1; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s 2; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s 3; 4; Source code: 5; const volatile char g __attribute__((weak)) = 2; 6; int test() { 7; return g; 8; } 9; Compilation flag: 10; clang -target bpf -O2 -g -S -emit-llvm test.c 11 12@g = weak_odr dso_local constant i8 2, align 1, !dbg !0 13 14; Function Attrs: nofree norecurse nounwind willreturn 15define dso_local i32 @test() local_unnamed_addr #0 !dbg !13 { 16entry: 17 %0 = load volatile i8, i8* @g, align 1, !dbg !17, !tbaa !18 18 %conv = sext i8 %0 to i32, !dbg !17 19 ret i32 %conv, !dbg !21 20} 21 22; CHECK: .long 0 # BTF_KIND_FUNC_PROTO(id = 1) 23; CHECK-NEXT: .long 218103808 # 0xd000000 24; CHECK-NEXT: .long 2 25; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 2) 26; CHECK-NEXT: .long 16777216 # 0x1000000 27; CHECK-NEXT: .long 4 28; CHECK-NEXT: .long 16777248 # 0x1000020 29; CHECK-NEXT: .long 5 # BTF_KIND_FUNC(id = 3) 30; CHECK-NEXT: .long 201326593 # 0xc000001 31; CHECK-NEXT: .long 1 32; CHECK-NEXT: .long 0 # BTF_KIND_CONST(id = 4) 33; CHECK-NEXT: .long 167772160 # 0xa000000 34; CHECK-NEXT: .long 5 35; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 5) 36; CHECK-NEXT: .long 150994944 # 0x9000000 37; CHECK-NEXT: .long 6 38; CHECK-NEXT: .long 47 # BTF_KIND_INT(id = 6) 39; CHECK-NEXT: .long 16777216 # 0x1000000 40; CHECK-NEXT: .long 1 41; CHECK-NEXT: .long 16777224 # 0x1000008 42; CHECK-NEXT: .long 52 # BTF_KIND_VAR(id = 7) 43; CHECK-NEXT: .long 234881024 # 0xe000000 44; CHECK-NEXT: .long 4 45; CHECK-NEXT: .long 1 46; CHECK-NEXT: .long 54 # BTF_KIND_DATASEC(id = 8) 47; CHECK-NEXT: .long 251658241 # 0xf000001 48; CHECK-NEXT: .long 0 49; CHECK-NEXT: .long 7 50; CHECK-NEXT: .long g 51; CHECK-NEXT: .long 1 52 53; CHECK: .ascii "int" # string offset=1 54; CHECK: .ascii "test" # string offset=5 55; CHECK: .ascii "char" # string offset=47 56; CHECK: .byte 103 # string offset=52 57; CHECK: .ascii ".rodata" # string offset=54 58 59attributes #0 = { nofree norecurse nounwind willreturn "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 60 61!llvm.dbg.cu = !{!2} 62!llvm.module.flags = !{!9, !10, !11} 63!llvm.ident = !{!12} 64 65!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 66!1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) 67!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) 68!3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/btf/tests") 69!4 = !{} 70!5 = !{!0} 71!6 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !7) 72!7 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !8) 73!8 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 74!9 = !{i32 7, !"Dwarf Version", i32 4} 75!10 = !{i32 2, !"Debug Info Version", i32 3} 76!11 = !{i32 1, !"wchar_size", i32 4} 77!12 = !{!"clang version 13.0.0 (https://github.com/llvm/llvm-project.git 9cc417cbca1cece0d55fa3d1e15682943a06139e)"} 78!13 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 2, type: !14, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4) 79!14 = !DISubroutineType(types: !15) 80!15 = !{!16} 81!16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 82!17 = !DILocation(line: 3, column: 10, scope: !13) 83!18 = !{!19, !19, i64 0} 84!19 = !{!"omnipotent char", !20, i64 0} 85!20 = !{!"Simple C/C++ TBAA"} 86!21 = !DILocation(line: 3, column: 3, scope: !13) 87