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
220
221
222
223
224
225
226
227
228
229
230
|
; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/fsafdo.extbinary.afdo | opt -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s
; RUN: opt < %s -passes=sample-profile -profile-isfs -sample-profile-file=%S/Inputs/fsafdo.prof | opt -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s
target triple = "x86_64-unknown-linux-gnu"
@sum = dso_local local_unnamed_addr global i32 0, align 4
declare i32 @bar(i32 %i) #0
declare void @work(i32 %i) #2
define dso_local void @foo() #0 !dbg !29 {
; CHECK: Printing analysis {{.*}} for function 'foo':
entry:
br label %for.cond1.preheader, !dbg !30
; CHECK: edge entry -> for.cond1.preheader probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
for.cond1.preheader:
%j.012 = phi i32 [ 0, %entry ], [ %inc11, %if.end9.3 ]
%mul = mul nuw nsw i32 %j.012, 48
%call = tail call i32 @bar(i32 %mul), !dbg !32
%0 = and i32 %call, 1, !dbg !33
%tobool.not = icmp eq i32 %0, 0, !dbg !33
br i1 %tobool.not, label %if.end, label %if.then, !dbg !35
; CHECK: edge for.cond1.preheader -> if.end probability is 0x3f6262b8 / 0x80000000 = 49.52%
; CHECK: edge for.cond1.preheader -> if.then probability is 0x409d9d48 / 0x80000000 = 50.48%
if.then:
%mul4 = shl nsw i32 %call, 1, !dbg !36
tail call void @work(i32 %mul4), !dbg !37
br label %if.end, !dbg !38
; CHECK: edge if.then -> if.end probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end:
%1 = and i32 %call, 3, !dbg !39
%tobool6.not = icmp eq i32 %1, 0, !dbg !39
br i1 %tobool6.not, label %if.end9, label %if.then7, !dbg !40
; CHECK: edge if.end -> if.end9 probability is 0x22c6bac3 / 0x80000000 = 27.17%
; CHECK: edge if.end -> if.then7 probability is 0x5d39453d / 0x80000000 = 72.83%
if.then7:
%mul8 = mul nsw i32 %call, 3, !dbg !41
tail call void @work(i32 %mul8), !dbg !42
br label %if.end9, !dbg !43
; CHECK: edge if.then7 -> if.end9 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end9:
%add.1 = or i32 %mul, 1, !dbg !44
%call.1 = tail call i32 @bar(i32 %add.1), !dbg !32
%2 = and i32 %call.1, 1, !dbg !33
%tobool.not.1 = icmp eq i32 %2, 0, !dbg !33
br i1 %tobool.not.1, label %if.end.1, label %if.then.1, !dbg !35
; CHECK: edge if.end9 -> if.end.1 probability is 0x3f6262b8 / 0x80000000 = 49.52%
; CHECK: edge if.end9 -> if.then.1 probability is 0x409d9d48 / 0x80000000 = 50.48%
for.end12:
ret void, !dbg !45
if.then.1:
%mul4.1 = shl nsw i32 %call.1, 1, !dbg !36
tail call void @work(i32 %mul4.1), !dbg !37
br label %if.end.1, !dbg !38
; CHECK: edge if.then.1 -> if.end.1 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end.1:
%3 = and i32 %call.1, 3, !dbg !39
%tobool6.not.1 = icmp eq i32 %3, 0, !dbg !39
br i1 %tobool6.not.1, label %if.end9.1, label %if.then7.1, !dbg !40
; CHECK: edge if.end.1 -> if.end9.1 probability is 0x22c6bac3 / 0x80000000 = 27.17%
; CHECK: edge if.end.1 -> if.then7.1 probability is 0x5d39453d / 0x80000000 = 72.83%
if.then7.1:
%mul8.1 = mul nsw i32 %call.1, 3, !dbg !41
tail call void @work(i32 %mul8.1), !dbg !42
br label %if.end9.1, !dbg !43
; CHECK: edge if.then7.1 -> if.end9.1 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end9.1:
%add.2 = or i32 %mul, 2, !dbg !44
%call.2 = tail call i32 @bar(i32 %add.2), !dbg !32
%4 = and i32 %call.2, 1, !dbg !33
%tobool.not.2 = icmp eq i32 %4, 0, !dbg !33
