xref: /llvm-project/llvm/test/Transforms/SampleProfile/profile-mismatch.ll (revision c98da372cb08cd3b3c513a6a86592b0f2892fb49) 
1; REQUIRES: x86_64-linux
2; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/profile-mismatch.prof -report-profile-staleness -persist-profile-staleness -S 2>%t -o %t.ll
3; RUN: FileCheck %s --input-file %t
4; RUN: FileCheck %s --input-file %t.ll -check-prefix=CHECK-MD
5; RUN: llc < %t.ll -filetype=obj -o %t.obj
6; RUN: llvm-objdump --section-headers %t.obj | FileCheck %s --check-prefix=CHECK-OBJ
7; RUN: llc < %t.ll -filetype=asm -o - | FileCheck %s --check-prefix=CHECK-ASM
8
9; CHECK: (1/3) of callsites' profile are invalid and (15/50) of samples are discarded due to callsite location mismatch.
10
11; CHECK-MD: ![[#]] = !{!"NumMismatchedCallsites", i64 1, !"NumRecoveredCallsites", i64 0, !"TotalProfiledCallsites", i64 3, !"MismatchedCallsiteSamples", i64 15, !"RecoveredCallsiteSamples", i64 0}
12
13; CHECK-OBJ: .llvm_stats
14
15; CHECK-ASM: .ascii	"NumMismatchedCallsites"
16; CHECK-ASM: .byte	4
17; CHECK-ASM: .ascii	"MQ=="
18; CHECK-ASM: .byte	21
19; CHECK-ASM: .ascii	"NumRecoveredCallsites"
20; CHECK-ASM: .byte	4
21; CHECK-ASM: .ascii	"MA=="
22; CHECK-ASM: .byte	22
23; CHECK-ASM: .ascii	"TotalProfiledCallsites"
24; CHECK-ASM: .byte	4
25; CHECK-ASM: .ascii	"Mw=="
26; CHECK-ASM: .byte	25
27; CHECK-ASM: .ascii	"MismatchedCallsiteSamples"
28; CHECK-ASM: .byte	4
29; CHECK-ASM: .ascii	"MTU="
30; CHECK-ASM: .byte	24
31; CHECK-ASM: .ascii	"RecoveredCallsiteSamples"
32; CHECK-ASM: .byte	4
33; CHECK-ASM: .ascii	"MA=="
34
35
36target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
37target triple = "x86_64-unknown-linux-gnu"
38
39@x = dso_local global i32 0, align 4, !dbg !0
40
41; Function Attrs: nounwind uwtable
42define dso_local i32 @foo(i32 noundef %x) #0 !dbg !12 {
43entry:
44  %y = alloca i32, align 4
45  call void @llvm.dbg.value(metadata i32 %x, metadata !16, metadata !DIExpression()), !dbg !18
46  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %y), !dbg !19
47  call void @llvm.dbg.declare(metadata ptr %y, metadata !17, metadata !DIExpression()), !dbg !20
48  %add = add nsw i32 %x, 1, !dbg !21
49  store volatile i32 %add, ptr %y, align 4, !dbg !20, !tbaa !22
50  %y.0. = load volatile i32, ptr %y, align 4, !dbg !26, !tbaa !22
51  %add1 = add nsw i32 %y.0., 1, !dbg !27
52  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %y), !dbg !28
53  ret i32 %add1, !dbg !29
54}
55
56; Function Attrs: mustprogress nocallback nofree nosync nounwind readnone speculatable willreturn
57declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
58
59; Function Attrs: argmemonly mustprogress nocallback nofree nosync nounwind willreturn
60declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2
61
62; Function Attrs: argmemonly mustprogress nocallback nofree nosync nounwind willreturn
63declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2
64
65; Function Attrs: noinline nounwind uwtable
66define dso_local i32 @bar(i32 noundef %x) #3 !dbg !30 {
67entry:
68  call void @llvm.dbg.value(metadata i32 %x, metadata !32, metadata !DIExpression()), !dbg !33
69  %add = add nsw i32 %x, 2, !dbg !34
70  ret i32 %add, !dbg !35
71}
72
73; Function Attrs: noinline nounwind uwtable
74define dso_local i32 @matched(i32 noundef %x) #3 !dbg !36 {
75entry:
76  call void @llvm.dbg.value(metadata i32 %x, metadata !38, metadata !DIExpression()), !dbg !39
77  %add = add nsw i32 %x, 3, !dbg !40
78  ret i32 %add, !dbg !41
79}
80
81; Function Attrs: nounwind uwtable
82define dso_local i32 @main() #0 !dbg !42 {
83entry:
84  call void @llvm.dbg.value(metadata i32 0, metadata !46, metadata !DIExpression()), !dbg !52
85  br label %for.cond, !dbg !53
86
87for.cond:                                         ; preds = %for.cond.cleanup3, %entry
88  %i.0 = phi i32 [ 0, %entry ], [ %inc8, %for.cond.cleanup3 ], !dbg !52
