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
|
; RUN: opt -gvn %s -disable-output
; PR5631
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0"
define i32* @test1(i8* %name, i32 %namelen, i32* %o, i32 %expected_type) nounwind ssp {
entry:
br i1 undef, label %if.end13, label %while.body.preheader
if.end13: ; preds = %if.then6
br label %while.body.preheader
while.body.preheader: ; preds = %if.end13, %if.end
br label %while.body
while.body: ; preds = %while.body.backedge, %while.body.preheader
%o.addr.0 = phi i32* [ undef, %while.body.preheader ], [ %o.addr.0.be, %while.body.backedge ] ; <i32*> [#uses=2]
br i1 false, label %return.loopexit, label %lor.lhs.false
lor.lhs.false: ; preds = %while.body
%tmp20 = bitcast i32* %o.addr.0 to i32* ; <i32*> [#uses=1]
%tmp22 = load i32* %tmp20 ; <i32> [#uses=0]
br i1 undef, label %land.lhs.true24, label %if.end31
land.lhs.true24: ; preds = %lor.lhs.false
%call28 = call i32* @parse_object(i8* undef) nounwind ; <i32*> [#uses=0]
br i1 undef, label %return.loopexit, label %if.end31
if.end31: ; preds = %land.lhs.true24, %lor.lhs.false
br i1 undef, label %return.loopexit, label %if.end41
if.end41: ; preds = %if.end31
%tmp43 = bitcast i32* %o.addr.0 to i32* ; <i32*> [#uses=1]
%tmp45 = load i32* %tmp43 ; <i32> [#uses=0]
br i1 undef, label %if.then50, label %if.else
if.then50: ; preds = %if.end41
%tmp53 = load i32** undef ; <i32*> [#uses=1]
br label %while.body.backedge
if.else: ; preds = %if.end41
br i1 undef, label %if.then62, label %if.else67
if.then62: ; preds = %if.else
br label %while.body.backedge
while.body.backedge: ; preds = %if.then62, %if.then50
%o.addr.0.be = phi i32* [ %tmp53, %if.then50 ], [ undef, %if.then62 ] ; <i32*> [#uses=1]
br label %while.body
if.else67: ; preds = %if.else
ret i32* null
return.loopexit: ; preds = %if.end31, %land.lhs.true24, %while.body
ret i32* undef
}
declare i32* @parse_object(i8*)
%struct.attribute_spec = type { i8*, i32, i32, i8, i8, i8 }
@attribute_tables = external global [4 x %struct.attribute_spec*] ; <[4 x %struct.attribute_spec*]*> [#uses=2]
define void @test2() nounwind {
entry:
br label %bb69.i
bb69.i: ; preds = %bb57.i.preheader
%tmp4 = getelementptr inbounds [4 x %struct.attribute_spec*]* @attribute_tables, i32 0, i32 undef ; <%struct.attribute_spec**> [#uses=1]
%tmp3 = load %struct.attribute_spec** %tmp4, align 4 ; <%struct.attribute_spec*> [#uses=1]
br label %bb65.i
bb65.i: ; preds = %bb65.i.preheader, %bb64.i
%storemerge6.i = phi i32 [ 1, %bb64.i ], [ 0, %bb69.i ] ; <i32> [#uses=3]
%scevgep14 = getelementptr inbounds %struct.attribute_spec* %tmp3, i32 %storemerge6.i, i32 0 ; <i8**> [#uses=1]
%tmp2 = load i8** %scevgep14, align 4 ; <i8*> [#uses=0]
%tmp = load %struct.attribute_spec** %tmp4, align 4 ; <%struct.attribute_spec*> [#uses=1]
%scevgep1516 = getelementptr inbounds %struct.attribute_spec* %tmp, i32 %storemerge6.i, i32 0 ; <i8**> [#uses=0]
unreachable
bb64.i: ; Unreachable
br label %bb65.i
bb66.i: ; Unreachable
br label %bb69.i
}
; rdar://7438974
@g = external global i64, align 8
define i32* @test3() {
do.end17.i:
%tmp18.i = load i7** undef
%tmp1 = bitcast i7* %tmp18.i to i8*
br i1 undef, label %do.body36.i, label %if.then21.i
if.then21.i:
%tmp2 = bitcast i7* %tmp18.i to i8*
ret i32* undef
do.body36.i:
%ivar38.i = load i64* @g
%tmp3 = bitcast i7* %tmp18.i to i8*
%add.ptr39.sum.i = add i64 %ivar38.i, 8
%tmp40.i = getelementptr inbounds i8* %tmp3, i64 %add.ptr39.sum.i
%tmp4 = bitcast i8* %tmp40.i to i64*
%tmp41.i = load i64* %tmp4
br i1 undef, label %if.then48.i, label %do.body57.i
if.then48.i:
%call54.i = call i32 @foo2()
br label %do.body57.i
do.body57.i:
%tmp58.i = load i7** undef
%ivar59.i = load i64* @g
%tmp5 = bitcast i7* %tmp58.i to i8*
%add.ptr65.sum.i = add i64 %ivar59.i, 8
%tmp66.i = getelementptr inbounds i8* %tmp5, i64 %add.ptr65.sum.i
%tmp6 = bitcast i8* %tmp66.i to i64*
%tmp67.i = load i64* %tmp6
ret i32* undef
}
declare i32 @foo2()
define i32 @test4() {
entry:
ret i32 0
dead:
%P2 = getelementptr i32 *%P2, i32 52
%Q2 = getelementptr i32 *%Q2, i32 52
store i32 4, i32* %P2
%A = load i32* %Q2
br i1 true, label %dead, label %dead2
dead2:
ret i32 %A
}
; PR9841
define fastcc i8 @test5(i8* %P) nounwind {
entry:
%0 = load i8* %P, align 2
%Q = getelementptr i8* %P, i32 1
%1 = load i8* %Q, align 1
ret i8 %1
}
|
