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(ptr %arg) local_unnamed_addr #0 !dbg !23 { 21entry: 22 call void @llvm.dbg.value(metadata ptr %arg, metadata !27, metadata !DIExpression()), !dbg !28 23 %0 = tail call ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr elementtype(%struct.v3) %arg, i32 0, i32 1), !dbg !29, !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 !29, !llvm.preserve.access.index !6 25 %2 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x [4 x [4 x i32]]]) %1, i32 1, i32 2), !dbg !29, !llvm.preserve.access.index !11 26 %3 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x [4 x i32]]) %2, i32 1, i32 3), !dbg !29, !llvm.preserve.access.index !15 27 %4 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([4 x i32]) %3, i32 1, i32 2), !dbg !29, !llvm.preserve.access.index !17 28 %call = tail call i32 @get_value(ptr %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(ptr) local_unnamed_addr #1 51 52; Function Attrs: nounwind readnone 53declare ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr, i32, i32) #2 54 55; Function Attrs: nounwind readnone 56declare ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr, i32, i32) #2 57 58; Function Attrs: nounwind readnone 59declare ptr @llvm.preserve.array.access.index.p0.p0(ptr, i32, i32) #2 60 61; Function Attrs: nounwind readnone 62 63; Function Attrs: nounwind readnone 64 65; Function Attrs: nounwind readnone speculatable willreturn 66declare void @llvm.dbg.value(metadata, metadata, metadata) #3 67 68attributes #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" } 69attributes #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" } 70attributes #2 = { nounwind readnone } 71attributes #3 = { nounwind readnone speculatable willreturn } 72attributes #4 = { nounwind } 73 74!llvm.dbg.cu = !{!0} 75!llvm.module.flags = !{!19, !20, !21} 76!llvm.ident = !{!22} 77 78!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) 79!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast") 80!2 = !{} 81!3 = !{!4, !11, !15, !17} 82!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64) 83!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 2, baseType: !6) 84!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 2, size: 2080, elements: !7) 85!7 = !{!8, !10} 86!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 2, baseType: !9, size: 32) 87!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 88!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 2, baseType: !11, size: 2048, offset: 32) 89!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 2048, elements: !13) 90!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__int", file: !1, line: 1, baseType: !9) 91!13 = !{!14, !14, !14} 92!14 = !DISubrange(count: 4) 93!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 512, elements: !16) 94!16 = !{!14, !14} 95!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !18) 96!18 = !{!14} 97!19 = !{i32 2, !"Dwarf Version", i32 4} 98!20 = !{i32 2, !"Debug Info Version", i32 3} 99!21 = !{i32 1, !"wchar_size", i32 4} 100!22 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"} 101!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) 102!24 = !DISubroutineType(types: !25) 103!25 = !{!9, !4} 104!26 = !{!27} 105!27 = !DILocalVariable(name: "arg", arg: 1, scope: !23, file: !1, line: 5, type: !4) 106!28 = !DILocation(line: 0, scope: !23) 107!29 = !DILocation(line: 6, column: 20, scope: !23) 108!30 = !DILocation(line: 6, column: 10, scope: !23) 109!31 = !DILocation(line: 6, column: 3, scope: !23) 110