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
5 ; typedef struct v3 { int a; int b; } __v3;
6 ; #define _(x) (__builtin_preserve_access_index(x))
7 ; int get_value(const int *arg);
8 ; int test(__v3 *arg) {
9 ; return get_value(_(&arg[1].b));
12 ; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
16 %struct.v3 = type { i32, i32 }
18 ; Function Attrs: nounwind
19 define dso_local i32 @test(ptr %arg) local_unnamed_addr #0 !dbg !15 {
21 call void @llvm.dbg.value(metadata ptr %arg, metadata !19, metadata !DIExpression()), !dbg !20
22 %0 = tail call ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr elementtype(%struct.v3) %arg, i32 0, i32 1), !dbg !21, !llvm.preserve.access.index !4
23 %1 = tail call ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr elementtype(%struct.v3) %0, i32 1, i32 1), !dbg !21, !llvm.preserve.access.index !6
24 %call = tail call i32 @get_value(ptr %1) #4, !dbg !22
25 ret i32 %call, !dbg !23
29 ; CHECK-NEXT: r1 += r2
30 ; CHECK: call get_value
32 ; CHECK: .long 6 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
33 ; CHECK: .ascii "v3" # string offset=6
34 ; CHECK: .ascii ".text" # string offset=26
35 ; CHECK: .ascii "1:1" # string offset=32
37 ; CHECK: .long 16 # FieldReloc
38 ; CHECK-NEXT: .long 26 # Field reloc section string offset=26
40 ; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
41 ; CHECK-NEXT: .long [[TID1]]
42 ; CHECK-NEXT: .long 32
45 declare dso_local i32 @get_value(ptr) local_unnamed_addr #1
47 ; Function Attrs: nounwind readnone
48 declare ptr @llvm.preserve.array.access.index.p0.v3s.p0.v3s(ptr, i32, i32) #2
50 ; Function Attrs: nounwind readnone
51 declare ptr @llvm.preserve.struct.access.index.p0.p0.v3s(ptr, i32, i32) #2
53 ; Function Attrs: nounwind readnone speculatable willreturn
54 declare void @llvm.dbg.value(metadata, metadata, metadata) #3
56 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" }
57 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" }
58 attributes #2 = { nounwind readnone }
59 attributes #3 = { nounwind readnone speculatable willreturn }
60 attributes #4 = { nounwind }
63 !llvm.module.flags = !{!11, !12, !13}
66 !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)
67 !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
70 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
71 !5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 1, baseType: !6)
72 !6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 1, size: 64, elements: !7)
74 !8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 1, baseType: !9, size: 32)
75 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
76 !10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 1, baseType: !9, size: 32, offset: 32)
77 !11 = !{i32 2, !"Dwarf Version", i32 4}
78 !12 = !{i32 2, !"Debug Info Version", i32 3}
79 !13 = !{i32 1, !"wchar_size", i32 4}
80 !14 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
81 !15 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 4, type: !16, scopeLine: 4, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !18)
82 !16 = !DISubroutineType(types: !17)
85 !19 = !DILocalVariable(name: "arg", arg: 1, scope: !15, file: !1, line: 4, type: !4)
86 !20 = !DILocation(line: 0, scope: !15)
87 !21 = !DILocation(line: 5, column: 20, scope: !15)
88 !22 = !DILocation(line: 5, column: 10, scope: !15)
89 !23 = !DILocation(line: 5, column: 3, scope: !15)