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]; } __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])); 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 i32]] } 18 19; Function Attrs: nounwind 20define dso_local i32 @test(ptr %arg) local_unnamed_addr #0 !dbg !21 { 21entry: 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 29} 30 31; CHECK: r2 = 116 32; CHECK: r1 += r2 33; CHECK: call get_value 34 35; CHECK: .long 6 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]]) 36 37; CHECK: .ascii "v3" # string offset=6 38; CHECK: .ascii ".text" # string offset=52 39; CHECK: .ascii "1:1:2:3" # string offset=58 40 41; CHECK: .long 16 # FieldReloc 42; CHECK-NEXT: .long 52 # Field reloc section string offset=52 43; CHECK-NEXT: .long 1 44; CHECK-NEXT: .long .Ltmp{{[0-9]+}} 45; CHECK-NEXT: .long [[TID1]] 46; CHECK-NEXT: .long 58 47; CHECK-NEXT: .long 0 48 49declare dso_local i32 @get_value(ptr) local_unnamed_addr #1 50 51; Function Attrs: nounwind readnone 52declare ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr, i32, i32) #2 53 54; Function Attrs: nounwind readnone 55declare ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr, i32, i32) #2 56 57; Function Attrs: nounwind readnone 58declare ptr @llvm.preserve.array.access.index.p0.p0(ptr, i32, i32) #2 59 60; Function Attrs: nounwind readnone 61 62; Function Attrs: nounwind readnone speculatable willreturn 63declare void @llvm.dbg.value(metadata, metadata, metadata) #3 64 65attributes #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" } 66attributes #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" } 67attributes #2 = { nounwind readnone } 68attributes #3 = { nounwind readnone speculatable willreturn } 69attributes #4 = { nounwind } 70 71!llvm.dbg.cu = !{!0} 72!llvm.module.flags = !{!17, !18, !19} 73!llvm.ident = !{!20} 74 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") 77!2 = !{} 78!3 = !{!4, !11, !15} 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) 82!7 = !{!8, !10} 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) 88!13 = !{!14, !14} 89!14 = !DISubrange(count: 4) 90!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !16) 91!16 = !{!14} 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) 98!23 = !{!9, !4} 99!24 = !{!25} 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) 105