; LLVM IR from yinqiwen/ardb :: src/common/channel/channel_pipeline.ll (ZN4ardb15ChannelPipelineC2Ev)

; 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"

%"struct.btree::btree_key_compare_to_adapter" = type { i8 }
%"class.std::allocator.0" = type { 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 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4ardb15ChannelPipelineC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca %"struct.btree::btree_key_compare_to_adapter", align 1
  %4 = alloca %"class.std::allocator.0", align 1
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %7 = load ptr, ptr %2, align 8
  %8 = getelementptr inbounds %"class.ardb::ChannelPipeline", ptr %7, i32 0, i32 0
  store ptr null, ptr %8, align 8, !tbaa !9
  %9 = getelementptr inbounds %"class.ardb::ChannelPipeline", ptr %7, i32 0, i32 1
  store ptr null, ptr %9, align 8, !tbaa !17
  %10 = getelementptr inbounds %"class.ardb::ChannelPipeline", ptr %7, i32 0, i32 2
  store ptr null, ptr %10, align 8, !tbaa !18
  %11 = getelementptr inbounds %"class.ardb::ChannelPipeline", ptr %7, i32 0, i32 3
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #3
  call void @_ZN5btree28btree_key_compare_to_adapterISt4lessINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3)
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  call void @_ZNSaISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  invoke void @_ZN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEC2ERKNS_28btree_key_compare_to_adapterISB_EERKSF_(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %12 unwind label %13

12:                                               ; preds = %1
  call void @_ZNSt15__new_allocatorISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #3
  ret void

13:                                               ; preds = %1
  %14 = landingpad { ptr, i32 }
          cleanup
  %15 = extractvalue { ptr, i32 } %14, 0
  store ptr %15, ptr %5, align 8
  %16 = extractvalue { ptr, i32 } %14, 1
  store i32 %16, ptr %6, align 4
  call void @_ZNSt15__new_allocatorISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #3
  br label %17

17:                                               ; preds = %13
  %18 = load ptr, ptr %5, align 8
  %19 = load i32, ptr %6, align 4
  %20 = insertvalue { ptr, i32 } poison, ptr %18, 0
  %21 = insertvalue { ptr, i32 } %20, i32 %19, 1
  resume { ptr, i32 } %21
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN5btree28btree_key_compare_to_adapterISt4lessINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEC2ERKNS_28btree_key_compare_to_adapterISB_EERKSF_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind 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 #3 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTSN4ardb15ChannelPipelineE", !6, i64 0, !6, i64 8, !6, i64 16, !11, i64 24}
!11 = !{!"_ZTSN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEE", !12, i64 0}
!12 = !{!"_ZTSN5btree19btree_map_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !13, i64 0}
!13 = !{!"_ZTSN5btree22btree_unique_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !14, i64 0}
!14 = !{!"_ZTSN5btree15btree_containerINS_5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS8_ESaISt4pairIKS8_SB_EELi256EEEEEEE", !15, i64 0}
!15 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS7_ESaISt4pairIKS7_SA_EELi256EEEEE", !16, i64 0}
!16 = !{!"_ZTSN5btree5btreeINS_16btree_map_paramsINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS7_ESaISt4pairIKS7_SA_EELi256EEEE17empty_base_handleIS6_PNS_10btree_nodeISH_EEEE", !6, i64 0}
!17 = !{!10, !6, i64 8}
!18 = !{!10, !6, i64 16}


; 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"

%"struct.btree::btree_key_compare_to_adapter" = type { i8 }
%"class.std::allocator.0" = type { i8 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4ardb15ChannelPipelineC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"struct.btree::btree_key_compare_to_adapter", align 1
  %3 = alloca %"class.std::allocator.0", align 1
  %4 = getelementptr inbounds i8, ptr %0, i64 24
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %0, i8 0, i64 24, i1 false)
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %2) #4
  call void @_ZN5btree28btree_key_compare_to_adapterISt4lessINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %2)
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #4
  call void @_ZNSaISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #4
  invoke void @_ZN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEC2ERKNS_28btree_key_compare_to_adapterISB_EERKSF_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 1 dereferenceable(1) %2, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %5 unwind label %6

5:                                                ; preds = %1
  call void @_ZNSt15__new_allocatorISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #4
  ret void

6:                                                ; preds = %1
  %7 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #4
  resume { ptr, i32 } %7
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN5btree28btree_key_compare_to_adapterISt4lessINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5btree9btree_mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextESt4lessIS6_ESaISt4pairIKS6_S9_EELi256EEC2ERKNS_28btree_key_compare_to_adapterISB_EERKSF_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPN4ardb21ChannelHandlerContextEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind 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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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)"}


; Effective O3 passes: EarlyCSEPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,SROAPass,SimplifyCFGPass,TailCallElimPass