test/CodeGen/BPF/BTF/static-var-readonly.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 ;   static volatile const char a;
   6 ;   int foo() {
   7 ;     static volatile const short b = 3;
   8 ;     return a + b;
   9 ;   }
  10 ; Compilation flag:
  11 ;   clang -target bpf -O2 -g -S -emit-llvm test.c
  12
  13 @foo.b = internal constant i16 3, align 2, !dbg !0
  14 @a = internal constant i8 0, align 1, !dbg !10
  15
  16 ; Function Attrs: norecurse nounwind
  17 define dso_local i32 @foo() local_unnamed_addr #0 !dbg !2 {
  18   %1 = load volatile i8, i8* @a, align 1, !dbg !22, !tbaa !23
  19   %2 = sext i8 %1 to i32, !dbg !22
  20   %3 = load volatile i16, i16* @foo.b, align 2, !dbg !26, !tbaa !27
  21   %4 = sext i16 %3 to i32, !dbg !26
  22   %5 = add nsw i32 %4, %2, !dbg !29
  23   ret i32 %5, !dbg !30
  24 }
  25
  26 ; CHECK:             .section        .BTF,"",@progbits
  27 ; CHECK-NEXT:        .short  60319                   # 0xeb9f
  28 ; CHECK-NEXT:        .byte   1
  29 ; CHECK-NEXT:        .byte   0
  30 ; CHECK-NEXT:        .long   24
  31 ; CHECK-NEXT:        .long   0
  32 ; CHECK-NEXT:        .long   188
  33 ; CHECK-NEXT:        .long   188
  34 ; CHECK-NEXT:        .long   79
  35 ; CHECK-NEXT:        .long   0                       # BTF_KIND_FUNC_PROTO(id = 1)
  36 ; CHECK-NEXT:        .long   218103808               # 0xd000000
  37 ; CHECK-NEXT:        .long   2
  38 ; CHECK-NEXT:        .long   1                       # BTF_KIND_INT(id = 2)
  39 ; CHECK-NEXT:        .long   16777216                # 0x1000000
  40 ; CHECK-NEXT:        .long   4
  41 ; CHECK-NEXT:        .long   16777248                # 0x1000020
  42 ; CHECK-NEXT:        .long   5                       # BTF_KIND_FUNC(id = 3)
  43 ; CHECK-NEXT:        .long   201326592               # 0xc000000
  44 ; CHECK-NEXT:        .long   1
  45 ; CHECK-NEXT:        .long   0                       # BTF_KIND_CONST(id = 4)
  46 ; CHECK-NEXT:        .long   167772160               # 0xa000000
  47 ; CHECK-NEXT:        .long   5
  48 ; CHECK-NEXT:        .long   0                       # BTF_KIND_VOLATILE(id = 5)
  49 ; CHECK-NEXT:        .long   150994944               # 0x9000000
  50 ; CHECK-NEXT:        .long   6
  51 ; CHECK-NEXT:        .long   52                      # BTF_KIND_INT(id = 6)
  52 ; CHECK-NEXT:        .long   16777216                # 0x1000000
  53 ; CHECK-NEXT:        .long   2
  54 ; CHECK-NEXT:        .long   16777232                # 0x1000010
  55 ; CHECK-NEXT:        .long   58                      # BTF_KIND_VAR(id = 7)
  56 ; CHECK-NEXT:        .long   234881024               # 0xe000000
  57 ; CHECK-NEXT:        .long   4
  58 ; CHECK-NEXT:        .long   0
  59 ; CHECK-NEXT:        .long   0                       # BTF_KIND_CONST(id = 8)
  60 ; CHECK-NEXT:        .long   167772160               # 0xa000000
  61 ; CHECK-NEXT:        .long   9
  62 ; CHECK-NEXT:        .long   0                       # BTF_KIND_VOLATILE(id = 9)
  63 ; CHECK-NEXT:        .long   150994944               # 0x9000000
  64 ; CHECK-NEXT:        .long   10
  65 ; CHECK-NEXT:        .long   64                      # BTF_KIND_INT(id = 10)
  66 ; CHECK-NEXT:        .long   16777216                # 0x1000000
  67 ; CHECK-NEXT:        .long   1
  68 ; CHECK-NEXT:        .long   16777224                # 0x1000008
  69 ; CHECK-NEXT:        .long   69                      # BTF_KIND_VAR(id = 11)
  70 ; CHECK-NEXT:        .long   234881024               # 0xe000000
  71 ; CHECK-NEXT:        .long   8
