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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
define i8 @shl_and(i8 %x, i8 %y) {
; CHECK-LABEL: @shl_and(
; CHECK-NEXT: [[TMP1:%.*]] = shl i8 [[X:%.*]], 5
; CHECK-NEXT: [[TMP2:%.*]] = shl i8 [[Y:%.*]], 2
; CHECK-NEXT: [[SH1:%.*]] = and i8 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i8 [[SH1]]
;
%sh0 = shl i8 %x, 3
%r = and i8 %sh0, %y
%sh1 = shl i8 %r, 2
ret i8 %sh1
}
define <2 x i8> @shl_and_nonuniform(<2 x i8> %x, <2 x i8> %y) {
; CHECK-LABEL: @shl_and_nonuniform(
; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i8> [[X:%.*]], <i8 5, i8 4>
; CHECK-NEXT: [[TMP2:%.*]] = shl <2 x i8> [[Y:%.*]], <i8 2, i8 0>
; CHECK-NEXT: [[SH1:%.*]] = and <2 x i8> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <2 x i8> [[SH1]]
;
%sh0 = shl <2 x i8> %x, <i8 3, i8 4>
%r = and <2 x i8> %sh0, %y
%sh1 = shl <2 x i8> %r, <i8 2, i8 0>
ret <2 x i8> %sh1
}
define i16 @shl_or(i16 %x, i16 %py) {
; CHECK-LABEL: @shl_or(
; CHECK-NEXT: [[Y:%.*]] = srem i16 [[PY:%.*]], 42
; CHECK-NEXT: [[TMP1:%.*]] = shl i16 [[X:%.*]], 12
; CHECK-NEXT: [[TMP2:%.*]] = shl nsw i16 [[Y]], 7
; CHECK-NEXT: [[SH1:%.*]] = or i16 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i16 [[SH1]]
;
%y = srem i16 %py, 42 ; thwart complexity-based canonicalization
%sh0 = shl i16 %x, 5
%r = or i16 %y, %sh0
%sh1 = shl i16 %r, 7
ret i16 %sh1
}
define <2 x i16> @shl_or_undef(<2 x i16> %x, <2 x i16> %py) {
; CHECK-LABEL: @shl_or_undef(
; CHECK-NEXT: [[Y:%.*]] = srem <2 x i16> [[PY:%.*]], <i16 42, i16 42>
; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i16> [[X:%.*]], <i16 12, i16 undef>
; CHECK-NEXT: [[TMP2:%.*]] = shl <2 x i16> [[Y]], <i16 7, i16 undef>
; CHECK-NEXT: [[SH1:%.*]] = or <2 x i16> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <2 x i16> [[SH1]]
;
%y = srem <2 x i16> %py, <i16 42, i16 42> ; thwart complexity-based canonicalization
%sh0 = shl <2 x i16> %x, <i16 5, i16 undef>
%r = or <2 x i16> %y, %sh0
%sh1 = shl <2 x i16> %r, <i16 7, i16 undef>
ret <2 x i16> %sh1
}
define i32 @shl_xor(i32 %x, i32 %y) {
; CHECK-LABEL: @shl_xor(
; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[X:%.*]], 12
; CHECK-NEXT: [[TMP2:%.*]] = shl i32 [[Y:%.*]], 7
; CHECK-NEXT: [[SH1:%.*]] = xor i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i32 [[SH1]]
;
%sh0 = shl i32 %x, 5
%r = xor i32 %sh0, %y
%sh1 = shl i32 %r, 7
ret i32 %sh1
}
define <2 x i32> @shl_xor_nonuniform(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @shl_xor_nonuniform(
; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i32> [[X:%.*]], <i32 12, i32 14>
; CHECK-NEXT: [[TMP2:%.*]] = shl <2 x i32> [[Y:%.*]], <i32 7, i32 8>
; CHECK-NEXT: [[SH1:%.*]] = xor <2 x i32> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <2 x i32> [[SH1]]
;
%sh0 = shl <2 x i32> %x, <i32 5, i32 6>
%r = xor <2 x i32> %sh0, %y
%sh1 = shl <2 x i32> %r, <i32 7, i32 8>
ret <2 x i32> %sh1
}
define i64 @lshr_and(i64 %x, i64 %py) {
; CHECK-LABEL: @lshr_and(
; CHECK-NEXT: [[Y:%.*]] = srem i64 [[PY:%.*]], 42
; CHECK-NEXT: [[TMP1:%.*]] = lshr i64 [[X:%.*]], 12
; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 [[Y]], 7
; CHECK-NEXT: [[SH1:%.*]] = and i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i64 [[SH1]]
;
%y = srem i64 %py, 42 ; thwart complexity-based canonicalization
%sh0 = lshr i64 %x, 5
%r = and i64 %y, %sh0
%sh1 = lshr i64 %r, 7
ret i64 %sh1
}
define <2 x i64> @lshr_and_undef(<2 x i64> %x, <2 x i64> %py) {
; CHECK-LABEL: @lshr_and_undef(
; CHECK-NEXT: [[Y:%.*]] = srem <2 x i64> [[PY:%.*]], <i64 42, i64 42>
; CHECK-NEXT: [[TMP1:%.*]] = lshr <2 x i64> [[X:%.*]], <i64 12, i64 undef>
; CHECK-NEXT: [[TMP2:%.*]] = lshr <2 x i64> [[Y]], <i64 7, i64 undef>
; CHECK-NEXT: [[SH1:%.*]] = and <2 x i64> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <2 x i64> [[SH1]]
;
%y = srem <2 x i64> %py, <i64 42, i64 42> ; thwart complexity-based canonicalization
%sh0 = lshr <2 x i64> %x, <i64 5, i64 undef>
%r = and <2 x i64> %y, %sh0
%sh1 = lshr <2 x i64> %r, <i64 7, i64 undef>
ret <2 x i64> %sh1
}
define <4 x i32> @lshr_or(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @lshr_or(
; CHECK-NEXT: [[TMP1:%.*]] = lshr <4 x i32> [[X:%.*]], <i32 12, i32 12, i32 12, i32 12>
; CHECK-NEXT: [[TMP2:%.*]] = lshr <4 x i32> [[Y:%.*]], <i32 7, i32 7, i32 7, i32 7>
; CHECK-NEXT: [[SH1:%.*]] = or <4 x i32> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <4 x i32> [[SH1]]
;
%sh0 = lshr <4 x i32> %x, <i32 5, i32 5, i32 5, i32 5>
%r = or <4 x i32> %sh0, %y
%sh1 = lshr <4 x i32> %r, <i32 7, i32 7, i32 7, i32 7>
ret <4 x i32> %sh1
}
define <8 x i16> @lshr_xor(<8 x i16> %x, <8 x i16> %py) {
; CHECK-LABEL: @lshr_xor(
; CHECK-NEXT: [[Y:%.*]] = srem <8 x i16> [[PY:%.*]], <i16 42, i16 42, i16 42, i16 42, i16 42, i16 42, i16 42, i16 42>
; CHECK-NEXT: [[TMP1:%.*]] = lshr <8 x i16> [[X:%.*]], <i16 12, i16 12, i16 12, i16 12, i16 12, i16 12, i16 12, i16 12>
; CHECK-NEXT: [[TMP2:%.*]] = lshr <8 x i16> [[Y]], <i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7>
; CHECK-NEXT: [[SH1:%.*]] = xor <8 x i16> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <8 x i16> [[SH1]]
;
%y = srem <8 x i16> %py, <i16 42, i16 42, i16 42, i16 42, i16 42, i16 42, i16 42, i16 -42> ; thwart complexity-based canonicalization
%sh0 = lshr <8 x i16> %x, <i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5>
%r = xor <8 x i16> %y, %sh0
%sh1 = lshr <8 x i16> %r, <i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7>
ret <8 x i16> %sh1
}
define <16 x i8> @ashr_and(<16 x i8> %x, <16 x i8> %py, <16 x i8> %pz) {
; CHECK-LABEL: @ashr_and(
; CHECK-NEXT: [[Y:%.*]] = srem <16 x i8> [[PY:%.*]], [[PZ:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = ashr <16 x i8> [[X:%.*]], <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5>
; CHECK-NEXT: [[TMP2:%.*]] = ashr <16 x i8> [[Y]], <i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2>
; CHECK-NEXT: [[SH1:%.*]] = and <16 x i8> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <16 x i8> [[SH1]]
;
%y = srem <16 x i8> %py, %pz ; thwart complexity-based canonicalization
%sh0 = ashr <16 x i8> %x, <i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3>
%r = and <16 x i8> %y, %sh0
%sh1 = ashr <16 x i8> %r, <i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2>
