File: cov-zero-samples.ll

package info (click to toggle)
llvm-toolchain-5.0 1:5.0.1-2~bpo9+1
  • links: PTS, VCS
  • area: main
  • in suites: stretch-backports
  • size: 553,688 kB
  • sloc: cpp: 2,878,786; ansic: 584,110; asm: 246,252; python: 124,751; objc: 106,925; sh: 21,542; lisp: 8,628; pascal: 5,885; ml: 5,544; perl: 5,312; makefile: 2,208; cs: 2,022; xml: 686; php: 212; csh: 117
file content (147 lines) | stat: -rw-r--r-- 7,489 bytes parent folder | download
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
; RUN: opt < %s -instcombine -sample-profile -sample-profile-file=%S/Inputs/cov-zero-samples.prof -sample-profile-check-record-coverage=100 -pass-remarks=sample-profile -o /dev/null 2>&1 | FileCheck %s
; RUN: opt < %s -passes="function(instcombine),sample-profile" -sample-profile-file=%S/Inputs/cov-zero-samples.prof -sample-profile-check-record-coverage=100 -pass-remarks=sample-profile -o /dev/null 2>&1 | FileCheck %s
;
; CHECK: remark: cov-zero-samples.cc:9:29: Applied 404065 samples from profile (offset: 2.1)
; CHECK: remark: cov-zero-samples.cc:10:9: Applied 443089 samples from profile (offset: 3)
; CHECK: remark: cov-zero-samples.cc:10:36: Applied 0 samples from profile (offset: 3.1)
; CHECK: remark: cov-zero-samples.cc:11:12: Applied 404066 samples from profile (offset: 4)
; CHECK: remark: cov-zero-samples.cc:13:25: Applied 0 samples from profile (offset: 6)
; CHECK: remark: cov-zero-samples.cc:14:3: Applied 0 samples from profile (offset: 7)
; CHECK: remark: cov-zero-samples.cc:10:9: most popular destination for conditional branches at cov-zero-samples.cc:9:3
; CHECK: remark: cov-zero-samples.cc:11:12: most popular destination for conditional branches at cov-zero-samples.cc:10:9
;
; Coverage for this profile should be 100%
; CHECK-NOT: warning: cov-zero-samples.cc:1:

source_filename = "test/Transforms/SampleProfile/cov-zero-samples.ll"

@N = global i64 8000000000, align 8, !dbg !0
@.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1

define i32 @_Z12never_calledi(i32 %i) !dbg !11 {
entry:
  ret i32 0, !dbg !15
}

; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #0

define i32 @main() !dbg !17 {
entry:
  %retval = alloca i32, align 4
  %sum = alloca i32, align 4
  %i = alloca i64, align 8
  store i32 0, i32* %retval, align 4
  call void @llvm.dbg.declare(metadata i32* %sum, metadata !20, metadata !21), !dbg !22
  store i32 0, i32* %sum, align 4, !dbg !22
  call void @llvm.dbg.declare(metadata i64* %i, metadata !23, metadata !21), !dbg !25
  store i64 0, i64* %i, align 8, !dbg !25
  br label %for.cond, !dbg !26

for.cond:                                         ; preds = %for.inc, %entry

  %0 = load i64, i64* %i, align 8, !dbg !27
  %1 = load volatile i64, i64* @N, align 8, !dbg !30
  %cmp = icmp slt i64 %0, %1, !dbg !31
  br i1 %cmp, label %for.body, label %for.end, !dbg !32

for.body:                                         ; preds = %for.cond
  %2 = load i64, i64* %i, align 8, !dbg !33
  %3 = load volatile i64, i64* @N, align 8, !dbg !36
  %cmp1 = icmp sgt i64 %2, %3, !dbg !37
  br i1 %cmp1, label %if.then, label %if.end, !dbg !38

if.then:                                          ; preds = %for.body
  %4 = load i64, i64* %i, align 8, !dbg !39
  %conv = trunc i64 %4 to i32, !dbg !39
  %call = call i32 @_Z12never_calledi(i32 %conv), !dbg !41
  %5 = load i32, i32* %sum, align 4, !dbg !42
  %add = add nsw i32 %5, %call, !dbg !42
  store i32 %add, i32* %sum, align 4, !dbg !42
  br label %if.end, !dbg !43

