86 lines
4.5 KiB
LLVM
86 lines
4.5 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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; const volatile char g __attribute__((weak)) = 2;
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; int test() {
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; return g;
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; }
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; Compilation flag:
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; clang -target bpf -O2 -g -S -emit-llvm test.c
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@g = weak_odr dso_local constant i8 2, align 1, !dbg !0
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; Function Attrs: nofree norecurse nounwind willreturn
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define dso_local i32 @test() local_unnamed_addr #0 !dbg !13 {
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entry:
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%0 = load volatile i8, ptr @g, align 1, !dbg !17, !tbaa !18
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%conv = sext i8 %0 to i32, !dbg !17
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ret i32 %conv, !dbg !21
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}
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; CHECK: .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 0 # BTF_KIND_CONST(id = 4)
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; CHECK-NEXT: .long 167772160 # 0xa000000
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; CHECK-NEXT: .long 5
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; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 5)
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; CHECK-NEXT: .long 150994944 # 0x9000000
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; CHECK-NEXT: .long 6
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; CHECK-NEXT: .long 47 # BTF_KIND_INT(id = 6)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 16777224 # 0x1000008
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; CHECK-NEXT: .long 52 # BTF_KIND_VAR(id = 7)
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; CHECK-NEXT: .long 234881024 # 0xe000000
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 54 # BTF_KIND_DATASEC(id = 8)
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; CHECK-NEXT: .long 251658241 # 0xf000001
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 7
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; CHECK-NEXT: .long g
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; CHECK-NEXT: .long 1
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; CHECK: .ascii "int" # string offset=1
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; CHECK: .ascii "test" # string offset=5
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; CHECK: .ascii "char" # string offset=47
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; CHECK: .byte 103 # string offset=52
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; CHECK: .ascii ".rodata" # string offset=54
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attributes #0 = { nofree norecurse nounwind willreturn "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!9, !10, !11}
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!llvm.ident = !{!12}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 13.0.0 (https://github.com/llvm/llvm-project.git 9cc417cbca1cece0d55fa3d1e15682943a06139e)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
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!3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/btf/tests")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !7)
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!7 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !8)
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!8 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!9 = !{i32 7, !"Dwarf Version", i32 4}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{i32 1, !"wchar_size", i32 4}
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!12 = !{!"clang version 13.0.0 (https://github.com/llvm/llvm-project.git 9cc417cbca1cece0d55fa3d1e15682943a06139e)"}
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!13 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 2, type: !14, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
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!14 = !DISubroutineType(types: !15)
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!15 = !{!16}
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!16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!17 = !DILocation(line: 3, column: 10, scope: !13)
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!18 = !{!19, !19, i64 0}
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!19 = !{!"omnipotent char", !20, i64 0}
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!20 = !{!"Simple C/C++ TBAA"}
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!21 = !DILocation(line: 3, column: 3, scope: !13)
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