ret <16 x i8> %sh1
}
define <2 x i64> @ashr_or(<2 x i64> %x, <2 x i64> %y) {
; CHECK-LABEL: @ashr_or(
; CHECK-NEXT: [[TMP1:%.*]] = ashr <2 x i64> [[X:%.*]], <i64 12, i64 12>
; CHECK-NEXT: [[TMP2:%.*]] = ashr <2 x i64> [[Y:%.*]], <i64 7, i64 7>
; CHECK-NEXT: [[SH1:%.*]] = or <2 x i64> [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret <2 x i64> [[SH1]]
;
%sh0 = ashr <2 x i64> %x, <i64 5, i64 5>
%r = or <2 x i64> %sh0, %y
%sh1 = ashr <2 x i64> %r, <i64 7, i64 7>
ret <2 x i64> %sh1
}
define i32 @ashr_xor(i32 %x, i32 %py) {
; CHECK-LABEL: @ashr_xor(
; CHECK-NEXT: [[Y:%.*]] = srem i32 [[PY:%.*]], 42
; CHECK-NEXT: [[TMP1:%.*]] = ashr i32 [[X:%.*]], 12
; CHECK-NEXT: [[TMP2:%.*]] = ashr i32 [[Y]], 7
; CHECK-NEXT: [[SH1:%.*]] = xor i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i32 [[SH1]]
;
%y = srem i32 %py, 42 ; thwart complexity-based canonicalization
%sh0 = ashr i32 %x, 5
%r = xor i32 %y, %sh0
%sh1 = ashr i32 %r, 7
ret i32 %sh1
}
define i32 @shr_mismatch_xor(i32 %x, i32 %y) {
; CHECK-LABEL: @shr_mismatch_xor(
; CHECK-NEXT: [[SH0:%.*]] = ashr i32 [[X:%.*]], 5
; CHECK-NEXT: [[R:%.*]] = xor i32 [[SH0]], [[Y:%.*]]
; CHECK-NEXT: [[SH1:%.*]] = lshr i32 [[R]], 7
; CHECK-NEXT: ret i32 [[SH1]]
;
%sh0 = ashr i32 %x, 5
%r = xor i32 %y, %sh0
%sh1 = lshr i32 %r, 7
ret i32 %sh1
}
define i32 @ashr_overshift_xor(i32 %x, i32 %y) {
; CHECK-LABEL: @ashr_overshift_xor(
; CHECK-NEXT: [[SH0:%.*]] = ashr i32 [[X:%.*]], 15
; CHECK-NEXT: [[R:%.*]] = xor i32 [[SH0]], [[Y:%.*]]
; CHECK-NEXT: [[SH1:%.*]] = ashr i32 [[R]], 17
; CHECK-NEXT: ret i32 [[SH1]]
;
%sh0 = ashr i32 %x, 15
%r = xor i32 %y, %sh0
%sh1 = ashr i32 %r, 17
ret i32 %sh1
}
define <2 x i32> @ashr_undef_undef_xor(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @ashr_undef_undef_xor(
; CHECK-NEXT: [[SH0:%.*]] = ashr <2 x i32> [[X:%.*]], <i32 15, i32 undef>
; CHECK-NEXT: [[R:%.*]] = xor <2 x i32> [[SH0]], [[Y:%.*]]
; CHECK-NEXT: [[SH1:%.*]] = ashr <2 x i32> [[R]], <i32 undef, i32 17>
; CHECK-NEXT: ret <2 x i32> [[SH1]]
;
%sh0 = ashr <2 x i32> %x, <i32 15, i32 undef>
%r = xor <2 x i32> %y, %sh0
%sh1 = ashr <2 x i32> %r, <i32 undef, i32 17>
ret <2 x i32> %sh1
}
define i32 @lshr_or_extra_use(i32 %x, i32 %y, i32* %p) {
; CHECK-LABEL: @lshr_or_extra_use(
; CHECK-NEXT: [[SH0:%.*]] = lshr i32 [[X:%.*]], 5
; CHECK-NEXT: [[R:%.*]] = or i32 [[SH0]], [[Y:%.*]]
; CHECK-NEXT: store i32 [[R]], i32* [[P:%.*]], align 4
; CHECK-NEXT: [[SH1:%.*]] = lshr i32 [[R]], 7
; CHECK-NEXT: ret i32 [[SH1]]
;
%sh0 = lshr i32 %x, 5
%r = or i32 %sh0, %y
store i32 %r, i32* %p
%sh1 = lshr i32 %r, 7
ret i32 %sh1
}
; Avoid crashing on constant expressions.
@g = external global i32
define i32 @PR44028(i32 %x) {
; CHECK-LABEL: @PR44028(
; CHECK-NEXT: [[SH1:%.*]] = ashr exact i32 [[X:%.*]], 16
; CHECK-NEXT: [[T0:%.*]] = xor i32 [[SH1]], shl (i32 ptrtoint (i32* @g to i32), i32 16)
; CHECK-NEXT: [[T27:%.*]] = ashr exact i32 [[T0]], 16
; CHECK-NEXT: ret i32 [[T27]]
;
%sh1 = ashr exact i32 %x, 16
%t0 = xor i32 %sh1, shl (i32 ptrtoint (i32* @g to i32), i32 16)
%t27 = ashr exact i32 %t0, 16
ret i32 %t27
}
|
