134 lines
7.2 KiB
LLVM
134 lines
7.2 KiB
LLVM
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; RUN: opt -O2 %s | llvm-dis > %t1
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; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
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; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
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; Source code:
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; struct t1 {
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; int c;
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; };
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; struct s1 {
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; struct t1 b;
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; };
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; struct r1 {
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; struct s1 a;
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; };
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; #define _(x) __builtin_preserve_access_index(x)
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; void test1(void *p1, void *p2, void *p3);
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; void test(struct r1 *arg) {
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; struct s1 *ps = _(&arg->a);
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; struct t1 *pt = _(&arg->a.b);
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; int *pi = _(&arg->a.b.c);
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; test1(ps, pt, pi);
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; }
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; Compilation flag:
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; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
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target triple = "bpf"
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%struct.r1 = type { %struct.s1 }
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%struct.s1 = type { %struct.t1 }
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%struct.t1 = type { i32 }
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; Function Attrs: nounwind
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define dso_local void @test(%struct.r1* %arg) local_unnamed_addr #0 !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata %struct.r1* %arg, metadata !22, metadata !DIExpression()), !dbg !29
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%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
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call void @llvm.dbg.value(metadata %struct.s1* %0, metadata !23, metadata !DIExpression()), !dbg !29
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%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
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call void @llvm.dbg.value(metadata %struct.t1* %1, metadata !25, metadata !DIExpression()), !dbg !29
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%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
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call void @llvm.dbg.value(metadata i32* %2, metadata !27, metadata !DIExpression()), !dbg !29
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%3 = bitcast %struct.s1* %0 to i8*, !dbg !33
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%4 = bitcast %struct.t1* %1 to i8*, !dbg !34
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%5 = bitcast i32* %2 to i8*, !dbg !35
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tail call void @test1(i8* %3, i8* %4, i8* %5) #4, !dbg !36
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ret void, !dbg !37
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}
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; CHECK: .long 1 # BTF_KIND_STRUCT(id = 2)
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; CHECK: .ascii "r1" # string offset=1
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; CHECK: .ascii ".text" # string offset=29
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; CHECK: .ascii "0:0" # string offset=72
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; CHECK: .ascii "0:0:0" # string offset=76
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; CHECK: .ascii "0:0:0:0" # string offset=82
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; CHECK: .long 16 # FieldReloc
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; CHECK-NEXT: .long 29 # Field reloc section string offset=29
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; CHECK-NEXT: .long 3
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; CHECK_NEXT: .long .Ltmp{{[0-9]+}}
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; CHECK_NEXT: .long 2
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; CHECK_NEXT: .long 72
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; CHECK_NEXT: .long 0
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; CHECK_NEXT: .long .Ltmp{{[0-9]+}}
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; CHECK_NEXT: .long 2
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; CHECK_NEXT: .long 76
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; CHECK_NEXT: .long 0
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; CHECK_NEXT: .long .Ltmp{{[0-9]+}}
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; CHECK_NEXT: .long 2
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; CHECK_NEXT: .long 82
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; CHECK_NEXT: .long 0
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; Function Attrs: nounwind readnone
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declare %struct.s1* @llvm.preserve.struct.access.index.p0s_struct.s1s.p0s_struct.r1s(%struct.r1*, i32, i32) #1
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; Function Attrs: nounwind readnone
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declare %struct.t1* @llvm.preserve.struct.access.index.p0s_struct.t1s.p0s_struct.s1s(%struct.s1*, i32, i32) #1
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; Function Attrs: nounwind readnone
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declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.t1s(%struct.t1*, i32, i32) #1
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declare dso_local void @test1(i8*, i8*, i8*) local_unnamed_addr #2
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata) #3
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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" }
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attributes #1 = { nounwind readnone }
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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" }
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attributes #3 = { nounwind readnone speculatable willreturn }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!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)
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!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 42b3328a2368b38fba6bdb0c616fe6c5520e3bc5)"}
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!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)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
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!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "r1", file: !1, line: 7, size: 32, elements: !12)
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!12 = !{!13}
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!13 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !11, file: !1, line: 8, baseType: !14, size: 32)
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!14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 4, size: 32, elements: !15)
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!15 = !{!16}
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!16 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !14, file: !1, line: 5, baseType: !17, size: 32)
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!17 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !1, line: 1, size: 32, elements: !18)
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!18 = !{!19}
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!19 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !17, file: !1, line: 2, baseType: !20, size: 32)
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!20 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!21 = !{!22, !23, !25, !27}
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!22 = !DILocalVariable(name: "arg", arg: 1, scope: !7, file: !1, line: 12, type: !10)
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!23 = !DILocalVariable(name: "ps", scope: !7, file: !1, line: 13, type: !24)
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!24 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64)
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!25 = !DILocalVariable(name: "pt", scope: !7, file: !1, line: 14, type: !26)
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!26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64)
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!27 = !DILocalVariable(name: "pi", scope: !7, file: !1, line: 15, type: !28)
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64)
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!29 = !DILocation(line: 0, scope: !7)
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!30 = !DILocation(line: 13, column: 19, scope: !7)
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!31 = !DILocation(line: 14, column: 19, scope: !7)
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!32 = !DILocation(line: 15, column: 13, scope: !7)
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!33 = !DILocation(line: 16, column: 9, scope: !7)
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!34 = !DILocation(line: 16, column: 13, scope: !7)
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!35 = !DILocation(line: 16, column: 17, scope: !7)
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!36 = !DILocation(line: 16, column: 3, scope: !7)
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!37 = !DILocation(line: 17, column: 1, scope: !7)
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