1 ; Make sure Import GUID list for ThinLTO properly set for CSSPGO
2 ; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -sample-profile-file=%S/Inputs/csspgo-import-list.prof --sample-profile-even-flow-distribution=0 -S | FileCheck %s
3 ; RUN: llvm-profdata merge --sample --extbinary %S/Inputs/csspgo-import-list.prof -o %t.prof
4 ; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -sample-profile-file=%t.prof --sample-profile-even-flow-distribution=0 -S | FileCheck %s
5 ; RUN: llvm-profdata show --sample -show-sec-info-only %t.prof | FileCheck %s --check-prefix=CHECK-ORDERED
6 ; RUN: llvm-profdata merge --sample --extbinary --use-md5 %S/Inputs/csspgo-import-list.prof -o %t.md5
7 ; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -sample-profile-file=%t.md5 --sample-profile-even-flow-distribution=0 -S | FileCheck %s
8 ; RUN: llvm-profdata show --sample -show-sec-info-only %t.md5 | FileCheck %s --check-prefix=CHECK-ORDERED
10 ;; Validate that with replay in effect, we import call sites even if they are below the threshold
11 ;; Baseline import decisions
12 ; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -sample-profile-file=%S/Inputs/csspgo-import-list.prof -profile-summary-hot-count=10000 --sample-profile-even-flow-distribution=0 -S | FileCheck %s --check-prefix=THRESHOLD
14 ; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -sample-profile-file=%S/Inputs/csspgo-import-list.prof -sample-profile-inline-replay=%S/Inputs/csspgo-import-list-replay.txt -sample-profile-inline-replay-scope=Module -profile-summary-hot-count=10000 --sample-profile-even-flow-distribution=0 -S | FileCheck %s --check-prefix=THRESHOLD-REPLAY
15 ;; With replay but no profile information for call to _Z5funcAi. We import _Z5funcAi because it's explicitly in the replay but don't go further to its callee (_Z3fibi) because we lack samples
16 ; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -sample-profile-file=%S/Inputs/csspgo-import-list-no-funca.prof -sample-profile-inline-replay=%S/Inputs/csspgo-import-list-replay.txt -sample-profile-inline-replay-scope=Module -profile-summary-hot-count=10000 --sample-profile-even-flow-distribution=0 -S | FileCheck %s --check-prefix=THRESHOLD-REPLAY-NO-FUNCA
18 declare i32 @_Z5funcBi(i32 %x)
19 declare i32 @_Z5funcAi(i32 %x)
21 define dso_local i32 @main() local_unnamed_addr #0 !dbg !18 {
23 br label %for.body, !dbg !25
25 for.cond.cleanup: ; preds = %for.body
26 ret i32 %add3, !dbg !27
28 for.body: ; preds = %for.body, %entry
29 %x.011 = phi i32 [ 300000, %entry ], [ %dec, %for.body ]
30 %r.010 = phi i32 [ 0, %entry ], [ %add3, %for.body ]
31 %call = tail call i32 @_Z5funcBi(i32 %x.011), !dbg !32
32 %add = add nuw nsw i32 %x.011, 1, !dbg !31
33 %call1 = tail call i32 @_Z5funcAi(i32 %add), !dbg !28
34 %add2 = add i32 %call, %r.010, !dbg !34
35 %add3 = add i32 %add2, %call1, !dbg !35
36 %dec = add nsw i32 %x.011, -1, !dbg !36
37 %cmp = icmp eq i32 %x.011, 0, !dbg !38
38 br i1 %cmp, label %for.cond.cleanup, label %for.body, !dbg !25
41 ; Make sure the ImportGUID stays with entry count metadata for ThinLTO-PreLink
42 ; For reference, the GUIDs of the functions are:
43 ; _Z5funcBi:446061515086924981
44 ; _Z8funcLeafi:7102633082150537521
45 ; _Z5funcBiLeaf2:3815895320998406042
46 ; _Z8funcLeafi3:-2862076748587597320
47 ; _Z5funcAi:6309742469962978389
