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
|
; RUN: opt < %s -instcombine -S | FileCheck %s
define i1 @test1(i16 %tmp2) {
; CHECK-LABEL: @test1
; CHECK-NEXT: %tmp = icmp eq i16 %tmp2, 256
; CHECK-NEXT: ret i1 %tmp
%tmp10 = call i16 @llvm.bswap.i16( i16 %tmp2 )
%tmp = icmp eq i16 %tmp10, 1
ret i1 %tmp
}
define i1 @test2(i32 %tmp) {
; CHECK-LABEL: @test2
; CHECK-NEXT: %tmp.upgrd.1 = icmp eq i32 %tmp, 16777216
; CHECK-NEXT: ret i1 %tmp.upgrd.1
%tmp34 = tail call i32 @llvm.bswap.i32( i32 %tmp )
%tmp.upgrd.1 = icmp eq i32 %tmp34, 1
ret i1 %tmp.upgrd.1
}
define i1 @test3(i64 %tmp) {
; CHECK-LABEL: @test3
; CHECK-NEXT: %tmp.upgrd.2 = icmp eq i64 %tmp, 72057594037927936
; CHECK-NEXT: ret i1 %tmp.upgrd.2
%tmp34 = tail call i64 @llvm.bswap.i64( i64 %tmp )
%tmp.upgrd.2 = icmp eq i64 %tmp34, 1
ret i1 %tmp.upgrd.2
}
; rdar://5992453
; A & 255
define i32 @test4(i32 %a) nounwind {
; CHECK-LABEL: @test4
; CHECK-NEXT: %tmp2 = and i32 %a, 255
; CHECK-NEXT: ret i32 %tmp2
%tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
%tmp4 = lshr i32 %tmp2, 24
ret i32 %tmp4
}
; A
define i32 @test5(i32 %a) nounwind {
; CHECK-LABEL: @test5
; CHECK-NEXT: ret i32 %a
%tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
%tmp4 = tail call i32 @llvm.bswap.i32( i32 %tmp2 )
ret i32 %tmp4
}
; a >> 24
define i32 @test6(i32 %a) nounwind {
; CHECK-LABEL: @test6
; CHECK-NEXT: %tmp2 = lshr i32 %a, 24
; CHECK-NEXT: ret i32 %tmp2
%tmp2 = tail call i32 @llvm.bswap.i32( i32 %a )
%tmp4 = and i32 %tmp2, 255
ret i32 %tmp4
}
; PR5284
define i16 @test7(i32 %A) {
; CHECK-LABEL: @test7
; CHECK-NEXT: %1 = lshr i32 %A, 16
; CHECK-NEXT: %D = trunc i32 %1 to i16
; CHECK-NEXT: ret i16 %D
%B = tail call i32 @llvm.bswap.i32(i32 %A) nounwind
%C = trunc i32 %B to i16
%D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind
ret i16 %D
}
define i16 @test8(i64 %A) {
; CHECK-LABEL: @test8
; CHECK-NEXT: %1 = lshr i64 %A, 48
; CHECK-NEXT: %D = trunc i64 %1 to i16
; CHECK-NEXT: ret i16 %D
%B = tail call i64 @llvm.bswap.i64(i64 %A) nounwind
%C = trunc i64 %B to i16
%D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind
ret i16 %D
}
; Misc: Fold bswap(undef) to undef.