89  call void @llvm.dbg.value(metadata i32 %i.0, metadata !46, metadata !DIExpression()), !dbg !52
90  %cmp = icmp ult i32 %i.0, 1000, !dbg !54
91  br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !56
92
93for.cond.cleanup:                                 ; preds = %for.cond
94  ret i32 0, !dbg !58
95
96for.body:                                         ; preds = %for.cond
97  call void @llvm.dbg.value(metadata i32 0, metadata !48, metadata !DIExpression()), !dbg !59
98  br label %for.cond1, !dbg !60
99
100for.cond1:                                        ; preds = %for.body4, %for.body
101  %a.0 = phi i32 [ 0, %for.body ], [ %inc, %for.body4 ], !dbg !59
102  call void @llvm.dbg.value(metadata i32 %a.0, metadata !48, metadata !DIExpression()), !dbg !59
103  %cmp2 = icmp ult i32 %a.0, 10000, !dbg !61
104  br i1 %cmp2, label %for.body4, label %for.cond.cleanup3, !dbg !64
105
106for.cond.cleanup3:                                ; preds = %for.cond1
107  %inc8 = add nuw nsw i32 %i.0, 1, !dbg !66
108  call void @llvm.dbg.value(metadata i32 %inc8, metadata !46, metadata !DIExpression()), !dbg !52
109  br label %for.cond, !dbg !68, !llvm.loop !69
110
111for.body4:                                        ; preds = %for.cond1
112  %0 = load volatile i32, ptr @x, align 4, !dbg !73, !tbaa !22
113  %call = call i32 @matched(i32 noundef %0), !dbg !75
114  store volatile i32 %call, ptr @x, align 4, !dbg !76, !tbaa !22
115  %1 = load volatile i32, ptr @x, align 4, !dbg !77, !tbaa !22
116  %call5 = call i32 @foo(i32 noundef %1), !dbg !78
117  store volatile i32 %call5, ptr @x, align 4, !dbg !79, !tbaa !22
118  %2 = load volatile i32, ptr @x, align 4, !dbg !80, !tbaa !22
119  %call6 = call i32 @bar(i32 noundef %2), !dbg !81
120  store volatile i32 %call6, ptr @x, align 4, !dbg !82, !tbaa !22
121  %inc = add nuw nsw i32 %a.0, 1, !dbg !83
122  call void @llvm.dbg.value(metadata i32 %inc, metadata !48, metadata !DIExpression()), !dbg !59
123  br label %for.cond1, !dbg !85, !llvm.loop !86
124}
125
126; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
127declare void @llvm.dbg.value(metadata, metadata, metadata) #4
128
129attributes #0 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "use-sample-profile" }
130attributes #1 = { mustprogress nocallback nofree nosync nounwind readnone speculatable willreturn }
131attributes #2 = { argmemonly mustprogress nocallback nofree nosync nounwind willreturn }
132attributes #3 = { noinline nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "use-sample-profile" }
133attributes #4 = { nocallback nofree nosync nounwind readnone speculatable willreturn }
134
135!llvm.dbg.cu = !{!2}
136!llvm.module.flags = !{!7, !8, !9, !10}
137!llvm.ident = !{!11}
138
139!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
140!1 = distinct !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !5, isLocal: false, isDefinition: true)
141!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None)
142!3 = !DIFile(filename: "test.c", directory: "test")
143!4 = !{!0}
144!5 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
145!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
146!7 = !{i32 7, !"Dwarf Version", i32 5}
147!8 = !{i32 2, !"Debug Info Version", i32 3}
148!9 = !{i32 1, !"wchar_size", i32 4}
149!10 = !{i32 7, !"uwtable", i32 2}
150!11 = !{!""}
151!12 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 2, type: !13, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
152!13 = !DISubroutineType(types: !14)
153!14 = !{!6, !6}
154!15 = !{!16, !17}
155!16 = !DILocalVariable(name: "x", arg: 1, scope: !12, file: !3, line: 2, type: !6)
156!17 = !DILocalVariable(name: "y", scope: !12, file: !3, line: 3, type: !5)
157!18 = !DILocation(line: 0, scope: !12)
158!19 = !DILocation(line: 3, column: 3, scope: !12)
159!20 = !DILocation(line: 3, column: 16, scope: !12)
160!21 = !DILocation(line: 3, column: 22, scope: !12)
161!22 = !{!23, !23, i64 0}
