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;   struct v1 {int a; int b;};
7;   typedef struct v1 __v1;
8;   typedef __v1 arr[4][4];
9;   struct v3 { char c; int d[100]; };
10;   #define _(x) (__builtin_preserve_access_index(x))
11;   #define cast_to_arr(x) ((arr *)(x))
12;   int get_value(const int *arg);
13;   int test(struct v3 *arg) {
14;     return get_value(_(&cast_to_arr(&arg->d[0])[0][2][3].b));
15;   }
16; Compilation flag:
17;   clang -target bpf -O2 -g -S -emit-llvm test.c
18
19%struct.v3 = type { i8, [100 x i32] }
20%struct.v1 = type { i32, i32 }
21
22; Function Attrs: nounwind
23define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !24 {
24entry:
25  call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !34, metadata !DIExpression()), !dbg !35
26  %0 = tail call [100 x i32]* @llvm.preserve.struct.access.index.p0a100i32.p0s_struct.v3s(%struct.v3* %arg, i32 1, i32 1), !dbg !36, !llvm.preserve.access.index !28
27  %1 = tail call i32* @llvm.preserve.array.access.index.p0i32.p0a100i32([100 x i32]* %0, i32 1, i32 0), !dbg !36, !llvm.preserve.access.index !15
28  %2 = bitcast i32* %1 to [4 x [4 x %struct.v1]]*, !dbg !36
29  %3 = tail call [4 x [4 x %struct.v1]]* @llvm.preserve.array.access.index.p0a4a4s_struct.v1s.p0a4a4s_struct.v1s([4 x [4 x %struct.v1]]* %2, i32 0, i32 0), !dbg !36, !llvm.preserve.access.index !4
30  %4 = tail call [4 x %struct.v1]* @llvm.preserve.array.access.index.p0a4s_struct.v1s.p0a4a4s_struct.v1s([4 x [4 x %struct.v1]]* %3, i32 1, i32 2), !dbg !36, !llvm.preserve.access.index !5
31  %5 = tail call %struct.v1* @llvm.preserve.array.access.index.p0s_struct.v1s.p0a4s_struct.v1s([4 x %struct.v1]* %4, i32 1, i32 3), !dbg !36, !llvm.preserve.access.index !18
32  %6 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v1s(%struct.v1* %5, i32 1, i32 1), !dbg !36, !llvm.preserve.access.index !8
33  %call = tail call i32 @get_value(i32* %6) #4, !dbg !37
34  ret i32 %call, !dbg !38
35}
36
37; CHECK:              r2 = 4
38; CHECK:              r1 += r2
39; CHECK:              r2 = 92
40; CHECK:              r1 += r2
41; CHECK:              call get_value
42
43; CHECK:              .long   1                       # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
44; CHECK:              .long   100                     # BTF_KIND_STRUCT(id = [[TID2:[0-9]+]])
45
46; CHECK:              .ascii  "v3"                    # string offset=1
47; CHECK:              .ascii  ".text"                 # string offset=46
48; CHECK:              .ascii  "0:1:0"                 # string offset=52
49; CHECK:              .ascii  "v1"                    # string offset=100
50; CHECK:              .ascii  "11:1"                  # string offset=107
51
52; CHECK:              .long   16                      # FieldReloc
53; CHECK-NEXT:         .long   46                      # Field reloc section string offset=46
54; CHECK-NEXT:         .long   2
55; CHECK-NEXT:         .long   .Ltmp{{[0-9]+}}
56; CHECK-NEXT:         .long   [[TID1]]
57; CHECK-NEXT:         .long   52
58; CHECK-NEXT:         .long   0
59; CHECK-NEXT:         .long   .Ltmp{{[0-9]+}}
60; CHECK-NEXT:         .long   [[TID2]]
61; CHECK-NEXT:         .long   107
62; CHECK-NEXT:         .long   0
63
64declare dso_local i32 @get_value(i32*) local_unnamed_addr #1
65
66; Function Attrs: nounwind readnone
67declare [100 x i32]* @llvm.preserve.struct.access.index.p0a100i32.p0s_struct.v3s(%struct.v3*, i32, i32) #2
68
69; Function Attrs: nounwind readnone
70declare i32* @llvm.preserve.array.access.index.p0i32.p0a100i32([100 x i32]*, i32, i32) #2
71
72; Function Attrs: nounwind readnone
73declare [4 x [4 x %struct.v1]]* @llvm.preserve.array.access.index.p0a4a4s_struct.v1s.p0a4a4s_struct.v1s([4 x [4 x %struct.v1]]*, i32, i32) #2
74
75; Function Attrs: nounwind readnone
76declare [4 x %struct.v1]* @llvm.preserve.array.access.index.p0a4s_struct.v1s.p0a4a4s_struct.v1s([4 x [4 x %struct.v1]]*, i32, i32) #2
77
78; Function Attrs: nounwind readnone
79declare %struct.v1* @llvm.preserve.array.access.index.p0s_struct.v1s.p0a4s_struct.v1s([4 x %struct.v1]*, i32, i32) #2
80
81; Function Attrs: nounwind readnone
82declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v1s(%struct.v1*, i32, i32) #2
83
84; Function Attrs: nounwind readnone speculatable willreturn
85declare void @llvm.dbg.value(metadata, metadata, metadata) #3
86
87attributes #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" }
88attributes #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" }
89attributes #2 = { nounwind readnone }
90attributes #3 = { nounwind readnone speculatable willreturn }
91attributes #4 = { nounwind }
92
93!llvm.dbg.cu = !{!0}
94!llvm.module.flags = !{!20, !21, !22}
95!llvm.ident = !{!23}
96
97!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)
98!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
99!2 = !{}
100!3 = !{!4, !15, !5, !18}
101!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
102!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "arr", file: !1, line: 3, baseType: !6)
103!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 1024, elements: !13)
104!7 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v1", file: !1, line: 2, baseType: !8)
105!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v1", file: !1, line: 1, size: 64, elements: !9)
106!9 = !{!10, !12}
107!10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !1, line: 1, baseType: !11, size: 32)
108!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
109!12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !1, line: 1, baseType: !11, size: 32, offset: 32)
110!13 = !{!14, !14}
111!14 = !DISubrange(count: 4)
112!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !11, size: 3200, elements: !16)
113!16 = !{!17}
114!17 = !DISubrange(count: 100)
115!18 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 256, elements: !19)
116!19 = !{!14}
117!20 = !{i32 2, !"Dwarf Version", i32 4}
118!21 = !{i32 2, !"Debug Info Version", i32 3}
119!22 = !{i32 1, !"wchar_size", i32 4}
120!23 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
121!24 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 8, type: !25, scopeLine: 8, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !33)
122!25 = !DISubroutineType(types: !26)
123!26 = !{!11, !27}
124!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
125!28 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 4, size: 3232, elements: !29)
126!29 = !{!30, !32}
127!30 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !28, file: !1, line: 4, baseType: !31, size: 8)
128!31 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
129!32 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !28, file: !1, line: 4, baseType: !15, size: 3200, offset: 32)
130!33 = !{!34}
131!34 = !DILocalVariable(name: "arg", arg: 1, scope: !24, file: !1, line: 8, type: !27)
132!35 = !DILocation(line: 0, scope: !24)
133!36 = !DILocation(line: 9, column: 20, scope: !24)
134!37 = !DILocation(line: 9, column: 10, scope: !24)
135!38 = !DILocation(line: 9, column: 3, scope: !24)
136