; LLVM IR from yinqiwen/ardb :: src/common/channel/signal (signal_channel)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.ardb::SignalChannel" = type <{ %"class.ardb::Channel", %"class.btree::btree_map.0", i32, i32, i32, [4 x i8] }>
%"class.ardb::Channel" = type { %"class.ardb::Runnable", %"struct.ardb::ChannelOptions", i8, i8, i32, %"class.ardb::ChannelPipeline", ptr, i32, i32, %"class.ardb::Buffer", %"class.ardb::Buffer", i32, ptr, ptr, ptr, ptr, i8, i8, i8, ptr, ptr, ptr }
%"class.ardb::Runnable" = type { ptr }
%"struct.ardb::ChannelOptions" = type <{ i32, i32, i8, [3 x i8], i32, i8, [3 x i8], i32, i32, i32, i8, i8, [2 x i8] }>
%"class.ardb::ChannelPipeline" = type { ptr, ptr, ptr, %"class.btree::btree_map" }
%"class.btree::btree_map" = type { %"class.btree::btree_map_container" }
%"class.btree::btree_map_container" = type { %"class.btree::btree_unique_container" }
%"class.btree::btree_unique_container" = type { %"class.btree::btree_container" }
%"class.btree::btree_container" = type { %"class.btree::btree" }
%"class.btree::btree" = type { %"struct.btree::btree<btree::btree_map_params<std::__cxx11::basic_string<char>, ardb::ChannelHandlerContext *, std::less<std::__cxx11::basic_string<char>>, std::allocator<std::pair<const std::__cxx11::basic_string<char>, ardb::ChannelHandlerContext *>>, 256>>::empty_base_handle" }
%"struct.btree::btree<btree::btree_map_params<std::__cxx11::basic_string<char>, ardb::ChannelHandlerContext *, std::less<std::__cxx11::basic_string<char>>, std::allocator<std::pair<const std::__cxx11::basic_string<char>, ardb::ChannelHandlerContext *>>, 256>>::empty_base_handle" = type { ptr }
%"class.ardb::Buffer" = type <{ ptr, i64, i64, i64, i8, [7 x i8] }>
%"class.btree::btree_map.0" = type { %"class.btree::btree_map_container.1" }
%"class.btree::btree_map_container.1" = type { %"class.btree::btree_unique_container.2" }
%"class.btree::btree_unique_container.2" = type { %"class.btree::btree_container.3" }
%"class.btree::btree_container.3" = type { %"class.btree::btree.4" }
%"class.btree::btree.4" = type { %"struct.btree::btree<btree::btree_map_params<unsigned int, std::vector<ardb::SignalHandler *>, std::less<unsigned int>, std::allocator<std::pair<const unsigned int, std::vector<ardb::SignalHandler *>>>, 256>>::empty_base_handle" }
%"struct.btree::btree<btree::btree_map_params<unsigned int, std::vector<ardb::SignalHandler *>, std::less<unsigned int>, std::allocator<std::pair<const unsigned int, std::vector<ardb::SignalHandler *>>>, 256>>::empty_base_handle" = type { ptr }

@_ZN4ardb13SignalChannel20m_singleton_instanceE = external dso_local global ptr, align 8
@_ZL16kWriteSigInfoBuf = external hidden global [132 x i8], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4ardb13SignalChannel8SignalCBEiP9siginfo_tPv(i32 noundef %0, ptr noundef %1, ptr noundef %2) #0 align 2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  %11 = load ptr, ptr @_ZN4ardb13SignalChannel20m_singleton_instanceE, align 8, !tbaa !9
  %12 = icmp ne ptr null, %11
  br i1 %12, label %13, label %52

13:                                               ; preds = %3
  %14 = load ptr, ptr @_ZN4ardb13SignalChannel20m_singleton_instanceE, align 8, !tbaa !9
  %15 = getelementptr inbounds %"class.ardb::SignalChannel", ptr %14, i32 0, i32 3
  %16 = load i32, ptr %15, align 4, !tbaa !11
  %17 = icmp sgt i32 %16, 0
  br i1 %17, label %18, label %52

