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
|
; RUN: opt -S -licm < %s | FileCheck %s
; CHECK: %arrayidx4.promoted = load i32, i32* %arrayidx4, align 1, !tbaa !59
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@a = dso_local local_unnamed_addr global i16 0, align 2, !dbg !0
@b = dso_local local_unnamed_addr global i16 0, align 2, !dbg !6
define dso_local void @c(i32 %d) local_unnamed_addr #0 !dbg !13 {
entry:
call void @llvm.dbg.value(metadata i32 undef, metadata !18, metadata !DIExpression()), !dbg !19
ret void, !dbg !20
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
define dso_local signext i16 @e(i32 %d) local_unnamed_addr #0 !dbg !21 {
entry:
call void @llvm.dbg.value(metadata i32 %d, metadata !25, metadata !DIExpression()), !dbg !26
%conv = trunc i32 %d to i16, !dbg !27
ret i16 %conv, !dbg !28
}
define dso_local signext i16 @g() local_unnamed_addr #2 !dbg !29 {
entry:
%l_284 = alloca [2 x [3 x [6 x i32]]], align 16
%0 = bitcast [2 x [3 x [6 x i32]]]* %l_284 to i8*, !dbg !39
call void @llvm.lifetime.start.p0i8(i64 144, i8* nonnull %0) #4, !dbg !39
call void @llvm.dbg.declare(metadata [2 x [3 x [6 x i32]]]* %l_284, metadata !33, metadata !DIExpression()), !dbg !40
%1 = load i16, i16* @a, align 2, !dbg !41, !tbaa !44
%cmp11 = icmp sgt i16 %1, -1, !dbg !48
br i1 %cmp11, label %for.body.lr.ph, label %cleanup, !dbg !49
for.body.lr.ph: ; preds = %entry
br label %for.body, !dbg !49
for.body: ; preds = %for.body.lr.ph, %for.cond2
%call = call signext i16 @e(i32 1), !dbg !50
%tobool = icmp eq i16 %call, 0, !dbg !50
br i1 %tobool, label %for.cond2, label %for.body.cleanup_crit_edge, !dbg !53
for.cond2: ; preds = %for.body
%arrayidx4 = getelementptr inbounds [2 x [3 x [6 x i32]]], [2 x [3 x [6 x i32]]]* %l_284, i64 0, i64 1, i64 2, i64 5, !dbg !54
store i32 0, i32* %arrayidx4, align 4, !dbg !58, !tbaa !59
%arrayidx8 = getelementptr inbounds [2 x [3 x [6 x i32]]], [2 x [3 x [6 x i32]]]* %l_284, i64 0, i64 1, i64 1, i64 4, !dbg !61
%2 = load i32, i32* %arrayidx8, align 8, !dbg !61, !tbaa !59
%conv9 = trunc i32 %2 to i16, !dbg !61
store i16 %conv9, i16* @b, align 2, !dbg !62, !tbaa !44
%3 = load i16, i16* @a, align 2, !dbg !41, !tbaa !44
%cmp = icmp sgt i16 %3, -1, !dbg !48
br i1 %cmp, label %for.body, label %for.cond.cleanup_crit_edge, !dbg !49, !llvm.loop !63
for.cond.cleanup_crit_edge: ; preds = %for.cond2
br label %cleanup, !dbg !49
for.body.cleanup_crit_edge: ; preds = %for.body
br label %cleanup, !dbg !53
cleanup: ; preds = %for.body.cleanup_crit_edge, %for.cond.cleanup_crit_edge, %entry
call void @llvm.lifetime.end.p0i8(i64 144, i8* nonnull %0) #4, !dbg !66
ret i16 1, !dbg !66
}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #3
; Function Attrs: norecurse nounwind readnone uwtable
define internal signext i16 @f(i32 %d) #0 !dbg !67 {
entry:
call void @llvm.dbg.value(metadata i32 %d, metadata !69, metadata !DIExpression()), !dbg !70
ret i16 undef, !dbg !71
}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #3
; Function Attrs: nounwind uwtable
define dso_local i32 @main() local_unnamed_addr #2 !dbg !72 {
entry:
%call = call signext i16 @g(), !dbg !75
ret i32 0, !dbg !76
}
declare void @llvm.dbg.value(metadata, metadata, metadata)
attributes #0 = { norecurse nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone speculatable willreturn }
attributes #2 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { argmemonly nounwind willreturn }
attributes #4 = { nounwind }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!9, !10, !11}
!llvm.ident = !{!12}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 11.0.0 (https://github.com/llvm/llvm-project.git 237d0e3c0416abf9919406bcc92874cfd15f5e0c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
!3 = !DIFile(filename: "a.c", directory: "/home/davide/lldb-build/bin")
