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1; RUN: opt -O2 %s | llvm-dis > %t12; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s3; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s4; Source code:5; typedef struct v3 { int a; int b; } __v3;6; #define _(x) (__builtin_preserve_access_index(x))7; int get_value(const int *arg);8; __v3 g[4][5] __attribute__((section("stats")));9; int test() {10; return get_value(_(&g[1][2].b));11; }12; Compilation flag:13; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c14 15target triple = "bpf"16 17%struct.v3 = type { i32, i32 }18 19@g = dso_local global [4 x [5 x %struct.v3]] zeroinitializer, section "stats", align 4, !dbg !020 21; Function Attrs: nounwind22define dso_local i32 @test() local_unnamed_addr !dbg !23 {23entry:24 %0 = tail call ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr elementtype([4 x [5 x %struct.v3]]) nonnull @g, i32 1, i32 1), !dbg !26, !llvm.preserve.access.index !625 %1 = tail call ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr elementtype([5 x %struct.v3]) %0, i32 1, i32 2), !dbg !26, !llvm.preserve.access.index !1626 %2 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr elementtype(%struct.v3) %1, i32 1, i32 1), !dbg !26, !llvm.preserve.access.index !827 %call = tail call i32 @get_value(ptr %2), !dbg !2728 ret i32 %call, !dbg !2829}30 31; CHECK: r2 = 6032; CHECK: r1 = g ll33; CHECK: r1 += r234; CHECK: call get_value35 36; CHECK: .long 16 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])37 38; CHECK: .ascii ".text" # string offset=1039; CHECK: .ascii "v3" # string offset=1640; CHECK: .ascii "7:1" # string offset=2341 42; CHECK: .long 16 # FieldReloc43; CHECK-NEXT: .long 10 # Field reloc section string offset=1044; CHECK-NEXT: .long 145; CHECK-NEXT: .long .Ltmp{{[0-9]+}}46; CHECK-NEXT: .long [[TID1]]47; CHECK-NEXT: .long 2348; CHECK-NEXT: .long 049 50declare dso_local i32 @get_value(ptr) local_unnamed_addr51 52; Function Attrs: nounwind readnone53declare ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr, i32, i32)54 55; Function Attrs: nounwind readnone56 57; Function Attrs: nounwind readnone58declare ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr, i32, i32)59 60!llvm.dbg.cu = !{!2}61!llvm.module.flags = !{!19, !20, !21}62!llvm.ident = !{!22}63 64!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())65!1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 4, type: !6, isLocal: false, isDefinition: true)66!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !18, nameTableKind: None)67!3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")68!4 = !{}69!5 = !{!6, !16}70!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 1280, elements: !13)71!7 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !3, line: 1, baseType: !8)72!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !3, line: 1, size: 64, elements: !9)73!9 = !{!10, !12}74!10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !3, line: 1, baseType: !11, size: 32)75!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)76!12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !3, line: 1, baseType: !11, size: 32, offset: 32)77!13 = !{!14, !15}78!14 = !DISubrange(count: 4)79!15 = !DISubrange(count: 5)80!16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 320, elements: !17)81!17 = !{!15}82!18 = !{!0}83!19 = !{i32 2, !"Dwarf Version", i32 4}84!20 = !{i32 2, !"Debug Info Version", i32 3}85!21 = !{i32 1, !"wchar_size", i32 4}86!22 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}87!23 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 5, type: !24, scopeLine: 5, isDefinition: true, isOptimized: true, unit: !2, retainedNodes: !4)88!24 = !DISubroutineType(types: !25)89!25 = !{!11}90!26 = !DILocation(line: 6, column: 20, scope: !23)91!27 = !DILocation(line: 6, column: 10, scope: !23)92!28 = !DILocation(line: 6, column: 3, scope: !23)93