forked from OSchip/llvm-project
118 lines
6.6 KiB
LLVM
118 lines
6.6 KiB
LLVM
; 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;
|
|
; struct v2 { int c; int d; };
|
|
; typedef struct v2 __v2;
|
|
; struct v3 { char c; volatile const __v2 d; };
|
|
; typedef struct v3 __v3;
|
|
; #define _(x) (__builtin_preserve_access_index(x))
|
|
; #define cast_to_v1(x) ((__v1 *)(x))
|
|
; int get_value(const int *arg);
|
|
; int test(__v3 *arg) {
|
|
; return get_value(_(&cast_to_v1(&arg->d)->b));
|
|
; }
|
|
; Compilation flag:
|
|
; clang -target bpf -O2 -g -S -emit-llvm test.c
|
|
|
|
%struct.v3 = type { i8, %struct.v2 }
|
|
%struct.v2 = type { i32, i32 }
|
|
%struct.v1 = type { i32, i32 }
|
|
|
|
; Function Attrs: nounwind
|
|
define dso_local i32 @test(%struct.v3* %arg) local_unnamed_addr #0 !dbg !15 {
|
|
entry:
|
|
call void @llvm.dbg.value(metadata %struct.v3* %arg, metadata !33, metadata !DIExpression()), !dbg !34
|
|
%0 = tail call %struct.v2* @llvm.preserve.struct.access.index.p0s_struct.v2s.p0s_struct.v3s(%struct.v3* %arg, i32 1, i32 1), !dbg !35, !llvm.preserve.access.index !20
|
|
%1 = bitcast %struct.v2* %0 to %struct.v1*, !dbg !35
|
|
%2 = tail call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.v1s(%struct.v1* %1, i32 1, i32 1), !dbg !35, !llvm.preserve.access.index !6
|
|
%call = tail call i32 @get_value(i32* %2) #4, !dbg !36
|
|
ret i32 %call, !dbg !37
|
|
}
|
|
|
|
; CHECK: r2 = 4
|
|
; CHECK: r1 += r2
|
|
; CHECK: r2 = 4
|
|
; CHECK: r1 += r2
|
|
; CHECK: call get_value
|
|
|
|
; CHECK: .long 6 # BTF_KIND_STRUCT(id = [[TID1:[0-9]+]])
|
|
; CHECK: .long 91 # BTF_KIND_STRUCT(id = [[TID2:[0-9]+]])
|
|
|
|
; CHECK: .ascii "v3" # string offset=6
|
|
; CHECK: .ascii ".text" # string offset=39
|
|
; CHECK: .ascii "0:1" # string offset=45
|
|
; CHECK: .ascii "v1" # string offset=91
|
|
|
|
|
|
; CHECK: .long 12 # OffsetReloc
|
|
; CHECK-NEXT: .long 39 # Offset reloc section string offset=39
|
|
; CHECK-NEXT: .long 2
|
|
; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
|
|
; CHECK-NEXT: .long [[TID1]]
|
|
; CHECK-NEXT: .long 45
|
|
; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
|
|
; CHECK-NEXT: .long [[TID2]]
|
|
; CHECK-NEXT: .long 45
|
|
|
|
declare dso_local i32 @get_value(i32*) local_unnamed_addr #1
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare %struct.v2* @llvm.preserve.struct.access.index.p0s_struct.v2s.p0s_struct.v3s(%struct.v3*, 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 = !{!11, !12, !13}
|
|
!llvm.ident = !{!14}
|
|
|
|
!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}
|
|
!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
|
|
!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v1", file: !1, line: 2, baseType: !6)
|
|
!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v1", file: !1, line: 1, size: 64, elements: !7)
|
|
!7 = !{!8, !10}
|
|
!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !1, line: 1, baseType: !9, size: 32)
|
|
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !1, line: 1, baseType: !9, size: 32, offset: 32)
|
|
!11 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!12 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!13 = !{i32 1, !"wchar_size", i32 4}
|
|
!14 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
|
|
!15 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 10, type: !16, scopeLine: 10, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !32)
|
|
!16 = !DISubroutineType(types: !17)
|
|
!17 = !{!9, !18}
|
|
!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
|
|
!19 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v3", file: !1, line: 6, baseType: !20)
|
|
!20 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v3", file: !1, line: 5, size: 96, elements: !21)
|
|
!21 = !{!22, !24}
|
|
!22 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !20, file: !1, line: 5, baseType: !23, size: 8)
|
|
!23 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
|
|
!24 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !20, file: !1, line: 5, baseType: !25, size: 64, offset: 32)
|
|
!25 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !26)
|
|
!26 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !27)
|
|
!27 = !DIDerivedType(tag: DW_TAG_typedef, name: "__v2", file: !1, line: 4, baseType: !28)
|
|
!28 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "v2", file: !1, line: 3, size: 64, elements: !29)
|
|
!29 = !{!30, !31}
|
|
!30 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !28, file: !1, line: 3, baseType: !9, size: 32)
|
|
!31 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !28, file: !1, line: 3, baseType: !9, size: 32, offset: 32)
|
|
!32 = !{!33}
|
|
!33 = !DILocalVariable(name: "arg", arg: 1, scope: !15, file: !1, line: 10, type: !18)
|
|
!34 = !DILocation(line: 0, scope: !15)
|
|
!35 = !DILocation(line: 11, column: 20, scope: !15)
|
|
!36 = !DILocation(line: 11, column: 10, scope: !15)
|
|
!37 = !DILocation(line: 11, column: 3, scope: !15)
|