18:                                               ; preds = %13
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 @_ZL16kWriteSigInfoBuf, ptr align 4 %4, i64 4, i1 false)
  %19 = load ptr, ptr %5, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 getelementptr inbounds (i8, ptr @_ZL16kWriteSigInfoBuf, i64 4), ptr align 8 %19, i64 128, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 132, ptr %8, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %47, %18
  %21 = load i32, ptr %7, align 4, !tbaa !5
  %22 = load i32, ptr %8, align 4, !tbaa !5
  %23 = icmp ult i32 %21, %22
  br i1 %23, label %24, label %48

24:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %25 = load ptr, ptr @_ZN4ardb13SignalChannel20m_singleton_instanceE, align 8, !tbaa !9
  %26 = getelementptr inbounds %"class.ardb::SignalChannel", ptr %25, i32 0, i32 3
  %27 = load i32, ptr %26, align 4, !tbaa !11
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds i8, ptr @_ZL16kWriteSigInfoBuf, i64 %29
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = load i32, ptr %7, align 4, !tbaa !5
  %33 = sub i32 %31, %32
  %34 = zext i32 %33 to i64
  %35 = call i64 @write(i32 noundef %27, ptr noundef %30, i64 noundef %34)
  %36 = trunc i64 %35 to i32
  store i32 %36, ptr %9, align 4, !tbaa !5
  %37 = load i32, ptr %9, align 4, !tbaa !5
  %38 = icmp sge i32 %37, 0
  br i1 %38, label %39, label %43

39:                                               ; preds = %24
  %40 = load i32, ptr %9, align 4, !tbaa !5
  %41 = load i32, ptr %7, align 4, !tbaa !5
  %42 = add i32 %41, %40
  store i32 %42, ptr %7, align 4, !tbaa !5
  br label %44

43:                                               ; preds = %24
  store i32 1, ptr %10, align 4
  br label %45

44:                                               ; preds = %39
  store i32 0, ptr %10, align 4
  br label %45

45:                                               ; preds = %44, %43
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  %46 = load i32, ptr %10, align 4
  switch i32 %46, label %49 [
    i32 0, label %47
  ]

47:                                               ; preds = %45
  br label %20, !llvm.loop !32

48:                                               ; preds = %20
  store i32 0, ptr %10, align 4
  br label %49

49:                                               ; preds = %48, %45
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  %50 = load i32, ptr %10, align 4
  switch i32 %50, label %53 [
    i32 0, label %51
    i32 1, label %52
  ]

51:                                               ; preds = %49
  br label %52

52:                                               ; preds = %51, %49, %13, %3
  ret void