br i1 %tobool.not.2, label %if.end.2, label %if.then.2, !dbg !35
; CHECK: edge if.end9.1 -> if.end.2 probability is 0x3f6262b8 / 0x80000000 = 49.52%
; CHECK: edge if.end9.1 -> if.then.2 probability is 0x409d9d48 / 0x80000000 = 50.48%
if.then.2:
%mul4.2 = shl nsw i32 %call.2, 1, !dbg !36
tail call void @work(i32 %mul4.2), !dbg !37
br label %if.end.2, !dbg !38
; CHECK: edge if.then.2 -> if.end.2 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end.2:
%5 = and i32 %call.2, 3, !dbg !39
%tobool6.not.2 = icmp eq i32 %5, 0, !dbg !39
br i1 %tobool6.not.2, label %if.end9.2, label %if.then7.2, !dbg !40
; CHECK: edge if.end.2 -> if.end9.2 probability is 0x22c6bac3 / 0x80000000 = 27.17%
; CHECK: edge if.end.2 -> if.then7.2 probability is 0x5d39453d / 0x80000000 = 72.83%
if.then7.2:
%mul8.2 = mul nsw i32 %call.2, 3, !dbg !41
tail call void @work(i32 %mul8.2), !dbg !42
br label %if.end9.2, !dbg !43
; CHECK: edge if.then7.2 -> if.end9.2 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end9.2:
%add.3 = or i32 %mul, 3, !dbg !44
%call.3 = tail call i32 @bar(i32 %add.3), !dbg !32
%6 = and i32 %call.3, 1, !dbg !33
%tobool.not.3 = icmp eq i32 %6, 0, !dbg !33
br i1 %tobool.not.3, label %if.end.3, label %if.then.3, !dbg !35
; CHECK: edge if.end9.2 -> if.end.3 probability is 0x3f6262b8 / 0x80000000 = 49.52%
; CHECK: edge if.end9.2 -> if.then.3 probability is 0x409d9d48 / 0x80000000 = 50.48%
if.then.3:
%mul4.3 = shl nsw i32 %call.3, 1, !dbg !36
tail call void @work(i32 %mul4.3), !dbg !37
br label %if.end.3, !dbg !38
; CHECK: edge if.then.3 -> if.end.3 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end.3:
%7 = and i32 %call.3, 3, !dbg !39
%tobool6.not.3 = icmp eq i32 %7, 0, !dbg !39
br i1 %tobool6.not.3, label %if.end9.3, label %if.then7.3, !dbg !40
; CHECK: edge if.end.3 -> if.end9.3 probability is 0x22c6bac3 / 0x80000000 = 27.17%
; CHECK: edge if.end.3 -> if.then7.3 probability is 0x5d39453d / 0x80000000 = 72.83%
if.then7.3:
%mul8.3 = mul nsw i32 %call.3, 3, !dbg !41
tail call void @work(i32 %mul8.3), !dbg !42
br label %if.end9.3, !dbg !43
; CHECK: edge if.then7.3 -> if.end9.3 probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge]
if.end9.3:
%inc11 = add nuw nsw i32 %j.012, 1, !dbg !46
%exitcond.not = icmp eq i32 %inc11, 48, !dbg !48
br i1 %exitcond.not, label %for.end12, label %for.cond1.preheader, !dbg !30, !llvm.loop !49
; CHECK: edge if.end9.3 -> for.end12 probability is 0x00834dd9 / 0x80000000 = 0.40%
; CHECK: edge if.end9.3 -> for.cond1.preheader probability is 0x7f7cb227 / 0x80000000 = 99.60% [HOT edge]
}
define dso_local i32 @main() #3 !dbg !52 {
entry:
br label %for.body, !dbg !53
for.body:
%i.03 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
tail call void @foo(), !dbg !55
%inc = add nuw nsw i32 %i.03, 1, !dbg !56
%exitcond.not = icmp eq i32 %inc, 10000000, !dbg !58
br i1 %exitcond.not, label %for.end, label %for.body, !dbg !53, !llvm.loop !60
for.end:
ret i32 0, !dbg !63
}
attributes #0 = { noinline nounwind uwtable "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"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile"}
attributes #1 = { argmemonly nounwind willreturn }
attributes #2 = { nofree noinline norecurse nounwind uwtable "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"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { nounwind uwtable "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"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None)
