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|
; ModuleID = 'bpftrace'
source_filename = "bpftrace"
target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
target triple = "bpf"
%"struct map_internal_repr_t" = type { ptr, ptr, ptr, ptr }
%"struct map_internal_repr_t.0" = type { ptr, ptr }
%runtime_error_t = type <{ i64, i64, i32 }>
@LICENSE = global [4 x i8] c"GPL\00", section "license", !dbg !0
@AT_x = dso_local global %"struct map_internal_repr_t" zeroinitializer, section ".maps", !dbg !7
@ringbuf = dso_local global %"struct map_internal_repr_t.0" zeroinitializer, section ".maps", !dbg !26
@__bt__event_loss_counter = dso_local externally_initialized global [1 x [1 x i64]] zeroinitializer, section ".data.event_loss_counter", !dbg !40
@__bt__max_cpu_id = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !44
; Function Attrs: nounwind
declare i64 @llvm.bpf.pseudo(i64 %0, i64 %1) #0
; Function Attrs: nounwind
define i64 @kprobe_f_1(ptr %0) #0 section "s_kprobe_f_1" !dbg !50 {
entry:
%runtime_error_t3 = alloca %runtime_error_t, align 8
%"@x_key" = alloca i64, align 8
%runtime_error_t = alloca %runtime_error_t, align 8
%__builtin_comm = alloca [16 x i8], align 1
call void @llvm.lifetime.start.p0(i64 -1, ptr %__builtin_comm)
call void @llvm.memset.p0.i64(ptr align 1 %__builtin_comm, i8 0, i64 16, i1 false)
%get_comm = call i64 inttoptr (i64 16 to ptr)(ptr %__builtin_comm, i64 16)
%1 = trunc i64 %get_comm to i32
%2 = icmp sge i32 %1, 0
br i1 %2, label %helper_merge, label %helper_failure
helper_failure: ; preds = %entry
call void @llvm.lifetime.start.p0(i64 -1, ptr %runtime_error_t)
%3 = getelementptr %runtime_error_t, ptr %runtime_error_t, i64 0, i32 0
store i64 30006, ptr %3, align 8
%4 = getelementptr %runtime_error_t, ptr %runtime_error_t, i64 0, i32 1
store i64 0, ptr %4, align 8
%5 = getelementptr %runtime_error_t, ptr %runtime_error_t, i64 0, i32 2
store i32 %1, ptr %5, align 4
%ringbuf_output = call i64 inttoptr (i64 130 to ptr)(ptr @ringbuf, ptr %runtime_error_t, i64 20, i64 0)
%ringbuf_loss = icmp slt i64 %ringbuf_output, 0
br i1 %ringbuf_loss, label %event_loss_counter, label %counter_merge
helper_merge: ; preds = %counter_merge, %entry
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@x_key")
store i64 0, ptr %"@x_key", align 8
%update_elem = call i64 inttoptr (i64 2 to ptr)(ptr @AT_x, ptr %"@x_key", ptr %__builtin_comm, i64 0)
%6 = trunc i64 %update_elem to i32
%7 = icmp sge i32 %6, 0
br i1 %7, label %helper_merge2, label %helper_failure1
event_loss_counter: ; preds = %helper_failure
%get_cpu_id = call i64 inttoptr (i64 8 to ptr)() #3
%8 = load i64, ptr @__bt__max_cpu_id, align 8
%cpu.id.bounded = and i64 %get_cpu_id, %8
%9 = getelementptr [1 x [1 x i64]], ptr @__bt__event_loss_counter, i64 0, i64 %cpu.id.bounded, i64 0
%10 = load i64, ptr %9, align 8
%11 = add i64 %10, 1
store i64 %11, ptr %9, align 8
br label %counter_merge
counter_merge: ; preds = %event_loss_counter, %helper_failure
call void @llvm.lifetime.end.p0(i64 -1, ptr %runtime_error_t)
br label %helper_merge
helper_failure1: ; preds = %helper_merge
call void @llvm.lifetime.start.p0(i64 -1, ptr %runtime_error_t3)
%12 = getelementptr %runtime_error_t, ptr %runtime_error_t3, i64 0, i32 0
store i64 30006, ptr %12, align 8
%13 = getelementptr %runtime_error_t, ptr %runtime_error_t3, i64 0, i32 1
store i64 1, ptr %13, align 8
%14 = getelementptr %runtime_error_t, ptr %runtime_error_t3, i64 0, i32 2
store i32 %6, ptr %14, align 4
%ringbuf_output4 = call i64 inttoptr (i64 130 to ptr)(ptr @ringbuf, ptr %runtime_error_t3, i64 20, i64 0)
%ringbuf_loss7 = icmp slt i64 %ringbuf_output4, 0
br i1 %ringbuf_loss7, label %event_loss_counter5, label %counter_merge6
helper_merge2: ; preds = %counter_merge6, %helper_merge
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@x_key")
call void @llvm.lifetime.end.p0(i64 -1, ptr %__builtin_comm)
ret i64 0
event_loss_counter5: ; preds = %helper_failure1
%get_cpu_id8 = call i64 inttoptr (i64 8 to ptr)() #3
%15 = load i64, ptr @__bt__max_cpu_id, align 8
%cpu.id.bounded9 = and i64 %get_cpu_id8, %15
%16 = getelementptr [1 x [1 x i64]], ptr @__bt__event_loss_counter, i64 0, i64 %cpu.id.bounded9, i64 0
%17 = load i64, ptr %16, align 8
%18 = add i64 %17, 1
store i64 %18, ptr %16, align 8
br label %counter_merge6
counter_merge6: ; preds = %event_loss_counter5, %helper_failure1
call void @llvm.lifetime.end.p0(i64 -1, ptr %runtime_error_t3)
br label %helper_merge2
}
; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg %0, ptr nocapture %1) #1
; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly %0, i8 %1, i64 %2, i1 immarg %3) #2
; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg %0, ptr nocapture %1) #1
attributes #0 = { nounwind }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { memory(none) }
!llvm.dbg.cu = !{!46}
!llvm.module.flags = !{!48, !49}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "LICENSE", linkageName: "global", scope: !2, file: !2, type: !3, isLocal: false, isDefinition: true)
!2 = !DIFile(filename: "bpftrace.bpf.o", directory: ".")