!4 = !{}
!5 = !{!0, !6}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)
!8 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
!9 = !{i32 7, !"Dwarf Version", i32 4}
!10 = !{i32 2, !"Debug Info Version", i32 3}
!11 = !{i32 1, !"wchar_size", i32 4}
!12 = !{!"clang version 11.0.0 (https://github.com/llvm/llvm-project.git 237d0e3c0416abf9919406bcc92874cfd15f5e0c)"}
!13 = distinct !DISubprogram(name: "c", scope: !3, file: !3, line: 2, type: !14, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !17)
!14 = !DISubroutineType(types: !15)
!15 = !{null, !16}
!16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!17 = !{!18}
!18 = !DILocalVariable(name: "d", arg: 1, scope: !13, file: !3, line: 2, type: !16)
!19 = !DILocation(line: 0, scope: !13)
!20 = !DILocation(line: 2, column: 13, scope: !13)
!21 = distinct !DISubprogram(name: "e", scope: !3, file: !3, line: 3, type: !22, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !24)
!22 = !DISubroutineType(types: !23)
!23 = !{!8, !16}
!24 = !{!25}
!25 = !DILocalVariable(name: "d", arg: 1, scope: !21, file: !3, line: 3, type: !16)
!26 = !DILocation(line: 0, scope: !21)
!27 = !DILocation(line: 3, column: 22, scope: !21)
!28 = !DILocation(line: 3, column: 15, scope: !21)
!29 = distinct !DISubprogram(name: "g", scope: !3, file: !3, line: 5, type: !30, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !32)
!30 = !DISubroutineType(types: !31)
!31 = !{!8}
!32 = !{!33}
!33 = !DILocalVariable(name: "l_284", scope: !29, file: !3, line: 6, type: !34)
!34 = !DICompositeType(tag: DW_TAG_array_type, baseType: !16, size: 1152, elements: !35)
!35 = !{!36, !37, !38}
!36 = !DISubrange(count: 2)
!37 = !DISubrange(count: 3)
!38 = !DISubrange(count: 6)
!39 = !DILocation(line: 6, column: 3, scope: !29)
!40 = !DILocation(line: 6, column: 7, scope: !29)
!41 = !DILocation(line: 7, column: 10, scope: !42)
!42 = distinct !DILexicalBlock(scope: !43, file: !3, line: 7, column: 3)
!43 = distinct !DILexicalBlock(scope: !29, file: !3, line: 7, column: 3)
!44 = !{!45, !45, i64 0}
!45 = !{!"short", !46, i64 0}
!46 = !{!"omnipotent char", !47, i64 0}
!47 = !{!"Simple C/C++ TBAA"}
!48 = !DILocation(line: 7, column: 12, scope: !42)
!49 = !DILocation(line: 7, column: 3, scope: !43)
!50 = !DILocation(line: 8, column: 9, scope: !51)
!51 = distinct !DILexicalBlock(scope: !52, file: !3, line: 8, column: 9)
!52 = distinct !DILexicalBlock(scope: !42, file: !3, line: 7, column: 19)
!53 = !DILocation(line: 8, column: 9, scope: !52)
!54 = !DILocation(line: 11, column: 7, scope: !55)
!55 = distinct !DILexicalBlock(scope: !56, file: !3, line: 10, column: 14)
!56 = distinct !DILexicalBlock(scope: !57, file: !3, line: 10, column: 5)
!57 = distinct !DILexicalBlock(scope: !52, file: !3, line: 10, column: 5)
!58 = !DILocation(line: 11, column: 22, scope: !55)
!59 = !{!60, !60, i64 0}
!60 = !{!"int", !46, i64 0}
!61 = !DILocation(line: 16, column: 9, scope: !52)
!62 = !DILocation(line: 16, column: 7, scope: !52)
!63 = distinct !{!63, !49, !64, !65}
!64 = !DILocation(line: 17, column: 3, scope: !43)
!65 = !{!"llvm.loop.unroll.disable"}
!66 = !DILocation(line: 18, column: 1, scope: !29)
!67 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 4, type: !22, scopeLine: 4, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !68)
!68 = !{!69}
!69 = !DILocalVariable(name: "d", arg: 1, scope: !67, file: !3, line: 4, type: !16)
!70 = !DILocation(line: 0, scope: !67)
!71 = !DILocation(line: 4, column: 21, scope: !67)
!72 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 19, type: !73, scopeLine: 19, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
!73 = !DISubroutineType(types: !74)
!74 = !{!16}
!75 = !DILocation(line: 19, column: 14, scope: !72)
!76 = !DILocation(line: 19, column: 19, scope: !72)
|