!1 = !DIFile(filename: "unroll.c", directory: "a/")
!2 = !{}
!3 = !{i32 7, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!7 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!8 = !DISubroutineType(types: !2)
!9 = !DILocation(line: 4, column: 3, scope: !7)
!10 = !DILocation(line: 5, column: 5, scope: !7)
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !13, i64 0}
!13 = !{!"omnipotent char", !14, i64 0}
!14 = !{!"Simple C/C++ TBAA"}
!15 = !DILocation(line: 6, column: 10, scope: !7)
!16 = !DILocation(line: 7, column: 1, scope: !7)
!17 = !DILocation(line: 6, column: 3, scope: !18)
!18 = !DILexicalBlockFile(scope: !7, file: !1, discriminator: 1)
!19 = distinct !DISubprogram(name: "work", scope: !1, file: !1, line: 10, type: !8, scopeLine: 10, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!20 = !DILocation(line: 11, column: 7, scope: !19)
!21 = !DILocation(line: 11, column: 11, scope: !22)
!22 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 1)
!23 = !DILocation(line: 11, column: 11, scope: !24)
!24 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 2)
!25 = !DILocation(line: 11, column: 7, scope: !26)
!26 = !DILexicalBlockFile(scope: !19, file: !1, discriminator: 3)
!27 = !DILocation(line: 0, scope: !22)
!28 = !DILocation(line: 15, column: 1, scope: !19)
!29 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 17, type: !8, scopeLine: 17, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!30 = !DILocation(line: 19, column: 3, scope: !31)
!31 = !DILexicalBlockFile(scope: !29, file: !1, discriminator: 2)
!32 = !DILocation(line: 21, column: 16, scope: !31)
!33 = !DILocation(line: 22, column: 14, scope: !34)
!34 = !DILexicalBlockFile(scope: !29, file: !1, discriminator: 1)
!35 = !DILocation(line: 22, column: 11, scope: !31)
!36 = !DILocation(line: 23, column: 16, scope: !29)
!37 = !DILocation(line: 23, column: 9, scope: !34)
!38 = !DILocation(line: 23, column: 9, scope: !31)
!39 = !DILocation(line: 24, column: 14, scope: !34)
!40 = !DILocation(line: 24, column: 11, scope: !31)
!41 = !DILocation(line: 25, column: 16, scope: !29)
!42 = !DILocation(line: 25, column: 9, scope: !34)
!43 = !DILocation(line: 25, column: 9, scope: !31)
!44 = !DILocation(line: 21, column: 21, scope: !34)
!45 = !DILocation(line: 27, column: 1, scope: !29)
!46 = !DILocation(line: 19, column: 24, scope: !47)
!47 = !DILexicalBlockFile(scope: !29, file: !1, discriminator: 3)
!48 = !DILocation(line: 19, column: 17, scope: !34)
!49 = distinct !{!49, !50, !51}
!50 = !DILocation(line: 19, column: 3, scope: !29)
!51 = !DILocation(line: 26, column: 3, scope: !29)
!52 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 29, type: !8, scopeLine: 29, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!53 = !DILocation(line: 31, column: 3, scope: !54)
!54 = !DILexicalBlockFile(scope: !52, file: !1, discriminator: 2)
!55 = !DILocation(line: 32, column: 5, scope: !52)
!56 = !DILocation(line: 31, column: 30, scope: !57)
!57 = !DILexicalBlockFile(scope: !52, file: !1, discriminator: 3)
!58 = !DILocation(line: 31, column: 17, scope: !59)
!59 = !DILexicalBlockFile(scope: !52, file: !1, discriminator: 1)
!60 = distinct !{!60, !61, !62}
!61 = !DILocation(line: 31, column: 3, scope: !52)
!62 = !DILocation(line: 33, column: 3, scope: !52)
!63 = !DILocation(line: 34, column: 1, scope: !52)
|
