; LLVM IR from VAR-solutions/Algorithms :: data structures/linked list/cpp/doubly_circular_linked_list.ll (Z14insertAfterKeyRP4node)

; 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.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%struct.node = type { i32, ptr, ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.9 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [51 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z7getNodev() #0

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

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z17displayLinkedListRP4node(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z14insertAfterKeyRP4node(ptr noundef nonnull align 8 dereferenceable(8) %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.11)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.9)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.node, ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  store ptr %15, ptr %5, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %28, %1
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  %20 = icmp ne ptr %17, %19
  br i1 %20, label %21, label %32

21:                                               ; preds = %16
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.node, ptr %22, i32 0, i32 0
  %24 = load i32, ptr %23, align 8, !tbaa !12
  %25 = load i32, ptr %3, align 4, !tbaa !13
  %26 = icmp eq i32 %24, %25
  br i1 %26, label %27, label %28

27:                                               ; preds = %21
  br label %32

28:                                               ; preds = %21
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.node, ptr %29, i32 0, i32 1
  %31 = load ptr, ptr %30, align 8, !tbaa !9
  store ptr %31, ptr %5, align 8, !tbaa !5
  br label %16, !llvm.loop !14

32:                                               ; preds = %27, %16
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = load ptr, ptr %2, align 8, !tbaa !5
  %35 = load ptr, ptr %34, align 8, !tbaa !5
  %36 = icmp eq ptr %33, %35
  br i1 %36, label %37, label %39

37:                                               ; preds = %32
  %38 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.10)
  store i32 1, ptr %6, align 4
  br label %61

39:                                               ; preds = %32
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %40 = call noundef ptr @_Z7getNodev()
  store ptr %40, ptr %7, align 8, !tbaa !5
  %41 = load i32, ptr %4, align 4, !tbaa !13
  %42 = load ptr, ptr %7, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.node, ptr %42, i32 0, i32 0
  store i32 %41, ptr %43, align 8, !tbaa !12
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.node, ptr %44, i32 0, i32 1
  %46 = load ptr, ptr %45, align 8, !tbaa !9
  %47 = load ptr, ptr %7, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.node, ptr %47, i32 0, i32 1
  store ptr %46, ptr %48, align 8, !tbaa !9
  %49 = load ptr, ptr %5, align 8, !tbaa !5
  %50 = load ptr, ptr %7, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.node, ptr %50, i32 0, i32 2
  store ptr %49, ptr %51, align 8, !tbaa !16
  %52 = load ptr, ptr %7, align 8, !tbaa !5
  %53 = load ptr, ptr %5, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.node, ptr %53, i32 0, i32 1
  %55 = load ptr, ptr %54, align 8, !tbaa !9
  %56 = getelementptr inbounds %struct.node, ptr %55, i32 0, i32 2
  store ptr %52, ptr %56, align 8, !tbaa !16
  %57 = load ptr, ptr %7, align 8, !tbaa !5
  %58 = load ptr, ptr %5, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct.node, ptr %58, i32 0, i32 1
  store ptr %57, ptr %59, align 8, !tbaa !9
  %60 = load ptr, ptr %2, align 8, !tbaa !5
  call void @_Z17displayLinkedListRP4node(ptr noundef nonnull align 8 dereferenceable(8) %60)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  store i32 0, ptr %6, align 4
  br label %61

61:                                               ; preds = %39, %37
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  %62 = load i32, ptr %6, align 4
  switch i32 %62, label %64 [
    i32 0, label %63
    i32 1, label %63
  ]

63:                                               ; preds = %61, %61
  ret void

64:                                               ; preds = %61
  unreachable
}

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 = { inlinehint 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS4node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 0}
!13 = !{!11, !11, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{!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"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.9 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [51 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z7getNodev() local_unnamed_addr #0

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z17displayLinkedListRP4node(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z14insertAfterKeyRP4node(ptr noundef nonnull align 8 dereferenceable(8) %0) local_unnamed_addr #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.11)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  %5 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %6 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.9)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %8 = load ptr, ptr %0, align 8, !tbaa !5
  %9 = load i32, ptr %2, align 4
  br label %10

10:                                               ; preds = %11, %1
  %.pn = phi ptr [ %8, %1 ], [ %.0, %11 ]
  %.0.in = getelementptr inbounds i8, ptr %.pn, i64 8
  %.0 = load ptr, ptr %.0.in, align 8, !tbaa !9
  %.not = icmp eq ptr %.0, %8
  br i1 %.not, label %14, label %11

11:                                               ; preds = %10
  %12 = load i32, ptr %.0, align 8, !tbaa !12
  %13 = icmp eq i32 %12, %9
  br i1 %13, label %16, label %10, !llvm.loop !13

14:                                               ; preds = %10
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.10)
  br label %24

16:                                               ; preds = %11
  %17 = call noundef ptr @_Z7getNodev()
  %18 = load i32, ptr %3, align 4, !tbaa !15
  store i32 %18, ptr %17, align 8, !tbaa !12
  %19 = getelementptr inbounds i8, ptr %.0, i64 8
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %17, i64 8
  store ptr %20, ptr %21, align 8, !tbaa !9
  %22 = getelementptr inbounds i8, ptr %17, i64 16
  store ptr %.0, ptr %22, align 8, !tbaa !16
  %23 = getelementptr inbounds i8, ptr %20, i64 16
  store ptr %17, ptr %23, align 8, !tbaa !16
  store ptr %17, ptr %19, align 8, !tbaa !9
  call void @_Z17displayLinkedListRP4node(ptr noundef nonnull align 8 dereferenceable(8) %0)
  br label %24

24:                                               ; preds = %16, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  ret void
}

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 = { inlinehint 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS4node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!11, !11, i64 0}
!16 = !{!10, !6, i64 16}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass