add-shl-sdiv-to-srem.ll
7.69 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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
define i8 @add-shl-sdiv-scalar0(i8 %x) {
; CHECK-LABEL: @add-shl-sdiv-scalar0(
; CHECK-NEXT: [[RZ:%.*]] = srem i8 [[X:%.*]], 4
; CHECK-NEXT: ret i8 [[RZ]]
;
%sd = sdiv i8 %x, -4
%sl = shl i8 %sd, 2
%rz = add i8 %sl, %x
ret i8 %rz
}
define i8 @add-shl-sdiv-scalar1(i8 %x) {
; CHECK-LABEL: @add-shl-sdiv-scalar1(
; CHECK-NEXT: [[RZ:%.*]] = srem i8 [[X:%.*]], 64
; CHECK-NEXT: ret i8 [[RZ]]
;
%sd = sdiv i8 %x, -64
%sl = shl i8 %sd, 6
%rz = add i8 %sl, %x
ret i8 %rz
}
define i32 @add-shl-sdiv-scalar2(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-scalar2(
; CHECK-NEXT: [[RZ:%.*]] = srem i32 [[X:%.*]], 1073741824
; CHECK-NEXT: ret i32 [[RZ]]
;
%sd = sdiv i32 %x, -1073741824
%sl = shl i32 %sd, 30
%rz = add i32 %sl, %x
ret i32 %rz
}
; Splat vectors
define <3 x i8> @add-shl-sdiv-splat0(<3 x i8> %x) {
; CHECK-LABEL: @add-shl-sdiv-splat0(
; CHECK-NEXT: [[RZ:%.*]] = srem <3 x i8> [[X:%.*]], <i8 4, i8 4, i8 4>
; CHECK-NEXT: ret <3 x i8> [[RZ]]
;
%sd = sdiv <3 x i8> %x, <i8 -4, i8 -4, i8 -4>
%sl = shl <3 x i8> %sd, <i8 2, i8 2, i8 2>
%rz = add <3 x i8> %sl, %x
ret <3 x i8> %rz
}
define <4 x i32> @add-shl-sdiv-splat1(<4 x i32> %x) {
; CHECK-LABEL: @add-shl-sdiv-splat1(
; CHECK-NEXT: [[RZ:%.*]] = srem <4 x i32> [[X:%.*]], <i32 1073741824, i32 1073741824, i32 1073741824, i32 1073741824>
; CHECK-NEXT: ret <4 x i32> [[RZ]]
;
%sd = sdiv <4 x i32> %x, <i32 -1073741824, i32 -1073741824, i32 -1073741824, i32 -1073741824>
%sl = shl <4 x i32> %sd, <i32 30, i32 30, i32 30, i32 30>
%rz = add <4 x i32> %sl, %x
ret <4 x i32> %rz
}
define <2 x i64> @add-shl-sdiv-splat2(<2 x i64> %x) {
; CHECK-LABEL: @add-shl-sdiv-splat2(
; CHECK-NEXT: [[RZ:%.*]] = srem <2 x i64> [[X:%.*]], <i64 32, i64 32>
; CHECK-NEXT: ret <2 x i64> [[RZ]]
;
%sd = sdiv <2 x i64> %x, <i64 -32, i64 -32>
%sl = shl <2 x i64> %sd, <i64 5, i64 5>
%rz = add <2 x i64> %sl, %x
ret <2 x i64> %rz
}
; One-use tests
declare void @use32(i32)
define i32 @add-shl-sdiv-i32-4-use0(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-i32-4-use0(
; CHECK-NEXT: call void @use32(i32 [[X:%.*]])
; CHECK-NEXT: [[RZ:%.*]] = srem i32 [[X]], 16
; CHECK-NEXT: ret i32 [[RZ]]
;
call void @use32(i32 %x)
%sd = sdiv i32 %x, -16
%sl = shl i32 %sd, 4
%rz = add i32 %sl, %x
ret i32 %rz
}
define i32 @add-shl-sdiv-i32-use1(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-i32-use1(
; CHECK-NEXT: [[SD:%.*]] = sdiv i32 [[X:%.*]], -16
