extern-var-weak-section.ll
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; 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:
; extern int global_func(char c) __attribute__((weak, section("abc")));
; extern char ch __attribute__((weak, section("abc")));
; int test() {
; return global_func(0) + ch;
; }
; Compilation flag:
; clang -target bpf -O2 -g -S -emit-llvm test.c
@ch = extern_weak dso_local local_unnamed_addr global i8, section "abc", align 1, !dbg !0
; Function Attrs: nounwind
define dso_local i32 @test() local_unnamed_addr #0 !dbg !16 {
entry:
%call = tail call i32 @global_func(i8 signext 0) #2, !dbg !19
%0 = load i8, i8* @ch, align 1, !dbg !20, !tbaa !21
%conv = sext i8 %0 to i32, !dbg !20
%add = add nsw i32 %call, %conv, !dbg !24
ret i32 %add, !dbg !25
}
declare !dbg !6 extern_weak dso_local i32 @global_func(i8 signext) local_unnamed_addr #1 section "abc"
; 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 128
; CHECK-NEXT: .long 128
; CHECK-NEXT: .long 79
; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1)
; CHECK-NEXT: .long 218103808 # 0xd000000
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 2)
; CHECK-NEXT: .long 16777216 # 0x1000000
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long 16777248 # 0x1000020
; CHECK-NEXT: .long 5 # BTF_KIND_FUNC(id = 3)
; CHECK-NEXT: .long 201326593 # 0xc000001
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 4)
; CHECK-NEXT: .long 218103809 # 0xd000001
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 5
; CHECK-NEXT: .long 55 # BTF_KIND_INT(id = 5)
; CHECK-NEXT: .long 16777216 # 0x1000000
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 16777224 # 0x1000008
; CHECK-NEXT: .long 60 # BTF_KIND_FUNC(id = 6)
; CHECK-NEXT: .long 201326594 # 0xc000002
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long 72 # BTF_KIND_VAR(id = 7)
; CHECK-NEXT: .long 234881024 # 0xe000000
; CHECK-NEXT: .long 5
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 75 # BTF_KIND_DATASEC(id = 8)
; CHECK-NEXT: .long 251658241 # 0xf000001
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 7
; CHECK-NEXT: .long ch
; CHECK-NEXT: .long 1
; CHECK-NEXT: .byte 0 # string offset=0
; CHECK-NEXT: .ascii "int" # string offset=1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "test" # string offset=5
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii ".text" # string offset=10
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "/tmp/home/yhs/work/tests/extern/test.c" # string offset=16
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "char" # string offset=55
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "global_func" # string offset=60
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "ch" # string offset=72
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .ascii "abc" # string offset=75
; CHECK-NEXT: .byte 0
attributes #0 = { nounwind "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" }
attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!12, !13, !14}
!llvm.ident = !{!15}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "ch", scope: !2, file: !3, line: 2, type: !10, isLocal: false, isDefinition: false)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git 71a9518c93fe1dce9611c24bc707e5baf1f39f0d)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !11, nameTableKind: None)
!3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/extern")
!4 = !{}
!5 = !{!6}
!6 = !DISubprogram(name: "global_func", scope: !3, file: !3, line: 1, type: !7, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
!7 = !DISubroutineType(types: !8)
!8 = !{!9, !10}
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!11 = !{!0}
!12 = !{i32 7, !"Dwarf Version", i32 4}
!13 = !{i32 2, !"Debug Info Version", i32 3}
!14 = !{i32 1, !"wchar_size", i32 4}
!15 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 71a9518c93fe1dce9611c24bc707e5baf1f39f0d)"}
!16 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 3, type: !17, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
!17 = !DISubroutineType(types: !18)
!18 = !{!9}
!19 = !DILocation(line: 4, column: 10, scope: !16)
!20 = !DILocation(line: 4, column: 27, scope: !16)
!21 = !{!22, !22, i64 0}
!22 = !{!"omnipotent char", !23, i64 0}
!23 = !{!"Simple C/C++ TBAA"}
!24 = !DILocation(line: 4, column: 25, scope: !16)
!25 = !DILocation(line: 4, column: 3, scope: !16)