1 ; RUN: opt < %s -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
3 ; CHECK: remark: cov-zero-samples.cc:9:25: Applied 404065 samples from profile (offset: 2.1)
4 ; CHECK: remark: cov-zero-samples.cc:10:9: Applied 443089 samples from profile (offset: 3)
5 ; CHECK: remark: cov-zero-samples.cc:10:36: Applied 0 samples from profile (offset: 3.1)
6 ; CHECK: remark: cov-zero-samples.cc:11:12: Applied 404066 samples from profile (offset: 4)
7 ; CHECK: remark: cov-zero-samples.cc:13:25: Applied 0 samples from profile (offset: 6)
8 ; CHECK: remark: cov-zero-samples.cc:14:3: Applied 0 samples from profile (offset: 7)
9 ; CHECK: remark: cov-zero-samples.cc:10:9: most popular destination for conditional branches at cov-zero-samples.cc:9:3
10 ; CHECK: remark: cov-zero-samples.cc:11:12: most popular destination for conditional branches at cov-zero-samples.cc:10:9
12 ; Coverage for this profile should be 100%
13 ; CHECK-NOT: warning: cov-zero-samples.cc:1:
15 @N = global i64 8000000000, align 8
16 @.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1
18 ; Function Attrs: nounwind uwtable
19 define i32 @_Z12never_calledi(i32 %i) !dbg !4 {
24 ; Function Attrs: nounwind readnone
25 declare void @llvm.dbg.declare(metadata, metadata, metadata)
27 ; Function Attrs: norecurse uwtable
28 define i32 @main() !dbg !8 {
30 %retval = alloca i32, align 4
31 %sum = alloca i32, align 4
32 %i = alloca i64, align 8
33 store i32 0, i32* %retval, align 4
34 call void @llvm.dbg.declare(metadata i32* %sum, metadata !33, metadata !19), !dbg !34
35 store i32 0, i32* %sum, align 4, !dbg !34
36 call void @llvm.dbg.declare(metadata i64* %i, metadata !35, metadata !19), !dbg !37
37 store i64 0, i64* %i, align 8, !dbg !37
38 br label %for.cond, !dbg !38
40 for.cond: ; preds = %for.inc, %entry
41 %0 = load i64, i64* %i, align 8, !dbg !39
42 %1 = load volatile i64, i64* @N, align 8, !dbg !42
43 %cmp = icmp slt i64 %0, %1, !dbg !43
44 br i1 %cmp, label %for.body, label %for.end, !dbg !44
46 for.body: ; preds = %for.cond
47 %2 = load i64, i64* %i, align 8, !dbg !45
48 %3 = load volatile i64, i64* @N, align 8, !dbg !48
49 %cmp1 = icmp sgt i64 %2, %3, !dbg !49
50 br i1 %cmp1, label %if.then, label %if.end, !dbg !50
52 if.then: ; preds = %for.body
53 %4 = load i64, i64* %i, align 8, !dbg !51
54 %conv = trunc i64 %4 to i32, !dbg !51
55 %call = call i32 @_Z12never_calledi(i32 %conv), !dbg !53
56 %5 = load i32, i32* %sum, align 4, !dbg !54
57 %add = add nsw i32 %5, %call, !dbg !54
58 store i32 %add, i32* %sum, align 4, !dbg !54
59 br label %if.end, !dbg !55
61 if.end: ; preds = %if.then, %for.body
62 %6 = load i64, i64* %i, align 8, !dbg !56
63 %div = sdiv i64 %6, 239, !dbg !57
64 %7 = load i32, i32* %sum, align 4, !dbg !58
65 %conv2 = sext i32 %7 to i64, !dbg !58
66 %mul = mul nsw i64 %conv2, %div, !dbg !58
67 %conv3 = trunc i64 %mul to i32, !dbg !58
68 store i32 %conv3, i32* %sum, align 4, !dbg !58
69 br label %for.inc, !dbg !59
71 for.inc: ; preds = %if.end
72 %8 = load i64, i64* %i, align 8, !dbg !60
73 %inc = add nsw i64 %8, 1, !dbg !60
74 store i64 %inc, i64* %i, align 8, !dbg !60
75 br label %for.cond, !dbg !62
77 for.end: ; preds = %for.cond
78 %9 = load i32, i32* %sum, align 4, !dbg !63
79 %call4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 %9), !dbg !64
83 declare i32 @printf(i8*, ...)
