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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 }
%min_max_val = type { i64, i64 }
%int64_max_t__tuple_t = type { i64, i64 }
@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 !32
@__bt__max_cpu_id = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !46
@__bt__event_loss_counter = dso_local externally_initialized global [1 x [1 x i64]] zeroinitializer, section ".data.event_loss_counter", !dbg !48
@__bt__num_cpus = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !54
; 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 !60 {
entry:
%mm_struct = alloca %min_max_val, align 8
%"@x_key" = alloca i64, align 8
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@x_key")
store i64 1, ptr %"@x_key", align 8
%lookup_elem = call ptr inttoptr (i64 1 to ptr)(ptr @AT_x, ptr %"@x_key")
%lookup_cond = icmp ne ptr %lookup_elem, null
br i1 %lookup_cond, label %lookup_success, label %lookup_failure
lookup_success: ; preds = %entry
%1 = getelementptr %min_max_val, ptr %lookup_elem, i64 0, i32 1
%2 = getelementptr %min_max_val, ptr %lookup_elem, i64 0, i32 0
%3 = load i64, ptr %2, align 8
%4 = load i64, ptr %1, align 8
%is_set_cond = icmp eq i64 %4, 1
br i1 %is_set_cond, label %is_set, label %min_max
lookup_failure: ; preds = %entry
call void @llvm.lifetime.start.p0(i64 -1, ptr %mm_struct)
%5 = getelementptr %min_max_val, ptr %mm_struct, i64 0, i32 0
store i64 2, ptr %5, align 8
%6 = getelementptr %min_max_val, ptr %mm_struct, i64 0, i32 1
store i64 1, ptr %6, align 8
%update_elem = call i64 inttoptr (i64 2 to ptr)(ptr @AT_x, ptr %"@x_key", ptr %mm_struct, i64 0)
call void @llvm.lifetime.end.p0(i64 -1, ptr %mm_struct)
br label %lookup_merge
lookup_merge: ; preds = %lookup_failure, %merge
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@x_key")
%for_each_map_elem = call i64 inttoptr (i64 164 to ptr)(ptr @AT_x, ptr @map_for_each_cb, ptr null, i64 0)
ret i64 0
is_set: ; preds = %lookup_success
%7 = icmp sge i64 2, %3
br i1 %7, label %min_max, label %merge
min_max: ; preds = %is_set, %lookup_success
store i64 2, ptr %2, align 8
store i64 1, ptr %1, align 8
br label %merge
merge: ; preds = %min_max, %is_set
br label %lookup_merge
}
; 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 nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg %0, ptr nocapture %1) #1
; Function Attrs: nounwind
define internal i64 @map_for_each_cb(ptr %0, ptr %1, ptr %2, ptr %3) #0 section ".text" !dbg !66 {
for_body:
%"$res" = alloca i64, align 8
call void @llvm.lifetime.start.p0(i64 -1, ptr %"$res")
store i64 0, ptr %"$res", align 8
%"$kv" = alloca %int64_max_t__tuple_t, align 8
%val_2 = alloca i64, align 8
%val_1 = alloca i64, align 8
%i = alloca i32, align 4
%key = load i64, ptr %1, align 8
call void @llvm.lifetime.start.p0(i64 -1, ptr %i)
call void @llvm.lifetime.start.p0(i64 -1, ptr %val_1)
call void @llvm.lifetime.start.p0(i64 -1, ptr %val_2)
store i32 0, ptr %i, align 4
store i64 0, ptr %val_1, align 8
store i64 0, ptr %val_2, align 8
br label %while_cond
for_continue: ; preds = %while_end
ret i64 0
for_break: ; No predecessors!