; CHECK-NEXT: call void @use32(i32 [[SD]])
; CHECK-NEXT: [[RZ:%.*]] = srem i32 [[X]], 16
; CHECK-NEXT: ret i32 [[RZ]]
;
%sd = sdiv i32 %x, -16
call void @use32(i32 %sd)
%sl = shl i32 %sd, 4
%rz = add i32 %sl, %x
ret i32 %rz
}
define i32 @add-shl-sdiv-i32-use2(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-i32-use2(
; CHECK-NEXT: [[SD:%.*]] = sdiv i32 [[X:%.*]], -16
; CHECK-NEXT: [[SL:%.*]] = shl i32 [[SD]], 4
; CHECK-NEXT: call void @use32(i32 [[SL]])
; CHECK-NEXT: [[RZ:%.*]] = srem i32 [[X]], 16
; CHECK-NEXT: ret i32 [[RZ]]
;
%sd = sdiv i32 %x, -16
%sl = shl i32 %sd, 4
call void @use32(i32 %sl)
%rz = add i32 %sl, %x
ret i32 %rz
}
define i32 @add-shl-sdiv-i32-use3(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-i32-use3(
; CHECK-NEXT: [[SD:%.*]] = sdiv i32 [[X:%.*]], -16
; CHECK-NEXT: call void @use32(i32 [[SD]])
; CHECK-NEXT: [[SL:%.*]] = shl i32 [[SD]], 4
; CHECK-NEXT: call void @use32(i32 [[SL]])
; CHECK-NEXT: [[RZ:%.*]] = srem i32 [[X]], 16
; CHECK-NEXT: ret i32 [[RZ]]
;
%sd = sdiv i32 %x, -16
call void @use32(i32 %sd)
%sl = shl i32 %sd, 4
call void @use32(i32 %sl)
%rz = add i32 %sl, %x
ret i32 %rz
}
declare void @use3xi8(<3 x i8>)
define <3 x i8> @add-shl-sdiv-use4(<3 x i8> %x) {
; CHECK-LABEL: @add-shl-sdiv-use4(
; CHECK-NEXT: [[SD:%.*]] = sdiv <3 x i8> [[X:%.*]], <i8 -4, i8 -4, i8 -4>
; CHECK-NEXT: call void @use3xi8(<3 x i8> [[SD]])
; CHECK-NEXT: [[RZ:%.*]] = srem <3 x i8> [[X]], <i8 4, i8 4, i8 4>
; CHECK-NEXT: ret <3 x i8> [[RZ]]
;
%sd = sdiv <3 x i8> %x, <i8 -4, i8 -4, i8 -4>
call void @use3xi8(<3 x i8> %sd)
%sl = shl <3 x i8> %sd, <i8 2, i8 2, i8 2>
%rz = add <3 x i8> %sl, %x
ret <3 x i8> %rz
}
; Negative
define i8 @add-shl-sdiv-negative0(i8 %x) {
; CHECK-LABEL: @add-shl-sdiv-negative0(
; CHECK-NEXT: [[SD:%.*]] = sdiv i8 [[X:%.*]], 4
; CHECK-NEXT: [[SL:%.*]] = shl nsw i8 [[SD]], 2
; CHECK-NEXT: [[RZ:%.*]] = add i8 [[SL]], [[X]]
; CHECK-NEXT: ret i8 [[RZ]]
;
%sd = sdiv i8 %x, 4
%sl = shl i8 %sd, 2
%rz = add i8 %sl, %x
ret i8 %rz
}
define i32 @add-shl-sdiv-negative1(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-negative1(
; CHECK-NEXT: [[RZ:%.*]] = sub i32 0, [[X:%.*]]
; CHECK-NEXT: ret i32 [[RZ]]
;
%sd = sdiv i32 %x, -1
%sl = shl i32 %sd, 1
%rz = add i32 %sl, %x
ret i32 %rz
}
define i32 @add-shl-sdiv-negative2(i32 %x) {
; CHECK-LABEL: @add-shl-sdiv-negative2(
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[X:%.*]], -2147483648
; CHECK-NEXT: [[SL:%.*]] = select i1 [[TMP1]], i32 -2147483648, i32 0
; CHECK-NEXT: [[RZ:%.*]] = add i32 [[SL]], [[X]]
; CHECK-NEXT: ret i32 [[RZ]]
