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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, ptr, ptr }
%"struct map_internal_repr_t.1" = type { ptr, ptr, ptr, ptr }
%"struct map_internal_repr_t.2" = type { ptr, ptr }
@LICENSE = global [4 x i8] c"GPL\00", section "license", !dbg !0
@AT_bar = dso_local global %"struct map_internal_repr_t" zeroinitializer, section ".maps", !dbg !7
@AT_foo = dso_local global %"struct map_internal_repr_t.0" zeroinitializer, section ".maps", !dbg !26
@AT_x = dso_local global %"struct map_internal_repr_t.1" zeroinitializer, section ".maps", !dbg !35
@ringbuf = dso_local global %"struct map_internal_repr_t.2" zeroinitializer, section ".maps", !dbg !40
@__bt__event_loss_counter = dso_local externally_initialized global [1 x [1 x i64]] zeroinitializer, section ".data.event_loss_counter", !dbg !54
@__bt__max_cpu_id = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !58
; 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 !64 {
entry:
%"@x_val" = alloca i64, align 8
%"@x_key" = alloca i64, align 8
%lookup_elem_val8 = alloca [16 x i8], align 1
%"@foo_key3" = alloca i64, align 8
%"@bar_key" = alloca i64, align 8
%lookup_elem_val = alloca [16 x i8], align 1
%"@foo_key1" = alloca i64, align 8
%"@foo_val" = alloca [16 x i8], align 1
%"@foo_key" = alloca i64, align 8
%1 = call ptr @llvm.preserve.static.offset(ptr %0)
%2 = getelementptr i8, ptr %1, i64 112
%arg0 = load volatile i64, ptr %2, align 8
%3 = inttoptr i64 %arg0 to ptr
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@foo_key")
store i64 0, ptr %"@foo_key", align 8
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@foo_val")
%probe_read_kernel = call i64 inttoptr (i64 113 to ptr)(ptr %"@foo_val", i32 16, ptr %3)
%update_elem = call i64 inttoptr (i64 2 to ptr)(ptr @AT_foo, ptr %"@foo_key", ptr %"@foo_val", i64 0)
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@foo_val")
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@foo_key")
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@foo_key1")
store i64 0, ptr %"@foo_key1", align 8
%lookup_elem = call ptr inttoptr (i64 1 to ptr)(ptr @AT_foo, ptr %"@foo_key1")
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
call void @llvm.memcpy.p0.p0.i64(ptr align 1 %lookup_elem_val, ptr align 1 %lookup_elem, i64 16, i1 false)
br label %lookup_merge
lookup_failure: ; preds = %entry
call void @llvm.memset.p0.i64(ptr align 1 %lookup_elem_val, i8 0, i64 16, i1 false)
br label %lookup_merge
lookup_merge: ; preds = %lookup_failure, %lookup_success
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@foo_key1")
%4 = getelementptr [16 x i8], ptr %lookup_elem_val, i32 0, i64 4
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@bar_key")
store i64 0, ptr %"@bar_key", align 8
%update_elem2 = call i64 inttoptr (i64 2 to ptr)(ptr @AT_bar, ptr %"@bar_key", ptr %4, i64 0)
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@bar_key")
call void @llvm.lifetime.end.p0(i64 -1, ptr %lookup_elem_val)
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@foo_key3")
store i64 0, ptr %"@foo_key3", align 8
%lookup_elem4 = call ptr inttoptr (i64 1 to ptr)(ptr @AT_foo, ptr %"@foo_key3")
call void @llvm.lifetime.start.p0(i64 -1, ptr %lookup_elem_val8)
%map_lookup_cond9 = icmp ne ptr %lookup_elem4, null
br i1 %map_lookup_cond9, label %lookup_success5, label %lookup_failure6
lookup_success5: ; preds = %lookup_merge
call void @llvm.memcpy.p0.p0.i64(ptr align 1 %lookup_elem_val8, ptr align 1 %lookup_elem4, i64 16, i1 false)
br label %lookup_merge7
lookup_failure6: ; preds = %lookup_merge
call void @llvm.memset.p0.i64(ptr align 1 %lookup_elem_val8, i8 0, i64 16, i1 false)
br label %lookup_merge7
lookup_merge7: ; preds = %lookup_failure6, %lookup_success5
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@foo_key3")
%5 = getelementptr [16 x i8], ptr %lookup_elem_val8, i32 0, i64 4
%6 = getelementptr [8 x i8], ptr %5, i32 0, i64 0
%7 = load volatile i32, ptr %6, align 4
call void @llvm.lifetime.end.p0(i64 -1, ptr %lookup_elem_val8)
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@x_key")
store i64 0, ptr %"@x_key", align 8
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@x_val")
%8 = sext i32 %7 to i64
store i64 %8, ptr %"@x_val", align 8
