1; RUN: opt -O2 %s | llvm-dis > %t1
2; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
3; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
4; Source code:
5;   typedef int __int;
6;   typedef struct v3 { int a; __int b[4][4][4]; } __v3;
7;   #define _(x) (__builtin_preserve_access_index(x))
8;   int get_value(const int *arg);
9;   int test(__v3 *arg) {
10;     return get_value(_(&arg[1].b[2][3][2]));
11;   }
12; Compilation flag:
13;   clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
14
15target triple = "bpf"
16
17%struct.v3 = type { i32, [4 x [4 x [4 x i32]]] }
18
19; Function Attrs: nounwind
20define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !23 {
21entry:
22  call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !27, metadata !DIExpression()), !dbg !28
23  %0 = tail call %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3* elementtype(%struct.v3) %arg, i32 0, i32 1), !dbg !29, !llvm.preserve.access.index !4
24  %1 = tail call [4 x [4 x [4 x i32]]]* @llvm.preserve.struct.access.index.p0a4a4a4i32.p0s_struct.v3s(%struct.v3* elementtype(%struct.v3) %0, i32 1, i32 1), !dbg !29, !llvm.preserve.access.index !6
25  %2 = tail call [4 x [4 x i32]]* @llvm.preserve.array.access.index.p0a4a4i32.p0a4a4a4i32([4 x [4 x [4 x i32]]]* elementtype([4 x [4 x [4 x i32]]]) %1, i32 1, i32 2), !dbg !29, !llvm.preserve.access.index !11
26  %3 = tail call [4 x i32]* @llvm.preserve.array.access.index.p0a4i32.p0a4a4i32([4 x [4 x i32]]* elementtype([4 x [4 x i32]]) %2, i32 1, i32 3), !dbg !29, !llvm.preserve.access.index !15
27  %4 = tail call i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]* elementtype([4 x i32]) %3, i32 1, i32 2), !dbg !29, !llvm.preserve.access.index !17
28  %call = tail call i32 @get_value(i32* %4) #4, !dbg !30
29  ret i32 %call, !dbg !31
30}
31
32; CHECK:             r2 = 448
33; CHECK:             r1 += r2
34; CHECK:             call get_value
35
36; CHECK:             .long   6                       # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
37
38; CHECK:             .ascii  "v3"                    # string offset=6
39; CHECK:             .ascii  ".text"                 # string offset=52
40; CHECK:             .ascii  "1:1:2:3:2"             # string offset=58
41
42; CHECK:             .long   16                      # FieldReloc
43; CHECK-NEXT:        .long   52                      # Field reloc section string offset=52
44; CHECK-NEXT:        .long   1
45; CHECK-NEXT:        .long   .Ltmp{{[0-9]+}}
46; CHECK-NEXT:        .long   [[TID1]]
47; CHECK-NEXT:        .long   58
48; CHECK-NEXT:        .long   0
49
50declare dso_local i32 @get_value(i32*) local_unnamed_addr #1
51
52; Function Attrs: nounwind readnone
53declare %struct.v3* @llvm.preserve.array.access.index.p0s_struct.v3s.p0s_struct.v3s(%struct.v3*, i32, i32) #2
54
55; Function Attrs: nounwind readnone
56declare [4 x [4 x [4 x i32]]]* @llvm.preserve.struct.access.index.p0a4a4a4i32.p0s_struct.v3s(%struct.v3*, i32, i32) #2
57
58; Function Attrs: nounwind readnone
59declare [4 x [4 x i32]]* @llvm.preserve.array.access.index.p0a4a4i32.p0a4a4a4i32([4 x [4 x [4 x i32]]]*, i32, i32) #2
60
61; Function Attrs: nounwind readnone
62declare [4 x i32]* @llvm.preserve.array.access.index.p0a4i32.p0a4a4i32([4 x [4 x i32]]*, i32, i32) #2
63
64; Function Attrs: nounwind readnone
65declare i32* @llvm.preserve.array.access.index.p0i32.p0a4i32([4 x i32]*, i32, i32) #2
66
67; Function Attrs: nounwind readnone speculatable willreturn
68declare void @llvm.dbg.value(metadata, metadata, metadata) #3
69
70attributes #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" }
71attributes #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" }
72attributes #2 = { nounwind readnone }
73attributes #3 = { nounwind readnone speculatable willreturn }
74attributes #4 = { nounwind }
75
76!llvm.dbg.cu = !{!0}
77!llvm.module.flags = !{!19, !20, !21}
78!llvm.ident = !{!22}
79
80!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)
81!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
82!2 = !{}
83!3 = !{!4, !11, !15, !17}
84!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
85!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 2, baseType: !6)
86!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 2, size: 2080, elements: !7)
87!7 = !{!8, !10}
88!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 2, baseType: !9, size: 32)
89!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
90!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 2, baseType: !11, size: 2048, offset: 32)
91!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 2048, elements: !13)
92!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !1, line: 1, baseType: !9)
93!13 = !{!14, !14, !14}
94!14 = !DISubrange(count: 4)
95!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 512, elements: !16)
96!16 = !{!14, !14}
97!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !18)
98!18 = !{!14}
99!19 = !{i32 2, !"Dwarf Version", i32 4}
100!20 = !{i32 2, !"Debug Info Version", i32 3}
101!21 = !{i32 1, !"wchar_size", i32 4}
102!22 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
103!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)
104!24 = !DISubroutineType(types: !25)
105!25 = !{!9, !4}
106!26 = !{!27}
107!27 = !DILocalVariable(name: "arg", arg: 1, scope: !23, file: !1, line: 5, type: !4)
108!28 = !DILocation(line: 0, scope: !23)
109!29 = !DILocation(line: 6, column: 20, scope: !23)
110!30 = !DILocation(line: 6, column: 10, scope: !23)
111!31 = !DILocation(line: 6, column: 3, scope: !23)
112