gep30 = getelementptr inbounds i8, i8* %ptr, i64 30
%gep31 = getelementptr inbounds i8, i8* %ptr, i64 31
store i8 %ext00, i8* %gep00, align 1
store i8 %ext01, i8* %gep01, align 1
store i8 %ext02, i8* %gep02, align 1
store i8 %ext03, i8* %gep03, align 1
store i8 %ext04, i8* %gep04, align 1
store i8 %ext05, i8* %gep05, align 1
store i8 %ext06, i8* %gep06, align 1
store i8 %ext07, i8* %gep07, align 1
store i8 %ext08, i8* %gep08, align 1
store i8 %ext09, i8* %gep09, align 1
store i8 %ext10, i8* %gep10, align 1
store i8 %ext11, i8* %gep11, align 1
store i8 %ext12, i8* %gep12, align 1
store i8 %ext13, i8* %gep13, align 1
store i8 %ext14, i8* %gep14, align 1
store i8 %ext15, i8* %gep15, align 1
store i8 %ext16, i8* %gep16, align 1
store i8 %ext17, i8* %gep17, align 1
store i8 %ext18, i8* %gep18, align 1
store i8 %ext19, i8* %gep19, align 1
store i8 %ext20, i8* %gep20, align 1
store i8 %ext21, i8* %gep21, align 1
store i8 %ext22, i8* %gep22, align 1
store i8 %ext23, i8* %gep23, align 1
store i8 %ext24, i8* %gep24, align 1
store i8 %ext25, i8* %gep25, align 1
store i8 %ext26, i8* %gep26, align 1
store i8 %ext27, i8* %gep27, align 1
store i8 %ext28, i8* %gep28, align 1
store i8 %ext29, i8* %gep29, align 1
store i8 %ext30, i8* %gep30, align 1
store i8 %ext31, i8* %gep31, align 1
ret void
}
; https://bugs.llvm.org/show_bug.cgi?id=43446
define void @pr43446_0(i64 %x) {
; CHECK-LABEL: pr43446_0:
; CHECK: # %bb.0:
; CHECK-NEXT: movb $1, (%rdi)
; CHECK-NEXT: retq
%a = inttoptr i64 %x to i8*
store i8 -2, i8* %a, align 1
%b = inttoptr i64 %x to i1*
store i1 true, i1* %b, align 1
ret void
}
define void @pr43446_1(i8* %a) {
; CHECK-LABEL: pr43446_1:
; CHECK: # %bb.0:
; CHECK-NEXT: movb $1, (%rdi)
; CHECK-NEXT: retq
store i8 -2, i8* %a, align 1
%b = bitcast i8* %a to i1*
store i1 true, i1* %b, align 1
ret void
}