| ; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s |
| ; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s |
| ; Source code: |
| ; struct t1 { |
| ; int c; |
| ; }; |
| ; struct s1 { |
| ; struct t1 b; |
| ; }; |
| ; struct r1 { |
| ; struct s1 a; |
| ; }; |
| ; #define _(x) __builtin_preserve_access_index(x) |
| ; void test1(void *p1, void *p2, void *p3); |
| ; void test(struct r1 *arg) { |
| ; struct s1 *ps = _(&arg->a); |
| ; struct t1 *pt = _(&arg->a.b); |
| ; int *pi = _(&arg->a.b.c); |
| ; test1(ps, pt, pi); |
| ; } |
| ; Compilation flag: |
| ; clang -target bpf -O2 -g -S -emit-llvm test.c |
| |
| %struct.r1 = type { %struct.s1 } |
| %struct.s1 = type { %struct.t1 } |
| %struct.t1 = type { i32 } |
| |
| ; Function Attrs: nounwind |
| define dso_local void @test(%struct.r1* %arg) local_unnamed_addr #0 !dbg !7 { |
| entry: |
| call void @llvm.dbg.value(metadata %struct.r1* %arg, metadata !22, metadata !DIExpression()), !dbg !29 |
| %0 = tail call %struct.s1* @llvm.preserve.struct.access.index.p0s_struct.s1s.p0s_struct.r1s(%struct.r1* %arg, i32 0, i32 0), !dbg !30, !llvm.preserve.access.index !11 |
| call void @llvm.dbg.value(metadata %struct.s1* %0, metadata !23, metadata !DIExpression()), !dbg !29 |
| %1 = tail call %struct.t1* @llvm.preserve.struct.access.index.p0s_struct.t1s.p0s_struct.s1s(%struct.s1* %0, i32 0, i32 0), !dbg !31, !llvm.preserve.access.index !14 |
| call void @llvm.dbg.value(metadata %struct.t1* %1, metadata !25, metadata !DIExpression()), !dbg !29 |
| %2 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.t1s(%struct.t1* %1, i32 0, i32 0), !dbg !32, !llvm.preserve.access.index !17 |
| call void @llvm.dbg.value(metadata i32* %2, metadata !27, metadata !DIExpression()), !dbg !29 |
| %3 = bitcast %struct.s1* %0 to i8*, !dbg !33 |
| %4 = bitcast %struct.t1* %1 to i8*, !dbg !34 |
| %5 = bitcast i32* %2 to i8*, !dbg !35 |
| tail call void @test1(i8* %3, i8* %4, i8* %5) #4, !dbg !36 |
| ret void, !dbg !37 |
| } |
| |
| ; CHECK: .long 1 # BTF_KIND_STRUCT(id = 2) |
| |
| ; CHECK: .ascii "r1" # string offset=1 |
| ; CHECK: .ascii ".text" # string offset=29 |
| ; CHECK: .ascii "0:0" # string offset=72 |
| ; CHECK: .ascii "0:0:0" # string offset=76 |
| ; CHECK: .ascii "0:0:0:0" # string offset=82 |
| |
| ; CHECK: .long 16 # FieldReloc |
| ; CHECK-NEXT: .long 29 # Field reloc section string offset=29 |
| ; CHECK-NEXT: .long 3 |
| ; CHECK_NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK_NEXT: .long 2 |
| ; CHECK_NEXT: .long 72 |
| ; CHECK_NEXT: .long 0 |
| ; CHECK_NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK_NEXT: .long 2 |
| ; CHECK_NEXT: .long 76 |
| ; CHECK_NEXT: .long 0 |
| ; CHECK_NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK_NEXT: .long 2 |
| ; CHECK_NEXT: .long 82 |
| ; CHECK_NEXT: .long 0 |
| |
| ; Function Attrs: nounwind readnone |
| declare %struct.s1* @llvm.preserve.struct.access.index.p0s_struct.s1s.p0s_struct.r1s(%struct.r1*, i32, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare %struct.t1* @llvm.preserve.struct.access.index.p0s_struct.t1s.p0s_struct.s1s(%struct.s1*, i32, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.t1s(%struct.t1*, i32, i32) #1 |
| |
| declare dso_local void @test1(i8*, i8*, i8*) local_unnamed_addr #2 |
| |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #3 |
| |
| 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" } |
| attributes #1 = { nounwind readnone } |
| 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" } |
| attributes #3 = { nounwind readnone speculatable willreturn } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !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) |
| !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 42b3328a2368b38fba6bdb0c616fe6c5520e3bc5)"} |
| !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) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null, !10} |
| !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64) |
| !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "r1", file: !1, line: 7, size: 32, elements: !12) |
| !12 = !{!13} |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !11, file: !1, line: 8, baseType: !14, size: 32) |
| !14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 4, size: 32, elements: !15) |
| !15 = !{!16} |
| !16 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !14, file: !1, line: 5, baseType: !17, size: 32) |
| !17 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !1, line: 1, size: 32, elements: !18) |
| !18 = !{!19} |
| !19 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !17, file: !1, line: 2, baseType: !20, size: 32) |
| !20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !21 = !{!22, !23, !25, !27} |
| !22 = !DILocalVariable(name: "arg", arg: 1, scope: !7, file: !1, line: 12, type: !10) |
| !23 = !DILocalVariable(name: "ps", scope: !7, file: !1, line: 13, type: !24) |
| !24 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) |
| !25 = !DILocalVariable(name: "pt", scope: !7, file: !1, line: 14, type: !26) |
| !26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64) |
| !27 = !DILocalVariable(name: "pi", scope: !7, file: !1, line: 15, type: !28) |
| !28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64) |
| !29 = !DILocation(line: 0, scope: !7) |
| !30 = !DILocation(line: 13, column: 19, scope: !7) |
| !31 = !DILocation(line: 14, column: 19, scope: !7) |
| !32 = !DILocation(line: 15, column: 13, scope: !7) |
| !33 = !DILocation(line: 16, column: 9, scope: !7) |
| !34 = !DILocation(line: 16, column: 13, scope: !7) |
| !35 = !DILocation(line: 16, column: 17, scope: !7) |
| !36 = !DILocation(line: 16, column: 3, scope: !7) |
| !37 = !DILocation(line: 17, column: 1, scope: !7) |