;
%sd = sdiv i32 %x, -2147483648
%sl = shl i32 %sd, 31
%rz = add i32 %sl, %x
ret i32 %rz
}
define <3 x i8> @add-shl-sdiv-negative3(<3 x i8> %x) {
; CHECK-LABEL: @add-shl-sdiv-negative3(
; CHECK-NEXT: [[SD:%.*]] = sdiv <3 x i8> [[X:%.*]], <i8 -5, i8 -5, i8 -5>
; CHECK-NEXT: [[SL:%.*]] = shl <3 x i8> [[SD]], <i8 2, i8 2, i8 2>
; CHECK-NEXT: [[RZ:%.*]] = add <3 x i8> [[SL]], [[X]]
; CHECK-NEXT: ret <3 x i8> [[RZ]]
;
%sd = sdiv <3 x i8> %x, <i8 -5, i8 -5, i8 -5>
%sl = shl <3 x i8> %sd, <i8 2, i8 2, i8 2>
%rz = add <3 x i8> %sl, %x
ret <3 x i8> %rz
}
define <2 x i64> @add-shl-sdiv-negative4(<2 x i64> %x) {
; CHECK-LABEL: @add-shl-sdiv-negative4(
; CHECK-NEXT: ret <2 x i64> undef
;
%sd = sdiv <2 x i64> %x, <i64 32, i64 32>
%sl = shl <2 x i64> %sd, <i64 -5, i64 -5>
%rz = add <2 x i64> %sl, %x
ret <2 x i64> %rz
}
; Vectors with undef values
define <3 x i8> @add-shl-sdiv-3xi8-undef0(<3 x i8> %x) {
; CHECK-LABEL: @add-shl-sdiv-3xi8-undef0(
; CHECK-NEXT: ret <3 x i8> [[X:%.*]]
;
%sd = sdiv <3 x i8> %x, <i8 -4, i8 undef, i8 -4>
%sl = shl <3 x i8> %sd, <i8 2, i8 2, i8 2>
%rz = add <3 x i8> %sl, %x
ret <3 x i8> %rz
}
define <3 x i8> @add-shl-sdiv-3xi8-undef1(<3 x i8> %x) {
; CHECK-LABEL: @add-shl-sdiv-3xi8-undef1(
; CHECK-NEXT: [[SD:%.*]] = sdiv <3 x i8> [[X:%.*]], <i8 -4, i8 -4, i8 -4>
; CHECK-NEXT: [[SL:%.*]] = shl <3 x i8> [[SD]], <i8 2, i8 undef, i8 2>
; CHECK-NEXT: [[RZ:%.*]] = add <3 x i8> [[SL]], [[X]]
; CHECK-NEXT: ret <3 x i8> [[RZ]]
;
%sd = sdiv <3 x i8> %x, <i8 -4, i8 -4, i8 -4>
%sl = shl <3 x i8> %sd, <i8 2, i8 undef, i8 2>
%rz = add <3 x i8> %sl, %x
ret <3 x i8> %rz
}
; Non-splat vectors
define <2 x i64> @add-shl-sdiv-nonsplat0(<2 x i64> %x) {
; CHECK-LABEL: @add-shl-sdiv-nonsplat0(
; CHECK-NEXT: [[SD:%.*]] = sdiv <2 x i64> [[X:%.*]], <i64 -32, i64 -64>
; CHECK-NEXT: [[SL:%.*]] = shl <2 x i64> [[SD]], <i64 5, i64 6>
; CHECK-NEXT: [[RZ:%.*]] = add <2 x i64> [[SL]], [[X]]
; CHECK-NEXT: ret <2 x i64> [[RZ]]
;
%sd = sdiv <2 x i64> %x, <i64 -32, i64 -64>
%sl = shl <2 x i64> %sd, <i64 5, i64 6>
%rz = add <2 x i64> %sl, %x
ret <2 x i64> %rz
}
define <3 x i8> @add-shl-sdiv-nonsplat1(<3 x i8> %x) {
; CHECK-LABEL: @add-shl-sdiv-nonsplat1(
; CHECK-NEXT: [[SD:%.*]] = sdiv <3 x i8> [[X:%.*]], <i8 -4, i8 -4, i8 -4>
; CHECK-NEXT: [[SL:%.*]] = shl <3 x i8> [[SD]], <i8 2, i8 2, i8 3>
; CHECK-NEXT: [[RZ:%.*]] = add <3 x i8> [[SL]], [[X]]
; CHECK-NEXT: ret <3 x i8> [[RZ]]
;
%sd = sdiv <3 x i8> %x, <i8 -4, i8 -4, i8 -4>
%sl = shl <3 x i8> %sd, <i8 2, i8 2, i8 3>
%rz = add <3 x i8> %sl, %x
ret <3 x i8> %rz
}