1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
; RUN: opt -S %s -passes=sample-profile -sample-profile-file=%S/Inputs/entry_counts_cold.prof -profile-sample-accurate | FileCheck %s
; ModuleID = 'temp.bc'
; This is a test similar to entry_counts_cold.ll. The key differences are:
; - we want profile-sample-accurate. Normally, that would trigger resetting function entry counts to 0, and then update
; them based on the sample profile (SampleProfile::runOnFunction).
; - 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.
; When we attempt to update its profile info (at the end of SampleProfile::runOnModule - llvm::updateProfileCallee), we'll call
; updateProfWeight with a 0 priorEntryCount, which will result in a division by 0.
;
; We're using @bar and the call to @baz.
;
; Currently, the test just ensures opt doesn't ICE
source_filename = "temp.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.14.0"
; Function Attrs: nounwind ssp uwtable
; CHECK: define i32 @top({{.*}} !prof [[TOP:![0-9]+]]
define i32 @top(ptr %p) #0 !dbg !8 {
entry:
%p.addr = alloca ptr, align 8
store ptr %p, ptr %p.addr, align 8, !tbaa !15
call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !14, metadata !DIExpression()), !dbg !19
%0 = load ptr, ptr %p.addr, align 8, !dbg !20, !tbaa !15
%call = call i32 @foo(ptr %0), !dbg !21
; foo is inlined
; CHECK-NOT: call i32 @foo
; CHECK: call i32 @bar
%1 = load ptr, ptr %p.addr, align 8, !dbg !22, !tbaa !15
%2 = load i32, ptr %1, align 4, !dbg !24, !tbaa !25
%tobool = icmp ne i32 %2, 0, !dbg !24
br i1 %tobool, label %if.then, label %if.end, !dbg !27
if.then: ; preds = %entry
%3 = load ptr, ptr %p.addr, align 8, !dbg !28, !tbaa !15
; bar is not inlined
; CHECK: call i32 @bar
%call1 = call i32 @bar(ptr %3), !dbg !29
br label %if.end, !dbg !29
if.end: ; preds = %if.then, %entry
ret i32 0, !dbg !30
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
; Function Attrs: nounwind ssp uwtable
; CHECK: define i32 @foo({{.*}} !prof [[FOO:![0-9]+]]
define i32 @foo(ptr %p) #0 !dbg !31 {
entry:
%p.addr = alloca ptr, align 8
%a = alloca i32, align 4
store ptr %p, ptr %p.addr, align 8, !tbaa !15
call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !33, metadata !DIExpression()), !dbg !35
call void @llvm.lifetime.start.p0(i64 4, ptr %a) #4, !dbg !36
call void @llvm.dbg.declare(metadata ptr %a, metadata !34, metadata !DIExpression()), !dbg !37
%0 = load ptr, ptr %p.addr, align 8, !dbg !38, !tbaa !15
%arrayidx = getelementptr inbounds i32, ptr %0, i64 3, !dbg !38
%1 = load i32, ptr %arrayidx, align 4, !dbg !38, !tbaa !25
%2 = load ptr, ptr %p.addr, align 8, !dbg !39, !tbaa !15
%arrayidx1 = getelementptr inbounds i32, ptr %2, i64 2, !dbg !39
%3 = load i32, ptr %arrayidx1, align 4, !dbg !40, !tbaa !25
%add = add nsw i32 %3, %1, !dbg !40
store i32 %add, ptr %arrayidx1, align 4, !dbg !40, !tbaa !25
%4 = load ptr, ptr %p.addr, align 8, !dbg !41, !tbaa !15
%call = call i32 @bar(ptr %4), !dbg !42
store i32 %call, ptr %a, align 4, !dbg !43, !tbaa !25
%5 = load i32, ptr %a, align 4, !dbg !44, !tbaa !25
%add2 = add nsw i32 %5, 1, !dbg !45
call void @llvm.lifetime.end.p0(i64 4, ptr %a) #4, !dbg !46
ret i32 %add2, !dbg !47
}
; Function Attrs: nounwind ssp uwtable
; CHECK: define i32 @bar(ptr %p) #0 !prof [[BAR:![0-9]+]] {
define i32 @bar(ptr %p) #0 {
entry:
%p.addr = alloca ptr, align 8
store ptr %p, ptr %p.addr, align 8, !tbaa !15
call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !50, metadata !DIExpression()), !dbg !51
; CHECK: call void (...) @baz(), !dbg !{{[0-9]+}}
call void (...) @baz(), !dbg !52, !prof !100
%0 = load ptr, ptr %p.addr, align 8, !dbg !53, !tbaa !15
%arrayidx = getelementptr inbounds i32, ptr %0, i64 2, !dbg !53
