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
|
; RUN: llc %s -o - -verify-machineinstrs | FileCheck %s
target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
target triple = "thumbv7s-apple-ios8.0.0"
%struct.cells = type { i32, i32, ptr }
@reg_len = external global i32, align 4
; The thumb2 size reduction pass commutes arguments to make the first src of an add the same as the dest.
; It needs to also move the internal flag when commuting arguments.
; CHECK-LABEL: @simulate
; Function Attrs: nounwind optsize ssp
define i32 @simulate(i32 %iterations, ptr nocapture %present, double %prob, ptr nocapture readonly %structure) {
entry:
%0 = load i32, ptr @reg_len, align 4, !tbaa !3
%sub = add nsw i32 %0, -1
%div = sdiv i32 %sub, 31
%rem2 = srem i32 %sub, 31
%cmp35202 = icmp sgt i32 %rem2, 0
br label %for.cond3.preheader
for.cond3.preheader: ; preds = %if.end85, %entry
%call192 = tail call i32 @lrand48() #2
br label %for.cond6.preheader
for.cond34.preheader: ; preds = %for.inc30
br i1 %cmp35202, label %for.body37, label %for.end73
for.cond6.preheader: ; preds = %for.inc30, %for.cond3.preheader
%call197 = phi i32 [ %call, %for.inc30 ], [ %call192, %for.cond3.preheader ]
%i.0196 = phi i32 [ %inc31, %for.inc30 ], [ 0, %for.cond3.preheader ]
%temp.1195 = phi ptr [ %5, %for.inc30 ], [ %present, %for.cond3.preheader ]
%savefaulty.0194 = phi i32 [ %add12, %for.inc30 ], [ 0, %for.cond3.preheader ]
%savef_free.0193 = phi i32 [ %add11, %for.inc30 ], [ 0, %for.cond3.preheader ]
br label %for.body8
for.body8: ; preds = %for.body8, %for.cond6.preheader
%randv.0190 = phi i32 [ %call197, %for.cond6.preheader ], [ %shr, %for.body8 ]
%j.0189 = phi i32 [ 0, %for.cond6.preheader ], [ %inc, %for.body8 ]
%temp.2188 = phi ptr [ %temp.1195, %for.cond6.preheader ], [ %5, %for.body8 ]
%savefaulty.1187 = phi i32 [ %savefaulty.0194, %for.cond6.preheader ], [ %add12, %for.body8 ]
%savef_free.1186 = phi i32 [ %savef_free.0193, %for.cond6.preheader ], [ %add11, %for.body8 ]
%1 = load i32, ptr %temp.2188, align 4, !tbaa !7
%add11 = add nsw i32 %1, %savef_free.1186
%faulty = getelementptr inbounds %struct.cells, ptr %temp.2188, i32 0, i32 1
%2 = load i32, ptr %faulty, align 4, !tbaa !10
%add12 = add nsw i32 %2, %savefaulty.1187
%next = getelementptr inbounds %struct.cells, ptr %temp.2188, i32 0, i32 2
%3 = load ptr, ptr %next, align 4, !tbaa !11
%4 = load i32, ptr %3, align 4, !tbaa !7
%add14 = add nsw i32 %4, %randv.0190
%and = and i32 %add14, 1
store i32 %and, ptr %temp.2188, align 4, !tbaa !7
%call16 = tail call i32 @lrand48() #2
%rem17 = srem i32 %call16, 1000
%conv18 = sitofp i32 %rem17 to double
%div19 = fdiv double %conv18, 1.000000e+03
%cmp20 = fcmp olt double %div19, %prob
%xor = zext i1 %cmp20 to i32
%randv.1 = xor i32 %xor, %randv.0190
%5 = load ptr, ptr %next, align 4, !tbaa !11
%faulty25 = getelementptr inbounds %struct.cells, ptr %5, i32 0, i32 1
%6 = load i32, ptr %faulty25, align 4, !tbaa !10
%add26 = add nsw i32 %randv.1, %6
%and27 = and i32 %add26, 1
store i32 %and27, ptr %faulty, align 4, !tbaa !10
%shr = ashr i32 %randv.0190, 1
%inc = add nuw nsw i32 %j.0189, 1
%exitcond = icmp eq i32 %inc, 31
br i1 %exitcond, label %for.inc30, label %for.body8
for.inc30: ; preds = %for.body8
%inc31 = add nuw nsw i32 %i.0196, 1
%cmp4 = icmp slt i32 %inc31, %div
%call = tail call i32 @lrand48() #2
br i1 %cmp4, label %for.cond6.preheader, label %for.cond34.preheader