ret i64 1
while_cond: ; preds = %min_max_merge, %for_body
%4 = load i32, ptr @__bt__num_cpus, align 4
%5 = load i32, ptr %i, align 4
%num_cpu.cmp = icmp ult i32 %5, %4
br i1 %num_cpu.cmp, label %while_body, label %while_end
while_body: ; preds = %while_cond
%6 = load i32, ptr %i, align 4
%lookup_percpu_elem = call ptr inttoptr (i64 195 to ptr)(ptr @AT_x, ptr %1, i32 %6)
%map_lookup_cond = icmp ne ptr %lookup_percpu_elem, null
br i1 %map_lookup_cond, label %lookup_success, label %lookup_failure
while_end: ; preds = %error_failure, %error_success, %while_cond
call void @llvm.lifetime.end.p0(i64 -1, ptr %i)
%7 = load i64, ptr %val_1, align 8
call void @llvm.lifetime.end.p0(i64 -1, ptr %val_1)
call void @llvm.lifetime.end.p0(i64 -1, ptr %val_2)
call void @llvm.lifetime.start.p0(i64 -1, ptr %"$kv")
call void @llvm.memset.p0.i64(ptr align 1 %"$kv", i8 0, i64 16, i1 false)
%8 = getelementptr %int64_max_t__tuple_t, ptr %"$kv", i32 0, i32 0
store i64 %key, ptr %8, align 8
%9 = getelementptr %int64_max_t__tuple_t, ptr %"$kv", i32 0, i32 1
store i64 %7, ptr %9, align 8
%10 = getelementptr %int64_max_t__tuple_t, ptr %"$kv", i32 0, i32 1
%11 = load i64, ptr %10, align 8
store i64 %11, ptr %"$res", align 8
br label %for_continue
lookup_success: ; preds = %while_body
%12 = getelementptr %min_max_val, ptr %lookup_percpu_elem, i64 0, i32 0
%13 = load i64, ptr %12, align 8
%14 = getelementptr %min_max_val, ptr %lookup_percpu_elem, i64 0, i32 1
%15 = load i64, ptr %14, align 8
%val_set_cond = icmp eq i64 %15, 1
%16 = load i64, ptr %val_2, align 8
%ret_set_cond = icmp eq i64 %16, 1
%17 = load i64, ptr %val_1, align 8
%max_cond = icmp sgt i64 %13, %17
br i1 %val_set_cond, label %val_set_success, label %min_max_merge
lookup_failure: ; preds = %while_body
%18 = load i32, ptr %i, align 4
%error_lookup_cond = icmp eq i32 %18, 0
br i1 %error_lookup_cond, label %error_success, label %error_failure
val_set_success: ; preds = %lookup_success
br i1 %ret_set_cond, label %ret_set_success, label %min_max_success
min_max_success: ; preds = %ret_set_success, %val_set_success
store i64 %13, ptr %val_1, align 8
store i64 1, ptr %val_2, align 8
br label %min_max_merge
ret_set_success: ; preds = %val_set_success
br i1 %max_cond, label %min_max_success, label %min_max_merge
min_max_merge: ; preds = %min_max_success, %ret_set_success, %lookup_success
%19 = load i32, ptr %i, align 4
%20 = add i32 %19, 1
store i32 %20, ptr %i, align 4
br label %while_cond
error_success: ; preds = %lookup_failure
br label %while_end
error_failure: ; preds = %lookup_failure
%21 = load i32, ptr %i, align 4
br label %while_end
}
; 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
attributes #0 = { nounwind }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
!llvm.dbg.cu = !{!56}
!llvm.module.flags = !{!58, !59}
!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, !22, !25}
!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: 160, elements: !15)
!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!15 = !{!16}
!16 = !DISubrange(count: 5, lowerBound: 0)
!17 = !DIDerivedType(tag: DW_TAG_member, name: "max_entries", scope: !2, file: !2, baseType: !18, size: 64, offset: 64)
!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
!19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 131072, elements: !20)
!20 = !{!21}
!21 = !DISubrange(count: 4096, lowerBound: 0)
!22 = !DIDerivedType(tag: DW_TAG_member, name: "key", scope: !2, file: !2, baseType: !23, size: 64, offset: 128)
!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !24, size: 64)
!24 = !DIBasicType(name: "int64", size: 64, encoding: DW_ATE_signed)
