1; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/inline-coverage.prof -sample-profile-check-coverage=100 -pass-remarks=sample-profile 2>&1 | FileCheck %s
2;
3; Original code:
4;
5;     1    #include <stdlib.h>
6;     2
7;     3    long long int foo(long i) {
8;     4      return rand() * i;
9;     5    }
10;     6
11;     7    int main() {
12;     8      long long int sum = 0;
13;     9      for (int i = 0; i < 200000 * 3000; i++)
14;    10        sum += foo(i);
15;    11      return sum > 0 ? 0 : 1;
16;    12    }
17;
18; CHECK: remark: coverage.cc:10:12: inlined hot callee '_Z3fool' with 172746 samples into 'main'
19; CHECK: remark: coverage.cc:9:19: Applied 23478 samples from profile
20; CHECK: remark: coverage.cc:10:16: Applied 23478 samples from profile
21; CHECK: remark: coverage.cc:4:10: Applied 31878 samples from profile
22; CHECK: remark: coverage.cc:11:10: Applied 0 samples from profile
23; CHECK: remark: coverage.cc:10:16: most popular destination for conditional branches at coverage.cc:9:3
24;
25; There is one sample record with 0 samples at offset 4 in main() that we never
26; use:
27; CHECK: warning: coverage.cc:7: 4 of 5 available profile records (80%) were applied
28
29define i64 @_Z3fool(i64 %i) {
30entry:
31  %i.addr = alloca i64, align 8
32  store i64 %i, i64* %i.addr, align 8
33  call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !16, metadata !17), !dbg !18
34  %call = call i32 @rand(), !dbg !19
35  %conv = sext i32 %call to i64, !dbg !19
36  %0 = load i64, i64* %i.addr, align 8, !dbg !20
37  %mul = mul nsw i64 %conv, %0, !dbg !21
38  ret i64 %mul, !dbg !22
39}
40
41declare void @llvm.dbg.declare(metadata, metadata, metadata)
42
43declare i32 @rand()
44
45define i32 @main() {
46entry:
47  %retval = alloca i32, align 4
48  %sum = alloca i64, align 8
49  %i = alloca i32, align 4
50  store i32 0, i32* %retval, align 4
51  call void @llvm.dbg.declare(metadata i64* %sum, metadata !23, metadata !17), !dbg !24
52  store i64 0, i64* %sum, align 8, !dbg !24
53  call void @llvm.dbg.declare(metadata i32* %i, metadata !25, metadata !17), !dbg !27
54  store i32 0, i32* %i, align 4, !dbg !27
55  br label %for.cond, !dbg !28
56
57for.cond:                                         ; preds = %for.inc, %entry
58  %0 = load i32, i32* %i, align 4, !dbg !29
59  %cmp = icmp slt i32 %0, 600000000, !dbg !32
60  br i1 %cmp, label %for.body, label %for.end, !dbg !33
61
62for.body:                                         ; preds = %for.cond
63  %1 = load i32, i32* %i, align 4, !dbg !34
64  %conv = sext i32 %1 to i64, !dbg !34
65  %call = call i64 @_Z3fool(i64 %conv), !dbg !35
66  %2 = load i64, i64* %sum, align 8, !dbg !36
67  %add = add nsw i64 %2, %call, !dbg !36
68  store i64 %add, i64* %sum, align 8, !dbg !36
69  br label %for.inc, !dbg !37
70
71for.inc:                                          ; preds = %for.body
72  %3 = load i32, i32* %i, align 4, !dbg !38
73  %inc = add nsw i32 %3, 1, !dbg !38
74  store i32 %inc, i32* %i, align 4, !dbg !38
75  br label %for.cond, !dbg !39
76
77for.end:                                          ; preds = %for.cond
78  %4 = load i64, i64* %sum, align 8, !dbg !40
79  %cmp1 = icmp sgt i64 %4, 0, !dbg !41
80  %cond = select i1 %cmp1, i32 0, i32 1, !dbg !40
81  ret i32 %cond, !dbg !42
82}
83
84!llvm.dbg.cu = !{!0}
85!llvm.module.flags = !{!13, !14}
86!llvm.ident = !{!15}
87
88!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 251738) (llvm/trunk 251737)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)
89!1 = !DIFile(filename: "coverage.cc", directory: ".")
90!2 = !{}
91!3 = !{!4, !9}
92!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fool", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, function: i64 (i64)* @_Z3fool, variables: !2)
93!5 = !DISubroutineType(types: !6)
94!6 = !{!7, !8}
95!7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
96!8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
97!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, function: i32 ()* @main, variables: !2)
98!10 = !DISubroutineType(types: !11)
99!11 = !{!12}
100!12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
101!13 = !{i32 2, !"Dwarf Version", i32 4}
102!14 = !{i32 2, !"Debug Info Version", i32 3}
103!15 = !{!"clang version 3.8.0 (trunk 251738) (llvm/trunk 251737)"}
104!16 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 3, type: !8)
105!17 = !DIExpression()
106!18 = !DILocation(line: 3, column: 24, scope: !4)
107!19 = !DILocation(line: 4, column: 10, scope: !4)
108!20 = !DILocation(line: 4, column: 19, scope: !4)
109!21 = !DILocation(line: 4, column: 17, scope: !4)
110!22 = !DILocation(line: 4, column: 3, scope: !4)
111!23 = !DILocalVariable(name: "sum", scope: !9, file: !1, line: 8, type: !7)
112!24 = !DILocation(line: 8, column: 17, scope: !9)
113!25 = !DILocalVariable(name: "i", scope: !26, file: !1, line: 9, type: !12)
114!26 = distinct !DILexicalBlock(scope: !9, file: !1, line: 9, column: 3)
115!27 = !DILocation(line: 9, column: 12, scope: !26)
116!28 = !DILocation(line: 9, column: 8, scope: !26)
117!29 = !DILocation(line: 9, column: 19, scope: !30)
118!30 = !DILexicalBlockFile(scope: !31, file: !1, discriminator: 1)
119!31 = distinct !DILexicalBlock(scope: !26, file: !1, line: 9, column: 3)
120!32 = !DILocation(line: 9, column: 21, scope: !30)
121!33 = !DILocation(line: 9, column: 3, scope: !30)
122!34 = !DILocation(line: 10, column: 16, scope: !31)
123!35 = !DILocation(line: 10, column: 12, scope: !31)
124!36 = !DILocation(line: 10, column: 9, scope: !31)
125!37 = !DILocation(line: 10, column: 5, scope: !31)
126!38 = !DILocation(line: 9, column: 39, scope: !31)
127!39 = !DILocation(line: 9, column: 3, scope: !31)
128!40 = !DILocation(line: 11, column: 10, scope: !9)
129!41 = !DILocation(line: 11, column: 14, scope: !9)
130!42 = !DILocation(line: 11, column: 3, scope: !9)
131