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1; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/remarks.prof -S -pass-remarks=sample-profile 2>&1 | FileCheck %s
2; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/remarks.prof -S -pass-remarks=sample-profile 2>&1 | FileCheck %s
3;
4; Original test case.
5;
6;     1    #include <stdlib.h>
7;     2
8;     3    long long foo() {
9;     4      long long int sum = 0;
10;     5      for (int i = 0; i < 500000000; i++)
11;     6        if (i < 1000)
12;     7          sum -= i;
13;     8        else
14;     9          sum += -i * rand();
15;    10      return sum;
16;    11    }
17;    12
18;    13    int main() { return foo() > 0; }
19
20; We are expecting foo() to be inlined in main() (almost all the cycles are
21; spent inside foo).
22; CHECK: remark: remarks.cc:13:21: inlined hot callee '_Z3foov' with 623868 samples into 'main'
23
24; The back edge for the loop is the hottest edge in the loop subgraph.
25; CHECK: remark: remarks.cc:6:9: most popular destination for conditional branches at remarks.cc:5:3
26
27; The predicate almost always chooses the 'else' branch.
28; CHECK: remark: remarks.cc:9:15: most popular destination for conditional branches at remarks.cc:6:9
29
30; Function Attrs: nounwind uwtable
31define i64 @_Z3foov() #0 !dbg !4 {
32entry:
33  %sum = alloca i64, align 8
34  %i = alloca i32, align 4
35  %0 = bitcast i64* %sum to i8*, !dbg !19
36  call void @llvm.lifetime.start(i64 8, i8* %0) #4, !dbg !19
37  call void @llvm.dbg.declare(metadata i64* %sum, metadata !9, metadata !20), !dbg !21
38  store i64 0, i64* %sum, align 8, !dbg !21, !tbaa !22
39  %1 = bitcast i32* %i to i8*, !dbg !26
40  call void @llvm.lifetime.start(i64 4, i8* %1) #4, !dbg !26
41  call void @llvm.dbg.declare(metadata i32* %i, metadata !10, metadata !20), !dbg !27
42  store i32 0, i32* %i, align 4, !dbg !27, !tbaa !28
43  br label %for.cond, !dbg !26
44
45for.cond:                                         ; preds = %for.inc, %entry
46  %2 = load i32, i32* %i, align 4, !dbg !30, !tbaa !28
47  %cmp = icmp slt i32 %2, 500000000, !dbg !34
48  br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !35
49
50for.cond.cleanup:                                 ; preds = %for.cond
51  %3 = bitcast i32* %i to i8*, !dbg !36
52  call void @llvm.lifetime.end(i64 4, i8* %3) #4, !dbg !36
53  br label %for.end
54
55for.body:                                         ; preds = %for.cond
56  %4 = load i32, i32* %i, align 4, !dbg !38, !tbaa !28
57  %cmp1 = icmp slt i32 %4, 1000, !dbg !40
58  br i1 %cmp1, label %if.then, label %if.else, !dbg !41
59
60if.then:                                          ; preds = %for.body
61  %5 = load i32, i32* %i, align 4, !dbg !42, !tbaa !28
62  %conv = sext i32 %5 to i64, !dbg !42
63  %6 = load i64, i64* %sum, align 8, !dbg !43, !tbaa !22
64  %sub = sub nsw i64 %6, %conv, !dbg !43
65  store i64 %sub, i64* %sum, align 8, !dbg !43, !tbaa !22
66  br label %if.end, !dbg !44
67
68if.else:                                          ; preds = %for.body
69  %7 = load i32, i32* %i, align 4, !dbg !45, !tbaa !28
70  %sub2 = sub nsw i32 0, %7, !dbg !46
71  %call = call i32 @rand() #4, !dbg !47
72  %mul = mul nsw i32 %sub2, %call, !dbg !48
73  %conv3 = sext i32 %mul to i64, !dbg !46
74  %8 = load i64, i64* %sum, align 8, !dbg !49, !tbaa !22
75  %add = add nsw i64 %8, %conv3, !dbg !49
76  store i64 %add, i64* %sum, align 8, !dbg !49, !tbaa !22
77  br label %if.end
78
79if.end:                                           ; preds = %if.else, %if.then
80  br label %for.inc, !dbg !50
81
82for.inc:                                          ; preds = %if.end
83  %9 = load i32, i32* %i, align 4, !dbg !51, !tbaa !28
84  %inc = add nsw i32 %9, 1, !dbg !51
85  store i32 %inc, i32* %i, align 4, !dbg !51, !tbaa !28
86  br label %for.cond, !dbg !52
87
88for.end:                                          ; preds = %for.cond.cleanup
89  %10 = load i64, i64* %sum, align 8, !dbg !53, !tbaa !22
90  %11 = bitcast i64* %sum to i8*, !dbg !54
91  call void @llvm.lifetime.end(i64 8, i8* %11) #4, !dbg !54
92  ret i64 %10, !dbg !55
93}
94
95; Function Attrs: nounwind argmemonly
96declare void @llvm.lifetime.start(i64, i8* nocapture) #1
97
98; Function Attrs: nounwind readnone
99declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
100
101; Function Attrs: nounwind
102declare i32 @rand() #3
103
104; Function Attrs: nounwind argmemonly
105declare void @llvm.lifetime.end(i64, i8* nocapture) #1
106
107; Function Attrs: nounwind uwtable
108define i32 @main() #0 !dbg !13 {
109entry:
110  %retval = alloca i32, align 4
111  store i32 0, i32* %retval, align 4
112  %call = call i64 @_Z3foov(), !dbg !56
113  %cmp = icmp sgt i64 %call, 0, !dbg !57
114  %conv = zext i1 %cmp to i32, !dbg !56
115  ret i32 %conv, !dbg !58
116}
117
118attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
119attributes #1 = { nounwind argmemonly }
120attributes #2 = { nounwind readnone }
121attributes #3 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
122attributes #4 = { nounwind }
123
124!llvm.dbg.cu = !{!0}
125!llvm.module.flags = !{!16, !17}
126!llvm.ident = !{!18}
127
128!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 251041) (llvm/trunk 251053)", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2)
129!1 = !DIFile(filename: "remarks.cc", directory: ".")
130!2 = !{}
131!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8)
132!5 = !DISubroutineType(types: !6)
133!6 = !{!7}
134!7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
135!8 = !{!9, !10}
136!9 = !DILocalVariable(name: "sum", scope: !4, file: !1, line: 4, type: !7)
137!10 = !DILocalVariable(name: "i", scope: !11, file: !1, line: 5, type: !12)
138!11 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5, column: 3)
139!12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
140!13 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 13, type: !14, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
141!14 = !DISubroutineType(types: !15)
142!15 = !{!12}
143!16 = !{i32 2, !"Dwarf Version", i32 4}
144!17 = !{i32 2, !"Debug Info Version", i32 3}
145!18 = !{!"clang version 3.8.0 (trunk 251041) (llvm/trunk 251053)"}
146!19 = !DILocation(line: 4, column: 3, scope: !4)
147!20 = !DIExpression()
148!21 = !DILocation(line: 4, column: 17, scope: !4)
149!22 = !{!23, !23, i64 0}
150!23 = !{!"long long", !24, i64 0}
151!24 = !{!"omnipotent char", !25, i64 0}
152!25 = !{!"Simple C/C++ TBAA"}
153!26 = !DILocation(line: 5, column: 8, scope: !11)
154!27 = !DILocation(line: 5, column: 12, scope: !11)
155!28 = !{!29, !29, i64 0}
156!29 = !{!"int", !24, i64 0}
157!30 = !DILocation(line: 5, column: 19, scope: !31)
158!31 = !DILexicalBlockFile(scope: !32, file: !1, discriminator: 3)
159!32 = !DILexicalBlockFile(scope: !33, file: !1, discriminator: 1)
160!33 = distinct !DILexicalBlock(scope: !11, file: !1, line: 5, column: 3)
161!34 = !DILocation(line: 5, column: 21, scope: !33)
162!35 = !DILocation(line: 5, column: 3, scope: !11)
163!36 = !DILocation(line: 5, column: 3, scope: !37)
164!37 = !DILexicalBlockFile(scope: !33, file: !1, discriminator: 2)
165!38 = !DILocation(line: 6, column: 9, scope: !39)
166!39 = distinct !DILexicalBlock(scope: !33, file: !1, line: 6, column: 9)
167!40 = !DILocation(line: 6, column: 11, scope: !39)
168!41 = !DILocation(line: 6, column: 9, scope: !33)
169!42 = !DILocation(line: 7, column: 14, scope: !39)
170!43 = !DILocation(line: 7, column: 11, scope: !39)
171!44 = !DILocation(line: 7, column: 7, scope: !39)
172!45 = !DILocation(line: 9, column: 15, scope: !39)
173!46 = !DILocation(line: 9, column: 14, scope: !39)
174!47 = !DILocation(line: 9, column: 19, scope: !39)
175!48 = !DILocation(line: 9, column: 17, scope: !39)
176!49 = !DILocation(line: 9, column: 11, scope: !39)
177!50 = !DILocation(line: 6, column: 13, scope: !39)
178!51 = !DILocation(line: 5, column: 35, scope: !33)
179!52 = !DILocation(line: 5, column: 3, scope: !33)
180!53 = !DILocation(line: 10, column: 10, scope: !4)
181!54 = !DILocation(line: 11, column: 1, scope: !4)
182!55 = !DILocation(line: 10, column: 3, scope: !4)
183!56 = !DILocation(line: 13, column: 21, scope: !13)
184!57 = !DILocation(line: 13, column: 27, scope: !13)
185!58 = !DILocation(line: 13, column: 14, scope: !13)
186