llvm/test/CodeGen/BPF/BTF/extern-var-struct-weak.ll

   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 ;   typedef struct t1 { int f1; } __t1;
   6 ;   extern __t1 global __attribute__((weak));
   7 ;   int test() { return global.f1; }
   8 ; Compilation flag:
   9 ;   clang -target bpf -O2 -g -S -emit-llvm test.c
  10
  11 %struct.t1 = type { i32 }
  12
  13 @global = extern_weak dso_local local_unnamed_addr global %struct.t1, align 4, !dbg !0
  14 ; Function Attrs: norecurse nounwind readonly
  15 define dso_local i32 @test() local_unnamed_addr #0 !dbg !15 {
  16 entry:
  17   %0 = load i32, ptr @global, align 4, !dbg !18, !tbaa !19
  18   ret i32 %0, !dbg !24
  19 }
  20
  21 ; CHECK:             .section        .BTF,"",@progbits
  22 ; CHECK-NEXT:        .short  60319                   # 0xeb9f
  23 ; CHECK-NEXT:        .byte   1
  24 ; CHECK-NEXT:        .byte   0
  25 ; CHECK-NEXT:        .long   24
  26 ; CHECK-NEXT:        .long   0
  27 ; CHECK-NEXT:        .long   92
  28 ; CHECK-NEXT:        .long   92
  29 ; CHECK-NEXT:        .long   73
  30 ; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 1)
  31 ; CHECK-NEXT:        .long   218103808               # 0xd000000
  32 ; CHECK-NEXT:        .long   2
  33 ; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
  34 ; CHECK-NEXT:        .long   16777216                # 0x1000000
  35 ; CHECK-NEXT:        .long   4
  36 ; CHECK-NEXT:        .long   16777248                # 0x1000020
  37 ; CHECK-NEXT:        .long   5                       # BTF_KIND_FUNC(id = 3)
  38 ; CHECK-NEXT:        .long   201326593               # 0xc000001
  39 ; CHECK-NEXT:        .long   1
  40 ; CHECK-NEXT:        .long   55                      # BTF_KIND_TYPEDEF(id = 4)
  41 ; CHECK-NEXT:        .long   134217728               # 0x8000000
  42 ; CHECK-NEXT:        .long   5
  43 ; CHECK-NEXT:        .long   60                      # BTF_KIND_STRUCT(id = 5)
  44 ; CHECK-NEXT:        .long   67108865                # 0x4000001
  45 ; CHECK-NEXT:        .long   4
  46 ; CHECK-NEXT:        .long   63
  47 ; CHECK-NEXT:        .long   2
  48 ; CHECK-NEXT:        .long   0                       # 0x0
  49 ; CHECK-NEXT:        .long   66                      # BTF_KIND_VAR(id = 6)
  50 ; CHECK-NEXT:        .long   234881024               # 0xe000000
  51 ; CHECK-NEXT:        .long   4
  52 ; CHECK-NEXT:        .long   2
  53 ; CHECK-NEXT:        .byte   0                       # string offset=0
  54 ; CHECK-NEXT:        .ascii  "int"                   # string offset=1
  55 ; CHECK-NEXT:        .byte   0
  56 ; CHECK-NEXT:        .ascii  "test"                  # string offset=5
  57 ; CHECK-NEXT:        .byte   0
  58 ; CHECK-NEXT:        .ascii  ".text"                 # string offset=10
  59 ; CHECK-NEXT:        .byte   0
  60 ; CHECK-NEXT:        .ascii  "/tmp/home/yhs/work/tests/extern/test.c" # string offset=16
  61 ; CHECK-NEXT:        .byte   0
  62 ; CHECK-NEXT:        .ascii  "__t1"                  # string offset=55
  63 ; CHECK-NEXT:        .byte   0
  64 ; CHECK-NEXT:        .ascii  "t1"                    # string offset=60
  65 ; CHECK-NEXT:        .byte   0
  66 ; CHECK-NEXT:        .ascii  "f1"                    # string offset=63
  67 ; CHECK-NEXT:        .byte   0
  68 ; CHECK-NEXT:        .ascii  "global"                # string offset=66
  69 ; CHECK-NEXT:        .byte   0
  70
  71 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" }
  72
  73 !llvm.dbg.cu = !{!2}
  74 !llvm.module.flags = !{!11, !12, !13}
  75 !llvm.ident = !{!14}
  76
  77 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
  78 !1 = distinct !DIGlobalVariable(name: "global", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: false)
  79 !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, globals: !5, nameTableKind: None)
  80 !3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/extern")
  81 !4 = !{}
  82 !5 = !{!0}
  83 !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "__t1", file: !3, line: 1, baseType: !7)
  84 !7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 1, size: 32, elements: !8)
  85 !8 = !{!9}
  86 !9 = !DIDerivedType(tag: DW_TAG_member, name: "f1", scope: !7, file: !3, line: 1, baseType: !10, size: 32)
  87 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
  88 !11 = !{i32 7, !"Dwarf Version", i32 4}
  89 !12 = !{i32 2, !"Debug Info Version", i32 3}
  90 !13 = !{i32 1, !"wchar_size", i32 4}
  91 !14 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 71a9518c93fe1dce9611c24bc707e5baf1f39f0d)"}
  92 !15 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 3, type: !16, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
  93 !16 = !DISubroutineType(types: !17)
  94 !17 = !{!10}
  95 !18 = !DILocation(line: 3, column: 28, scope: !15)
  96 !19 = !{!20, !21, i64 0}
  97 !20 = !{!"t1", !21, i64 0}
  98 !21 = !{!"int", !22, i64 0}
  99 !22 = !{!"omnipotent char", !23, i64 0}
 100 !23 = !{!"Simple C/C++ TBAA"}
 101 !24 = !DILocation(line: 3, column: 14, scope: !15)