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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
declare void @use(i8)
define i8 @basic(i8 %x, i8 %y) {
; CHECK-LABEL: @basic(
; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
%a = add i8 %notx, %y
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_com_add(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_com_add(
; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[Y:%.*]], [[X:%.*]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%noty = xor i8 %y, -1
%a = add i8 %x, %noty
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_use_xor(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_use_xor(
; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
; CHECK-NEXT: call void @use(i8 [[NOTX]])
; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
call void @use(i8 %notx)
%a = add i8 %notx, %y
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_use_add(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_use_add(
; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
; CHECK-NEXT: [[A:%.*]] = add i8 [[NOTX]], [[Y:%.*]]
; CHECK-NEXT: call void @use(i8 [[A]])
; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X]], [[Y]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
%a = add i8 %notx, %y
call void @use(i8 %a)
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_use_both(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_use_both(
; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
; CHECK-NEXT: call void @use(i8 [[NOTX]])
; CHECK-NEXT: [[A:%.*]] = add i8 [[NOTX]], [[Y:%.*]]
; CHECK-NEXT: call void @use(i8 [[A]])
; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X]], [[Y]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
call void @use(i8 %notx)
%a = add i8 %notx, %y
call void @use(i8 %a)
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_preserve_nsw(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_preserve_nsw(
; CHECK-NEXT: [[NOTA:%.*]] = sub nsw i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
%a = add nsw i8 %notx, %y
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_preserve_nuw(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_preserve_nuw(
; CHECK-NEXT: [[NOTA:%.*]] = sub nuw i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
%a = add nuw i8 %notx, %y
%nota = xor i8 %a, -1
ret i8 %nota
}
define i8 @basic_preserve_nuw_nsw(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_preserve_nuw_nsw(
; CHECK-NEXT: [[NOTA:%.*]] = sub nuw nsw i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[NOTA]]
;
%notx = xor i8 %x, -1
%a = add nuw nsw i8 %notx, %y
%nota = xor i8 %a, -1
ret i8 %nota
}
define <4 x i32> @vector_test(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @vector_test(
; CHECK-NEXT: [[NOTA:%.*]] = sub <4 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret <4 x i32> [[NOTA]]
;
%notx = xor <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
%a = add <4 x i32> %notx, %y
%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 -1, i32 -1>
ret <4 x i32> %nota
}
define <4 x i32> @vector_test_undef(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @vector_test_undef(
; CHECK-NEXT: [[NOTA:%.*]] = sub <4 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret <4 x i32> [[NOTA]]
;
%notx = xor <4 x i32> %x, <i32 -1, i32 undef, i32 undef, i32 -1>
%a = add <4 x i32> %notx, %y
%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 undef, i32 undef>
ret <4 x i32> %nota
}
define <4 x i32> @vector_test_undef_nsw_nuw(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @vector_test_undef_nsw_nuw(
; CHECK-NEXT: [[NOTA:%.*]] = sub nuw nsw <4 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret <4 x i32> [[NOTA]]
;
%notx = xor <4 x i32> %x, <i32 -1, i32 undef, i32 undef, i32 -1>
%a = add nsw nuw <4 x i32> %notx, %y
%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 undef, i32 undef>
ret <4 x i32> %nota
}
define i32 @pr50308(i1 %c1, i32 %v1, i32 %v2, i32 %v3) {
; CHECK-LABEL: @pr50308(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C1:%.*]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
; CHECK: cond.true:
; CHECK-NEXT: [[ADD_NOT:%.*]] = sub i32 -2, [[V1:%.*]]
; CHECK-NEXT: [[ADD1_NEG:%.*]] = xor i32 [[ADD_NOT]], [[V2:%.*]]
; CHECK-NEXT: br label [[COND_END]]
; CHECK: cond.end:
; CHECK-NEXT: [[COND_NEG:%.*]] = phi i32 [ [[ADD1_NEG]], [[COND_TRUE]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[SUB:%.*]] = add i32 [[COND_NEG]], [[V3:%.*]]
; CHECK-NEXT: ret i32 [[SUB]]
;
entry:
br i1 %c1, label %cond.true, label %cond.end
cond.true:
%add = add nsw i32 1, %v1
%xor = xor i32 %add, %v2
%add1 = add nsw i32 1, %xor
br label %cond.end
cond.end:
%cond = phi i32 [ %add1, %cond.true ], [ 0, %entry ]
%sub = sub nsw i32 %v3, %cond
ret i32 %sub
}
@g = extern_weak global i32
define void @pr50370(i32 %x) {
; CHECK-LABEL: @pr50370(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], 1
; CHECK-NEXT: [[B15:%.*]] = srem i32 ashr (i32 65536, i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 65537)), [[XOR]]
; CHECK-NEXT: [[B22:%.*]] = add nsw i32 [[B15]], sdiv (i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 65537), i32 2147483647)
; CHECK-NEXT: [[B14:%.*]] = srem i32 ashr (i32 65536, i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 65537)), [[B22]]
; CHECK-NEXT: [[B12:%.*]] = add nuw nsw i32 [[B15]], ashr (i32 65536, i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 65537))
; CHECK-NEXT: [[B8:%.*]] = shl i32 sdiv (i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 65537), i32 2147483647), [[B14]]
; CHECK-NEXT: [[B2:%.*]] = xor i32 [[B12]], [[B8]]
; CHECK-NEXT: [[B:%.*]] = xor i32 [[B2]], -1
; CHECK-NEXT: store i32 [[B]], i32* undef, align 4
; CHECK-NEXT: ret void
;
entry:
%xor = xor i32 %x, 1
%or4 = or i32 or (i32 zext (i1 icmp eq (i32* @g, i32* null) to i32), i32 1), 65536
%B6 = ashr i32 65536, %or4
%B15 = srem i32 %B6, %xor
%B20 = sdiv i32 %or4, 2147483647
%B22 = add i32 %B15, %B20
%B14 = srem i32 %B6, %B22
%B12 = add i32 %B15, %B6
%B8 = shl i32 %B20, %B14
%B2 = xor i32 %B12, %B8
%B3 = or i32 %B12, undef
%B = xor i32 %B2, %B3
store i32 %B, i32* undef, align 4
ret void
}
|
