| ; 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 v1 {int a; int b;}; |
| ; typedef struct v1 __v1; |
| ; typedef __v1 arr[4]; |
| ; struct v3 { char c; int d[100]; }; |
| ; #define _(x) (__builtin_preserve_access_index(x)) |
| ; #define cast_to_arr(x) ((arr *)(x)) |
| ; int get_value(const int *arg); |
| ; int test(struct v3 *arg) { |
| ; return get_value(_(&cast_to_arr(&arg->d[0])[0][2].b)); |
| ; } |
| ; Compilation flag: |
| ; clang -target bpf -O2 -g -S -emit-llvm test.c |
| |
| %struct.v3 = type { i8, [100 x i32] } |
| %struct.v1 = type { i32, i32 } |
| |
| ; Function Attrs: nounwind |
| define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !22 { |
| entry: |
| call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !32, metadata !DIExpression()), !dbg !33 |
| %0 = tail call [100 x i32]* @llvm.preserve.struct.access.index.p0a100i32.p0s_struct.v3s(%struct.v3* %arg, i32 1, i32 1), !dbg !34, !llvm.preserve.access.index !26 |
| %1 = tail call i32* @llvm.preserve.array.access.index.p0i32.p0a100i32([100 x i32]* %0, i32 1, i32 0), !dbg !34, !llvm.preserve.access.index !15 |
| %2 = bitcast i32* %1 to [4 x %struct.v1]*, !dbg !34 |
| %3 = tail call [4 x %struct.v1]* @llvm.preserve.array.access.index.p0a4s_struct.v1s.p0a4s_struct.v1s([4 x %struct.v1]* %2, i32 0, i32 0), !dbg !34, !llvm.preserve.access.index !4 |
| %4 = tail call %struct.v1* @llvm.preserve.array.access.index.p0s_struct.v1s.p0a4s_struct.v1s([4 x %struct.v1]* %3, i32 1, i32 2), !dbg !34, !llvm.preserve.access.index !5 |
| %5 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v1s(%struct.v1* %4, i32 1, i32 1), !dbg !34, !llvm.preserve.access.index !8 |
| %call = tail call i32 @get_value(i32* %5) #4, !dbg !35 |
| ret i32 %call, !dbg !36 |
| } |
| |
| ; CHECK: r2 = 4 |
| ; CHECK: r1 += r2 |
| ; CHECK: r2 = 20 |
| ; CHECK: r1 += r2 |
| ; CHECK: call get_value |
| |
| ; CHECK: .long 1 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]]) |
| ; CHECK: .long 100 # BTF_KIND_STRUCT(id = [[TID2:[0-9]+]]) |
| |
| ; CHECK: .ascii "v3" # string offset=1 |
| ; CHECK: .ascii ".text" # string offset=46 |
| ; CHECK: .ascii "0:1:0" # string offset=52 |
| ; CHECK: .ascii "2:1" # string offset=107 |
| |
| ; CHECK: .long 16 # FieldReloc |
| ; CHECK-NEXT: .long 46 # Field reloc section string offset=46 |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK-NEXT: .long [[TID1]] |
| ; CHECK-NEXT: .long 52 |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long .Ltmp{{[0-9]+}} |
| ; CHECK-NEXT: .long [[TID2]] |
| ; CHECK-NEXT: .long 107 |
| ; CHECK-NEXT: .long 0 |
| |
| declare dso_local i32 @get_value(i32*) local_unnamed_addr #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare [100 x i32]* @llvm.preserve.struct.access.index.p0a100i32.p0s_struct.v3s(%struct.v3*, i32, i32) #2 |
| |
| ; Function Attrs: nounwind readnone |
| declare i32* @llvm.preserve.array.access.index.p0i32.p0a100i32([100 x i32]*, i32, i32) #2 |
| |
| ; Function Attrs: nounwind readnone |
| declare [4 x %struct.v1]* @llvm.preserve.array.access.index.p0a4s_struct.v1s.p0a4s_struct.v1s([4 x %struct.v1]*, i32, i32) #2 |
| |
| ; Function Attrs: nounwind readnone |
| declare %struct.v1* @llvm.preserve.array.access.index.p0s_struct.v1s.p0a4s_struct.v1s([4 x %struct.v1]*, i32, i32) #2 |
| |
| ; Function Attrs: nounwind readnone |
| declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v1s(%struct.v1*, i32, i32) #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 = { "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 #2 = { nounwind readnone } |
| attributes #3 = { nounwind readnone speculatable willreturn } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!18, !19, !20} |
| !llvm.ident = !{!21} |
| |
| !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) |
| !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast") |
| !2 = !{} |
| !3 = !{!4, !15, !5} |
| !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64) |
| !5 = !DIDerivedType(tag: DW_TAG_typedef, name: "arr", file: !1, line: 3, baseType: !6) |
| !6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 256, elements: !13) |
| !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v1", file: !1, line: 2, baseType: !8) |
| !8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v1", file: !1, line: 1, size: 64, elements: !9) |
| !9 = !{!10, !12} |
| !10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !1, line: 1, baseType: !11, size: 32) |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !1, line: 1, baseType: !11, size: 32, offset: 32) |
| !13 = !{!14} |
| !14 = !DISubrange(count: 4) |
| !15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !11, size: 3200, elements: !16) |
| !16 = !{!17} |
| !17 = !DISubrange(count: 100) |
| !18 = !{i32 2, !"Dwarf Version", i32 4} |
| !19 = !{i32 2, !"Debug Info Version", i32 3} |
| !20 = !{i32 1, !"wchar_size", i32 4} |
| !21 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"} |
| !22 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 8, type: !23, scopeLine: 8, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !31) |
| !23 = !DISubroutineType(types: !24) |
| !24 = !{!11, !25} |
| !25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !26, size: 64) |
| !26 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 4, size: 3232, elements: !27) |
| !27 = !{!28, !30} |
| !28 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !26, file: !1, line: 4, baseType: !29, size: 8) |
| !29 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !30 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !26, file: !1, line: 4, baseType: !15, size: 3200, offset: 32) |
| !31 = !{!32} |
| !32 = !DILocalVariable(name: "arg", arg: 1, scope: !22, file: !1, line: 8, type: !25) |
| !33 = !DILocation(line: 0, scope: !22) |
| !34 = !DILocation(line: 9, column: 20, scope: !22) |
| !35 = !DILocation(line: 9, column: 10, scope: !22) |
| !36 = !DILocation(line: 9, column: 3, scope: !22) |