!25 = !DIDerivedType(tag: DW_TAG_member, name: "value", scope: !2, file: !2, baseType: !26, size: 64, offset: 192)
!26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !27, size: 64)
!27 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 128, elements: !28)
!28 = !{!29, !30}
!29 = !DIDerivedType(tag: DW_TAG_member, scope: !2, file: !2, baseType: !24, size: 64)
!30 = !DIDerivedType(tag: DW_TAG_member, scope: !2, file: !2, baseType: !31, size: 64, offset: 64)
!31 = !DIBasicType(name: "int32", size: 32, encoding: DW_ATE_signed)
!32 = !DIGlobalVariableExpression(var: !33, expr: !DIExpression())
!33 = distinct !DIGlobalVariable(name: "ringbuf", linkageName: "global", scope: !2, file: !2, type: !34, isLocal: false, isDefinition: true)
!34 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 128, elements: !35)
!35 = !{!36, !41}
!36 = !DIDerivedType(tag: DW_TAG_member, name: "type", scope: !2, file: !2, baseType: !37, size: 64)
!37 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !38, size: 64)
!38 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 864, elements: !39)
!39 = !{!40}
!40 = !DISubrange(count: 27, lowerBound: 0)
!41 = !DIDerivedType(tag: DW_TAG_member, name: "max_entries", scope: !2, file: !2, baseType: !42, size: 64, offset: 64)
!42 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !43, size: 64)
!43 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 8388608, elements: !44)
!44 = !{!45}
!45 = !DISubrange(count: 262144, lowerBound: 0)
!46 = !DIGlobalVariableExpression(var: !47, expr: !DIExpression())
!47 = distinct !DIGlobalVariable(name: "__bt__max_cpu_id", linkageName: "global", scope: !2, file: !2, type: !24, isLocal: false, isDefinition: true)
!48 = !DIGlobalVariableExpression(var: !49, expr: !DIExpression())
!49 = distinct !DIGlobalVariable(name: "__bt__event_loss_counter", linkageName: "global", scope: !2, file: !2, type: !50, isLocal: false, isDefinition: true)
!50 = !DICompositeType(tag: DW_TAG_array_type, baseType: !51, size: 64, elements: !52)
!51 = !DICompositeType(tag: DW_TAG_array_type, baseType: !24, size: 64, elements: !52)
!52 = !{!53}
!53 = !DISubrange(count: 1, lowerBound: 0)
!54 = !DIGlobalVariableExpression(var: !55, expr: !DIExpression())
!55 = distinct !DIGlobalVariable(name: "__bt__num_cpus", linkageName: "global", scope: !2, file: !2, type: !24, isLocal: false, isDefinition: true)
!56 = distinct !DICompileUnit(language: DW_LANG_C, file: !2, producer: "bpftrace", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, globals: !57)
!57 = !{!0, !7, !32, !46, !48, !54}
!58 = !{i32 2, !"Debug Info Version", i32 3}
!59 = !{i32 7, !"uwtable", i32 0}
!60 = distinct !DISubprogram(name: "kprobe_f_1", linkageName: "kprobe_f_1", scope: !2, file: !2, type: !61, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !56, retainedNodes: !64)
!61 = !DISubroutineType(types: !62)
!62 = !{!24, !63}
!63 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64)
!64 = !{!65}
!65 = !DILocalVariable(name: "ctx", arg: 1, scope: !60, file: !2, type: !63)
!66 = distinct !DISubprogram(name: "map_for_each_cb", linkageName: "map_for_each_cb", scope: !2, file: !2, type: !67, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !56, retainedNodes: !69)
!67 = !DISubroutineType(types: !68)
!68 = !{!24, !63, !63, !63, !63}
!69 = !{!70, !71, !72, !73}
!70 = !DILocalVariable(name: "map", arg: 1, scope: !66, file: !2, type: !63)
!71 = !DILocalVariable(name: "key", arg: 2, scope: !66, file: !2, type: !63)
!72 = !DILocalVariable(name: "value", arg: 3, scope: !66, file: !2, type: !63)
!73 = !DILocalVariable(name: "ctx", arg: 4, scope: !66, file: !2, type: !63)
|