162!23 = !{!"int", !24, i64 0}
163!24 = !{!"omnipotent char", !25, i64 0}
164!25 = !{!"Simple C/C++ TBAA"}
165!26 = !DILocation(line: 4, column: 10, scope: !12)
166!27 = !DILocation(line: 4, column: 12, scope: !12)
167!28 = !DILocation(line: 5, column: 1, scope: !12)
168!29 = !DILocation(line: 4, column: 3, scope: !12)
169!30 = distinct !DISubprogram(name: "bar", scope: !3, file: !3, line: 7, type: !13, scopeLine: 7, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !31)
170!31 = !{!32}
171!32 = !DILocalVariable(name: "x", arg: 1, scope: !30, file: !3, line: 7, type: !6)
172!33 = !DILocation(line: 0, scope: !30)
173!34 = !DILocation(line: 8, column: 12, scope: !30)
174!35 = !DILocation(line: 8, column: 3, scope: !30)
175!36 = distinct !DISubprogram(name: "matched", scope: !3, file: !3, line: 11, type: !13, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !37)
176!37 = !{!38}
177!38 = !DILocalVariable(name: "x", arg: 1, scope: !36, file: !3, line: 11, type: !6)
178!39 = !DILocation(line: 0, scope: !36)
179!40 = !DILocation(line: 12, column: 12, scope: !36)
180!41 = !DILocation(line: 12, column: 3, scope: !36)
181!42 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 15, type: !43, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !45)
182!43 = !DISubroutineType(types: !44)
183!44 = !{!6}
184!45 = !{!46, !48}
185!46 = !DILocalVariable(name: "i", scope: !47, file: !3, line: 16, type: !6)
186!47 = distinct !DILexicalBlock(scope: !42, file: !3, line: 16, column: 3)
187!48 = !DILocalVariable(name: "a", scope: !49, file: !3, line: 17, type: !6)
188!49 = distinct !DILexicalBlock(scope: !50, file: !3, line: 17, column: 5)
189!50 = distinct !DILexicalBlock(scope: !51, file: !3, line: 16, column: 34)
190!51 = distinct !DILexicalBlock(scope: !47, file: !3, line: 16, column: 3)
191!52 = !DILocation(line: 0, scope: !47)
192!53 = !DILocation(line: 16, column: 8, scope: !47)
193!54 = !DILocation(line: 16, column: 21, scope: !55)
194!55 = !DILexicalBlockFile(scope: !51, file: !3, discriminator: 2)
195!56 = !DILocation(line: 16, column: 3, scope: !57)
196!57 = !DILexicalBlockFile(scope: !47, file: !3, discriminator: 2)
197!58 = !DILocation(line: 23, column: 1, scope: !42)
198!59 = !DILocation(line: 0, scope: !49)
199!60 = !DILocation(line: 17, column: 10, scope: !49)
200!61 = !DILocation(line: 17, column: 23, scope: !62)
201!62 = !DILexicalBlockFile(scope: !63, file: !3, discriminator: 2)
202!63 = distinct !DILexicalBlock(scope: !49, file: !3, line: 17, column: 5)
203!64 = !DILocation(line: 17, column: 5, scope: !65)
204!65 = !DILexicalBlockFile(scope: !49, file: !3, discriminator: 2)
205!66 = !DILocation(line: 16, column: 30, scope: !67)
206!67 = !DILexicalBlockFile(scope: !51, file: !3, discriminator: 4)
207!68 = !DILocation(line: 16, column: 3, scope: !67)
208!69 = distinct !{!69, !70, !71, !72}
209!70 = !DILocation(line: 16, column: 3, scope: !47)
210!71 = !DILocation(line: 22, column: 3, scope: !47)
211!72 = !{!"llvm.loop.mustprogress"}
212!73 = !DILocation(line: 18, column: 19, scope: !74)
213!74 = distinct !DILexicalBlock(scope: !63, file: !3, line: 17, column: 37)
214!75 = !DILocation(line: 18, column: 11, scope: !74)
215!76 = !DILocation(line: 18, column: 9, scope: !74)
216!77 = !DILocation(line: 19, column: 15, scope: !74)
217!78 = !DILocation(line: 19, column: 11, scope: !74)
218!79 = !DILocation(line: 19, column: 9, scope: !74)
219!80 = !DILocation(line: 20, column: 15, scope: !74)
220!81 = !DILocation(line: 20, column: 11, scope: !74)
221!82 = !DILocation(line: 20, column: 9, scope: !74)
222!83 = !DILocation(line: 17, column: 33, scope: !84)
223!84 = !DILexicalBlockFile(scope: !63, file: !3, discriminator: 4)
224!85 = !DILocation(line: 17, column: 5, scope: !84)
225!86 = distinct !{!86, !87, !88, !72}
226!87 = !DILocation(line: 17, column: 5, scope: !49)
227!88 = !DILocation(line: 21, column: 5, scope: !49)
228