xref: /llvm-project/llvm/test/Transforms/SampleProfile/profile-context-order.ll (revision eecb8c5f06149baf970fa0943e9fb9a6afe00207) 
1;; Test for different function processing orders affecting inlining in sample profile loader.
2
3;; There is an SCC _Z5funcAi -> _Z8funcLeafi -> _Z5funcAi in the program.
4;; With -use-profiled-call-graph=0, the top-down processing order of
5;; that SCC is (_Z8funcLeafi, _Z5funcAi), which is determinined based on
6;; the static call graph. With -use-profiled-call-graph=1, call edges
7;; from profile are considered, thus the order becomes (_Z5funcAi, _Z8funcLeafi)
8;; which leads to _Z8funcLeafi inlined into _Z5funcAi.
9; RUN: opt < %s -passes=sample-profile -use-profiled-call-graph=1 -sample-profile-file=%S/Inputs/profile-context-order.prof -S | FileCheck %s -check-prefix=INLINE
10; RUN: opt < %s -passes=sample-profile -use-profiled-call-graph=0 -sample-profile-file=%S/Inputs/profile-context-order.prof -S | FileCheck %s -check-prefix=NOINLINE
11
12;; There is an indirect call _Z5funcAi -> _Z3fibi in the program.
13;; With -use-profiled-call-graph=0, the processing order computed
14;; based on the static call graph is (_Z3fibi, _Z5funcAi). With
15;; -use-profiled-call-graph=1, the indirect call edge from profile is
16;; considered, thus the order becomes (_Z5funcAi, _Z3fibi) which leads to
17;; _Z3fibi inlined into _Z5funcAi.
18; RUN: opt < %s -passes=sample-profile -use-profiled-call-graph=1 -sample-profile-file=%S/Inputs/profile-context-order.prof -S | FileCheck %s -check-prefix=ICALL-INLINE
19
20;; When a cycle is formed by profiled edges between _Z5funcBi and _Z8funcLeafi,
21;; the function processing order matters. Without considering call edge weights
22;; _Z8funcLeafi can be processed before _Z5funcBi, thus leads to suboptimal
23;; inlining.
24; RUN: opt < %s -passes=sample-profile -use-profiled-call-graph=1 -sort-profiled-scc-member=0 -sample-profile-file=%S/Inputs/profile-context-order-scc.prof -S | FileCheck %s -check-prefix=NOINLINEB
25; RUN: opt < %s -passes=sample-profile -use-profiled-call-graph=1 -sort-profiled-scc-member=1 -sample-profile-file=%S/Inputs/profile-context-order-scc.prof -S | FileCheck %s -check-prefix=INLINEB
26
27
28@factor = dso_local global i32 3, align 4, !dbg !0
29@fp = dso_local global ptr null, align 8
30
31; INLINE: define dso_local i32 @_Z5funcAi
32; INLINE-NOT: call i32 @_Z8funcLeafi
33; NOINLINE: define dso_local i32 @_Z5funcAi
34; NOINLINE: call i32 @_Z8funcLeafi
35; ICALL-INLINE: define dso_local i32 @_Z5funcAi
36; ICALL-INLINE: call i32 @_Z3foo
37; INLINEB: define dso_local i32 @_Z5funcBi
38; INLINEB-NOT: call i32 @_Z8funcLeafi
39; NOINLINEB: define dso_local i32 @_Z5funcBi
40; NOINLINEB: call i32 @_Z8funcLeafi
41define dso_local i32 @_Z5funcAi(i32 %x) local_unnamed_addr #0 !dbg !40 {
42entry:
43  %add = add nsw i32 %x, 100000, !dbg !44
44  %0 = load ptr, ptr @fp, align 8
45  %call = call i32 %0(i32 8), !dbg !45
46  %call1 = tail call i32 @_Z8funcLeafi(i32 %add), !dbg !46
47  ret i32 %call, !dbg !46
48}
49
50define dso_local i32 @main() local_unnamed_addr #0 !dbg !18 {
51entry:
52  store ptr @_Z3fibi, ptr @fp, align 8, !dbg !25
53  br label %for.body, !dbg !25
54
55for.cond.cleanup:                                 ; preds = %for.body
56  ret i32 %add3, !dbg !27
57
58for.body:                                         ; preds = %for.body, %entry
59  %x.011 = phi i32 [ 300000, %entry ], [ %dec, %for.body ]
60  %r.010 = phi i32 [ 0, %entry ], [ %add3, %for.body ]
61  %call = tail call i32 @_Z5funcBi(i32 %x.011), !dbg !32
62  %add = add nuw nsw i32 %x.011, 1, !dbg !31
63  %call1 = tail call i32 @_Z5funcAi(i32 %add), !dbg !28
64  %add2 = add i32 %call, %r.010, !dbg !34
65  %add3 = add i32 %add2, %call1, !dbg !35
