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
6 ; typedef struct v3 { int a; __int b[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]));
13 ; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
17 %struct.v3 = type { i32, [4 x [4 x i32]] }
19 ; Function Attrs: nounwind
20 define dso_local i32 @test(ptr %arg) local_unnamed_addr #0 !dbg !21 {
22 call void @llvm.dbg.value(metadata ptr %arg, metadata !25, metadata !DIExpression()), !dbg !26
23 %0 = tail call ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr elementtype(%struct.v3) %arg, i32 0, i32 1), !dbg !27, !llvm.preserve.access.index !4
24 %1 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr elementtype(%struct.v3) %0, i32 1, i32 1), !dbg !27, !llvm.preserve.access.index !6
25 %2 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x [4 x i32]]) %1, i32 1, i32 2), !dbg !27, !llvm.preserve.access.index !11
26 %3 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x i32]) %2, i32 1, i32 3), !dbg !27, !llvm.preserve.access.index !15
27 %call = tail call i32 @get_value(ptr %3) #4, !dbg !28
28 ret i32 %call, !dbg !29
33 ; CHECK: call get_value
35 ; CHECK: .long 6 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
37 ; CHECK: .ascii "v3" # string offset=6
38 ; CHECK: .ascii ".text" # string offset=52
39 ; CHECK: .ascii "1:1:2:3" # string offset=58
41 ; CHECK: .long 16 # FieldReloc
42 ; CHECK-NEXT: .long 52 # Field reloc section string offset=52
44 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
45 ; CHECK-NEXT: .long [[TID1]]
46 ; CHECK-NEXT: .long 58
49 declare dso_local i32 @get_value(ptr) local_unnamed_addr #1
51 ; Function Attrs: nounwind readnone
52 declare ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr, i32, i32) #2
54 ; Function Attrs: nounwind readnone
55 declare ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr, i32, i32) #2
57 ; Function Attrs: nounwind readnone
58 declare ptr @llvm.preserve.array.access.index.p0.p0(ptr, i32, i32) #2
60 ; Function Attrs: nounwind readnone
62 ; Function Attrs: nounwind readnone speculatable willreturn
63 declare void @llvm.dbg.value(metadata, metadata, metadata) #3
65 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" }
66 attributes #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" }
67 attributes #2 = { nounwind readnone }
68 attributes #3 = { nounwind readnone speculatable willreturn }
69 attributes #4 = { nounwind }
72 !llvm.module.flags = !{!17, !18, !19}
75 !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)
76 !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
79 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
80 !5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 2, baseType: !6)
81 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 2, size: 544, elements: !7)
83 !8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 2, baseType: !9, size: 32)
84 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
85 !10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 2, baseType: !11, size: 512, offset: 32)
86 !11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 512, elements: !13)
87 !12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !1, line: 1, baseType: !9)
89 !14 = !DISubrange(count: 4)
90 !15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !16)
92 !17 = !{i32 2, !"Dwarf Version", i32 4}
93 !18 = !{i32 2, !"Debug Info Version", i32 3}
94 !19 = !{i32 1, !"wchar_size", i32 4}
95 !20 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
96 !21 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 5, type: !22, scopeLine: 5, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !24)
97 !22 = !DISubroutineType(types: !23)
100 !25 = !DILocalVariable(name: "arg", arg: 1, scope: !21, file: !1, line: 5, type: !4)
101 !26 = !DILocation(line: 0, scope: !21)
102 !27 = !DILocation(line: 6, column: 20, scope: !21)
103 !28 = !DILocation(line: 6, column: 10, scope: !21)
104 !29 = !DILocation(line: 6, column: 3, scope: !21)