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
|
; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
; Source code:
; void (*a1)(int p1);
; struct t1 { void (*a1)(int p1); } b1;
; void f1(int p2) { }
; Compilation flag:
; clang -target bpf -O2 -g -S -emit-llvm t.c
%struct.t1 = type { void (i32)* }
@a1 = common dso_local local_unnamed_addr global void (i32)* null, align 8, !dbg !0
@b1 = common dso_local local_unnamed_addr global %struct.t1 zeroinitializer, align 8, !dbg !6
; Function Attrs: nounwind readnone
define dso_local void @f1(i32 %p2) local_unnamed_addr #0 !dbg !19 {
entry:
call void @llvm.dbg.value(metadata i32 %p2, metadata !21, metadata !DIExpression()), !dbg !22
ret void, !dbg !23
}
; CHECK: .section .BTF,"",@progbits
; CHECK-NEXT: .short 60319 # 0xeb9f
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .long 24
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 104
; CHECK-NEXT: .long 104
; CHECK-NEXT: .long 32
; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 1)
; CHECK-NEXT: .long 16777216 # 0x1000000
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long 16777248 # 0x1000020
; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 2)
; CHECK-NEXT: .long 218103809 # 0xd000001
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 5
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 8 # BTF_KIND_FUNC(id = 3)
; CHECK-NEXT: .long 201326593 # 0xc000001
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 0 # BTF_KIND_PTR(id = 4)
; CHECK-NEXT: .long 33554432 # 0x2000000
; CHECK-NEXT: .long 5
; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 5)
; CHECK-NEXT: .long 218103809 # 0xd000001
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 26 # BTF_KIND_STRUCT(id = 6)
; CHECK-NEXT: .long 67108865 # 0x4000001
; CHECK-NEXT: .long 8
; CHECK-NEXT: .long 29
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long 0 # 0x0
; CHECK-NEXT: .byte 0 # string offset=0
; CHECK-NEXT: .ascii "int" # string offset=1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "p2" # string offset=5
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "f1" # string offset=8
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii ".text" # string offset=11
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "/tmp/t.c" # string offset=17
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "t1" # string offset=26
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "a1" # string offset=29
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .section .BTF.ext,"",@progbits
; CHECK-NEXT: .short 60319 # 0xeb9f
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .long 32
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 20
; CHECK-NEXT: .long 20
; CHECK-NEXT: .long 28
; CHECK-NEXT: .long 48
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 8 # FuncInfo
; CHECK-NEXT: .long 11 # FuncInfo section string offset=11
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long .Lfunc_begin0
; CHECK-NEXT: .long 3
; CHECK-NEXT: .long 16 # LineInfo
; CHECK-NEXT: .long 11 # LineInfo section string offset=11
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
; CHECK-NEXT: .long 17
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 3091 # Line 3 Col 19
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind readnone "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!15, !16, !17}
!llvm.ident = !{!18}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "a1", scope: !2, file: !3, line: 1, type: !11, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
!3 = !DIFile(filename: "t.c", directory: "/tmp")
!4 = !{}
!5 = !{!0, !6}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "b1", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 2, size: 64, elements: !9)
!9 = !{!10}
!10 = !DIDerivedType(tag: DW_TAG_member, name: "a1", scope: !8, file: !3, line: 2, baseType: !11, size: 64)
!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
!12 = !DISubroutineType(types: !13)
!13 = !{null, !14}
!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!15 = !{i32 2, !"Dwarf Version", i32 4}
!16 = !{i32 2, !"Debug Info Version", i32 3}
!17 = !{i32 1, !"wchar_size", i32 4}
!18 = !{!"clang version 8.0.0 (trunk 345296) (llvm/trunk 345297)"}
!19 = distinct !DISubprogram(name: "f1", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !20)
!20 = !{!21}
!21 = !DILocalVariable(name: "p2", arg: 1, scope: !19, file: !3, line: 3, type: !14)
!22 = !DILocation(line: 3, column: 13, scope: !19)
!23 = !DILocation(line: 3, column: 19, scope: !19)
|