%1 = load i32, ptr %arrayidx, align 4, !dbg !53, !tbaa !25
%2 = load ptr, ptr %p.addr, align 8, !dbg !54, !tbaa !15
%arrayidx1 = getelementptr inbounds i32, ptr %2, i64 1, !dbg !54
%3 = load i32, ptr %arrayidx1, align 4, !dbg !55, !tbaa !25
%add = add nsw i32 %3, %1, !dbg !55
store i32 %add, ptr %arrayidx1, align 4, !dbg !55, !tbaa !25
%4 = load ptr, ptr %p.addr, align 8, !dbg !56, !tbaa !15
%arrayidx2 = getelementptr inbounds i32, ptr %4, i64 3, !dbg !56
%5 = load i32, ptr %arrayidx2, align 4, !dbg !56, !tbaa !25
ret i32 %5, !dbg !57
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2
declare void @baz(...) #3
attributes #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" }
attributes #1 = { nounwind readnone speculatable }
attributes #2 = { argmemonly nounwind }
attributes #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" }
attributes #4 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
; CHECK: [[TOP]] = !{!"function_entry_count", i64 101}
; CHECK: [[FOO]] = !{!"function_entry_count", i64 151}
!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)
!1 = !DIFile(filename: "temp.c", directory: "llvm/test/Transforms/SampleProfile")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{i32 7, !"PIC Level", i32 2}
!7 = !{!"clang version 8.0.0"}
!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)
!9 = !DISubroutineType(types: !10)
!10 = !{!11, !12}
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
!13 = !{!14}
!14 = !DILocalVariable(name: "p", arg: 1, scope: !8, file: !1, line: 5, type: !12)
!15 = !{!16, !16, i64 0}
!16 = !{!"any pointer", !17, i64 0}
!17 = !{!"omnipotent char", !18, i64 0}
!18 = !{!"Simple C/C++ TBAA"}
!19 = !DILocation(line: 5, column: 14, scope: !8)
!20 = !DILocation(line: 6, column: 7, scope: !8)
!21 = !DILocation(line: 6, column: 3, scope: !8)
!22 = !DILocation(line: 7, column: 8, scope: !23)
!23 = distinct !DILexicalBlock(scope: !8, file: !1, line: 7, column: 7)
!24 = !DILocation(line: 7, column: 7, scope: !23)
!25 = !{!26, !26, i64 0}
!26 = !{!"int", !17, i64 0}
!27 = !DILocation(line: 7, column: 7, scope: !8)
!28 = !DILocation(line: 8, column: 9, scope: !23)
!29 = !DILocation(line: 8, column: 5, scope: !23)
!30 = !DILocation(line: 9, column: 3, scope: !8)
!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)
!32 = !{!33, !34}
!33 = !DILocalVariable(name: "p", arg: 1, scope: !31, file: !1, line: 12, type: !12)
!34 = !DILocalVariable(name: "a", scope: !31, file: !1, line: 13, type: !11)
!35 = !DILocation(line: 12, column: 14, scope: !31)
!36 = !DILocation(line: 13, column: 3, scope: !31)
!37 = !DILocation(line: 13, column: 7, scope: !31)
!38 = !DILocation(line: 14, column: 11, scope: !31)
!39 = !DILocation(line: 14, column: 3, scope: !31)
!40 = !DILocation(line: 14, column: 8, scope: !31)
!41 = !DILocation(line: 15, column: 11, scope: !31)
!42 = !DILocation(line: 15, column: 7, scope: !31)
!43 = !DILocation(line: 15, column: 5, scope: !31)
!44 = !DILocation(line: 16, column: 10, scope: !31)
!45 = !DILocation(line: 16, column: 11, scope: !31)
!46 = !DILocation(line: 17, column: 1, scope: !31)
!47 = !DILocation(line: 16, column: 3, scope: !31)
!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)
!49 = !{!50}
!50 = !DILocalVariable(name: "p", arg: 1, scope: !48, file: !1, line: 19, type: !12)
!51 = !DILocation(line: 19, column: 15, scope: !48)
!52 = !DILocation(line: 20, column: 3, scope: !48)
!53 = !DILocation(line: 21, column: 11, scope: !48)
!54 = !DILocation(line: 21, column: 3, scope: !48)
!55 = !DILocation(line: 21, column: 8, scope: !48)
!56 = !DILocation(line: 22, column: 10, scope: !48)
!57 = !DILocation(line: 22, column: 3, scope: !48)
!100 = !{!"branch_weights", i32 5}
|
