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