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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=instcombine < %s | FileCheck %s
define i1 @sdiv_by_zero_indirect_is_poison(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @sdiv_by_zero_indirect_is_poison(
; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; CHECK: true:
; CHECK-NEXT: br label [[DONE:%.*]]
; CHECK: false:
; CHECK-NEXT: br label [[DONE]]
; CHECK: done:
; CHECK-NEXT: ret i1 poison
;
br i1 %c, label %true, label %false
true:
%y_true = and i1 %y, 0
br label %done
false:
%y_false = and i1 %y, 0
br label %done
done:
%yy = phi i1 [ %y_false, %false ], [ %y_true, %true ]
%r = sdiv i1 %x, %yy
ret i1 %r
}
define i1 @udiv_by_zero_indirect_is_poison(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @udiv_by_zero_indirect_is_poison(
; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; CHECK: true:
; CHECK-NEXT: br label [[DONE:%.*]]
; CHECK: false:
; CHECK-NEXT: br label [[DONE]]
; CHECK: done:
; CHECK-NEXT: ret i1 poison
;
br i1 %c, label %true, label %false
true:
%y_true = and i1 %y, 0
br label %done
false:
%y_false = and i1 %y, 0
br label %done
done:
%yy = phi i1 [ %y_false, %false ], [ %y_true, %true ]
%r = udiv i1 %x, %yy
ret i1 %r
}
define i1 @srem_by_zero_indirect_is_poison(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @srem_by_zero_indirect_is_poison(
; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; CHECK: true:
; CHECK-NEXT: br label [[DONE:%.*]]
; CHECK: false:
; CHECK-NEXT: br label [[DONE]]
; CHECK: done:
; CHECK-NEXT: ret i1 poison
;
br i1 %c, label %true, label %false
true:
%y_true = and i1 %y, 0
br label %done
false:
%y_false = and i1 %y, 0
br label %done
done:
%yy = phi i1 [ %y_false, %false ], [ %y_true, %true ]
%r = srem i1 %x, %yy
ret i1 %r
}
define i1 @urem_by_zero_indirect_is_poison(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @urem_by_zero_indirect_is_poison(
; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; CHECK: true:
; CHECK-NEXT: br label [[DONE:%.*]]
; CHECK: false:
; CHECK-NEXT: br label [[DONE]]
; CHECK: done:
; CHECK-NEXT: ret i1 poison
;
br i1 %c, label %true, label %false
true:
%y_true = and i1 %y, 0
br label %done
false:
%y_false = and i1 %y, 0
br label %done
done:
%yy = phi i1 [ %y_false, %false ], [ %y_true, %true ]
%r = urem i1 %x, %yy
ret i1 %r
}
define i1 @sdiv_i1_is_op0(i1 %x, i1 %y) {
; CHECK-LABEL: @sdiv_i1_is_op0(
; CHECK-NEXT: ret i1 [[X:%.*]]
;
%r = sdiv i1 %x, %y
ret i1 %r
}
define i1 @udiv_i1_is_op0(i1 %x, i1 %y) {
; CHECK-LABEL: @udiv_i1_is_op0(
; CHECK-NEXT: ret i1 [[X:%.*]]
;
%r = udiv i1 %x, %y
ret i1 %r
}
define i1 @srem_i1_is_zero(i1 %x, i1 %y) {
; CHECK-LABEL: @srem_i1_is_zero(
; CHECK-NEXT: ret i1 false
;
%r = srem i1 %x, %y
ret i1 %r
}
define i1 @urem_i1_is_zero(i1 %x, i1 %y) {
; CHECK-LABEL: @urem_i1_is_zero(
; CHECK-NEXT: ret i1 false
;
%r = urem i1 %x, %y
ret i1 %r
}
declare void @llvm.assume(i1 noundef)
define i1 @pt62607() {
; CHECK-LABEL: @pt62607(
; CHECK-NEXT: entry_1:
; CHECK-NEXT: br label [[LOOP_5:%.*]]
; CHECK: loop_5:
; CHECK-NEXT: [[LOOP_CNT_I1_26_0:%.*]] = phi i1 [ false, [[ENTRY_1:%.*]] ], [ [[VAL_I1_55:%.*]], [[LOOP_5]] ]
; CHECK-NEXT: [[VAL_I1_55]] = xor i1 [[LOOP_CNT_I1_26_0]], true
; CHECK-NEXT: call void @llvm.assume(i1 [[VAL_I1_55]])
; CHECK-NEXT: br i1 poison, label [[LOOP_5]], label [[LOOP_EXIT_8:%.*]]
; CHECK: loop_exit_8:
; CHECK-NEXT: ret i1 false
;
entry_1:
%val_i1_38 = trunc i8 109 to i1
br label %loop_5
loop_5: ; preds = %loop_5, %entry_1
%loop_cnt_i1_26.0 = phi i1 [ false, %entry_1 ], [ %val_i1_55, %loop_5 ]
%val_i1_55 = add i1 %loop_cnt_i1_26.0, true
call void @llvm.assume(i1 %val_i1_55)
%val_i1_67 = udiv i1 %val_i1_38, %loop_cnt_i1_26.0
br i1 %val_i1_67, label %loop_5, label %loop_exit_8
loop_exit_8: ; preds = %loop_5
ret i1 false
}
|