66  %dec = add nsw i32 %x.011, -1, !dbg !36
67  %cmp = icmp eq i32 %x.011, 0, !dbg !38
68  br i1 %cmp, label %for.cond.cleanup, label %for.body, !dbg !25
69}
70
71; INLINE: define dso_local i32 @_Z8funcLeafi
72; NOINLINE: define dso_local i32 @_Z8funcLeafi
73; ICALL-INLINE: define dso_local i32 @_Z8funcLeafi
74; ICALL-NOINLINE: define dso_local i32 @_Z8funcLeafi
75define dso_local i32 @_Z8funcLeafi(i32 %x) local_unnamed_addr #1 !dbg !54 {
76entry:
77  %cmp = icmp sgt i32 %x, 0, !dbg !57
78  br i1 %cmp, label %while.body, label %while.cond2.preheader, !dbg !59
79
80while.cond2.preheader:                            ; preds = %entry
81  %cmp313 = icmp slt i32 %x, 0, !dbg !60
82  br i1 %cmp313, label %while.body4, label %if.end, !dbg !63
83
84while.body:                                       ; preds = %while.body, %entry
85  %x.addr.016 = phi i32 [ %sub, %while.body ], [ %x, %entry ]
86  %tmp = load volatile i32, ptr @factor, align 4, !dbg !64
87  %call = tail call i32 @_Z5funcAi(i32 %tmp), !dbg !67
88  %sub = sub nsw i32 %x.addr.016, %call, !dbg !68
89  %cmp1 = icmp sgt i32 %sub, 0, !dbg !69
90  br i1 %cmp1, label %while.body, label %if.end, !dbg !71
91
92while.body4:                                      ; preds = %while.body4, %while.cond2.preheader
93  %x.addr.114 = phi i32 [ %add, %while.body4 ], [ %x, %while.cond2.preheader ]
94  %tmp1 = load volatile i32, ptr @factor, align 4, !dbg !72
95  %call5 = tail call i32 @_Z5funcBi(i32 %tmp1), !dbg !74
96  %add = add nsw i32 %call5, %x.addr.114, !dbg !75
97  %cmp3 = icmp slt i32 %add, 0, !dbg !60
98  br i1 %cmp3, label %while.body4, label %if.end, !dbg !63
99
100if.end:                                           ; preds = %while.body4, %while.body, %while.cond2.preheader
101  %x.addr.2 = phi i32 [ 0, %while.cond2.preheader ], [ %sub, %while.body ], [ %add, %while.body4 ]
102  ret i32 %x.addr.2, !dbg !76
103}
104
105define dso_local i32 @_Z5funcBi(i32 %x) local_unnamed_addr #0 !dbg !47 {
106entry:
107  %sub = add nsw i32 %x, -100000, !dbg !51
108  %call = tail call i32 @_Z8funcLeafi(i32 %sub), !dbg !52
109  ret i32 %call, !dbg !53
110}
111
112define dso_local i32 @_Z3fibi(i32 %x) local_unnamed_addr #1 !dbg !77 {
113entry:
114  %sub = add nsw i32 %x, -100000, !dbg !78
115  %call = tail call i32 @_Z3foo(i32 %sub), !dbg !78
116  ret i32 %sub, !dbg !78
117}
118
119declare i32 @_Z3foo(i32)
120
121attributes #0 = { nofree noinline 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" }
122attributes #1 = { nofree 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" }
123
124!llvm.dbg.cu = !{!2}
125!llvm.module.flags = !{!14, !15, !16}
126!llvm.ident = !{!17}
127
128!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
129!1 = distinct !DIGlobalVariable(name: "factor", scope: !2, file: !3, line: 21, type: !13, isLocal: false, isDefinition: true)
130!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)
131!3 = !DIFile(filename: "merged.cpp", directory: "/local/autofdo")
132!4 = !{}
133!5 = !{!6, !10, !11}
134!6 = !DISubprogram(name: "funcA", linkageName: "_Z5funcAi", scope: !3, file: !3, line: 6, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
135!7 = !DISubroutineType(types: !8)
136!8 = !{!9, !9}
137!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
138!10 = !DISubprogram(name: "funcB", linkageName: "_Z5funcBi", scope: !3, file: !3, line: 7, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
139!11 = !DISubprogram(name: "funcLeaf", linkageName: "_Z8funcLeafi", scope: !3, file: !3, line: 22, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
140!12 = !{!0}
141!13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !9)
142!14 = !{i32 7, !"Dwarf Version", i32 4}
143!15 = !{i32 2, !"Debug Info Version", i32 3}
144!16 = !{i32 1, !"wchar_size", i32 4}
145!17 = !{!"clang version 11.0.0"}
146!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)
147!19 = !DISubroutineType(types: !20)
148!20 = !{!9}
149!21 = !{!22, !23}
150!22 = !DILocalVariable(name: "r", scope: !18, file: !3, line: 12, type: !9)
151!23 = !DILocalVariable(name: "x", scope: !24, file: !3, line: 13, type: !9)
152!24 = distinct !DILexicalBlock(scope: !18, file: !3, line: 13, column: 3)
153!25 = !DILocation(line: 13, column: 3, scope: !26)
154!26 = !DILexicalBlockFile(scope: !24, file: !3, discriminator: 2)
155!27 = !DILocation(line: 17, column: 3, scope: !18)
156!28 = !DILocation(line: 14, column: 10, scope: !29)
157!29 = distinct !DILexicalBlock(scope: !30, file: !3, line: 13, column: 37)
158!30 = distinct !DILexicalBlock(scope: !24, file: !3, line: 13, column: 3)
159!31 = !DILocation(line: 14, column: 29, scope: !29)
160!32 = !DILocation(line: 14, column: 21, scope: !33)
161!33 = !DILexicalBlockFile(scope: !29, file: !3, discriminator: 2)
162!34 = !DILocation(line: 14, column: 19, scope: !29)
163!35 = !DILocation(line: 14, column: 7, scope: !29)
164!36 = !DILocation(line: 13, column: 33, scope: !37)
165!37 = !DILexicalBlockFile(scope: !30, file: !3, discriminator: 6)
166!38 = !DILocation(line: 13, column: 26, scope: !39)
167!39 = !DILexicalBlockFile(scope: !30, file: !3, discriminator: 2)
168!40 = distinct !DISubprogram(name: "funcA", linkageName: "_Z5funcAi", scope: !3, file: !3, line: 26, type: !7, scopeLine: 26, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
169!44 = !DILocation(line: 26, column: 22, scope: !40)
170!45 = !DILocation(line: 28, column: 11, scope: !40)
171!46 = !DILocation(line: 27, column: 3, scope: !40)
172!47 = distinct !DISubprogram(name: "funcB", linkageName: "_Z5funcBi", scope: !3, file: !3, line: 32, type: !7, scopeLine: 32, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
173!51 = !DILocation(line: 33, column: 22, scope: !47)
174!52 = !DILocation(line: 33, column: 11, scope: !47)
175!53 = !DILocation(line: 35, column: 3, scope: !47)
176!54 = distinct !DISubprogram(name: "funcLeaf", linkageName: "_Z8funcLeafi", scope: !3, file: !3, line: 48, type: !7, scopeLine: 48, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
177!57 = !DILocation(line: 49, column: 9, scope: !58)
178!58 = distinct !DILexicalBlock(scope: !54, file: !3, line: 49, column: 7)
179!59 = !DILocation(line: 49, column: 7, scope: !54)
180!60 = !DILocation(line: 58, column: 14, scope: !61)
181!61 = !DILexicalBlockFile(scope: !62, file: !3, discriminator: 2)
182!62 = distinct !DILexicalBlock(scope: !58, file: !3, line: 56, column: 8)
183!63 = !DILocation(line: 58, column: 5, scope: !61)
184!64 = !DILocation(line: 52, column: 16, scope: !65)
185!65 = distinct !DILexicalBlock(scope: !66, file: !3, line: 51, column: 19)
186!66 = distinct !DILexicalBlock(scope: !58, file: !3, line: 49, column: 14)
187!67 = !DILocation(line: 52, column: 12, scope: !65)
188!68 = !DILocation(line: 52, column: 9, scope: !65)
189!69 = !DILocation(line: 51, column: 14, scope: !70)
190!70 = !DILexicalBlockFile(scope: !66, file: !3, discriminator: 2)
191!71 = !DILocation(line: 51, column: 5, scope: !70)
192!72 = !DILocation(line: 59, column: 16, scope: !73)
193!73 = distinct !DILexicalBlock(scope: !62, file: !3, line: 58, column: 19)
194!74 = !DILocation(line: 59, column: 12, scope: !73)
195!75 = !DILocation(line: 59, column: 9, scope: !73)
196!76 = !DILocation(line: 63, column: 3, scope: !54)
197!77 = distinct !DISubprogram(name: "funcB", linkageName: "_Z3fibi", scope: !3, file: !3, line: 32, type: !7, scopeLine: 32, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
198!78 = !DILocation(line: 33, column: 22, scope: !77)
199