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 int __int;
5;   typedef struct v3 { int a; __int b[4][4]; } __v3;
6;   #define _(x) (__builtin_preserve_access_index(x))
7;   int get_value(const int *arg);
8;   int test(__v3 *arg) {
9;     return get_value(_(&arg[1].b[2][3]));
10;   }
11; Compilation flag:
12;   clang -target bpf -O2 -g -S -emit-llvm test.c
13
14%struct.v3 = type { i32, [4 x [4 x i32]] }
15
16; Function Attrs: nounwind
17define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !21 {
18entry:
19  call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !25, metadata !DIExpression()), !dbg !26
20  %0 = tail call %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3* %arg, i32 0, i32 1), !dbg !27, !llvm.preserve.access.index !4
21  %1 = tail call [4 x [4 x i32]]* @llvm.preserve.struct.access.index.p0a4a4i32.p0s_struct.v3s(%struct.v3* %0, i32 1, i32 1), !dbg !27, !llvm.preserve.access.index !6
22  %2 = tail call [4 x i32]* @llvm.preserve.array.access.index.p0a4i32.p0a4a4i32([4 x [4 x i32]]* %1, i32 1, i32 2), !dbg !27, !llvm.preserve.access.index !11
23  %3 = tail call i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]* %2, i32 1, i32 3), !dbg !27, !llvm.preserve.access.index !15
24  %call = tail call i32 @get_value(i32* %3) #4, !dbg !28
25  ret i32 %call, !dbg !29
26}
27
28; CHECK:              r2 = 116
29; CHECK:              r1 += r2
30; CHECK:              call get_value
31
32; CHECK:              .long   6                       # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
33
34; CHECK:              .ascii  "v3"                    # string offset=6
35; CHECK:              .ascii  ".text"                 # string offset=52
36; CHECK:              .ascii  "1:1:2:3"               # string offset=58
37
38; CHECK:              .long   12                      # OffsetReloc
39; CHECK-NEXT:         .long   52                      # Offset reloc section string offset=52
40; CHECK-NEXT:         .long   1
41; CHECK-NEXT:         .long   .Ltmp{{[0-9]+}}
42; CHECK-NEXT:         .long   [[TID1]]
43; CHECK-NEXT:         .long   58
44
45declare dso_local i32 @get_value(i32*) local_unnamed_addr #1
46
47; Function Attrs: nounwind readnone
48declare %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3*, i32, i32) #2
49
50; Function Attrs: nounwind readnone
51declare [4 x [4 x i32]]* @llvm.preserve.struct.access.index.p0a4a4i32.p0s_struct.v3s(%struct.v3*, i32, i32) #2
52
53; Function Attrs: nounwind readnone
54declare [4 x i32]* @llvm.preserve.array.access.index.p0a4i32.p0a4a4i32([4 x [4 x i32]]*, i32, i32) #2
55
56; Function Attrs: nounwind readnone
57declare i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]*, i32, i32) #2
58
59; Function Attrs: nounwind readnone speculatable willreturn
60declare void @llvm.dbg.value(metadata, metadata, metadata) #3
61
62attributes #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" }
63attributes #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" }
64attributes #2 = { nounwind readnone }
65attributes #3 = { nounwind readnone speculatable willreturn }
66attributes #4 = { nounwind }
67
68!llvm.dbg.cu = !{!0}
69!llvm.module.flags = !{!17, !18, !19}
70!llvm.ident = !{!20}
71
72!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)
73!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
74!2 = !{}
75!3 = !{!4, !11, !15}
76!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
77!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 2, baseType: !6)
78!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 2, size: 544, elements: !7)
79!7 = !{!8, !10}
80!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 2, baseType: !9, size: 32)
81!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
82!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 2, baseType: !11, size: 512, offset: 32)
83!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 512, elements: !13)
84!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !1, line: 1, baseType: !9)
85!13 = !{!14, !14}
86!14 = !DISubrange(count: 4)
87!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !16)
88!16 = !{!14}
89!17 = !{i32 2, !"Dwarf Version", i32 4}
90!18 = !{i32 2, !"Debug Info Version", i32 3}
91!19 = !{i32 1, !"wchar_size", i32 4}
92!20 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
93!21 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 5, type: !22, scopeLine: 5, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !24)
94!22 = !DISubroutineType(types: !23)
95!23 = !{!9, !4}
96!24 = !{!25}
97!25 = !DILocalVariable(name: "arg", arg: 1, scope: !21, file: !1, line: 5, type: !4)
98!26 = !DILocation(line: 0, scope: !21)
99!27 = !DILocation(line: 6, column: 20, scope: !21)
100!28 = !DILocation(line: 6, column: 10, scope: !21)
101!29 = !DILocation(line: 6, column: 3, scope: !21)
102