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; Source code:
4;   typedef struct v3 { int a; int b; } __v3;
5;   #define _(x) (__builtin_preserve_access_index(x))
6;   int get_value(const int *arg);
7;   int test(__v3 *arg) {
8;     return get_value(_(&arg[1].b));
9;   }
10; Compilation flag:
11;   clang -target bpf -O2 -g -S -emit-llvm test.c
12
13%struct.v3 = type { i32, i32 }
14
15; Function Attrs: nounwind
16define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !15 {
17entry:
18  call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !19, metadata !DIExpression()), !dbg !20
19  %0 = tail call %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3* %arg, i32 0, i32 1), !dbg !21, !llvm.preserve.access.index !4
20  %1 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v3s(%struct.v3* %0, i32 1, i32 1), !dbg !21, !llvm.preserve.access.index !6
21  %call = tail call i32 @get_value(i32* %1) #4, !dbg !22
22  ret i32 %call, !dbg !23
23}
24
25; CHECK:              r2 = 12
26; CHECK-NEXT:         r1 += r2
27; CHECK:              call get_value
28
29; CHECK:              .long   6                       # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
30; CHECK:              .ascii  "v3"                    # string offset=6
31; CHECK:              .ascii  ".text"                 # string offset=26
32; CHECK:              .ascii  "1:1"                   # string offset=32
33
34; CHECK:              .long   12                      # OffsetReloc
35; CHECK-NEXT:         .long   26                      # Offset reloc section string offset=26
36; CHECK-NEXT:         .long   1
37; CHECK-NEXT:         .long   .Ltmp{{[0-9]+}}
38; CHECK-NEXT:         .long   [[TID1]]
39; CHECK-NEXT:         .long   32
40
41declare dso_local i32 @get_value(i32*) local_unnamed_addr #1
42
43; Function Attrs: nounwind readnone
44declare %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3*, i32, i32) #2
45
46; Function Attrs: nounwind readnone
47declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v3s(%struct.v3*, i32, i32) #2
48
49; Function Attrs: nounwind readnone speculatable willreturn
50declare void @llvm.dbg.value(metadata, metadata, metadata) #3
51
52attributes #0 = { nounwind "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" }
53attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="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" }
54attributes #2 = { nounwind readnone }
55attributes #3 = { nounwind readnone speculatable willreturn }
56attributes #4 = { nounwind }
57
58!llvm.dbg.cu = !{!0}
59!llvm.module.flags = !{!11, !12, !13}
60!llvm.ident = !{!14}
61
62!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
63!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
64!2 = !{}
65!3 = !{!4}
66!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
67!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 1, baseType: !6)
68!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 1, size: 64, elements: !7)
69!7 = !{!8, !10}
70!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 1, baseType: !9, size: 32)
71!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
72!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 1, baseType: !9, size: 32, offset: 32)
73!11 = !{i32 2, !"Dwarf Version", i32 4}
74!12 = !{i32 2, !"Debug Info Version", i32 3}
75!13 = !{i32 1, !"wchar_size", i32 4}
76!14 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
77!15 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 4, type: !16, scopeLine: 4, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !18)
78!16 = !DISubroutineType(types: !17)
79!17 = !{!9, !4}
80!18 = !{!19}
81!19 = !DILocalVariable(name: "arg", arg: 1, scope: !15, file: !1, line: 4, type: !4)
82!20 = !DILocation(line: 0, scope: !15)
83!21 = !DILocation(line: 5, column: 20, scope: !15)
84!22 = !DILocation(line: 5, column: 10, scope: !15)
85!23 = !DILocation(line: 5, column: 3, scope: !15)
86