86 !llvm.module.flags = !{!15, !16}
89 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !11)
90 !1 = !DIFile(filename: "cov-zero-samples.cc", directory: ".")
93 !4 = distinct !DISubprogram(name: "never_called", linkageName: "_Z12never_calledi", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
94 !5 = !DISubroutineType(types: !6)
96 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
97 !8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !9, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
98 !9 = !DISubroutineType(types: !10)
101 !12 = !DIGlobalVariable(name: "N", scope: !0, file: !1, line: 3, type: !13, isLocal: false, isDefinition: true, variable: i64* @N)
102 !13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !14)
103 !14 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
104 !15 = !{i32 2, !"Dwarf Version", i32 4}
105 !16 = !{i32 2, !"Debug Info Version", i32 3}
106 !17 = !{!"clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)"}
107 !19 = !DIExpression()
108 !31 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
109 !32 = !DILocation(line: 5, column: 27, scope: !31)
110 !33 = !DILocalVariable(name: "sum", scope: !8, file: !1, line: 8, type: !7)
111 !34 = !DILocation(line: 8, column: 7, scope: !8)
112 !35 = !DILocalVariable(name: "i", scope: !36, file: !1, line: 9, type: !14)
113 !36 = distinct !DILexicalBlock(scope: !8, file: !1, line: 9, column: 3)
114 !37 = !DILocation(line: 9, column: 18, scope: !36)
115 !38 = !DILocation(line: 9, column: 8, scope: !36)
116 !39 = !DILocation(line: 9, column: 25, scope: !40)
117 !40 = !DILexicalBlockFile(scope: !41, file: !1, discriminator: 1)
118 !41 = distinct !DILexicalBlock(scope: !36, file: !1, line: 9, column: 3)
119 !42 = !DILocation(line: 9, column: 29, scope: !40)
120 !43 = !DILocation(line: 9, column: 27, scope: !40)
121 !44 = !DILocation(line: 9, column: 3, scope: !40)
122 !45 = !DILocation(line: 10, column: 9, scope: !46)
123 !46 = distinct !DILexicalBlock(scope: !47, file: !1, line: 10, column: 9)
124 !47 = distinct !DILexicalBlock(scope: !41, file: !1, line: 9, column: 37)
125 !48 = !DILocation(line: 10, column: 13, scope: !46)
126 !49 = !DILocation(line: 10, column: 11, scope: !46)
127 !50 = !DILocation(line: 10, column: 9, scope: !47)
128 !51 = !DILocation(line: 10, column: 36, scope: !52)
129 !52 = !DILexicalBlockFile(scope: !46, file: !1, discriminator: 1)
130 !53 = !DILocation(line: 10, column: 23, scope: !52)
131 !54 = !DILocation(line: 10, column: 20, scope: !52)
132 !55 = !DILocation(line: 10, column: 16, scope: !52)
133 !56 = !DILocation(line: 11, column: 12, scope: !47)
134 !57 = !DILocation(line: 11, column: 14, scope: !47)
135 !58 = !DILocation(line: 11, column: 9, scope: !47)
136 !59 = !DILocation(line: 12, column: 3, scope: !47)
137 !60 = !DILocation(line: 9, column: 33, scope: !61)
138 !61 = !DILexicalBlockFile(scope: !41, file: !1, discriminator: 2)
139 !62 = !DILocation(line: 9, column: 3, scope: !61)
140 !63 = !DILocation(line: 13, column: 25, scope: !8)
141 !64 = !DILocation(line: 13, column: 3, scope: !8)
142 !65 = !DILocation(line: 14, column: 3, scope: !8)