define i64 @foo() {
; CHECK-LABEL: @foo
; CHECK-NEXT: ret i64 undef
%a = call i64 @llvm.bswap.i64(i64 undef)
ret i64 %a
}
; PR15782
; Fold: OP( BSWAP(x), BSWAP(y) ) -> BSWAP( OP(x, y) )
; Fold: OP( BSWAP(x), CONSTANT ) -> BSWAP( OP(x, BSWAP(CONSTANT) ) )
define i16 @bs_and16i(i16 %a, i16 %b) #0 {
; CHECK-LABEL: @bs_and16i
; CHECK-NEXT: %1 = and i16 %a, 4391
; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
; CHECK-NEXT: ret i16 %2
%1 = tail call i16 @llvm.bswap.i16(i16 %a)
%2 = and i16 %1, 10001
ret i16 %2
}
define i16 @bs_and16(i16 %a, i16 %b) #0 {
; CHECK-LABEL: @bs_and16
; CHECK-NEXT: %1 = and i16 %a, %b
; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
; CHECK-NEXT: ret i16 %2
%tmp1 = tail call i16 @llvm.bswap.i16(i16 %a)
%tmp2 = tail call i16 @llvm.bswap.i16(i16 %b)
%tmp3 = and i16 %tmp1, %tmp2
ret i16 %tmp3
}
define i16 @bs_or16(i16 %a, i16 %b) #0 {
; CHECK-LABEL: @bs_or16
; CHECK-NEXT: %1 = or i16 %a, %b
; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
; CHECK-NEXT: ret i16 %2
%tmp1 = tail call i16 @llvm.bswap.i16(i16 %a)
%tmp2 = tail call i16 @llvm.bswap.i16(i16 %b)
%tmp3 = or i16 %tmp1, %tmp2
ret i16 %tmp3
}
define i16 @bs_xor16(i16 %a, i16 %b) #0 {
; CHECK-LABEL: @bs_xor16
; CHECK-NEXT: %1 = xor i16 %a, %b
; CHECK-NEXT: %2 = call i16 @llvm.bswap.i16(i16 %1)
; CHECK-NEXT: ret i16 %2
%tmp1 = tail call i16 @llvm.bswap.i16(i16 %a)
%tmp2 = tail call i16 @llvm.bswap.i16(i16 %b)
%tmp3 = xor i16 %tmp1, %tmp2
ret i16 %tmp3
}
define i32 @bs_and32i(i32 %a, i32 %b) #0 {
; CHECK-LABEL: @bs_and32i
; CHECK-NEXT: %1 = and i32 %a, -1585053440
; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
; CHECK-NEXT: ret i32 %2
%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
%tmp2 = and i32 %tmp1, 100001
ret i32 %tmp2
}
define i32 @bs_and32(i32 %a, i32 %b) #0 {
; CHECK-LABEL: @bs_and32
; CHECK-NEXT: %1 = and i32 %a, %b
; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
; CHECK-NEXT: ret i32 %2
%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
%tmp2 = tail call i32 @llvm.bswap.i32(i32 %b)
%tmp3 = and i32 %tmp1, %tmp2
ret i32 %tmp3
}
define i32 @bs_or32(i32 %a, i32 %b) #0 {
; CHECK-LABEL: @bs_or32
; CHECK-NEXT: %1 = or i32 %a, %b
; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
; CHECK-NEXT: ret i32 %2
%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
%tmp2 = tail call i32 @llvm.bswap.i32(i32 %b)
%tmp3 = or i32 %tmp1, %tmp2
ret i32 %tmp3
}
define i32 @bs_xor32(i32 %a, i32 %b) #0 {
; CHECK-LABEL: @bs_xor32
; CHECK-NEXT: %1 = xor i32 %a, %b
; CHECK-NEXT: %2 = call i32 @llvm.bswap.i32(i32 %1)
; CHECK-NEXT: ret i32 %2
%tmp1 = tail call i32 @llvm.bswap.i32(i32 %a)
%tmp2 = tail call i32 @llvm.bswap.i32(i32 %b)
%tmp3 = xor i32 %tmp1, %tmp2
ret i32 %tmp3
}
define i64 @bs_and64i(i64 %a, i64 %b) #0 {
; CHECK-LABEL: @bs_and64i
; CHECK-NEXT: %1 = and i64 %a, 129085117527228416
; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
; CHECK-NEXT: ret i64 %2
%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
%tmp2 = and i64 %tmp1, 1000000001
ret i64 %tmp2
}
define i64 @bs_and64(i64 %a, i64 %b) #0 {
; CHECK-LABEL: @bs_and64
; CHECK-NEXT: %1 = and i64 %a, %b
; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
; CHECK-NEXT: ret i64 %2
%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
%tmp2 = tail call i64 @llvm.bswap.i64(i64 %b)
%tmp3 = and i64 %tmp1, %tmp2
ret i64 %tmp3
}
define i64 @bs_or64(i64 %a, i64 %b) #0 {
; CHECK-LABEL: @bs_or64
; CHECK-NEXT: %1 = or i64 %a, %b
; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
; CHECK-NEXT: ret i64 %2
%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
%tmp2 = tail call i64 @llvm.bswap.i64(i64 %b)
%tmp3 = or i64 %tmp1, %tmp2
ret i64 %tmp3
}
define i64 @bs_xor64(i64 %a, i64 %b) #0 {
; CHECK-LABEL: @bs_xor64
; CHECK-NEXT: %1 = xor i64 %a, %b
; CHECK-NEXT: %2 = call i64 @llvm.bswap.i64(i64 %1)
; CHECK-NEXT: ret i64 %2
%tmp1 = tail call i64 @llvm.bswap.i64(i64 %a)
%tmp2 = tail call i64 @llvm.bswap.i64(i64 %b)
%tmp3 = xor i64 %tmp1, %tmp2
ret i64 %tmp3
}
declare i16 @llvm.bswap.i16(i16)
declare i32 @llvm.bswap.i32(i32)
declare i64 @llvm.bswap.i64(i64)
|
