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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S \
; RUN: | FileCheck %s -check-prefix=SIMPLIFY-CFG
define i32 @switch_all_duplicate_arms(i32 %0, i32 %1, i32 %2, i32 %3) {
; SIMPLIFY-CFG-LABEL: define i32 @switch_all_duplicate_arms(
; SIMPLIFY-CFG-SAME: i32 [[TMP0:%.*]], i32 [[TMP1:%.*]], i32 [[TMP2:%.*]], i32 [[TMP3:%.*]]) {
; SIMPLIFY-CFG-NEXT: switch i32 [[TMP1]], label %[[BB6:.*]] [
; SIMPLIFY-CFG-NEXT: i32 0, label %[[BB5:.*]]
; SIMPLIFY-CFG-NEXT: i32 1, label %[[BB5]]
; SIMPLIFY-CFG-NEXT: ]
; SIMPLIFY-CFG: [[BB5]]:
; SIMPLIFY-CFG-NEXT: br label %[[BB6]]
; SIMPLIFY-CFG: [[BB6]]:
; SIMPLIFY-CFG-NEXT: [[TMP8:%.*]] = phi i32 [ [[TMP3]], [[TMP4:%.*]] ], [ [[TMP2]], %[[BB5]] ]
; SIMPLIFY-CFG-NEXT: ret i32 [[TMP8]]
;
switch i32 %1, label %7 [
i32 0, label %5
i32 1, label %6
]
5:
br label %7
6:
br label %7
7:
%8 = phi i32 [ %3, %4 ], [ %2, %6 ], [ %2, %5 ]
ret i32 %8
}
define i32 @switch_some_duplicate_arms(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4) {
; SIMPLIFY-CFG-LABEL: define i32 @switch_some_duplicate_arms(
; SIMPLIFY-CFG-SAME: i32 [[TMP0:%.*]], i32 [[TMP1:%.*]], i32 [[TMP2:%.*]], i32 [[TMP3:%.*]], i32 [[TMP4:%.*]]) {
; SIMPLIFY-CFG-NEXT: switch i32 [[TMP1]], label %[[BB8:.*]] [
; SIMPLIFY-CFG-NEXT: i32 0, label %[[BB6:.*]]
; SIMPLIFY-CFG-NEXT: i32 1, label %[[BB6]]
; SIMPLIFY-CFG-NEXT: i32 2, label %[[BB7:.*]]
; SIMPLIFY-CFG-NEXT: ]
; SIMPLIFY-CFG: [[BB6]]:
; SIMPLIFY-CFG-NEXT: br label %[[BB8]]
; SIMPLIFY-CFG: [[BB7]]:
; SIMPLIFY-CFG-NEXT: br label %[[BB8]]
; SIMPLIFY-CFG: [[BB8]]:
; SIMPLIFY-CFG-NEXT: [[TMP10:%.*]] = phi i32 [ [[TMP3]], [[TMP5:%.*]] ], [ [[TMP4]], %[[BB7]] ], [ [[TMP2]], %[[BB6]] ]
; SIMPLIFY-CFG-NEXT: ret i32 [[TMP10]]
;
switch i32 %1, label %9 [
i32 0, label %6
i32 1, label %7
i32 2, label %8
]
6:
br label %9
7:
br label %9
8:
br label %9
9:
%10 = phi i32 [ %3, %5 ], [ %4, %8 ], [ %2, %7 ], [ %2, %6 ]
ret i32 %10
}
define i32 @switch_duplicate_arms_multipred(i1 %0, i32 %1, i32 %2, i32 %3, i32 %4) {
; SIMPLIFY-CFG-LABEL: define i32 @switch_duplicate_arms_multipred(
; SIMPLIFY-CFG-SAME: i1 [[TMP0:%.*]], i32 [[TMP1:%.*]], i32 [[TMP2:%.*]], i32 [[TMP3:%.*]], i32 [[TMP4:%.*]]) {
; SIMPLIFY-CFG-NEXT: br i1 [[TMP0]], label %[[BB6:.*]], label %[[BB7:.*]]
; SIMPLIFY-CFG: [[BB6]]:
; SIMPLIFY-CFG-NEXT: switch i32 [[TMP2]], label %[[BB9:.*]] [
; SIMPLIFY-CFG-NEXT: i32 0, label %[[BB7]]
; SIMPLIFY-CFG-NEXT: i32 1, label %[[BB8:.*]]
; SIMPLIFY-CFG-NEXT: ]
; SIMPLIFY-CFG: [[BB7]]:
; SIMPLIFY-CFG-NEXT: br label %[[BB9]]
; SIMPLIFY-CFG: [[BB8]]:
; SIMPLIFY-CFG-NEXT: br label %[[BB9]]
; SIMPLIFY-CFG: [[BB9]]:
; SIMPLIFY-CFG-NEXT: [[TMP10:%.*]] = phi i32 [ [[TMP4]], %[[BB6]] ], [ [[TMP3]], %[[BB8]] ], [ [[TMP3]], %[[BB7]] ]
; SIMPLIFY-CFG-NEXT: ret i32 [[TMP10]]
;
br i1 %0, label %6, label %7
6:
switch i32 %2, label %9 [
i32 0, label %7
i32 1, label %8
]
7:
br label %9
8:
br label %9
9:
%10 = phi i32 [ %4, %6 ], [ %3, %8 ], [ %3, %7 ]
ret i32 %10
}
define i32 @switch_dup_default(i32 %0, i32 %1, i32 %2, i32 %3) {
; SIMPLIFY-CFG-LABEL: define i32 @switch_dup_default(
; SIMPLIFY-CFG-SAME: i32 [[TMP0:%.*]], i32 [[TMP1:%.*]], i32 [[TMP2:%.*]], i32 [[TMP3:%.*]]) {
; SIMPLIFY-CFG-NEXT: [[COND:%.*]] = icmp eq i32 [[TMP1]], 0
; SIMPLIFY-CFG-NEXT: [[TMP8:%.*]] = select i1 [[COND]], i32 [[TMP3]], i32 [[TMP2]]
; SIMPLIFY-CFG-NEXT: ret i32 [[TMP8]]
;
switch i32 %1, label %7 [
i32 0, label %5
i32 1, label %6
]
5:
br label %8
6:
br label %8
7:
br label %8
8:
%9 = phi i32 [ %3, %5 ], [ %2, %6 ], [ %2, %7 ]
ret i32 %9
}
define i32 @switch_dup_exit(i32 %val) {
; SIMPLIFY-CFG-LABEL: define i32 @switch_dup_exit(
; SIMPLIFY-CFG-SAME: i32 [[VAL:%.*]]) {
; SIMPLIFY-CFG-NEXT: [[ENTRY:.*]]:
; SIMPLIFY-CFG-NEXT: switch i32 [[VAL]], label %[[DEFAULT:.*]] [
; SIMPLIFY-CFG-NEXT: i32 1, label %[[EXIT:.*]]
; SIMPLIFY-CFG-NEXT: i32 11, label %[[EXIT]]
; SIMPLIFY-CFG-NEXT: i32 22, label %[[BB1:.*]]
; SIMPLIFY-CFG-NEXT: ]
; SIMPLIFY-CFG: [[BB1]]:
; SIMPLIFY-CFG-NEXT: br label %[[EXIT]]
; SIMPLIFY-CFG: [[DEFAULT]]:
; SIMPLIFY-CFG-NEXT: br label %[[EXIT]]
; SIMPLIFY-CFG: [[EXIT]]:
; SIMPLIFY-CFG-NEXT: [[RET:%.*]] = phi i32 [ 0, %[[DEFAULT]] ], [ 3, %[[BB1]] ], [ 1, %[[ENTRY]] ], [ 1, %[[ENTRY]] ]
; SIMPLIFY-CFG-NEXT: ret i32 [[RET]]
;
entry:
switch i32 %val, label %default [
i32 1, label %exit
i32 11, label %exit
i32 22, label %bb1
i32 15, label %bb2
i32 0, label %bb2
]
bb1:
br label %exit
bb2:
br label %exit
default:
br label %exit
exit:
%ret = phi i32 [ 0, %default ], [ 0, %bb2 ], [ 3, %bb1 ], [ 1, %entry ], [ 1, %entry ]
ret i32 %ret
}
define i64 @switch_dup_exit_2(i32 %val) {
; SIMPLIFY-CFG-LABEL: define i64 @switch_dup_exit_2(
; SIMPLIFY-CFG-SAME: i32 [[VAL:%.*]]) {
; SIMPLIFY-CFG-NEXT: [[ENTRY:.*:]]
; SIMPLIFY-CFG-NEXT: [[SWITCH_SELECTCMP_CASE1:%.*]] = icmp eq i32 [[VAL]], 1
; SIMPLIFY-CFG-NEXT: [[SWITCH_SELECTCMP_CASE2:%.*]] = icmp eq i32 [[VAL]], 11
; SIMPLIFY-CFG-NEXT: [[SWITCH_SELECTCMP:%.*]] = or i1 [[SWITCH_SELECTCMP_CASE1]], [[SWITCH_SELECTCMP_CASE2]]
; SIMPLIFY-CFG-NEXT: [[RET:%.*]] = select i1 [[SWITCH_SELECTCMP]], i64 1, i64 0
; SIMPLIFY-CFG-NEXT: ret i64 [[RET]]
;
entry:
switch i32 %val, label %default [
i32 1, label %bb2
i32 11, label %exit
i32 13, label %bb1
i32 0, label %bb1
]
bb1:
br label %exit
bb2:
br label %exit
default:
br label %exit
exit:
%ret = phi i64 [ 0, %default ], [ 0, %bb1 ], [ 1, %entry ], [ 1, %bb2 ]
ret i64 %ret
}
|
