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; RUN: llc -march=bpfel -mattr=+alu32 -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
4; RUN: llc -march=bpfeb -mattr=+alu32 -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
5; Source code:
6;   typedef int __int;
7;   typedef struct v3 { int a; __int b[4][4][4]; } __v3;
8;   #define _(x) (__builtin_preserve_access_index(x))
9;   int get_value(const int *arg);
10;   int test(__v3 *arg) {
11;     return get_value(_(&arg[1].b[2][3][2]));
12;   }
13; Compilation flag:
14;   clang -target bpf -O2 -g -S -emit-llvm test.c
15
16%struct.v3 = type { i32, [4 x [4 x [4 x i32]]] }
17
18; Function Attrs: nounwind
19define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !23 {
20entry:
21  call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !27, metadata !DIExpression()), !dbg !28
22  %0 = tail call %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3* %arg, i32 0, i32 1), !dbg !29, !llvm.preserve.access.index !4
23  %1 = tail call [4 x [4 x [4 x i32]]]* @llvm.preserve.struct.access.index.p0a4a4a4i32.p0s_struct.v3s(%struct.v3* %0, i32 1, i32 1), !dbg !29, !llvm.preserve.access.index !6
24  %2 = tail call [4 x [4 x i32]]* @llvm.preserve.array.access.index.p0a4a4i32.p0a4a4a4i32([4 x [4 x [4 x i32]]]* %1, i32 1, i32 2), !dbg !29, !llvm.preserve.access.index !11
25  %3 = tail call [4 x i32]* @llvm.preserve.array.access.index.p0a4i32.p0a4a4i32([4 x [4 x i32]]* %2, i32 1, i32 3), !dbg !29, !llvm.preserve.access.index !15
26  %4 = tail call i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]* %3, i32 1, i32 2), !dbg !29, !llvm.preserve.access.index !17
27  %call = tail call i32 @get_value(i32* %4) #4, !dbg !30
28  ret i32 %call, !dbg !31
29}
30
31; CHECK:             r2 = 448
32; CHECK:             r1 += r2
33; CHECK:             call get_value
34
35; CHECK:             .long   6                       # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
36
37; CHECK:             .ascii  "v3"                    # string offset=6
38; CHECK:             .ascii  ".text"                 # string offset=52
39; CHECK:             .ascii  "1:1:2:3:2"             # string offset=58
40
41; CHECK:             .long   16                      # FieldReloc
42; CHECK-NEXT:        .long   52                      # Field reloc section string offset=52
43; CHECK-NEXT:        .long   1
44; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
45; CHECK-NEXT:        .long   [[TID1]]
46; CHECK-NEXT:        .long   58
47; CHECK-NEXT:        .long   0
48
49declare dso_local i32 @get_value(i32*) local_unnamed_addr #1
50
51; Function Attrs: nounwind readnone
52declare %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3*, i32, i32) #2
53
54; Function Attrs: nounwind readnone
55declare [4 x [4 x [4 x i32]]]* @llvm.preserve.struct.access.index.p0a4a4a4i32.p0s_struct.v3s(%struct.v3*, i32, i32) #2
56
57; Function Attrs: nounwind readnone
58declare [4 x [4 x i32]]* @llvm.preserve.array.access.index.p0a4a4i32.p0a4a4a4i32([4 x [4 x [4 x i32]]]*, i32, i32) #2
59
60; Function Attrs: nounwind readnone
61declare [4 x i32]* @llvm.preserve.array.access.index.p0a4i32.p0a4a4i32([4 x [4 x i32]]*, i32, i32) #2
62
63; Function Attrs: nounwind readnone
64declare i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]*, i32, i32) #2
65
66; Function Attrs: nounwind readnone speculatable willreturn
67declare void @llvm.dbg.value(metadata, metadata, metadata) #3
68
69attributes #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" }
70attributes #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" }
71attributes #2 = { nounwind readnone }
72attributes #3 = { nounwind readnone speculatable willreturn }
73attributes #4 = { nounwind }
74
75!llvm.dbg.cu = !{!0}
76!llvm.module.flags = !{!19, !20, !21}
77!llvm.ident = !{!22}
78
79!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)
80!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
81!2 = !{}
82!3 = !{!4, !11, !15, !17}
83!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
84!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 2, baseType: !6)
85!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 2, size: 2080, elements: !7)
86!7 = !{!8, !10}
87!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 2, baseType: !9, size: 32)
88!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
89!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 2, baseType: !11, size: 2048, offset: 32)
90!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 2048, elements: !13)
91!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !1, line: 1, baseType: !9)
92!13 = !{!14, !14, !14}
93!14 = !DISubrange(count: 4)
94!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 512, elements: !16)
95!16 = !{!14, !14}
96!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !18)
97!18 = !{!14}
98!19 = !{i32 2, !"Dwarf Version", i32 4}
99!20 = !{i32 2, !"Debug Info Version", i32 3}
100!21 = !{i32 1, !"wchar_size", i32 4}
101!22 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
102!23 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 5, type: !24, scopeLine: 5, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !26)
103!24 = !DISubroutineType(types: !25)
104!25 = !{!9, !4}
105!26 = !{!27}
106!27 = !DILocalVariable(name: "arg", arg: 1, scope: !23, file: !1, line: 5, type: !4)
107!28 = !DILocation(line: 0, scope: !23)
108!29 = !DILocation(line: 6, column: 20, scope: !23)
109!30 = !DILocation(line: 6, column: 10, scope: !23)
110!31 = !DILocation(line: 6, column: 3, scope: !23)
111