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
14 ; #define _(x) __builtin_preserve_access_index(x)
15 ; void test1(ptr p1, ptr p2, ptr p3);
16 ; void test(struct r1 *arg) {
17 ; struct s1 *ps = _(&arg->a);
18 ; struct t1 *pt = _(&arg->a.b);
19 ; int *pi = _(&arg->a.b.c);
23 ; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
27 %struct.r1 = type { %struct.s1 }
28 %struct.s1 = type { %struct.t1 }
29 %struct.t1 = type { i32 }
31 ; Function Attrs: nounwind
32 define dso_local void @test(ptr %arg) local_unnamed_addr #0 !dbg !7 {
34 call void @llvm.dbg.value(metadata ptr %arg, metadata !22, metadata !DIExpression()), !dbg !29
35 %0 = tail call ptr @llvm.preserve.struct.access.index.p0.s1s.p0.r1s(ptr elementtype(%struct.r1) %arg, i32 0, i32 0), !dbg !30, !llvm.preserve.access.index !11
36 call void @llvm.dbg.value(metadata ptr %0, metadata !23, metadata !DIExpression()), !dbg !29
37 %1 = tail call ptr @llvm.preserve.struct.access.index.p0.t1s.p0.s1s(ptr elementtype(%struct.s1) %0, i32 0, i32 0), !dbg !31, !llvm.preserve.access.index !14
38 call void @llvm.dbg.value(metadata ptr %1, metadata !25, metadata !DIExpression()), !dbg !29
39 %2 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.t1s(ptr elementtype(%struct.t1) %1, i32 0, i32 0), !dbg !32, !llvm.preserve.access.index !17
40 call void @llvm.dbg.value(metadata ptr %2, metadata !27, metadata !DIExpression()), !dbg !29
41 tail call void @test1(ptr %0, ptr %1, ptr %2) #4, !dbg !36
45 ; CHECK: .long 1 # BTF_KIND_STRUCT(id = 2)
47 ; CHECK: .ascii "r1" # string offset=1
48 ; CHECK: .ascii ".text" # string offset=29
49 ; CHECK: .ascii "0:0" # string offset=72
50 ; CHECK: .ascii "0:0:0" # string offset=76
51 ; CHECK: .ascii "0:0:0:0" # string offset=82
53 ; CHECK: .long 16 # FieldReloc
54 ; CHECK-NEXT: .long 29 # Field reloc section string offset=29
56 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
58 ; CHECK-NEXT: .long 72
60 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
62 ; CHECK-NEXT: .long 76
64 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
66 ; CHECK-NEXT: .long 82
69 ; Function Attrs: nounwind readnone
70 declare ptr @llvm.preserve.struct.access.index.p0.s1s.p0.r1s(ptr, i32, i32) #1
72 ; Function Attrs: nounwind readnone
73 declare ptr @llvm.preserve.struct.access.index.p0.t1s.p0.s1s(ptr, i32, i32) #1
75 ; Function Attrs: nounwind readnone
76 declare ptr @llvm.preserve.struct.access.index.p0.p0.t1s(ptr, i32, i32) #1
78 declare dso_local void @test1(ptr, ptr, ptr) local_unnamed_addr #2
80 ; Function Attrs: nounwind readnone speculatable willreturn
81 declare void @llvm.dbg.value(metadata, metadata, metadata) #3
83 attributes #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" }
84 attributes #1 = { nounwind readnone }
85 attributes #2 = { "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" }
86 attributes #3 = { nounwind readnone speculatable willreturn }
87 attributes #4 = { nounwind }
90 !llvm.module.flags = !{!3, !4, !5}
93 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git 42b3328a2368b38fba6bdb0c616fe6c5520e3bc5)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
94 !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core")
96 !3 = !{i32 2, !"Dwarf Version", i32 4}
97 !4 = !{i32 2, !"Debug Info Version", i32 3}
98 !5 = !{i32 1, !"wchar_size", i32 4}
99 !6 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 42b3328a2368b38fba6bdb0c616fe6c5520e3bc5)"}
100 !7 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 12, type: !8, scopeLine: 12, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !21)
101 !8 = !DISubroutineType(types: !9)
103 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
104 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "r1", file: !1, line: 7, size: 32, elements: !12)
106 !13 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !11, file: !1, line: 8, baseType: !14, size: 32)
107 !14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 4, size: 32, elements: !15)
109 !16 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !14, file: !1, line: 5, baseType: !17, size: 32)
110 !17 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !1, line: 1, size: 32, elements: !18)
112 !19 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !17, file: !1, line: 2, baseType: !20, size: 32)
113 !20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
114 !21 = !{!22, !23, !25, !27}
115 !22 = !DILocalVariable(name: "arg", arg: 1, scope: !7, file: !1, line: 12, type: !10)
116 !23 = !DILocalVariable(name: "ps", scope: !7, file: !1, line: 13, type: !24)
117 !24 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64)
118 !25 = !DILocalVariable(name: "pt", scope: !7, file: !1, line: 14, type: !26)
119 !26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64)
120 !27 = !DILocalVariable(name: "pi", scope: !7, file: !1, line: 15, type: !28)
121 !28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64)
122 !29 = !DILocation(line: 0, scope: !7)
123 !30 = !DILocation(line: 13, column: 19, scope: !7)
124 !31 = !DILocation(line: 14, column: 19, scope: !7)
125 !32 = !DILocation(line: 15, column: 13, scope: !7)
126 !33 = !DILocation(line: 16, column: 9, scope: !7)
127 !34 = !DILocation(line: 16, column: 13, scope: !7)
128 !35 = !DILocation(line: 16, column: 17, scope: !7)
129 !36 = !DILocation(line: 16, column: 3, scope: !7)
130 !37 = !DILocation(line: 17, column: 1, scope: !7)