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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 !29
@__bt__event_loss_counter = dso_local externally_initialized global [1 x [1 x i64]] zeroinitializer, section ".data.event_loss_counter", !dbg !43
@__bt__max_cpu_id = dso_local externally_initialized constant i64 0, section ".rodata", !dbg !47
; 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 !53 {
entry:
%"$var" = alloca i32, align 4
call void @llvm.lifetime.start.p0(i64 -1, ptr %"$var")
store i32 0, ptr %"$var", align 4
%runtime_error_t = alloca %runtime_error_t, align 8
%lookup_elem_val = alloca [4 x i32], align 4
%"@x_key1" = alloca i64, align 8
%"@x_val" = alloca [4 x i32], align 4
%"@x_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
%4 = call ptr @llvm.preserve.static.offset(ptr %3)
%5 = getelementptr i8, ptr %4, i64 0
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")
%probe_read_kernel = call i64 inttoptr (i64 113 to ptr)(ptr %"@x_val", i32 16, ptr %5)
%update_elem = 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")
call void @llvm.lifetime.start.p0(i64 -1, ptr %"@x_key1")
store i64 0, ptr %"@x_key1", align 8
%lookup_elem = call ptr inttoptr (i64 1 to ptr)(ptr @AT_x, ptr %"@x_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 %"@x_key1")
br i1 false, label %is_oob, label %oob_merge
is_oob: ; preds = %lookup_merge
call void @llvm.lifetime.start.p0(i64 -1, ptr %runtime_error_t)
%6 = getelementptr %runtime_error_t, ptr %runtime_error_t, i64 0, i32 0
store i64 30006, ptr %6, align 8
%7 = getelementptr %runtime_error_t, ptr %runtime_error_t, i64 0, i32 1
store i64 0, ptr %7, align 8
%8 = getelementptr %runtime_error_t, ptr %runtime_error_t, i64 0, i32 2
store i64 0, ptr %8, align 8
%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
oob_merge: ; preds = %counter_merge, %lookup_merge
%9 = getelementptr [4 x i32], ptr %lookup_elem_val, i32 0, i64 0
%10 = load volatile i32, ptr %9, align 4
call void @llvm.lifetime.end.p0(i64 -1, ptr %lookup_elem_val)
store i32 %10, ptr %"$var", align 4
ret i64 0
event_loss_counter: ; preds = %is_oob
%get_cpu_id = call i64 inttoptr (i64 8 to ptr)() #5
%11 = load i64, ptr @__bt__max_cpu_id, align 8
%cpu.id.bounded = and i64 %get_cpu_id, %11
%12 = getelementptr [1 x [1 x i64]], ptr @__bt__event_loss_counter, i64 0, i64 %cpu.id.bounded, i64 0
%13 = load i64, ptr %12, align 8
%14 = add i64 %13, 1
store i64 %14, ptr %12, align 8
br label %counter_merge
counter_merge: ; preds = %event_loss_counter, %is_oob
call void @llvm.lifetime.end.p0(i64 -1, ptr %runtime_error_t)
br label %oob_merge
}
; 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) }
attributes #5 = { memory(none) }
!llvm.dbg.cu = !{!49}
!llvm.module.flags = !{!51, !52}
!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: 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: !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_array_type, baseType: !28, size: 128, elements: !5)
!28 = !DIBasicType(name: "int32", size: 32, encoding: DW_ATE_signed)
!29 = !DIGlobalVariableExpression(var: !30, expr: !DIExpression())
!30 = distinct !DIGlobalVariable(name: "ringbuf", linkageName: "global", scope: !2, file: !2, type: !31, isLocal: false, isDefinition: true)
!31 = !DICompositeType(tag: DW_TAG_structure_type, scope: !2, file: !2, size: 128, elements: !32)
!32 = !{!33, !38}
!33 = !DIDerivedType(tag: DW_TAG_member, name: "type", scope: !2, file: !2, baseType: !34, size: 64)
!34 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !35, size: 64)
!35 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 864, elements: !36)
!36 = !{!37}
!37 = !DISubrange(count: 27, lowerBound: 0)
!38 = !DIDerivedType(tag: DW_TAG_member, name: "max_entries", scope: !2, file: !2, baseType: !39, size: 64, offset: 64)
!39 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !40, size: 64)
!40 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 8388608, elements: !41)
!41 = !{!42}
!42 = !DISubrange(count: 262144, lowerBound: 0)
!43 = !DIGlobalVariableExpression(var: !44, expr: !DIExpression())
!44 = distinct !DIGlobalVariable(name: "__bt__event_loss_counter", linkageName: "global", scope: !2, file: !2, type: !45, isLocal: false, isDefinition: true)
!45 = !DICompositeType(tag: DW_TAG_array_type, baseType: !46, size: 64, elements: !15)
!46 = !DICompositeType(tag: DW_TAG_array_type, baseType: !24, size: 64, elements: !15)
!47 = !DIGlobalVariableExpression(var: !48, expr: !DIExpression())
!48 = distinct !DIGlobalVariable(name: "__bt__max_cpu_id", linkageName: "global", scope: !2, file: !2, type: !24, isLocal: false, isDefinition: true)
!49 = distinct !DICompileUnit(language: DW_LANG_C, file: !2, producer: "bpftrace", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, globals: !50)
!50 = !{!0, !7, !29, !43, !47}
!51 = !{i32 2, !"Debug Info Version", i32 3}
!52 = !{i32 7, !"uwtable", i32 0}
!53 = distinct !DISubprogram(name: "kprobe_f_1", linkageName: "kprobe_f_1", scope: !2, file: !2, type: !54, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !49, retainedNodes: !57)
!54 = !DISubroutineType(types: !55)
!55 = !{!24, !56}
!56 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64)
!57 = !{!58}
!58 = !DILocalVariable(name: "ctx", arg: 1, scope: !53, file: !2, type: !56)
|