  72 ; CHECK-NEXT:        .long   0
  73 ; CHECK-NEXT:        .long   71                      # BTF_KIND_DATASEC(id = 12)
  74 ; CHECK-NEXT:        .long   251658242               # 0xf000002
  75 ; CHECK-NEXT:        .long   0
  76 ; CHECK-NEXT:        .long   7
  77 ; CHECK-NEXT:        .long   foo.b
  78 ; CHECK-NEXT:        .long   2
  79 ; CHECK-NEXT:        .long   11
  80 ; CHECK-NEXT:        .long   a
  81 ; CHECK-NEXT:        .long   1
  82 ; CHECK-NEXT:        .byte   0                       # string offset=0
  83 ; CHECK-NEXT:        .ascii  "int"                   # string offset=1
  84 ; CHECK-NEXT:        .byte   0
  85 ; CHECK-NEXT:        .ascii  "foo"                   # string offset=5
  86 ; CHECK-NEXT:        .byte   0
  87 ; CHECK-NEXT:        .ascii  ".text"                 # string offset=9
  88 ; CHECK-NEXT:        .byte   0
  89 ; CHECK-NEXT:        .ascii  "/home/yhs/work/tests/llvm/bug/test.c" # string offset=15
  90 ; CHECK-NEXT:        .byte   0
  91 ; CHECK-NEXT:        .ascii  "short"                 # string offset=52
  92 ; CHECK-NEXT:        .byte   0
  93 ; CHECK-NEXT:        .ascii  "foo.b"                 # string offset=58
  94 ; CHECK-NEXT:        .byte   0
  95 ; CHECK-NEXT:        .ascii  "char"                  # string offset=64
  96 ; CHECK-NEXT:        .byte   0
  97 ; CHECK-NEXT:        .byte   97                      # string offset=69
  98 ; CHECK-NEXT:        .byte   0
  99 ; CHECK-NEXT:        .ascii  ".rodata"               # string offset=71
 100 ; CHECK-NEXT:        .byte   0
 101
 102 attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" }
 103
 104 !llvm.dbg.cu = !{!7}
 105 !llvm.module.flags = !{!18, !19, !20}
 106 !llvm.ident = !{!21}
 107
 108 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
 109 !1 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 3, type: !15, isLocal: true, isDefinition: true)
 110 !2 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 2, type: !4, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !7, retainedNodes: !8)
 111 !3 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/llvm/bug")
 112 !4 = !DISubroutineType(types: !5)
 113 !5 = !{!6}
 114 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 115 !7 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.20181009 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !8, globals: !9, nameTableKind: None)
 116 !8 = !{}
 117 !9 = !{!0, !10}
 118 !10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
 119 !11 = distinct !DIGlobalVariable(name: "a", scope: !7, file: !3, line: 1, type: !12, isLocal: true, isDefinition: true)
 120 !12 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !13)
 121 !13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !14)
 122 !14 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
 123 !15 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !16)
 124 !16 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !17)
 125 !17 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
 126 !18 = !{i32 2, !"Dwarf Version", i32 4}
 127 !19 = !{i32 2, !"Debug Info Version", i32 3}
 128 !20 = !{i32 1, !"wchar_size", i32 4}
 129 !21 = !{!"clang version 8.0.20181009 "}
 130 !22 = !DILocation(line: 4, column: 10, scope: !2)
 131 !23 = !{!24, !24, i64 0}
 132 !24 = !{!"omnipotent char", !25, i64 0}
 133 !25 = !{!"Simple C/C++ TBAA"}
 134 !26 = !DILocation(line: 4, column: 14, scope: !2)
 135 !27 = !{!28, !28, i64 0}
 136 !28 = !{!"short", !24, i64 0}
 137 !29 = !DILocation(line: 4, column: 12, scope: !2)
 138 !30 = !DILocation(line: 4, column: 3, scope: !2)