for.body37: ; preds = %for.body37, %for.cond34.preheader
%randv.2207 = phi i32 [ %shr70, %for.body37 ], [ %call, %for.cond34.preheader ]
%temp.3205 = phi ptr [ %9, %for.body37 ], [ %5, %for.cond34.preheader ]
%.pre220 = getelementptr inbounds %struct.cells, ptr %temp.3205, i32 0, i32 1
%next50 = getelementptr inbounds %struct.cells, ptr %temp.3205, i32 0, i32 2
%7 = load ptr, ptr %next50, align 4, !tbaa !11
%8 = load i32, ptr %7, align 4, !tbaa !7
%add52 = add nsw i32 %8, %randv.2207
%and53 = and i32 %add52, 1
store i32 %and53, ptr %temp.3205, align 4, !tbaa !7
%call55 = tail call i32 @lrand48() #2
%rem56 = srem i32 %call55, 1000
%conv57 = sitofp i32 %rem56 to double
%div58 = fdiv double %conv57, 1.000000e+03
%cmp59 = fcmp olt double %div58, %prob
%xor62 = zext i1 %cmp59 to i32
%randv.3 = xor i32 %xor62, %randv.2207
%9 = load ptr, ptr %next50, align 4, !tbaa !11
%faulty65 = getelementptr inbounds %struct.cells, ptr %9, i32 0, i32 1
%10 = load i32, ptr %faulty65, align 4, !tbaa !10
%add66 = add nsw i32 %randv.3, %10
%and67 = and i32 %add66, 1
store i32 %and67, ptr %.pre220, align 4, !tbaa !10
%shr70 = ashr i32 %randv.2207, 1
br label %for.body37
for.end73: ; preds = %for.cond34.preheader
%call74 = tail call i32 @lrand48() #2
%11 = load i32, ptr @reg_len, align 4, !tbaa !3
%sub75 = add nsw i32 %11, -1
%arrayidx76 = getelementptr inbounds i8, ptr %structure, i32 %sub75
%12 = load i8, ptr %arrayidx76, align 1, !tbaa !12
%cmp78 = icmp eq i8 %12, 49
br i1 %cmp78, label %if.then80, label %for.end73.if.end85_crit_edge
for.end73.if.end85_crit_edge: ; preds = %for.end73
%.pre222 = getelementptr inbounds %struct.cells, ptr %5, i32 0, i32 1
br label %if.end85
if.then80: ; preds = %for.end73
%13 = load i32, ptr %5, align 4, !tbaa !7
%add82 = add nsw i32 %13, %add11
%faulty83 = getelementptr inbounds %struct.cells, ptr %5, i32 0, i32 1
%14 = load i32, ptr %faulty83, align 4, !tbaa !10
%add84 = add nsw i32 %14, %add12
br label %if.end85
if.end85: ; preds = %if.then80, %for.end73.if.end85_crit_edge
%faulty100.pre-phi = phi ptr [ %.pre222, %for.end73.if.end85_crit_edge ], [ %faulty83, %if.then80 ]
%savef_free.5 = phi i32 [ %add11, %for.end73.if.end85_crit_edge ], [ %add82, %if.then80 ]
%savefaulty.5 = phi i32 [ %add12, %for.end73.if.end85_crit_edge ], [ %add84, %if.then80 ]
%add86 = add nsw i32 %savef_free.5, %call74
%and87 = and i32 %add86, 1
store i32 %and87, ptr %5, align 4, !tbaa !7
%call89 = tail call i32 @lrand48() #2
%rem90 = srem i32 %call89, 10000
%conv91 = sitofp i32 %rem90 to double
%div92 = fdiv double %conv91, 1.000000e+04
%cmp93 = fcmp olt double %div92, %prob
%xor96 = zext i1 %cmp93 to i32
%randv.4 = xor i32 %xor96, %call74
%add98 = add nsw i32 %randv.4, %savefaulty.5
%and99 = and i32 %add98, 1
store i32 %and99, ptr %faulty100.pre-phi, align 4, !tbaa !10
br label %for.cond3.preheader
}
; Function Attrs: optsize
declare i32 @lrand48()
attributes #2 = { nounwind optsize }
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 1, !"min_enum_size", i32 4}
!2 = !{!"clang version 3.7.0 (trunk 236243)"}
!3 = !{!4, !4, i64 0}
!4 = !{!"int", !5, i64 0}
!5 = !{!"omnipotent char", !6, i64 0}
!6 = !{!"Simple C/C++ TBAA"}
!7 = !{!8, !4, i64 0}
!8 = !{!"cells", !4, i64 0, !4, i64 4, !9, i64 8}
!9 = !{!"any pointer", !5, i64 0}
!10 = !{!8, !4, i64 4}
!11 = !{!8, !9, i64 8}
!12 = !{!5, !5, i64 0}
|