if.end:                                           ; preds = %if.then, %for.body
  %6 = load i64, i64* %i, align 8, !dbg !44
  %div = sdiv i64 %6, 239, !dbg !45
  %7 = load i32, i32* %sum, align 4, !dbg !46
  %conv2 = sext i32 %7 to i64, !dbg !46
  %mul = mul nsw i64 %conv2, %div, !dbg !46
  %conv3 = trunc i64 %mul to i32, !dbg !46
  store i32 %conv3, i32* %sum, align 4, !dbg !46
  br label %for.inc, !dbg !47

for.inc:                                          ; preds = %if.end
  %8 = load i64, i64* %i, align 8, !dbg !48
  %inc = add nsw i64 %8, 1, !dbg !48
  store i64 %inc, i64* %i, align 8, !dbg !48
  br label %for.cond, !dbg !50

for.end:                                          ; preds = %for.cond
  %9 = load i32, i32* %sum, align 4, !dbg !51
  %call4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 %9), !dbg !52
  ret i32 0, !dbg !53
}

declare i32 @printf(i8*, ...)

attributes #0 = { nounwind readnone }

!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8, !9}
!llvm.ident = !{!10}

!0 = !DIGlobalVariableExpression(var: !1)
!1 = !DIGlobalVariable(name: "N", scope: !2, file: !3, line: 3, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "cov-zero-samples.cc", directory: ".")
!4 = !{}
!5 = !{!0}
!6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
!7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{!"clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)"}
!11 = distinct !DISubprogram(name: "never_called", linkageName: "_Z12never_calledi", scope: !3, file: !3, line: 5, type: !12, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !4)
!12 = !DISubroutineType(types: !13)
!13 = !{!14, !14}
!14 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!15 = !DILocation(line: 5, column: 27, scope: !16)
!16 = !DILexicalBlockFile(scope: !11, file: !3, discriminator: 6)
!17 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !18, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !4)
!18 = !DISubroutineType(types: !19)
!19 = !{!14}
!20 = !DILocalVariable(name: "sum", scope: !17, file: !3, line: 8, type: !14)
!21 = !DIExpression()
!22 = !DILocation(line: 8, column: 7, scope: !17)
!23 = !DILocalVariable(name: "i", scope: !24, file: !3, line: 9, type: !7)
!24 = distinct !DILexicalBlock(scope: !17, file: !3, line: 9, column: 3)
!25 = !DILocation(line: 9, column: 18, scope: !24)
!26 = !DILocation(line: 9, column: 8, scope: !24)
!27 = !DILocation(line: 9, column: 25, scope: !28)
!28 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 2)
!29 = distinct !DILexicalBlock(scope: !24, file: !3, line: 9, column: 3)
!30 = !DILocation(line: 9, column: 29, scope: !28)
!31 = !DILocation(line: 9, column: 27, scope: !28)
!32 = !DILocation(line: 9, column: 3, scope: !28)
!33 = !DILocation(line: 10, column: 9, scope: !34)
!34 = distinct !DILexicalBlock(scope: !35, file: !3, line: 10, column: 9)
!35 = distinct !DILexicalBlock(scope: !29, file: !3, line: 9, column: 37)
!36 = !DILocation(line: 10, column: 13, scope: !34)
!37 = !DILocation(line: 10, column: 11, scope: !34)
!38 = !DILocation(line: 10, column: 9, scope: !35)
!39 = !DILocation(line: 10, column: 36, scope: !40)
!40 = !DILexicalBlockFile(scope: !34, file: !3, discriminator: 2)
!41 = !DILocation(line: 10, column: 23, scope: !40)
!42 = !DILocation(line: 10, column: 20, scope: !40)
!43 = !DILocation(line: 10, column: 16, scope: !40)
!44 = !DILocation(line: 11, column: 12, scope: !35)
!45 = !DILocation(line: 11, column: 14, scope: !35)
!46 = !DILocation(line: 11, column: 9, scope: !35)
!47 = !DILocation(line: 12, column: 3, scope: !35)
!48 = !DILocation(line: 9, column: 33, scope: !49)
!49 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 4)
!50 = !DILocation(line: 9, column: 3, scope: !49)
!51 = !DILocation(line: 13, column: 25, scope: !17)
!52 = !DILocation(line: 13, column: 3, scope: !17)
!53 = !DILocation(line: 14, column: 3, scope: !17)