!3 = !DICompositeType(tag: DW_TAG_array_type, baseType: !4, size: 32, elements: !5)
!4 = !DIBasicType(name: "int8", size: 8, encoding: DW_ATE_signed)
!5 = !{!6}
!6 = !DISubrange(count: 4, lowerBound: 0)
!7 = !DIGlobalVariableExpression(var: !8, expr: !DIExpression())
!8 = distinct !DIGlobalVariable(name: "AT_x", linkageName: "global", scope: !2, file: !2, type: !9, isLocal: false, isDefinition: true)
!9 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 256, elements: !10)
!10 = !{!11, !17, !18, !21}
!11 = !DIDerivedType(tag: DW_TAG_member, name: "type", scope: !2, file: !2, baseType: !12, size: 64)
!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
!13 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 32, elements: !15)
!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!15 = !{!16}
!16 = !DISubrange(count: 1, lowerBound: 0)
!17 = !DIDerivedType(tag: DW_TAG_member, name: "max_entries", scope: !2, file: !2, baseType: !12, size: 64, offset: 64)
!18 = !DIDerivedType(tag: DW_TAG_member, name: "key", scope: !2, file: !2, baseType: !19, size: 64, offset: 128)
!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64)
!20 = !DIBasicType(name: "int64", size: 64, encoding: DW_ATE_signed)
!21 = !DIDerivedType(tag: DW_TAG_member, name: "value", scope: !2, file: !2, baseType: !22, size: 64, offset: 192)
!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)
!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !4, size: 128, elements: !24)
!24 = !{!25}
!25 = !DISubrange(count: 16, lowerBound: 0)
!26 = !DIGlobalVariableExpression(var: !27, expr: !DIExpression())
!27 = distinct !DIGlobalVariable(name: "ringbuf", linkageName: "global", scope: !2, file: !2, type: !28, isLocal: false, isDefinition: true)
!28 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 128, elements: !29)
!29 = !{!30, !35}
!30 = !DIDerivedType(tag: DW_TAG_member, name: "type", scope: !2, file: !2, baseType: !31, size: 64)
!31 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !32, size: 64)
!32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 864, elements: !33)
!33 = !{!34}
!34 = !DISubrange(count: 27, lowerBound: 0)
!35 = !DIDerivedType(tag: DW_TAG_member, name: "max_entries", scope: !2, file: !2, baseType: !36, size: 64, offset: 64)
!36 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !37, size: 64)
!37 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 8388608, elements: !38)
!38 = !{!39}
!39 = !DISubrange(count: 262144, lowerBound: 0)
!40 = !DIGlobalVariableExpression(var: !41, expr: !DIExpression())
!41 = distinct !DIGlobalVariable(name: "__bt__event_loss_counter", linkageName: "global", scope: !2, file: !2, type: !42, isLocal: false, isDefinition: true)
!42 = !DICompositeType(tag: DW_TAG_array_type, baseType: !43, size: 64, elements: !15)
!43 = !DICompositeType(tag: DW_TAG_array_type, baseType: !20, size: 64, elements: !15)
!44 = !DIGlobalVariableExpression(var: !45, expr: !DIExpression())
!45 = distinct !DIGlobalVariable(name: "__bt__max_cpu_id", linkageName: "global", scope: !2, file: !2, type: !20, isLocal: false, isDefinition: true)
!46 = distinct !DICompileUnit(language: DW_LANG_C, file: !2, producer: "bpftrace", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, globals: !47)
!47 = !{!0, !7, !26, !40, !44}
!48 = !{i32 2, !"Debug Info Version", i32 3}
!49 = !{i32 7, !"uwtable", i32 0}
!50 = distinct !DISubprogram(name: "kprobe_f_1", linkageName: "kprobe_f_1", scope: !2, file: !2, type: !51, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !46, retainedNodes: !54)
!51 = !DISubroutineType(types: !52)
!52 = !{!20, !53}
!53 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64)
!54 = !{!55}
!55 = !DILocalVariable(name: "ctx", arg: 1, scope: !50, file: !2, type: !53)
|