%update_elem10 = call i64 inttoptr (i64 2 to ptr)(ptr @AT_x, ptr %"@x_key", ptr %"@x_val", i64 0)
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@x_val")
call void @llvm.lifetime.end.p0(i64 -1, ptr %"@x_key")
ret i64 0
}
; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare ptr @llvm.preserve.static.offset(ptr readnone %0) #1
; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg %0, ptr nocapture %1) #2
; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg %0, ptr nocapture %1) #2
; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly %0, ptr noalias nocapture readonly %1, i64 %2, i1 immarg %3) #3
; 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) #4
attributes #0 = { nounwind }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
!llvm.dbg.cu = !{!60}
!llvm.module.flags = !{!62, !63}
!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_bar", 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: 64, elements: !24)
!24 = !{!25}
!25 = !DISubrange(count: 8, lowerBound: 0)
!26 = !DIGlobalVariableExpression(var: !27, expr: !DIExpression())
!27 = distinct !DIGlobalVariable(name: "AT_foo", linkageName: "global", scope: !2, file: !2, type: !28, isLocal: false, isDefinition: true)
!28 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 256, elements: !29)
!29 = !{!11, !17, !18, !30}
!30 = !DIDerivedType(tag: DW_TAG_member, name: "value", scope: !2, file: !2, baseType: !31, size: 64, offset: 192)
!31 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !32, size: 64)
!32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !4, size: 128, elements: !33)
!33 = !{!34}
!34 = !DISubrange(count: 16, lowerBound: 0)
!35 = !DIGlobalVariableExpression(var: !36, expr: !DIExpression())
!36 = distinct !DIGlobalVariable(name: "AT_x", linkageName: "global", scope: !2, file: !2, type: !37, isLocal: false, isDefinition: true)
!37 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 256, elements: !38)
!38 = !{!11, !17, !18, !39}
!39 = !DIDerivedType(tag: DW_TAG_member, name: "value", scope: !2, file: !2, baseType: !19, size: 64, offset: 192)
!40 = !DIGlobalVariableExpression(var: !41, expr: !DIExpression())
!41 = distinct !DIGlobalVariable(name: "ringbuf", linkageName: "global", scope: !2, file: !2, type: !42, isLocal: false, isDefinition: true)
!42 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 128, elements: !43)
!43 = !{!44, !49}
!44 = !DIDerivedType(tag: DW_TAG_member, name: "type", scope: !2, file: !2, baseType: !45, size: 64)
!45 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !46, size: 64)
!46 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 864, elements: !47)
!47 = !{!48}
!48 = !DISubrange(count: 27, lowerBound: 0)
!49 = !DIDerivedType(tag: DW_TAG_member, name: "max_entries", scope: !2, file: !2, baseType: !50, size: 64, offset: 64)
!50 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !51, size: 64)
!51 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 8388608, elements: !52)
!52 = !{!53}
!53 = !DISubrange(count: 262144, lowerBound: 0)
!54 = !DIGlobalVariableExpression(var: !55, expr: !DIExpression())
!55 = distinct !DIGlobalVariable(name: "__bt__event_loss_counter", linkageName: "global", scope: !2, file: !2, type: !56, isLocal: false, isDefinition: true)
!56 = !DICompositeType(tag: DW_TAG_array_type, baseType: !57, size: 64, elements: !15)
!57 = !DICompositeType(tag: DW_TAG_array_type, baseType: !20, size: 64, elements: !15)
!58 = !DIGlobalVariableExpression(var: !59, expr: !DIExpression())
!59 = distinct !DIGlobalVariable(name: "__bt__max_cpu_id", linkageName: "global", scope: !2, file: !2, type: !20, isLocal: false, isDefinition: true)
!60 = distinct !DICompileUnit(language: DW_LANG_C, file: !2, producer: "bpftrace", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, globals: !61)
!61 = !{!0, !7, !26, !35, !40, !54, !58}
!62 = !{i32 2, !"Debug Info Version", i32 3}
!63 = !{i32 7, !"uwtable", i32 0}
!64 = distinct !DISubprogram(name: "kprobe_f_1", linkageName: "kprobe_f_1", scope: !2, file: !2, type: !65, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !60, retainedNodes: !68)
!65 = !DISubroutineType(types: !66)
!66 = !{!20, !67}
!67 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64)
!68 = !{!69}
!69 = !DILocalVariable(name: "ctx", arg: 1, scope: !64, file: !2, type: !67)
|