53:                                               ; preds = %49
  unreachable
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i64 @write(i32 noundef, ptr noundef, i64 noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 268}
!12 = !{!"_ZTSN4ardb13SignalChannelE", !13, i64 0, !26, i64 256, !6, i64 264, !6, i64 268, !6, i64 272}
!13 = !{!"_ZTSN4ardb7ChannelE", !14, i64 0, !15, i64 8, !16, i64 44, !16, i64 45, !6, i64 48, !17, i64 56, !10, i64 88, !6, i64 96, !6, i64 100, !24, i64 104, !24, i64 144, !6, i64 184, !10, i64 192, !10, i64 200, !10, i64 208, !10, i64 216, !16, i64 224, !16, i64 225, !16, i64 226, !10, i64 232, !10, i64 240, !10, i64 248}
!14 = !{!"_ZTSN4ardb8RunnableE"}
!15 = !{!"_ZTSN4ardb14ChannelOptionsE", !6, i64 0, !6, i64 4, !16, i64 8, !6, i64 12, !16, i64 16, !6, i64 20, !6, i64 24, !6, i64 28, !16, i64 32, !16, i64 33}
!16 = !{!"bool", !7, i64 0}
!17 = !{!"_ZTSN4ardb15ChannelPipelineE", !10, i64 0, !10, i64 8, !10, i64 16, !18, i64 24}
!18 = !{!"_ZTSN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEE", !19, i64 0}
!19 = !{!"_ZTSN5btree19btree_map_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !20, i64 0}
!20 = !{!"_ZTSN5btree22btree_unique_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !21, i64 0}
!21 = !{!"_ZTSN5btree15btree_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !22, i64 0}
!22 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS7_ESaISt4pairIKS7_SA_EELi256EEEEE", !23, i64 0}
!23 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS7_ESaISt4pairIKS7_SA_EELi256EEEE17empty_base_handleIS6_PNS_10btree_nodeISH_EEEE", !10, i64 0}
!24 = !{!"_ZTSN4ardb6BufferE", !10, i64 0, !25, i64 8, !25, i64 16, !25, i64 24, !16, i64 32}
!25 = !{!"long", !7, i64 0}
!26 = !{!"_ZTSN5btree9btree_mapIjSt6vectorIPN4ardb13SignalHandlerESaIS4_EESt4lessIjESaISt4pairIKjS6_EELi256EEE", !27, i64 0}
!27 = !{!"_ZTSN5btree19btree_map_containerINS_5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS6_EESt4lessIjESaISt4pairIKjS8_EELi256EEEEEEE", !28, i64 0}
!28 = !{!"_ZTSN5btree22btree_unique_containerINS_5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS6_EESt4lessIjESaISt4pairIKjS8_EELi256EEEEEEE", !29, i64 0}
!29 = !{!"_ZTSN5btree15btree_containerINS_5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS6_EESt4lessIjESaISt4pairIKjS8_EELi256EEEEEEE", !30, i64 0}
!30 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS5_EESt4lessIjESaISt4pairIKjS7_EELi256EEEEE", !31, i64 0}
!31 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS5_EESt4lessIjESaISt4pairIKjS7_EELi256EEEE17empty_base_handleISaIcEPNS_10btree_nodeISE_EEEE", !10, i64 0}
!32 = distinct !{!32, !33}
!33 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@_ZN4ardb13SignalChannel20m_singleton_instanceE = external dso_local local_unnamed_addr global ptr, align 8
@_ZL16kWriteSigInfoBuf = external hidden global [132 x i8], align 16

; Function Attrs: mustprogress nofree uwtable
define dso_local void @_ZN4ardb13SignalChannel8SignalCBEiP9siginfo_tPv(i32 noundef %0, ptr nocapture noundef readonly %1, ptr nocapture noundef readnone %2) local_unnamed_addr #0 align 2 {
  %4 = load ptr, ptr @_ZN4ardb13SignalChannel20m_singleton_instanceE, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %.loopexit, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %4, i64 268
  %7 = load i32, ptr %6, align 4, !tbaa !9
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %9, label %.loopexit

9:                                                ; preds = %5
  store i32 %0, ptr @_ZL16kWriteSigInfoBuf, align 16
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 4 dereferenceable(128) getelementptr inbounds (i8, ptr @_ZL16kWriteSigInfoBuf, i64 4), ptr noundef nonnull align 8 dereferenceable(128) %1, i64 128, i1 false)
  br label %10

10:                                               ; preds = %12, %9
  %.09 = phi i32 [ 0, %9 ], [ %23, %12 ]
  %11 = icmp ult i32 %.09, 132
  br i1 %11, label %12, label %.loopexit

12:                                               ; preds = %10
  %13 = load ptr, ptr @_ZN4ardb13SignalChannel20m_singleton_instanceE, align 8, !tbaa !5
  %14 = getelementptr inbounds i8, ptr %13, i64 268
  %15 = load i32, ptr %14, align 4, !tbaa !9
  %16 = zext nneg i32 %.09 to i64
  %17 = getelementptr inbounds i8, ptr @_ZL16kWriteSigInfoBuf, i64 %16
  %18 = sub nuw nsw i32 132, %.09
  %19 = zext nneg i32 %18 to i64
  %20 = tail call i64 @write(i32 noundef %15, ptr noundef nonnull %17, i64 noundef %19)
  %21 = trunc i64 %20 to i32
  %22 = icmp sgt i32 %21, -1
  %23 = add nuw i32 %.09, %21
  br i1 %22, label %10, label %.loopexit, !llvm.loop !31

