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98ea601eca
Previously extern function is added as BTF_KIND_VAR. This does not work well with existing BTF infrastructure as function expected to use BTF_KIND_FUNC and BTF_KIND_FUNC_PROTO. This patch added extern function to BTF_KIND_FUNC. The two bits 0:1 of btf_type.info are used to indicate what kind of function it is: 0: static 1: global 2: extern Differential Revision: https://reviews.llvm.org/D71638
111 lines
5.7 KiB
LLVM
111 lines
5.7 KiB
LLVM
; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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;
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; Source code:
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; typedef struct t1 { int f1; } __t1;
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; extern __t1 global;
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; int test() { return global.f1; }
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; Compilation flag:
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; clang -target bpf -O2 -g -S -emit-llvm test.c
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%struct.t1 = type { i32 }
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@global = external dso_local local_unnamed_addr global %struct.t1, align 4, !dbg !0
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; Function Attrs: norecurse nounwind readonly
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define dso_local i32 @test() local_unnamed_addr #0 !dbg !15 {
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entry:
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%0 = load i32, i32* getelementptr inbounds (%struct.t1, %struct.t1* @global, i64 0, i32 0), align 4, !dbg !18, !tbaa !19
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ret i32 %0, !dbg !24
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}
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; CHECK: .section .BTF,"",@progbits
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; CHECK-NEXT: .short 60319 # 0xeb9f
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; CHECK-NEXT: .byte 1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .long 24
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 116
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; CHECK-NEXT: .long 116
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; CHECK-NEXT: .long 81
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; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1)
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; CHECK-NEXT: .long 218103808 # 0xd000000
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 2)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 16777248 # 0x1000020
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; CHECK-NEXT: .long 5 # BTF_KIND_FUNC(id = 3)
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; CHECK-NEXT: .long 201326593 # 0xc000001
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 55 # BTF_KIND_TYPEDEF(id = 4)
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; CHECK-NEXT: .long 134217728 # 0x8000000
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; CHECK-NEXT: .long 5
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; CHECK-NEXT: .long 60 # BTF_KIND_STRUCT(id = 5)
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; CHECK-NEXT: .long 67108865 # 0x4000001
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 63
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 0 # 0x0
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; CHECK-NEXT: .long 66 # BTF_KIND_VAR(id = 6)
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; CHECK-NEXT: .long 234881024 # 0xe000000
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 73 # BTF_KIND_DATASEC(id = 7)
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; CHECK-NEXT: .long 251658241 # 0xf000001
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 6
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; CHECK-NEXT: .long global
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .byte 0 # string offset=0
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; CHECK-NEXT: .ascii "int" # string offset=1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "test" # string offset=5
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii ".text" # string offset=10
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "/tmp/home/yhs/work/tests/extern/test.c" # string offset=16
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "__t1" # string offset=55
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "t1" # string offset=60
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "f1" # string offset=63
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "global" # string offset=66
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii ".extern" # string offset=73
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; CHECK-NEXT: .byte 0
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attributes #0 = { norecurse nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!11, !12, !13}
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!llvm.ident = !{!14}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "global", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: false)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git 2798d63180f4cc873bdaf689705fd4f9521ae89f)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
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!3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/extern")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "__t1", file: !3, line: 1, baseType: !7)
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!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 1, size: 32, elements: !8)
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!8 = !{!9}
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!9 = !DIDerivedType(tag: DW_TAG_member, name: "f1", scope: !7, file: !3, line: 1, baseType: !10, size: 32)
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{i32 2, !"Dwarf Version", i32 4}
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!12 = !{i32 2, !"Debug Info Version", i32 3}
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!13 = !{i32 1, !"wchar_size", i32 4}
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!14 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 2798d63180f4cc873bdaf689705fd4f9521ae89f)"}
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!15 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 4, type: !16, scopeLine: 4, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
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!16 = !DISubroutineType(types: !17)
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!17 = !{!10}
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!18 = !DILocation(line: 4, column: 28, scope: !15)
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!19 = !{!20, !21, i64 0}
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!20 = !{!"t1", !21, i64 0}
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!21 = !{!"int", !22, i64 0}
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!22 = !{!"omnipotent char", !23, i64 0}
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!23 = !{!"Simple C/C++ TBAA"}
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!24 = !DILocation(line: 4, column: 14, scope: !15)
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