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
4 ; typedef struct s1 { int a1[10][10]; } __s1;
5 ; union u1 { int b1; __s1 b2; };
6 ; enum { FIELD_BYTE_SIZE = 1, };
7 ; int test(union u1 *arg) {
8 ; unsigned r1 = __builtin_preserve_field_info(arg->b2.a1[5], FIELD_BYTE_SIZE);
9 ; unsigned r2 = __builtin_preserve_field_info(arg->b2.a1[5][5], FIELD_BYTE_SIZE);
14 ; clang -target bpf -O2 -g -S -emit-llvm test.c
16 %union.u1 = type { %struct.s1 }
17 %struct.s1 = type { [10 x [10 x i32]] }
19 ; Function Attrs: nounwind readnone
20 define dso_local i32 @test(%union.u1* %arg) local_unnamed_addr #0 !dbg !18 {
22 call void @llvm.dbg.value(metadata %union.u1* %arg, metadata !31, metadata !DIExpression()), !dbg !34
23 %0 = tail call %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1* %arg, i32 1), !dbg !35, !llvm.preserve.access.index !22
24 %b2 = getelementptr inbounds %union.u1, %union.u1* %0, i64 0, i32 0, !dbg !35
25 %1 = tail call [10 x [10 x i32]]* @llvm.preserve.struct.access.index.p0a10a10i32.p0s_struct.s1s(%struct.s1* %b2, i32 0, i32 0), !dbg !36, !llvm.preserve.access.index !27
26 %2 = tail call [10 x i32]* @llvm.preserve.array.access.index.p0a10i32.p0a10a10i32([10 x [10 x i32]]* %1, i32 1, i32 5), !dbg !37, !llvm.preserve.access.index !8
27 %3 = tail call i32 @llvm.bpf.preserve.field.info.p0a10i32([10 x i32]* %2, i64 1), !dbg !38
28 call void @llvm.dbg.value(metadata i32 %3, metadata !32, metadata !DIExpression()), !dbg !34
29 %4 = tail call i32* @llvm.preserve.array.access.index.p0i32.p0a10i32([10 x i32]* %2, i32 1, i32 5), !dbg !39, !llvm.preserve.access.index !12
30 %5 = tail call i32 @llvm.bpf.preserve.field.info.p0i32(i32* %4, i64 1), !dbg !40
31 call void @llvm.dbg.value(metadata i32 %5, metadata !33, metadata !DIExpression()), !dbg !34
32 %add = add i32 %5, %3, !dbg !41
33 ret i32 %add, !dbg !42
41 ; CHECK: .long 1 # BTF_KIND_UNION(id = 2)
42 ; CHECK: .ascii "u1" # string offset=1
43 ; CHECK: .ascii ".text" # string offset=54
44 ; CHECK: .ascii "0:1:0:5" # string offset=60
45 ; CHECK: .ascii "0:1:0:5:5" # string offset=105
47 ; CHECK: .long 16 # FieldReloc
48 ; CHECK-NEXT: .long 54 # Field reloc section string offset=54
50 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
52 ; CHECK-NEXT: .long 60
54 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
56 ; CHECK-NEXT: .long 105
59 ; Function Attrs: nounwind readnone
60 declare %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1*, i32) #1
62 ; Function Attrs: nounwind readnone
63 declare [10 x [10 x i32]]* @llvm.preserve.struct.access.index.p0a10a10i32.p0s_struct.s1s(%struct.s1*, i32, i32) #1
65 ; Function Attrs: nounwind readnone
66 declare [10 x i32]* @llvm.preserve.array.access.index.p0a10i32.p0a10a10i32([10 x [10 x i32]]*, i32, i32) #1
68 ; Function Attrs: nounwind readnone
69 declare i32 @llvm.bpf.preserve.field.info.p0a10i32([10 x i32]*, i64) #1
71 ; Function Attrs: nounwind readnone
72 declare i32* @llvm.preserve.array.access.index.p0i32.p0a10i32([10 x i32]*, i32, i32) #1
74 ; Function Attrs: nounwind readnone
75 declare i32 @llvm.bpf.preserve.field.info.p0i32(i32*, i64) #1
77 ; Function Attrs: nounwind readnone speculatable willreturn
78 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
80 attributes #0 = { nounwind readnone "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" }
81 attributes #1 = { nounwind readnone }
82 attributes #2 = { nounwind readnone speculatable willreturn }
85 !llvm.module.flags = !{!14, !15, !16}
88 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git c1e02f16f1105ffaf1c35ee8bc38b7d6db5c6ea9)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !7, nameTableKind: None)
89 !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core")
91 !3 = !DICompositeType(tag: DW_TAG_enumeration_type, file: !1, line: 3, baseType: !4, size: 32, elements: !5)
92 !4 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
94 !6 = !DIEnumerator(name: "FIELD_BYTE_SIZE", value: 1, isUnsigned: true)
96 !8 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 3200, elements: !10)
97 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
99 !11 = !DISubrange(count: 10)
100 !12 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 320, elements: !13)
102 !14 = !{i32 2, !"Dwarf Version", i32 4}
103 !15 = !{i32 2, !"Debug Info Version", i32 3}
104 !16 = !{i32 1, !"wchar_size", i32 4}
105 !17 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git c1e02f16f1105ffaf1c35ee8bc38b7d6db5c6ea9)"}
106 !18 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 4, type: !19, scopeLine: 4, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !30)
107 !19 = !DISubroutineType(types: !20)
109 !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64)
110 !22 = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u1", file: !1, line: 2, size: 3200, elements: !23)
112 !24 = !DIDerivedType(tag: DW_TAG_member, name: "b1", scope: !22, file: !1, line: 2, baseType: !9, size: 32)
113 !25 = !DIDerivedType(tag: DW_TAG_member, name: "b2", scope: !22, file: !1, line: 2, baseType: !26, size: 3200)
114 !26 = !DIDerivedType(tag: DW_TAG_typedef, name: "__s1", file: !1, line: 1, baseType: !27)
115 !27 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 1, size: 3200, elements: !28)
117 !29 = !DIDerivedType(tag: DW_TAG_member, name: "a1", scope: !27, file: !1, line: 1, baseType: !8, size: 3200)
118 !30 = !{!31, !32, !33}
119 !31 = !DILocalVariable(name: "arg", arg: 1, scope: !18, file: !1, line: 4, type: !21)
120 !32 = !DILocalVariable(name: "r1", scope: !18, file: !1, line: 5, type: !4)
121 !33 = !DILocalVariable(name: "r2", scope: !18, file: !1, line: 6, type: !4)
122 !34 = !DILocation(line: 0, scope: !18)
123 !35 = !DILocation(line: 5, column: 52, scope: !18)
124 !36 = !DILocation(line: 5, column: 55, scope: !18)
125 !37 = !DILocation(line: 5, column: 47, scope: !18)
126 !38 = !DILocation(line: 5, column: 17, scope: !18)
127 !39 = !DILocation(line: 6, column: 47, scope: !18)
128 !40 = !DILocation(line: 6, column: 17, scope: !18)
129 !41 = !DILocation(line: 8, column: 13, scope: !18)
130 !42 = !DILocation(line: 8, column: 3, scope: !18)