.loopexit:                                        ; preds = %12, %10, %5, %3
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nofree
declare noundef i64 @write(i32 noundef, ptr nocapture noundef readonly, i64 noundef) local_unnamed_addr #2

attributes #0 = { mustprogress nofree uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !14, i64 268}
!10 = !{!"_ZTSN4ardb13SignalChannelE", !11, i64 0, !25, i64 256, !14, i64 264, !14, i64 268, !14, i64 272}
!11 = !{!"_ZTSN4ardb7ChannelE", !12, i64 0, !13, i64 8, !15, i64 44, !15, i64 45, !14, i64 48, !16, i64 56, !6, i64 88, !14, i64 96, !14, i64 100, !23, i64 104, !23, i64 144, !14, i64 184, !6, i64 192, !6, i64 200, !6, i64 208, !6, i64 216, !15, i64 224, !15, i64 225, !15, i64 226, !6, i64 232, !6, i64 240, !6, i64 248}
!12 = !{!"_ZTSN4ardb8RunnableE"}
!13 = !{!"_ZTSN4ardb14ChannelOptionsE", !14, i64 0, !14, i64 4, !15, i64 8, !14, i64 12, !15, i64 16, !14, i64 20, !14, i64 24, !14, i64 28, !15, i64 32, !15, i64 33}
!14 = !{!"int", !7, i64 0}
!15 = !{!"bool", !7, i64 0}
!16 = !{!"_ZTSN4ardb15ChannelPipelineE", !6, i64 0, !6, i64 8, !6, i64 16, !17, i64 24}
!17 = !{!"_ZTSN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEE", !18, i64 0}
!18 = !{!"_ZTSN5btree19btree_map_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !19, i64 0}
!19 = !{!"_ZTSN5btree22btree_unique_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !20, i64 0}
!20 = !{!"_ZTSN5btree15btree_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !21, i64 0}
!21 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS7_ESaISt4pairIKS7_SA_EELi256EEEEE", !22, i64 0}
!22 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS7_ESaISt4pairIKS7_SA_EELi256EEEE17empty_base_handleIS6_PNS_10btree_nodeISH_EEEE", !6, i64 0}
!23 = !{!"_ZTSN4ardb6BufferE", !6, i64 0, !24, i64 8, !24, i64 16, !24, i64 24, !15, i64 32}
!24 = !{!"long", !7, i64 0}
!25 = !{!"_ZTSN5btree9btree_mapIjSt6vectorIPN4ardb13SignalHandlerESaIS4_EESt4lessIjESaISt4pairIKjS6_EELi256EEE", !26, i64 0}
!26 = !{!"_ZTSN5btree19btree_map_containerINS_5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS6_EESt4lessIjESaISt4pairIKjS8_EELi256EEEEEEE", !27, i64 0}
!27 = !{!"_ZTSN5btree22btree_unique_containerINS_5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS6_EESt4lessIjESaISt4pairIKjS8_EELi256EEEEEEE", !28, i64 0}
!28 = !{!"_ZTSN5btree15btree_containerINS_5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS6_EESt4lessIjESaISt4pairIKjS8_EELi256EEEEEEE", !29, i64 0}
!29 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS5_EESt4lessIjESaISt4pairIKjS7_EELi256EEEEE", !30, i64 0}
!30 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsIjSt6vectorIPN4ardb13SignalHandlerESaIS5_EESt4lessIjESaISt4pairIKjS7_EELi256EEEE17empty_base_handleISaIcEPNS_10btree_nodeISE_EEEE", !6, i64 0}
!31 = distinct !{!31, !32}
!32 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass