xref: /llvm-project/llvm/test/Transforms/SampleProfile/entry_counts_missing_dbginfo.ll (revision 0271ae65a66367d802fa6866599d11e35f68450f) 
1; RUN: opt -S %s -passes=sample-profile -sample-profile-file=%S/Inputs/entry_counts_cold.prof -profile-sample-accurate | FileCheck %s
2; ModuleID = 'temp.bc'
3; This is a test similar to entry_counts_cold.ll. The key differences are:
4; - we want profile-sample-accurate. Normally, that would trigger resetting function entry counts to 0, and then update
5; them based on the sample profile (SampleProfile::runOnFunction).
6; - we don't have debug info for the function. This means we can't match sample counts in the profile to locations in this function.
7; When we attempt to update its profile info (at the end of SampleProfile::runOnModule - llvm::updateProfileCallee), we'll call
8; updateProfWeight with a 0 priorEntryCount, which will result in a division by 0.
9;
10; We're using @bar and the call to @baz.
11;
12; Currently, the test just ensures opt doesn't ICE
13source_filename = "temp.c"
14target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
15target triple = "x86_64-apple-macosx10.14.0"
16
17; Function Attrs: nounwind ssp uwtable
18; CHECK: define i32 @top({{.*}} !prof [[TOP:![0-9]+]]
19define i32 @top(ptr %p) #0 !dbg !8 {
20entry:
21  %p.addr = alloca ptr, align 8
22  store ptr %p, ptr %p.addr, align 8, !tbaa !15
23  call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !14, metadata !DIExpression()), !dbg !19
24  %0 = load ptr, ptr %p.addr, align 8, !dbg !20, !tbaa !15
25  %call = call i32 @foo(ptr %0), !dbg !21
26; foo is inlined
27; CHECK-NOT: call i32 @foo
28; CHECK: call i32 @bar
29  %1 = load ptr, ptr %p.addr, align 8, !dbg !22, !tbaa !15
30  %2 = load i32, ptr %1, align 4, !dbg !24, !tbaa !25
31  %tobool = icmp ne i32 %2, 0, !dbg !24
32  br i1 %tobool, label %if.then, label %if.end, !dbg !27
33
34if.then:                                          ; preds = %entry
35  %3 = load ptr, ptr %p.addr, align 8, !dbg !28, !tbaa !15
36; bar is not inlined
37; CHECK: call i32 @bar
38  %call1 = call i32 @bar(ptr %3), !dbg !29
39  br label %if.end, !dbg !29
40
41if.end:                                           ; preds = %if.then, %entry
42  ret i32 0, !dbg !30
43}
44
45; Function Attrs: nounwind readnone speculatable
46declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
47
48; Function Attrs: nounwind ssp uwtable
49; CHECK: define i32 @foo({{.*}} !prof [[FOO:![0-9]+]]
50define i32 @foo(ptr %p) #0 !dbg !31 {
51entry:
52  %p.addr = alloca ptr, align 8
53  %a = alloca i32, align 4
54  store ptr %p, ptr %p.addr, align 8, !tbaa !15
55  call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !33, metadata !DIExpression()), !dbg !35
56  call void @llvm.lifetime.start.p0(i64 4, ptr %a) #4, !dbg !36
57  call void @llvm.dbg.declare(metadata ptr %a, metadata !34, metadata !DIExpression()), !dbg !37
58  %0 = load ptr, ptr %p.addr, align 8, !dbg !38, !tbaa !15
59  %arrayidx = getelementptr inbounds i32, ptr %0, i64 3, !dbg !38
60  %1 = load i32, ptr %arrayidx, align 4, !dbg !38, !tbaa !25
61  %2 = load ptr, ptr %p.addr, align 8, !dbg !39, !tbaa !15
62  %arrayidx1 = getelementptr inbounds i32, ptr %2, i64 2, !dbg !39
63  %3 = load i32, ptr %arrayidx1, align 4, !dbg !40, !tbaa !25
64  %add = add nsw i32 %3, %1, !dbg !40
65  store i32 %add, ptr %arrayidx1, align 4, !dbg !40, !tbaa !25
66  %4 = load ptr, ptr %p.addr, align 8, !dbg !41, !tbaa !15
67  %call = call i32 @bar(ptr %4), !dbg !42
68  store i32 %call, ptr %a, align 4, !dbg !43, !tbaa !25
69  %5 = load i32, ptr %a, align 4, !dbg !44, !tbaa !25
70  %add2 = add nsw i32 %5, 1, !dbg !45
71  call void @llvm.lifetime.end.p0(i64 4, ptr %a) #4, !dbg !46
72  ret i32 %add2, !dbg !47
73}
74
75; Function Attrs: nounwind ssp uwtable
76; CHECK: define i32 @bar(ptr %p) #0 !prof [[BAR:![0-9]+]] {
77define i32 @bar(ptr %p) #0 {
78entry:
79  %p.addr = alloca ptr, align 8
80  store ptr %p, ptr %p.addr, align 8, !tbaa !15
81  call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !50, metadata !DIExpression()), !dbg !51
82  ; CHECK: call void (...) @baz(), !dbg !{{[0-9]+}}
83  call void (...) @baz(), !dbg !52, !prof !100
84  %0 = load ptr, ptr %p.addr, align 8, !dbg !53, !tbaa !15
85  %arrayidx = getelementptr inbounds i32, ptr %0, i64 2, !dbg !53
86  %1 = load i32, ptr %arrayidx, align 4, !dbg !53, !tbaa !25
87  %2 = load ptr, ptr %p.addr, align 8, !dbg !54, !tbaa !15
88  %arrayidx1 = getelementptr inbounds i32, ptr %2, i64 1, !dbg !54
89  %3 = load i32, ptr %arrayidx1, align 4, !dbg !55, !tbaa !25
90  %add = add nsw i32 %3, %1, !dbg !55
91  store i32 %add, ptr %arrayidx1, align 4, !dbg !55, !tbaa !25
92  %4 = load ptr, ptr %p.addr, align 8, !dbg !56, !tbaa !15
93  %arrayidx2 = getelementptr inbounds i32, ptr %4, i64 3, !dbg !56
94  %5 = load i32, ptr %arrayidx2, align 4, !dbg !56, !tbaa !25
95  ret i32 %5, !dbg !57
96}
97
98; Function Attrs: argmemonly nounwind
99declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2
100
101; Function Attrs: argmemonly nounwind
102declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2
103
104declare void @baz(...) #3
105
106attributes #0 = { nounwind ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "frame-pointer"="all" "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"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sahf,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
107attributes #1 = { nounwind readnone speculatable }
108attributes #2 = { argmemonly nounwind }
109attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sahf,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
110attributes #4 = { nounwind }
111
112!llvm.dbg.cu = !{!0}
113!llvm.module.flags = !{!3, !4, !5, !6}
114!llvm.ident = !{!7}
115
116; CHECK: [[TOP]] = !{!"function_entry_count", i64 101}
117; CHECK: [[FOO]] = !{!"function_entry_count", i64 151}
118
119!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: GNU)
120!1 = !DIFile(filename: "temp.c", directory: "llvm/test/Transforms/SampleProfile")
121!2 = !{}
122!3 = !{i32 2, !"Dwarf Version", i32 4}
123!4 = !{i32 2, !"Debug Info Version", i32 3}
124!5 = !{i32 1, !"wchar_size", i32 4}
125!6 = !{i32 7, !"PIC Level", i32 2}
126!7 = !{!"clang version 8.0.0"}
127!8 = distinct !DISubprogram(name: "top", scope: !1, file: !1, line: 5, type: !9, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
128!9 = !DISubroutineType(types: !10)
129!10 = !{!11, !12}
130!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
131!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
132!13 = !{!14}
133!14 = !DILocalVariable(name: "p", arg: 1, scope: !8, file: !1, line: 5, type: !12)
134!15 = !{!16, !16, i64 0}
135!16 = !{!"any pointer", !17, i64 0}
136!17 = !{!"omnipotent char", !18, i64 0}
137!18 = !{!"Simple C/C++ TBAA"}
138!19 = !DILocation(line: 5, column: 14, scope: !8)
139!20 = !DILocation(line: 6, column: 7, scope: !8)
140!21 = !DILocation(line: 6, column: 3, scope: !8)
141!22 = !DILocation(line: 7, column: 8, scope: !23)
142!23 = distinct !DILexicalBlock(scope: !8, file: !1, line: 7, column: 7)
143!24 = !DILocation(line: 7, column: 7, scope: !23)
144!25 = !{!26, !26, i64 0}
145!26 = !{!"int", !17, i64 0}
146!27 = !DILocation(line: 7, column: 7, scope: !8)
147!28 = !DILocation(line: 8, column: 9, scope: !23)
148!29 = !DILocation(line: 8, column: 5, scope: !23)
149!30 = !DILocation(line: 9, column: 3, scope: !8)
150!31 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 12, type: !9, scopeLine: 12, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !32)
151!32 = !{!33, !34}
152!33 = !DILocalVariable(name: "p", arg: 1, scope: !31, file: !1, line: 12, type: !12)
153!34 = !DILocalVariable(name: "a", scope: !31, file: !1, line: 13, type: !11)
154!35 = !DILocation(line: 12, column: 14, scope: !31)
155!36 = !DILocation(line: 13, column: 3, scope: !31)
156!37 = !DILocation(line: 13, column: 7, scope: !31)
157!38 = !DILocation(line: 14, column: 11, scope: !31)
158!39 = !DILocation(line: 14, column: 3, scope: !31)
159!40 = !DILocation(line: 14, column: 8, scope: !31)
160!41 = !DILocation(line: 15, column: 11, scope: !31)
161!42 = !DILocation(line: 15, column: 7, scope: !31)
162!43 = !DILocation(line: 15, column: 5, scope: !31)
163!44 = !DILocation(line: 16, column: 10, scope: !31)
164!45 = !DILocation(line: 16, column: 11, scope: !31)
165!46 = !DILocation(line: 17, column: 1, scope: !31)
166!47 = !DILocation(line: 16, column: 3, scope: !31)
167!48 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 19, type: !9, scopeLine: 19, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !49)
168!49 = !{!50}
169!50 = !DILocalVariable(name: "p", arg: 1, scope: !48, file: !1, line: 19, type: !12)
170!51 = !DILocation(line: 19, column: 15, scope: !48)
171!52 = !DILocation(line: 20, column: 3, scope: !48)
172!53 = !DILocation(line: 21, column: 11, scope: !48)
173!54 = !DILocation(line: 21, column: 3, scope: !48)
174!55 = !DILocation(line: 21, column: 8, scope: !48)
175!56 = !DILocation(line: 22, column: 10, scope: !48)
176!57 = !DILocation(line: 22, column: 3, scope: !48)
177!100 = !{!"branch_weights", i32 5}
178