48 ; _Z3fibi:-2016976694713209516
50 ; CHECK: distinct !DISubprogram(name: "main"
51 ; CHECK: !{!"function_entry_count", i64 1, i64 446061515086924981, i64 3815895320998406042, i64 7102633082150537521, i64 -2862076748587597320}
53 ; CHECK-ORDERED: FuncOffsetTableSection {{.*}} {ordered}
55 ; THRESHOLD: !{!"function_entry_count", i64 1}
56 ; THRESHOLD-REPLAY: !{!"function_entry_count", i64 1, i64 446061515086924981, i64 3815895320998406042, i64 6309742469962978389, i64 7102633082150537521, i64 -2862076748587597320, i64 -2016976694713209516}
57 ; THRESHOLD-REPLAY-NO-FUNCA: !{!"function_entry_count", i64 1, i64 446061515086924981, i64 3815895320998406042, i64 6309742469962978389, i64 7102633082150537521, i64 -2862076748587597320}
59 attributes #0 = { nofree noinline norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
62 !llvm.module.flags = !{!14, !15, !16}
65 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
66 !1 = distinct !DIGlobalVariable(name: "factor", scope: !2, file: !3, line: 21, type: !13, isLocal: false, isDefinition: true)
67 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !12, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None)
68 !3 = !DIFile(filename: "merged.cpp", directory: "/local/autofdo")
71 !6 = !DISubprogram(name: "funcA", linkageName: "_Z5funcAi", scope: !3, file: !3, line: 6, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
72 !7 = !DISubroutineType(types: !8)
74 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
75 !10 = !DISubprogram(name: "funcB", linkageName: "_Z5funcBi", scope: !3, file: !3, line: 7, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
76 !11 = !DISubprogram(name: "funcLeaf", linkageName: "_Z8funcLeafi", scope: !3, file: !3, line: 22, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
78 !13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !9)
79 !14 = !{i32 7, !"Dwarf Version", i32 4}
80 !15 = !{i32 2, !"Debug Info Version", i32 3}
81 !16 = !{i32 1, !"wchar_size", i32 4}
82 !17 = !{!"clang version 11.0.0"}
83 !18 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 11, type: !19, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !21)
84 !19 = !DISubroutineType(types: !20)
87 !22 = !DILocalVariable(name: "r", scope: !18, file: !3, line: 12, type: !9)
88 !23 = !DILocalVariable(name: "x", scope: !24, file: !3, line: 13, type: !9)
89 !24 = distinct !DILexicalBlock(scope: !18, file: !3, line: 13, column: 3)
90 !25 = !DILocation(line: 13, column: 3, scope: !26)
91 !26 = !DILexicalBlockFile(scope: !24, file: !3, discriminator: 2)
92 !27 = !DILocation(line: 17, column: 3, scope: !18)
93 !28 = !DILocation(line: 13, column: 10, scope: !29)
94 !29 = distinct !DILexicalBlock(scope: !30, file: !3, line: 13, column: 37)
95 !30 = distinct !DILexicalBlock(scope: !24, file: !3, line: 13, column: 3)
96 !31 = !DILocation(line: 14, column: 29, scope: !29)
97 !32 = !DILocation(line: 14, column: 21, scope: !33)
98 !33 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 2)
99 !34 = !DILocation(line: 14, column: 19, scope: !29)
100 !35 = !DILocation(line: 14, column: 7, scope: !29)
101 !36 = !DILocation(line: 13, column: 33, scope: !37)
102 !37 = !DILexicalBlockFile(scope: !30, file: !3, discriminator: 6)
103 !38 = !DILocation(line: 13, column: 26, scope: !39)
104 !39 = !DILexicalBlockFile(scope: !30, file: !3, discriminator: 2)