aboutsummaryrefslogtreecommitdiffstats
path: root/test/Transforms/IndVarSimplify/pr20680.ll
blob: 88a7fd765d0bd68fe40cb74640f552f8ad902c9a (plain)
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
; RUN: opt < %s -indvars -S | FileCheck %s

@a = common global i32 0, align 4
@c = common global i32 0, align 4
@b = common global i32 0, align 4

define void @f() {
; CHECK-LABEL: @f(
; CHECK-LABEL: entry:
; CHECK: br label %[[for_cond2_preheader:.*]]

; CHECK: [[for_cond2_preheader]]:
; CHECK-NEXT: %[[indvars_iv:.*]] = phi i32 [ %[[indvars_iv_next:.*]], %[[for_inc13:.*]] ], [ -14, %entry ]
; br i1 {{.*}}, label %[[for_inc13]], label %
entry:
  %0 = load i32* @a, align 4
  %tobool2 = icmp eq i32 %0, 0
  %1 = load i32* @a, align 4
  %tobool = icmp eq i32 %1, 0
  br label %for.cond2.preheader

for.cond2.preheader:                              ; preds = %for.inc13, %entry
  %storemerge15 = phi i8 [ -14, %entry ], [ %inc14, %for.inc13 ]
  br i1 %tobool2, label %for.inc13, label %for.body3.lr.ph

for.body3.lr.ph:                                  ; preds = %for.cond2.preheader
  %tobool5 = icmp eq i8 %storemerge15, 0
  %conv7 = sext i8 %storemerge15 to i32
  %2 = add nsw i32 %conv7, 1
  %3 = icmp ult i32 %2, 3
  %div = select i1 %3, i32 %conv7, i32 0
  br i1 %tobool5, label %for.body3.lr.ph.split.us, label %for.body3.lr.ph.for.body3.lr.ph.split_crit_edge

for.body3.lr.ph.for.body3.lr.ph.split_crit_edge:  ; preds = %for.body3.lr.ph
  br label %for.body3.lr.ph.split

for.body3.lr.ph.split.us:                         ; preds = %for.body3.lr.ph
  br i1 %tobool, label %for.body3.lr.ph.split.us.split.us, label %for.body3.lr.ph.split.us.for.body3.lr.ph.split.us.split_crit_edge

for.body3.lr.ph.split.us.for.body3.lr.ph.split.us.split_crit_edge: ; preds = %for.body3.lr.ph.split.us
  br label %for.body3.lr.ph.split.us.split

for.body3.lr.ph.split.us.split.us:                ; preds = %for.body3.lr.ph.split.us
  br label %for.body3.us.us

for.body3.us.us:                                  ; preds = %for.cond2.loopexit.us.us, %for.body3.lr.ph.split.us.split.us
  br i1 true, label %cond.false.us.us, label %cond.end.us.us

cond.false.us.us:                                 ; preds = %for.body3.us.us
  br label %cond.end.us.us

cond.end.us.us:                                   ; preds = %cond.false.us.us, %for.body3.us.us
  %cond.us.us = phi i32 [ %div, %cond.false.us.us ], [ %conv7, %for.body3.us.us ]
  %4 = load i32* @b, align 4
  %cmp91.us.us = icmp slt i32 %4, 1
  br i1 %cmp91.us.us, label %for.inc.lr.ph.us.us, label %for.cond2.loopexit.us.us

for.cond2.loopexit.us.us:                         ; preds = %for.cond8.for.cond2.loopexit_crit_edge.us.us, %cond.end.us.us
  br i1 true, label %for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa.us, label %for.body3.us.us

for.inc.lr.ph.us.us:                              ; preds = %cond.end.us.us
  br label %for.inc.us.us

for.cond8.for.cond2.loopexit_crit_edge.us.us:     ; preds = %for.inc.us.us
  %inc.lcssa.us.us = phi i32 [ %inc.us.us, %for.inc.us.us ]
  store i32 %inc.lcssa.us.us, i32* @b, align 4
  br label %for.cond2.loopexit.us.us

for.inc.us.us:                                    ; preds = %for.inc.us.us, %for.inc.lr.ph.us.us
  %5 = phi i32 [ %4, %for.inc.lr.ph.us.us ], [ %inc.us.us, %for.inc.us.us ]
  %inc.us.us = add nsw i32 %5, 1
  %cmp9.us.us = icmp slt i32 %inc.us.us, 1
  br i1 %cmp9.us.us, label %for.inc.us.us, label %for.cond8.for.cond2.loopexit_crit_edge.us.us

for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa.us: ; preds = %for.cond2.loopexit.us.us
  %cond.lcssa.ph.us.ph.us = phi i32 [ %cond.us.us, %for.cond2.loopexit.us.us ]
  br label %for.cond2.for.inc13_crit_edge.us-lcssa.us

for.body3.lr.ph.split.us.split:                   ; preds = %for.body3.lr.ph.split.us.for.body3.lr.ph.split.us.split_crit_edge
  br label %for.body3.us

for.body3.us:                                     ; preds = %for.cond2.loopexit.us, %for.body3.lr.ph.split.us.split
  br i1 true, label %cond.false.us, label %cond.end.us

cond.false.us:                                    ; preds = %for.body3.us
  br label %cond.end.us

cond.end.us:                                      ; preds = %cond.false.us, %for.body3.us
  %cond.us = phi i32 [ %div, %cond.false.us ], [ %conv7, %for.body3.us ]
  %6 = load i32* @b, align 4
  %cmp91.us = icmp slt i32 %6, 1
  br i1 %cmp91.us, label %for.inc.lr.ph.us, label %for.cond2.loopexit.us

for.inc.us:                                       ; preds = %for.inc.lr.ph.us, %for.inc.us
  %7 = phi i32 [ %6, %for.inc.lr.ph.us ], [ %inc.us, %for.inc.us ]
  %inc.us = add nsw i32 %7, 1
  %cmp9.us = icmp slt i32 %inc.us, 1
  br i1 %cmp9.us, label %for.inc.us, label %for.cond8.for.cond2.loopexit_crit_edge.us

for.cond2.loopexit.us:                            ; preds = %for.cond8.for.cond2.loopexit_crit_edge.us, %cond.end.us
  br i1 false, label %for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa, label %for.body3.us

for.inc.lr.ph.us:                                 ; preds = %cond.end.us
  br label %for.inc.us

for.cond8.for.cond2.loopexit_crit_edge.us:        ; preds = %for.inc.us
  %inc.lcssa.us = phi i32 [ %inc.us, %for.inc.us ]
  store i32 %inc.lcssa.us, i32* @b, align 4
  br label %for.cond2.loopexit.us

for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa: ; preds = %for.cond2.loopexit.us
  %cond.lcssa.ph.us.ph = phi i32 [ %cond.us, %for.cond2.loopexit.us ]
  br label %for.cond2.for.inc13_crit_edge.us-lcssa.us

for.cond2.for.inc13_crit_edge.us-lcssa.us:        ; preds = %for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa, %for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa.us
  %cond.lcssa.ph.us = phi i32 [ %cond.lcssa.ph.us.ph, %for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa ], [ %cond.lcssa.ph.us.ph.us, %for.cond2.for.inc13_crit_edge.us-lcssa.us.us-lcssa.us ]
  br label %for.cond2.for.inc13_crit_edge

for.body3.lr.ph.split:                            ; preds = %for.body3.lr.ph.for.body3.lr.ph.split_crit_edge
  br i1 %tobool, label %for.body3.lr.ph.split.split.us, label %for.body3.lr.ph.split.for.body3.lr.ph.split.split_crit_edge

for.body3.lr.ph.split.for.body3.lr.ph.split.split_crit_edge: ; preds = %for.body3.lr.ph.split
  br label %for.body3.lr.ph.split.split

for.body3.lr.ph.split.split.us:                   ; preds = %for.body3.lr.ph.split
  br label %for.body3.us3

for.body3.us3:                                    ; preds = %for.cond2.loopexit.us11, %for.body3.lr.ph.split.split.us
  br i1 false, label %cond.false.us4, label %cond.end.us5

cond.false.us4:                                   ; preds = %for.body3.us3
  br label %cond.end.us5

cond.end.us5:                                     ; preds = %cond.false.us4, %for.body3.us3
  %cond.us6 = phi i32 [ %div, %cond.false.us4 ], [ %conv7, %for.body3.us3 ]
  %8 = load i32* @b, align 4
  %cmp91.us7 = icmp slt i32 %8, 1
  br i1 %cmp91.us7, label %for.inc.lr.ph.us12, label %for.cond2.loopexit.us11

for.inc.us8:                                      ; preds = %for.inc.lr.ph.us12, %for.inc.us8
  %9 = phi i32 [ %8, %for.inc.lr.ph.us12 ], [ %inc.us9, %for.inc.us8 ]
  %inc.us9 = add nsw i32 %9, 1
  %cmp9.us10 = icmp slt i32 %inc.us9, 1
  br i1 %cmp9.us10, label %for.inc.us8, label %for.cond8.for.cond2.loopexit_crit_edge.us13

for.cond2.loopexit.us11:                          ; preds = %for.cond8.for.cond2.loopexit_crit_edge.us13, %cond.end.us5
  br i1 true, label %for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa.us, label %for.body3.us3

for.inc.lr.ph.us12:                               ; preds = %cond.end.us5
  br label %for.inc.us8

for.cond8.for.cond2.loopexit_crit_edge.us13:      ; preds = %for.inc.us8
  %inc.lcssa.us14 = phi i32 [ %inc.us9, %for.inc.us8 ]
  store i32 %inc.lcssa.us14, i32* @b, align 4
  br label %for.cond2.loopexit.us11

for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa.us: ; preds = %for.cond2.loopexit.us11
  %cond.lcssa.ph.ph.us = phi i32 [ %cond.us6, %for.cond2.loopexit.us11 ]
  br label %for.cond2.for.inc13_crit_edge.us-lcssa

for.body3.lr.ph.split.split:                      ; preds = %for.body3.lr.ph.split.for.body3.lr.ph.split.split_crit_edge
  br label %for.body3

for.cond8.for.cond2.loopexit_crit_edge:           ; preds = %for.inc
  %inc.lcssa = phi i32 [ %inc, %for.inc ]
  store i32 %inc.lcssa, i32* @b, align 4
  br label %for.cond2.loopexit

for.cond2.loopexit:                               ; preds = %cond.end, %for.cond8.for.cond2.loopexit_crit_edge
  br i1 false, label %for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa, label %for.body3

for.body3:                                        ; preds = %for.cond2.loopexit, %for.body3.lr.ph.split.split
  br i1 false, label %cond.false, label %cond.end

cond.false:                                       ; preds = %for.body3
  br label %cond.end

cond.end:                                         ; preds = %cond.false, %for.body3
  %cond = phi i32 [ %div, %cond.false ], [ %conv7, %for.body3 ]
  %10 = load i32* @b, align 4
  %cmp91 = icmp slt i32 %10, 1
  br i1 %cmp91, label %for.inc.lr.ph, label %for.cond2.loopexit

for.inc.lr.ph:                                    ; preds = %cond.end
  br label %for.inc

for.inc:                                          ; preds = %for.inc, %for.inc.lr.ph
  %11 = phi i32 [ %10, %for.inc.lr.ph ], [ %inc, %for.inc ]
  %inc = add nsw i32 %11, 1
  %cmp9 = icmp slt i32 %inc, 1
  br i1 %cmp9, label %for.inc, label %for.cond8.for.cond2.loopexit_crit_edge

for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa:  ; preds = %for.cond2.loopexit
  %cond.lcssa.ph.ph = phi i32 [ %cond, %for.cond2.loopexit ]
  br label %for.cond2.for.inc13_crit_edge.us-lcssa

for.cond2.for.inc13_crit_edge.us-lcssa:           ; preds = %for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa, %for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa.us
  %cond.lcssa.ph = phi i32 [ %cond.lcssa.ph.ph, %for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa ], [ %cond.lcssa.ph.ph.us, %for.cond2.for.inc13_crit_edge.us-lcssa.us-lcssa.us ]
  br label %for.cond2.for.inc13_crit_edge

for.cond2.for.inc13_crit_edge:                    ; preds = %for.cond2.for.inc13_crit_edge.us-lcssa, %for.cond2.for.inc13_crit_edge.us-lcssa.us
  %cond.lcssa = phi i32 [ %cond.lcssa.ph, %for.cond2.for.inc13_crit_edge.us-lcssa ], [ %cond.lcssa.ph.us, %for.cond2.for.inc13_crit_edge.us-lcssa.us ]
  store i32 %cond.lcssa, i32* @c, align 4
  br label %for.inc13

; CHECK: [[for_inc13]]:
; CHECK-NEXT: %[[indvars_iv_next]] = add nuw nsw i32 %[[indvars_iv]], 1
; CHECK-NEXT: %[[exitcond4:.*]] = icmp ne i32 %[[indvars_iv]], -1
; CHECK-NEXT: br i1 %[[exitcond4]], label %[[for_cond2_preheader]], label %[[for_end15:.*]]
for.inc13:                                        ; preds = %for.cond2.for.inc13_crit_edge, %for.cond2.preheader
  %inc14 = add i8 %storemerge15, 1
  %cmp = icmp ugt i8 %inc14, 50
  br i1 %cmp, label %for.cond2.preheader, label %for.end15

; CHECK: [[for_end15]]:
; CHECK-NEXT: ret void
for.end15:                                        ; preds = %for.inc13
  ret void
}