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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 }
%int64_sum_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 !26
@__bt__max_cpu_id = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !40
@__bt__event_loss_counter = dso_local externally_initialized global [1 x [1 x i64]] zeroinitializer, section ".data.event_loss_counter", !dbg !42
@__bt__num_cpus = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !48
; 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 !54 {
entry:
%initial_value = alloca i64, align 8
%lookup_elem_val = alloca i64, 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")
call void @llvm.lifetime.start.p0(i64 -1, ptr %lookup_elem_val)
%map_lookup_cond = icmp ne ptr %lookup_elem, null
br i1 %map_lookup_cond, label %lookup_success, label %lookup_failure
lookup_success: ; preds = %entry
%1 = load i64, ptr %lookup_elem, align 8
%2 = add i64 %1, 2
store i64 %2, ptr %lookup_elem, align 8
br label %lookup_merge
lookup_failure: ; preds = %entry
call void @llvm.lifetime.start.p0(i64 -1, ptr %initial_value)
store i64 2, ptr %initial_value, align 8
%update_elem = call i64 inttoptr (i64 2 to ptr)(ptr @AT_x, ptr %"@x_key", ptr %initial_value, i64 0)
call void @llvm.lifetime.end.p0(i64 -1, ptr %initial_value)
br label %lookup_merge
lookup_merge: ; preds = %lookup_failure, %lookup_success
call void @llvm.lifetime.end.p0(i64 -1, ptr %lookup_elem_val)
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
}
; 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 !60 {
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_sum_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 = %lookup_success, %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_sum_t__tuple_t, ptr %"$kv", i32 0, i32 0
store i64 %key, ptr %8, align 8
%9 = getelementptr %int64_sum_t__tuple_t, ptr %"$kv", i32 0, i32 1
store i64 %7, ptr %9, align 8
%10 = getelementptr %int64_sum_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 = load i64, ptr %val_1, align 8
%13 = load i64, ptr %lookup_percpu_elem, align 8
%14 = add i64 %13, %12
store i64 %14, ptr %val_1, align 8
%15 = load i32, ptr %i, align 4
%16 = add i32 %15, 1
store i32 %16, ptr %i, align 4
br label %while_cond
lookup_failure: ; preds = %while_body
%17 = load i32, ptr %i, align 4
%error_lookup_cond = icmp eq i32 %17, 0
br i1 %error_lookup_cond, label %error_success, label %error_failure
error_success: ; preds = %lookup_failure
br label %while_end
error_failure: ; preds = %lookup_failure
%18 = 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 = !{!50}
!llvm.module.flags = !{!52, !53}
!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: !23, size: 64, offset: 192)
!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__max_cpu_id", linkageName: "global", scope: !2, file: !2, type: !24, isLocal: false, isDefinition: true)
!42 = !DIGlobalVariableExpression(var: !43, expr: !DIExpression())
!43 = distinct !DIGlobalVariable(name: "__bt__event_loss_counter", linkageName: "global", scope: !2, file: !2, type: !44, isLocal: false, isDefinition: true)
!44 = !DICompositeType(tag: DW_TAG_array_type, baseType: !45, size: 64, elements: !46)
!45 = !DICompositeType(tag: DW_TAG_array_type, baseType: !24, size: 64, elements: !46)
!46 = !{!47}
!47 = !DISubrange(count: 1, lowerBound: 0)
!48 = !DIGlobalVariableExpression(var: !49, expr: !DIExpression())
!49 = distinct !DIGlobalVariable(name: "__bt__num_cpus", linkageName: "global", scope: !2, file: !2, type: !24, isLocal: false, isDefinition: true)
!50 = distinct !DICompileUnit(language: DW_LANG_C, file: !2, producer: "bpftrace", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, globals: !51)
!51 = !{!0, !7, !26, !40, !42, !48}
!52 = !{i32 2, !"Debug Info Version", i32 3}
!53 = !{i32 7, !"uwtable", i32 0}
!54 = distinct !DISubprogram(name: "kprobe_f_1", linkageName: "kprobe_f_1", scope: !2, file: !2, type: !55, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !50, retainedNodes: !58)
!55 = !DISubroutineType(types: !56)
!56 = !{!24, !57}
!57 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64)
!58 = !{!59}
!59 = !DILocalVariable(name: "ctx", arg: 1, scope: !54, file: !2, type: !57)
!60 = distinct !DISubprogram(name: "map_for_each_cb", linkageName: "map_for_each_cb", scope: !2, file: !2, type: !61, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !50, retainedNodes: !63)
!61 = !DISubroutineType(types: !62)
!62 = !{!24, !57, !57, !57, !57}
!63 = !{!64, !65, !66, !67}
!64 = !DILocalVariable(name: "map", arg: 1, scope: !60, file: !2, type: !57)
!65 = !DILocalVariable(name: "key", arg: 2, scope: !60, file: !2, type: !57)
!66 = !DILocalVariable(name: "value", arg: 3, scope: !60, file: !2, type: !57)
!67 = !DILocalVariable(name: "ctx", arg: 4, scope: !60, file: !2, type: !57)
|
